--- /dev/null
+diff -Naur procps-2.0.6/.cvsignore procps-2.0.7/.cvsignore
+--- procps-2.0.6/.cvsignore Wed Dec 31 19:00:00 1969
++++ procps-2.0.7/.cvsignore Fri Jul 14 16:45:01 2000
+@@ -0,0 +1,14 @@
++skill
++kill
++oldps
++uptime
++tload
++free
++w
++top
++vmstat
++watch
++snice
++pgrep
++pkill
++sysctl
--- /dev/null
+BUG REPORTS
+
+Please read this file before sending in a bug report or patch.
+
+Also, PLEASE read the documentation first. 90% of the mail I get
+complaining about procps is due to the sender not having read the
+documentation!
+
+
+Where to send
+=============
+Send comments, bug reports, patches, etc., to acahalan@cs.uml.edu
+
+
+What to send
+============
+It is much more useful to me if a program really crases to recompile it
+with make "CC=gcc -ggdb -O", run it with "gdb prog" and "run" and send
+me a stack trace ('bt' command). That said, any bug report is still
+better than none.
+
+It might be nice to get rid of miscellaneous compiler warnings, but
+don't bend over backwards to do it.
+
+
+Kernel-Dependent Patches
+========================
+If you send me patches which are specific to *running* with a particular
+kernel version of /proc, please condition them with the runtime determined
+variable `linux_version_code' from libproc/kvers.c. It is the same
+number as the macro LINUX_VERSION_CODE for which the kernel /proc fs
+code was compiled.
+
+A macro is provide in libproc/version.h to construct the code from its
+components, e.g.
+ if (linux_version_code < LINUX_VERSION(1,1,30))
+ /* tty field is only a minor */
+A startup call to set_linux_version may also be necessary.
+
+Of course, if a bug is due to a change in kernel file formats, it would
+be best to first try to generalize the parsing, since the code is then
+more resilient against future change.
+
+If you send me patches which are specific to *compiling* on a particular
+version of Linux include a "#if LINUX_VERSION_CODE > 1*0x10000+3*0x100+54"
+markup of the patch so that the package may be compiled with older
+kernels as well as the "latest and greatest". LINUX_VERSION_CODE is
+#define'd in <linux/version.h>.
+
+Note that you should not make patches specific to *compiling* on a
+particular version of Linux unless there is nothing else you can do.
+
+Also unified diffs (diff -u) are my preference, context diffs (diff -c )
+are kind of usable, and standard diffs (diff) are more useless than a
+generic text description of what you did. Just use
+ diff -u oldfile newfile
+or
+ diff -Naur old-procps-dir new-procps-dir
+to create your diffs and you will make me happy. Also make sure to
+include a description of what the diff is for or I'm likely to ignore
+it because of general lack of time...
+
+
+Code Structure
+==============
+My ultimate goal for this package is to be compilable with any kernel
+headers and to be able to run under any kernel's /proc. (Don't bother
+telling me that I'm not especially close to my ultimate goal... who
+is? :-)
+
+Anyhow, another goal is to encapsulate *all* parsing dependent on /proc
+file formats into the libproc library. If the API is general enough
+it can hopefully stabilize and then /proc changes might only require
+updating libproc.so. Beyond that having the set of utilities be simple
+command lines parsers and output formatters and encapsulating all kernel
+divergence in libproc is the way to go.
+
+Hence if you are submitting a new program or are fixing an old one, keep
+in mind that adding files to libproc which encapsulate such things is
+more desirable than patching the actual driver program. (well, except
+to move it toward the API of the library).
--- /dev/null
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 675 Mass Ave, Cambridge, MA 02139, USA
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+ of this license document, but changing it is not allowed.
+
+ Preamble
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+ The licenses for most software are designed to take away your
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+
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+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
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+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General
+Public License instead of this License.
--- /dev/null
+ GNU LIBRARY GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1991 Free Software Foundation, Inc.
+ 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the library, if
+necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the
+ library `Frob' (a library for tweaking knobs) written by James Random Hacker.
+
+ <signature of Ty Coon>, 1 April 1990
+ Ty Coon, President of Vice
+
+That's all there is to it!
--- /dev/null
+INSTALL for procps version 2.0.1
+================================
+Please read the NEWS and BUGS files, also.
+==========================================
+
+
+Re-compiling the package
+========================
+
+You want to examine the first 30 or so lines of the Makefile (up to the
+configurability note). The destinations of various things attempt FSSTND
+compliance, and are pretty standard. The CC/LD flags and which libraries you
+use for curses/termcap are here also. It is all annotated there and in a
+readily understood format: directories, program to installdir mapping,
+sub-packages to build, and compilation options. A few extra points worth
+mentioning are:
+
+ o The SUBDIRS variable is essentially just a list of subdirectories to
+ perform a recursive make or make install in. Right now that's just
+ ps; the old xproc has been removed because it was entirely redundant.
+ o There is also an option to build and link against a libproc.so which
+ reduces 'ps' and 'top' sizes by a large fraction. It is on by default,
+ so change the value of SHARED if you want.
+ o 'make libinstall' will install the library and header files into standard
+ system directories for developers of /proc utilities. There are no
+ library man pages yet, but the headers are fairly well documented.
+ o You may need to change the INCDIRS definition if your system is
+ not very standard. The current definition has been tested to work
+ on several different systems, though.
+
+Once you are satisfied with the top-level Makefile options (and possibly those
+in subdirectories) you compile and install the package like so:
+(ignore innocuous `rcsid' defined-but-not-used warnings.)
+
+ make distclean # clean-out everything to re-make from scratch
+ make # takes about 0.75 minutes on a PPro 200 with SCSI
+ su # for write/chown-perms on sys dirs
+ make install
+ ldconfig -v # update ld.so to use new libproc if SHARED=1
+ exit
+ make distclean # remove anything that can be rebuilt
+
+
+Miscellaneous Notes
+===================
+
+COMPATIBILITY
+
+ This code is intended for use with Linux 2.0.xx and 2.2.xx.
+ Both libc 5 and libc 6 should work.
+
+PS/TOP WCHAN FIELD
+
+ In past releases, in order to get WCHAN output for ps, you had to
+ have a psdatabase for each zImage kernel that you generated from
+ the vmlinux unstripped binary with /sbin/psupdate. With this release,
+ you should use the System.map automatically generated by Linus' makefile.
+ 'ps' and 'top' will first use the contents of an environment variable
+ "PS_SYSTEM_MAP" and then look for System.map files along
+ the followin search path:
+ /boot/System.map-V, /boot/System.map, /lib/modules/V/System.map,
+ Here 'V' is the output of "uname -r" and looks like "2.2.0".
+ Don't forget the dash! In those same locations, remove psdatabase* files.
+
+
+PARTIAL INSTALLATION
+
+ If you just want to install one program use the targets
+ install_progname and install_progname.X (where X is the man section)
+ instead. E.g.
+ make install_ps install_ps.1
+ Likewise for component packages, e.g.
+ make install_psmisc
--- /dev/null
+# Makefile for procps. Chuck Blake.
+# Portions of this are highly dependent upon features specific to GNU make
+
+export PREFIX = #proc# prefix for program names
+
+export DESTDIR = /
+export MANDIR = /usr/man
+export MAN1DIR = $(DESTDIR)$(MANDIR)/man1
+export MAN5DIR = $(DESTDIR)$(MANDIR)/man5
+export MAN8DIR = $(DESTDIR)$(MANDIR)/man8
+export BINDIR = $(DESTDIR)/bin
+export SBINDIR = $(DESTDIR)/sbin
+export XBINDIR = $(DESTDIR)/usr/X11R6/bin
+export USRBINDIR = $(DESTDIR)/usr/bin
+export PROCDIR = $(DESTDIR)/usr/bin# /usr/proc/bin for Solaris devotees
+export APPLNK = $(DESTDIR)/etc/X11/applnk/Utilities
+export OWNERGROUP = --owner 0 --group 0
+export INSTALLBIN = install --mode a=rx --strip
+export INSTALLSCT = install --mode a=rx
+export INSTALLMAN = install --mode a=r
+
+BPROG = kill # -> BINDIR
+UPROG = oldps uptime tload free w top vmstat watch skill snice # -> USRBINDIR
+PPROG = pgrep pkill# -> PROCDIR
+SPROG = sysctl
+MAN1 = oldps.1 uptime.1 tload.1 free.1 w.1 top.1 watch.1 skill.1 kill.1 snice.1 pgrep.1 pkill.1
+MAN5 = sysctl.conf.5
+MAN8 = vmstat.8 sysctl.8
+DESKTOP = top.desktop
+XSCPT = XConsole # -> XBINDIR
+
+SUBDIRS = ps # sub-packages to build/install
+
+# easy to command-line override
+export INCDIRS = -I/usr/include/ncurses -I/usr/X11R6/include
+
+export CC = gcc #-ggdb # this gets compiling and linking :-)
+export OPT = -O2
+export CFLAGS = -D_GNU_SOURCE $(OPT) -I$(shell pwd) $(INCDIRS) -W -Wall -Wstrict-prototypes -Wshadow -Wcast-align -Wmissing-prototypes
+
+export SHARED = 1# build/install both a static and ELF shared library
+export SHLIBDIR = $(DESTDIR)/lib# where to install the shared library
+
+export LDFLAGS = -Wl,-warn-common #-s recommended for ELF systems
+#LDFLAGS = -qmagic -s# recommended for a.out systems
+#LDFLAGS = -Xlinker -qmagic -s# older a.out systems may need this
+#LDFLAGS = -N -s# still older a.out systems use this
+
+#BFD_CAPABLE = -DBFD_CAPABLE
+#AOUT_CAPABLE = #-DAOUT_CAPABLE
+#ELF_CAPABLE = #-DELF_CAPABLE
+
+#LIBBFD = -lbfd -liberty
+LIBCURSES = -lncurses# watch is the only thing that needs this
+#LIBCURSES = -lcurses -ltermcap# BSD Curses requires termcap
+LIBTERMCAP = -lncurses# provides perfectly good termcap support
+#LIBTERMCAP = -ltermcap
+EXTRALIBS = # -lshadow
+
+W_SHOWFROM = -DW_SHOWFROM# show remote host users are logged in from.
+
+#----------------------------------------------------#
+# End of user-configurable portion of the Makefile. #
+# You should not need to modify anything below this. #
+#----------------------------------------------------#
+BUILD = $(BPROG) $(UPROG) $(PPROG) $(SPROG) $(SUBDIRS) $(DESKTOP)
+
+# BUILD LIBRARIES + PROGRAMS
+all: $(BUILD)
+
+# INSTALL PROGRAMS + DOCS
+install: $(patsubst %,install_%,$(BUILD) $(XSCPT) $(MAN1) $(MAN5) $(MAN8))
+ifeq ($(SHARED),1)
+ install $(OWNERGROUP) --mode a=rx $(LIB_TGT) $(SHLIBDIR)
+endif
+
+# INSTALL LIBRARIES + HEADERS (OPTIONAL)
+libinstall:
+ $(MAKE) -C proc install $(LIBPROCPASS)
+
+clean:
+ $(RM) -f $(OBJ) $(BPROG) $(UPROG) $(PPROG) $(SPROG)
+ for i in proc $(SUBDIRS); do $(MAKE) -C $$i clean; done
+
+distclean: clean
+ for i in proc $(SUBDIRS); do $(MAKE) -C $$i clean; done
+ $(RM) -f $(OBJ) $(BPROG) $(UPROG) $(SPROG) \
+ proc/.depend
+
+
+#-----------------------------------------------------#
+# End of user-callable make targets. #
+# You should not need to read anything below this. #
+#-----------------------------------------------------#
+
+.PHONY: all install libinstall clean distclean
+.PHONY: $(patsubst %,install_%, $(BPROG) $(UPROG) $(SPROG))
+.PHONY: proc ps
+.PHONY: $(patsubst %,build_%, proc ps)
+.PHONY: $(patsubst %,install_%, proc ps)
+
+VERSION = $(shell awk '/^%define major_version/ { print $$3 }' < procps.spec)
+SUBVERSION = $(shell awk '/^%define minor_version/ { print $$3 }' < procps.spec)
+MINORVERSION = $(shell awk '/^%define revision/ { print $$3 }' < procps.spec)
+
+# Note: LIBVERSION may be less than $(VERSION).$(SUBVERSION).$(MINORVERSION)
+# LIBVERSION is only set to current $(VERSION).$(SUBVERSION).$(MINORVERSION)
+# when an incompatible change is made in libproc.
+LIBVERSION = 2.0.7
+ifdef MINORVERSION
+LIBPROCPASS = SHARED=$(SHARED) SHLIBDIR=$(SHLIBDIR) VERSION=$(VERSION) SUBVERSION=$(SUBVERSION) MINORVERSION=$(MINORVERSION) LIBVERSION=$(LIBVERSION)
+else
+LIBPROCPASS = SHARED=$(SHARED) SHLIBDIR=$(SHLIBDIR) VERSION=$(VERSION) SUBVERSION=$(SUBVERSION) LIBVERSION=$(LIBVERSION)
+endif
+
+# libproc setup
+
+ifeq ($(SHARED),1)
+ LIB_TGT = proc/libproc.so.$(LIBVERSION)
+else
+ LIB_TGT = proc/libproc.a
+endif
+
+$(LIB_TGT): $(wildcard proc/*.[ch])
+ $(MAKE) -C proc `basename $(LIB_TGT)` $(LIBPROCPASS)
+
+# component package setup -- the pattern should be obvious: A build rule and
+# unified executable+documentation install rule. (An extra makefile rule is
+# needed for those packages which use Imake.)
+
+ps: build_ps
+build_ps: ; $(MAKE) -C ps
+install_ps: ps ; $(MAKE) -C ps install
+
+# executable dependencies
+oldps kill skill snice top w uptime tload free vmstat utmp : $(LIB_TGT)
+
+# static pattern build/link rules:
+
+%.o : %.c
+ $(strip $(CC) $(CFLAGS) -c $^)
+
+oldps w uptime tload free vmstat utmp pgrep: % : %.o
+ $(strip $(CC) $(LDFLAGS) -o $@ $< $(LIB_TGT) $(EXTRALIBS))
+
+
+# special instances of link rules (need extra libraries/objects)
+
+top: % : %.o
+ $(strip $(CC) $(LDFLAGS) -o $@ $^ $(LIB_TGT) $(LIBTERMCAP) $(EXTRALIBS))
+
+watch: % : %.o
+ $(strip $(CC) $(SLDFLAGS) -o $@ $< $(LIBCURSES) $(EXTRALIBS))
+
+
+# special instances of compile rules (need extra defines)
+w.o: w.c
+ $(strip $(CC) $(CFLAGS) $(W_SHOWFROM) -c $<)
+
+top.o: top.c
+ $(strip $(CC) $(CFLAGS) -fwritable-strings -c $<)
+
+skill.o: skill.c
+ $(strip $(CC) $(CFLAGS) -DSYSV -c $<)
+
+snice: skill
+ ln -f skill snice
+
+kill: skill
+ ln -f skill kill
+
+pkill: pgrep
+ ln -f pgrep pkill
+
+# static pattern installation rules
+
+$(patsubst %,install_%,$(BPROG)): install_%: %
+ $(INSTALLBIN) $< $(BINDIR)/$(PREFIX)$<
+$(patsubst %,install_%,$(SPROG)): install_%: %
+ $(INSTALLBIN) $< $(SBINDIR)/$(PREFIX)$<
+$(patsubst %,install_%,$(UPROG)): install_%: %
+ $(INSTALLBIN) $< $(USRBINDIR)/$(PREFIX)$<
+$(patsubst %,install_%,$(PPROG)): install_%: %
+ $(INSTALLBIN) $< $(PROCDIR)/$(PREFIX)$<
+$(patsubst %,install_%,$(XSCPT)): install_%: %
+ $(INSTALLSCT) $< $(XBINDIR)/$(PREFIX)$<
+$(patsubst %,install_%,$(MAN1)) : install_%: %
+ $(INSTALLMAN) $< $(MAN1DIR)/$(PREFIX)$<
+$(patsubst %,install_%,$(MAN5)) : install_%: %
+ $(INSTALLMAN) $< $(MAN5DIR)/$(PREFIX)$<
+$(patsubst %,install_%,$(MAN8)) : install_%: %
+ $(INSTALLMAN) $< $(MAN8DIR)/$(PREFIX)$<
+$(patsubst %,install_%,$(DESKTOP)) : install_%: %
+ $(INSTALLSCT $< $(APPLNK)/$(PREFIX)$<
+
+# special case install rules
+install_snice: snice install_skill
+ cd $(USRBINDIR) && ln -f skill snice
+install_kill: snice install_skill
+ cd $(USRBINDIR) && ln -f skill kill
+install_pkill: pgrep install_pgrep
+ cd $(USRBINDIR) && ln -f pgrep pkill
+
+# Find all the source and object files in this directory
+
+SRC = $(sort $(wildcard *.c))
+OBJ = $(SRC:.c=.o)
+
+CVSTAG = ps_$(VERSION)_$(SUBVERSION)_$(MINORVERSION)
+FILEVERSION = $(VERSION).$(SUBVERSION).$(MINORVERSION)
+dist: archive
+archive:
+ @cvs -Q tag -F $(CVSTAG)
+ @rm -rf /tmp/procps
+ @cd /tmp; cvs -Q -d $(CVSROOT) export -r$(CVSTAG) procps || echo GRRRrrrrr -- ignore [export aborted]
+ @mv /tmp/procps /tmp/procps-$(FILEVERSION)
+ @cd /tmp; tar czSpf procps-$(FILEVERSION).tar.gz procps-$(FILEVERSION)
+ @cd /tmp; cp procps-$(FILEVERSION)/procps.lsm procps-$(FILEVERSION).lsm
+ @rm -rf /tmp/procps-$(FILEVERSION)
+ @echo "The final archive is /tmp/procps-$(FILEVERSION).tar.gz"
--- /dev/null
+NEWS: what has changed recently with procps, in reverse cronological order.
+Please send bug reports to acahalan@cs.uml.edu
+
+*** THIS FILE DOES NOT INCLUDE RECENT CHANGES ***
+
+
+NEWS for version 2.0.7 of procps
+
+SMP support has been added to top. This adds one line to the screen
+for every processor. There is also an (off by default) field to show
+the last processor that a process used that replaced the long-dead
+LIB field. Please send feedback, positive and negative, on these
+changes to procps-bugs@redhat.com
+
+The libproc soname has changed to 2.0.7 because of a structure
+change required to add SMP support.
+
+Two programs inspired by Solaris's /usr/proc/bin collection have
+been added: pgrep and pkill. By default, for FSSTND/FHS/LSB compliance,
+these are installed in /usr/bin; if you want, you can change PROCDIR
+in Makefile to move them. You can also make a symlink from
+/usr/proc/bin to /usr/bin if you like.
+
+The Makefiles have been sanitized a bit more; they are now less messy
+than they were. There is less duplication between the Makefiles now.
+
+The man pages that use tables have been fixed to work work broken
+versions of man.
+
+The old wmconfig file (specific to Red Hat) has been replaced with a
+desktop file (common across GNOME and KDE).
+
+sysctl returns an error code in a condition in which it didn't before,
+and handles EOF correctly.
+
+top now only loads System.map when it is actually going to make use
+of it.
+
+vmstat has its buffer size increased and handles page size dynamically.
+
+w has its year display fixed to show the year 2000 as 00 instead of 0,
+and to try harder to find a process to display.
+
+watch has a fix for ncurses in recent versions of glibc, and expands
+tabs so that they display correctly.
+
+libproc tries to get the default page size from the system header
+files, but still has a fallback. It also has been extended to allow
+applications to handle their own error reporting in some important
+cases. The pwcache has been expanded in size to correctly handle
+user names longer than 8 characters. It has been expanded to
+provide the lproc field that shows up as top's LC field. A segfault
+when /proc is not mounted was fixed. Missing files will cause
+applications to exit with an error code instead of good exit code.
+A warning when libproc cannot calculate the HZ value (probably due
+to a kernel bug) has been supressed by default because it broke
+people's scripts unnecessarily. A 64-bit memory size reading
+bug was fixed (/proc/meminfo was read incorrectly).
+
+A couple of error messages in ps had newlines added to them. ps
+only opens System.map when it is going to make use of it. The
+full-page error message has been replaced with a shorter usage
+message; the full-page command summary is available with --help,
+and the usage message tells about --help; the full-page summary
+is now no longer an error message and so it is sent to stdout
+insteada of stderr. Processes with run times longer than a day
+now have their runtime displayed correctly. ruser output was fixed.
+An attempt was made to support one more piece of BSD syntax in the
+command line arguments, where pids can follow options with no
+intervening space. The ps man page was made a bit more
+internally consistent and typos fixed. Fixed a segfault when the
+PS_FORMAT environment variable was set wrong.
+
+
+NEWS for version 2.0.6 of procps
+
+Support for large-memory systems has been added.
+
+LIBVERSION has been incremented because of an incompatible change
+in the libproc interface, necessitated by the large-memory support.
+
+A little more error checking in device idle time calculations.
+
+Fixed an almost-impossible file descriptor leak in libproc that
+occasionally showed up in long-running top sessions.
+
+The fix for top no longer depending on NR_TASKS in 2.0.5 was
+broken; top would die with more than 204 tasks. This has been
+fixed.
+
+
+NEWS for version 2.0.5 of procps
+
+procps can build against the 2.3.18 kernel source; top no longer
+depends on NR_TASKS.
+
+sysctl no longer segfaults with -A; has a few parsing fixes
+
+
+NEWS for version 2.0.4 of procps
+
+sysctl can save/restore settings using /etc/sysctl.conf file
+
+top has -p option and N and A commands.
+
+vmstat doesn't mind interrupt counter overflow on long-running machines
+
+ps can now sort by PCPU.
+
+
+NEWS for version 2.0.3 of procps
+
+Time calculations fixed (or at least improved...) for SMP machines.
+In particular, hertz is calculated correctly.
+
+ps doesn't mind terminal resizing happening while it runs.
+
+sysctl is a nifty new program! Try it! Carefully! :-)
+
+w PCPU and WHAT output fixed.
+
+top batch mode now works without a tty (for instance, via rsh).
+
+new version of watch has a few new features like --differences.
+
+sessreg removed; it belongs where it has been for a long time, in X.
+
+
+NEWS for version 2.0.2 of procps
+
+Removed xproc entirely; the only thing left there was XConsole, which
+was equivalent to xconsole -file /proc/kmsg. Added an XConsole shell
+script which does
+exec xconsole -file /proc/kmsg "$@"
+so that folks who depend on XConsole won't be left behind. This also
+fixes the bug that XConsole effectively removed limitations on which
+users were allowed to read /proc/kmsg without root having much choice
+in the matter other than to remove XConsole...
+
+Removed unused psupdate code (still available as part of procps-1.2.x
+for anyone who wants to play with it).
+
+Removed sessreg, as it is included in XFree86 and there is no reason
+for the duplication.
+
+Fixed version number generation so that it happens in one place. I'm
+tired of releasing versions that misreport their version number...
+
+
+NEWS for version 2.0.1 of procps
+
+Reverted my changes that had broken Albert's Unix98 compliance.
+
+Major bugs fixed:
+ o ps now returns failure for "ps <non-existant-pid>"
+ o ps h has reverted to old linux behaviour except in BSD personality;
+ --headers and --no-headers long options have been added
+ o watch buffer overrun fixed (no, not a security hole).
+
+top has -b and -n options added.
+
+
+NEWS for version 2.0 of procps
+
+Thanks to Albert Cahalan for his rewrite of ps, and for making
+the time for new development of ps that I just didn't have. His
+research into how ps worked on lots of different UNIX systems
+really made this version much more usable for a lot of people.
+
+Read ALL of Albert's comments regarding his 1.9.0 release. If
+you do not, you may be surprised when scripts fail. I've tried
+to prepare people for the worst of this by giving out the much-detested
+ warning: `-' deprecated; use `ps aux', not `ps -aux'
+message for roughly a year and a half.
+
+
+NEWS for version 1.9.0 of procps
+
+The ps command now supports simultaneous BSD and Unix98 syntax.
+There have been many other changes in ps. (complete rewrite)
+
+Red Hat users should check /etc/sysconfig/network-scripts/ifdown-ppp
+for the bogus command "ps aul" and change it to "ps axl".
+
+Scripts that make assumptions about character position are and
+were broken because fields may overflow. Scripts should parse by
+whitespace and use -o to get the best results. Command names for
+swapped out processes are now shown in square brackets instead of
+parentheses, as required by the Unix98 standard. This problem can
+be avoided entirely by using a SysV format without -f, using the
+BSD "c" option, or using the format specifier "comm" with -o.
+
+Some uses of ps in /etc/rc.d/init.d/functions should probably
+eventually be changed to stuff somewhat like the following, which
+would eliminate the need for awk:
+
+PS_PERSONALITY=linux dead=`ps -p $pid -o pid=`
+PS_PERSONALITY=linux echo -n `ps -C $1 -o pid=`
+PS_PERSONALITY=linux pid=`ps -C $1 -o pid=`
+
+(or use the 'start-stop-daemon' program that Debian has)
+
+Obsolete files you may have: /etc/psdatabase, /etc/psdevtab,
+~/.psdevtab, /usr/man/man8/psupdate.8 and /usr/sbin/psupdate.
+
+
+NEWS for version 1.2.9 of procps
+
+psupdate has been REMOVED from the default install. You can put it back
+if you want to by removing two comment characters in the Makefile, but
+I'm not going to tell you which ones. <RANT>If you can't figure it out,
+there's a good chance that it won't build on your machine and I don't
+want the bug reports. One of the main reasons I have removed it is that
+it is not necessary on a properly-maintained system (that is, System.map
+exists and is correct) and 4/5ths of the bug reports I have fielded in
+the past are from users who are not able to maintain a working system
+complaining that it doesn't work, despite the fact that the INSTALL file
+explains how to build it in different ways and how to disable it.</RANT>
+I will delete without response all email asking me how to build psupdate.
+
+ps now accepts and ignores the g option for those with fingers tied to
+the g key from too much exposure to BSD. :-)
+
+Should build properly on ultrasparc -- two people sent the patch and
+the second time I didn't notice that the patch went in reverted. So
+I have now reverted the reverted patch to get the right behavior.
+
+More reliable command-line parsing in vmstat has been added. If vmstat
+didn't die for you before, you won't notice the difference...
+
+Fixed a bug where arbitrary users might have been able to corrupt the
+screen of arbitrary other users running top by creating processes with
+weird arguments.
+
+"ps ce" was missing a space character; fixed.
+
+
+NEWS for version 1.2.8 of procps
+
+procps.spec now uses buildroot, and can be built by non-root users.
+This means that the default install targets had to change in the
+makefiles so that the default install does not require root privs
+otherwise. Also changed all "bin" ownership to "root" ownership,
+as kmem-ps has died out and folks won't be automatically doing
+"chmod u+s /bin/ps" and making their systems insecure thereby.
+
+XConsole no longer installed setuid root by default. This is safer,
+if less convenient. Change it if you want to use it as non-root.
+
+top had disgustingly buggy ^Z handling: you could only suspend once,
+and if you had suspended, you could no longer read WCHAN information.
+Both bugs are now fixed.
+
+xcpustate removed -- it was a very old, obsolete version.
+Get a new version from ftp://ftp.cs.toronto.edu/pub/jdd/xcpustate
+
+Now looks for kernel symbols in loadable modules.
+
+psupdate no longer included in RPM package; the theory is that
+systems maintained with RPM probably are reasonably recent and
+up-to-date and so psupdate is extraneous on those systems, only
+adding an unhelpful dependency on a particular version of
+binutils.
+
+top printed two spaces instead of just one between command-line arguments.
+
+
+NEWS for version 1.2.7 of procps
+
+Security hole in XConsole fixed.
+
+Works better with very long uptimes.
+
+Fixed RPM spec file to have correct libproc soname.
+
+skill -i works.
+
+Knows about more major numbers for smart serial boards.
+
+Fixed some small problems in top.
+
+
+NEWS for version 1.2.6 of procps
+
+Signal handling in top fixed in several ways. Main effect: suspending
+works correctly with glibc now.
+
+Patch from Linus for change in some kernel structures to 64-bit.
+This means that libproc has changed soname, as the proc_t data
+structure has changed incompatibly.
+
+File descriptor leaks in libproc were fixed.
+
+
+NEWS for version 1.2.5 of procps
+
+Potential security hole fixed: if there was no /etc/psdevtab on
+a system, a user could put a link from /tmp/psdevtab to a file
+owned by another user, and when that other user ran ps, the
+file it pointed to would be killed. This wouldn't work for
+root because root would be able to create /etc/psdevtab first,
+so arbitrary system files would not be killable. This was fixed
+by avoiding psdevtab files that are symlinks or have link counts
+higher than 1, and by not looking for /tmp/psdevtab anymore, as
+the reason for it to exist is really obsolete.
+
+w -s output has been fixed. Scripts that depend on w -s output
+should be examined. The output was broken enough to warrant this
+change; it was extremely buggy.
+
+
+NEWS for version 1.2.4 of procps
+
+I_WANT_A_BROKEN_PS environment variable turns off usage warning.
+
+"w <username>" sense corrected.
+
+argument order problem fixed.
+
+XConsole doesn't dump core on exit any more (only fclose if the
+file is open...)
+
+NEWS for version 1.2.3 of procps
+
+psupdate moved to /usr/sbin, since it is no longer necessary.
+
+Added wmconfig for Red Hat systems (others can use it if they
+want; if/when wmconfig becomes standard, I'll move it into the
+install target of the makefile).
+
+Ugly hack to get around a problem some people were getting with
+a too-small variable.
+
+The usage message no longer recommends a deprecated syntax. :-)
+
+NEWS for version 1.2.2 of procps
+
+Made procps report its version number correctly.
+Fixed typo in w.1 man page.
+
+NEWS for version 1.2.1 of procps
+
+New address for bug reports against procps: procps-bugs@redhat.com
+(That's not an official service of Red Hat Software, just an alias
+for me so that bugs get filed properly where I don't lose them...)
+
+Better memory checks.
+Fixed a file descriptor leak.
+In top, the space key updates immediately.
+Fixed broken signal code in top.
+Fixed broken screen size calculations in top.
+Fixed broken user count calculations in top.
+Fixed broken time difference calculations in w.
+Link libproc against libc explicitly for better co-existance with libc.
+
+NEWS for version 1.2 of procps
+
+Original author/maintainer, Michael K. Johnson <johnsonm@redhat.com>,
+has taken over maintenance again.
+
+psmisc removed, as it is better maintained separately. xload removed,
+as it is better maintained as part of XFree86. mknewpty removed, as
+it duplicates /dev/MAKEDEV and MAKEDEV is maintained.
+
+Support for 2.1.x kernels and for glibc 2.0.5.
+
+Lots of documentation updates.
+
+BFD support and shared library enabled by default.
+
+Binaries are no longer included in the archive -- get them from your
+favorite Linux distributor.
+
+free's display fixed in several ways: no such thing as cached swap,
+buffer+ display was incorrectly calculated, and buffer calculations
+didn't include cached memory.
+
+Removed mknewpty, because it wasn't perfect and collides with MAKEDEV.
+
+NEWS for version 1.01 of procps
+
+top bugfix release. Fixes memory leak, extra line after loadavg and broken
+no-idle mode. Also be a little more aggressive utmp 'from host' filtering in w.
+
+NEWS for version 1.00 of procps
+
+Fixed the ps -t without a -a segfault bug. Royal screwup on my part.
+Updated libproc parsing routine for the new vsize output as of 1.3.91-ish.
+Expanded the room for the FLAGS in ps -l due to high order bits now being set.
+
+Added a brand new top to the distribution. Highly run-time configurable. The
+old top is available for at least a release or so as "top.old". See the new man
+page for details, or just run it and type 'h'. This is courtesy of Helmut
+Geyer. Thanks Helmut!
+
+egrep -n '\<(tgetent|cm|top_clrtoeol|top_clrtobot|cl|ho|me|md|mr|tgoto)\>' on
+top.c and cleaned up all terminal strings being just dumped to stdout. All such
+strings are now tputs'd out with putchar. This should fix a lot of problems
+people have been having.
+
+Also cleaned up non-HZ based references to jiffies -> real time conversion. I
+may have missed one or two, though...
+
+Cleaned up some Makefile things. make distclean; make should really work now.
+removed function pointer warnings in xcpustate.c. .depend is properly removed
+as are the imake generated makefiles. Shared lib generation bug for libproc
+fixed. In general the build should be a lot cleaner, but may still have a glitch
+or two.
+
+Fixed a few (but probably not all) Alpha compatibility bugs dealing with memory
+alignment. Please let me know if I missed any, or if you like give me a test
+account on some Alpha. I don't have access to any Linux other than x86 which is
+notoriously forgiving about unaligned memory accesses. Thanks to Alfred Arnold
+(a.arnold@kfa-juelich.de) and Harald Koenig for their help so far with this.
+
+Completely (well almost) re-wrote 'w'. From on by default, J/PCPU display is
+accurate to 0.01s. w and top use readproc, so snap.c has gone away completely.
+
+'skill' should actually work now, but you may have to use '-c', '-u', etc. to
+actually get it to parse the command line correctly.
+
+*** Significant changes in psdevtab inverse device name resolution
+------------------------------------------------------------------
+Extended semantics of the -n (numeric) option to output the full device number
+in hexadecimal for the tty field. That way if /etc/psdevtab cannot be created
+rescanning the /dev directory can be short-circuited. Fixed incorrect file
+creation mode for /etc/psdevtab. I just forgot to alter my original 0 mode to
+something reasonable like 0664. Added fallback locations for psdevtab. First
+it tries /etc/psdevtab, then /tmp/psdevtab and then $HOME/.psdevtab. Also,
+decided to go ahead and create the devtab file with regular old write instead of
+the rw mmap. I still read it with mmap, but there should be no trouble with
+that even in ancient kernels. Also changed the semantics such that if any
+devtab file is found, it is assumed to be correct regardless of the relative
+timestamps of /dev and the file. Hopefully all this will avoid any unnecessary
+slowness. I'm still willing to reactivate the older somewhat broken code to
+do the mapping without any file as a fallback if the file doesn't exist.
+
+*** Significant changes in psdatabase/WCHAN inverse name resolution
+-------------------------------------------------------------------
+libproc reads directly from System.map, so psupdate and /etc/psdatabase are no
+longer necessary. Hopefully this will make kernel configuration management
+simpler requiring only the zImage and System.map, which being the stripped
+(compressed) kernel and the symbol table before stripping are natural
+complements. This is probably how things should have been all along even going
+back to kmem ps days four years ago. Oh well. This change should make dealing
+with x86, AXP, Sparc, etc binary formats for kernels a lot easier. All that is
+required of System.map is that there be exactly 3 space delimited columns:
+ "address[single space]anything_with_no_spaces[single space]symbol[newline]"
+[ Well, ok, the addresses have to be zero padded so that lexicographic order is
+the same as numerical order and the addresses all have to be the same ascii
+length and I haven't tested to see how resilient it is to bogus internal records
+like multiple newlines in a row. Hopefully aren't editting and commenting their
+System.map files. ;-) This could actually work on "sort < /proc/ksyms" also if
+we generalize the behavior to work with either two or three columns. ]
+
+We take advantage of the following files in this order:
+ PS_SYSTEM_MAP # may only point to System.map, not psdatabase
+ /boot/System.map-`uname -r`, # Note: this is the preferred path
+ /boot/System.map
+ /lib/modules/`uname -r`/System.map
+ /etc/psdatabase
+ /boot/psdatabase-`uname -r`,
+ /boot/psdatabase,
+ /lib/modules/`uname -r`/psdatabase
+
+The reason for the /lib/modules/*/file location is that I imagine many people
+have enough trouble keeping track of kernel version-dependent files in the
+filesystem as it is, so I didn't want to invent a new place. I keep things in
+/boot myself and don't usually have more than 8 or so kernel versions, so this
+works for me. I know not everyone uses modules, but it's just a search path
+folks... In case it isn't obvious from all of the above, this means that
+psupdate is no longer necessary. I include it in this release and include
+recognition of it because I realize that some distributions may have scripts
+which depend on the old semantics. I doubt there will ever be a compelling
+reason to not include support for generating or reading the old psdatabase
+files, but they aren't necessary anymore if you have the System.map files from
+the kernel builds.
+
+I'm not 100% sold on the ordering of the search path, but I think it makes
+sense. If you have reasons why it should be different I may be convincable.
+Also I'm interested in exactly what the output of 'nm' looks like on Alpha,
+Sparc, etc., architectures. It should be easy enough to adapt the code if it is
+basically the same format of <0 padded hex> ... <symbol>\n.
+
+Thanks to Helmut Geyer for the idea of living off the System.map file natively
+and Mike Dean for the idea of using an approximate binary search instead of
+padding out the lines of System.map with tons of spaces to get equal record
+lengths. The cost of doing it approximately is mild, mostly consisting of lots
+of scans to get to the next or last newline and a logarithmically few extra
+steps to get to the desired record. Only an order of magnitude guess for the
+record length is necessary. The code is all mine, though, so all bugs are due
+to me alone.
+
+NEWS for version 0.99a of procps
+================================
+This is a quick bug-fix release to solve a few thorny problems with my probably
+overzealous attempt to use the inline-assembly string.h and a Makefile bug or
+two. It also fixes free to +/- the cached column too and makes it ignore the
+new extra-pretty non-numeric lines that /proc/meminfo is spitting out. It also
+fixes the lack of set_linux_verion() in 'w' that caused no command line to be
+displayed. I am still working on a much condensed 'w' that should be a lot
+easier to maintain and a readproctree that should be usable by both 'ps',
+'pstree', and 'w'.
+
+Apparently memory-mapped files are pretty broken before the early 1.3.X kernels
+so I may have to rewrite devname.c to not use MAP_WRITE to create psdevtab. Some
+people have been claiming that /dev changes at boot-up in some rc scripts. I'm
+not really sure why they would want to do that. Seems kind of paranoid to
+continually re-make /dev/log. Anyhow, I'm open to suggestions for psdevtab
+behaviors. I've been thinking a /tmp/psdevtab fallback (with a careful world
+readable umask to avoid repetition) or maybe a $HOME/.psdevtab fallback too.
+
+NEWS for version 0.99 of procps
+===============================
+This file is a brief catalog of new features or developments in the package.
+For general information about using the programs see their man pages.
+
+NEW PACKAGES OR PROGRAMS
+========================
+
+LIBPROC
+ I've modularized some routines and fixed some long standing bugs. Replaced
+ the regex() recognition of /proc/PID with a simple check of the first
+ character of the filename being a digit which should be just as safe.
+
+ Added an opendir/readdir/closedir style interface to the process table. The
+ new interface seems cleaner, more intuitive and generally more applicable
+ (to me anyway). The only program which uses the new interface is ps. 'w'
+ will follow soon. 'top' may take a while longer... openproc,readproc, and
+ closeproc are implemented. I still want to do readproctab and rewindproc,
+ too though.
+
+ Added some kernel and package versioning things to make it easier to be run
+ time adaptable. Also updated sysinfo to understand any /proc/meminfo. A
+ /proc/stat parser should probably be in there as well with the appropriate
+ updates to vmstat and xcpustate.
+
+ The general direction procps should move in is lightweight command-line or
+ X11/Motif display/format programs and compartmentalized libproc routines to
+ parse all of the /proc files. This isolates the utilities from kernel
+ versioning.
+
+TTY DEVICE NUMBER TO NAME RESOLUTION
+ Tty device name <-> number mapping has been completely generalized. It now
+ stat's every character special file in /dev and builds a memory mapped table
+ of device names indexed in a way that makes lookup of name from number a
+ fast, constant time process. The extra overhead incurred by building
+ /etc/psdevtab is non-negligible if you have a large /dev and permissions to
+ write the file (or its directory) are required to update the file (which is
+ done if it does not exist or if /dev is newer than /etc/psdevtab).
+
+ Hence `root' should `ps' shortly after any modification to /dev (or chmod
+ 666 /etc/psdevtab :-) to avoid ordinary users rebuilding it over and over.
+ Since such modifications are rare, hopefully having a fallback $HOME
+ location will not be necessary. If the file is up to date, the overhead
+ incurred is very small. The generality bought is essentially optimal since
+ `ps' tailors its notion of name<->devno mapping according to the /dev of the
+ local system which is the canonical repository of this information.
+
+ In principle the name database could encompass all device majors. The file
+ would be large, but since I use mmap to access it, only the pages with the
+ major of interest are ever actually read off the disk. Right now I just use
+ the majors 2,3,4,5,19,20 which should cover both old and new systems with
+ both master and slave devices (I know... no reason for the masters... :-)
+ and the multiport serial devices. Also the 'mknewpty' script is provided
+ to update your /dev directory to the new pty master/slave devices.
+
+ The tty abbreviation scheme has been rationalized to match device special
+ files. The leading "tty" or "cu" is stripped, so cua3 -> a3, tty1 -> 1 and
+ ttyp9 -> p9. The t flag in ps now works with a full device names and to
+ pick up processes even if they aren't owned by the owner of ps, e.g.
+ "ps tcua0" picks up gpm for everyone. This seems desirable.
+
+WATCH
+ A little program similar to another called 'vis' which simply re-displays
+ in a polling fashion the output of other programs. "watch ps --sort:utime"
+ might be dubbed a poor man's 'top'. Though this has been included in procps
+ for some time it hasn't been built or installed by default. It is now.
+
+SKILL/SNICE
+ I have written the necessary machine-dependant file for 'skill' and tested
+ it somewhat under Linux. It seems to mostly work, but there are probably a
+ few glitches. This is a generalization of the 'killall' concept. You can
+ send signals or change priority based upon user, command basename (the same
+ that 'ps c' gives), terminal, etc. If you have a user named 'satan' "skill
+ -u satan" will kill all their processes. :-) See the man page for more
+ details.
+
+ An annoyance of the current implementation is that although permission to
+ send signals is based upon the real user id, /proc only gives the effective
+ uids of processes. Hence processes which you *could* kill because they're
+ suid-root (X say) won't be detected as kill-able. Either /proc + readproc
+ need to be updated to report the *real* uid to skil or skill needs to try to
+ send the signal even if the uid doesn't match.
+
+
+CHANGES TO OLD PROGRAMS
+=======================
+
+MAKEFILE
+ The directory hierarchy has been restructured. It is now easier to have the
+ multiple components to the suite under nearly autonomous administration.
+ The library code has also been moved to a subdirectory. The best thing
+ about the new setup is that things like Imake generated Makefiles with
+ preconceived notions of 'make install' can be used without getting into the
+ business of re-writing component package makefiles.
+
+ There is now an option to build a shared libproc.a which reduces 'ps' and
+ 'top' sizes by about 10K apiece. Simply change the value of SHARED. Also,
+ one may optionally install the library header files and archive/shared
+ object files into standard system directories. There are no library man
+ pages yet, but the headers are fairly descriptive.
+
+PS
+ Several long standing bugs have been fixed and much of the internal code was
+ re-written to use my new directory-style interface to the process table. In
+ particular if sorting is disabled (with '-o') the process entries are output
+ to the terminal as soon as possible (making it more helpful under heavy
+ system load).
+
+ I am considering several new additional features to `ps' including
+ regex filtering of which processes to list,
+ "grep -s" silent testing for existing of processes matching criteria,
+ run-time/user-defined output formats.
+ I would also like to completely phase the w,top code which uses the snapshot
+ interface instead of the 'readproc' interface. And of course adding long
+ options for the rest of the options would be nice too (I may not get around
+ to doing this anytime really soon so patches which implement any of these
+ things would most likely be gleefully accepted).
+
+PSUPDATE
+ psupdate has been updated to work with ELF kernels. If you compile it as
+ an ELF binary it will handle both a.out and ELF kernels. If you compile it
+ as an a.out binary it will only handle a.out kernels. Many thanks to Jeff
+ Uphoff.
+
+ psupdate has also been updated to work with any binary type supported
+ by libbfd. This is the default configuration.
+ Many thanks to David Mossberger-Tang.
+
+TOP
+ A user-defined format would be nice here too. Alternate sorting criteria
+ (top memory users instead of top CPU users, etc.) may be another interesting
+ alternative. Of course the sorting in ps can do all of that, but it doesn't
+ have any optimal screen update action going down... :-)
--- /dev/null
+-------------------------- general ------------------------
+
+Implement /usr/proc/bin tools like Solaris has.
+
+The main Makefile is broken. Try 'touch top.h' to see.
+The Makefile is too clever, so it's still not fixed.
+
+Don't these really belong in the procps package?
+ killall pstree fuser lsof who
+(they are maintained elsewhere, which causes version problems)
+
+Cache results of dev_to_tty.
+
+---------------------- kernel -------------------------
+
+Add an "adopted child" flag to mark processes that are not
+natural children of init. This can make --forest work better.
+
+Add a thread group ID, to be shared by all tasks that are related by
+the clone() system call. This ID might be made unique from boot to
+shutdown, perhaps being a 16-bit CPU number and 48-bit per-CPU
+serial number.
+
+Make the kernel group /proc listing output by thread group.
+Without this, a thread-aware ps must always sort processes.
+
+Supply the task ID (the "PID"/"TID") of the thread group leader.
+I define "leader" as the first process of a thread group.
+
+Don't reuse the task ID of a thread group leader until all threads
+are dead. Better yet, don't let the leader exit.
+
+Supply better data for top's CPU state display. Currently top has
+to subtract old numbers from new numbers and divide that result by
+the number of processors. The kernel won't even supply the number
+of processors in a portable way.
+
+Mark threads, and supply a list of other threads.
+
+Supply data for the ADDR and JOBC fields.
+
+Support & supply data for SL and RE.
+
+Add a /proc/*/tty symlink to eliminate guessing when /proc/*/fd is
+not accessable.
+
+Put unique ID at the top of System.map and in /proc, to make sure
+there is never a mismatch.
+
+Maybe just put the symbols in the kernel like some other systems do.
+Raul Miller writes: You might want to implement this as user data which just
+happens to come from a wierd source -- instead of just freeing the memory
+(like happens with init code), you want it to wind up in the buffer cache.
+
+Add /proc/*/.bindata files to avoid string parsing. It should be an array
+of 64-bit values on all machines. New entries go on the end and obsolete
+ones get filled in with something logical -- entries must never be deleted!
+
+Add all the stuff Solaris has. This would also replace ptrace.
+
+The kernel should report these task_struct members:
+ has_cpu
+ processor
+
+---------------------- w --------------------------
+
+The LOGIN@ column sometimes has a space in it. This makes correct
+scripting difficult.
+
+Verify that DNS control does not give a user the power to specify
+arbitrary data for the FROM column. (could set root's VGA color map!)
+
+---------------------- vmstat --------------------------
+
+Extract /proc/stat parsing from vmstat into libproc somewhere.
+
+--------------------- libproc ----------------------
+
+Stop storing fields with duplicate info (often different
+units: kB and pages, seconds and jiffies) in the proc_t struct.
+
+---------------------- top -------------------------
+
+Share more stuff with ps.
+
+---------------- ps for now, maybe move to libproc ------------------
+
+With forest output and a tty named /dev/this_is_my_tty, the position
+of the command name gets messed up. (we print too many spaces) (fixed?)
+
+Fix missing stuff for these formats: FB_j FB_l FB_v HP_f HP_*_ HP_fl JFMT OL_m
+(jobc,cpu,sl,re,cpu,prmgrp,cp,m_size,m_swap,m_share,vm_lib,m_dt)
+Note that "cpu" has two meanings.
+
+Add Beowulf support. This is ugly, since the current patches use a
+daemon to collect info and add a HOST field after the PID field.
+
+Query optimizer, put cheap/required process selection first.
+
+Avoid reading both /proc/*/status and /proc/*/stat. Actually, avoid
+reading lots of stuff! Avoidance got disabled. (at least don't read the
+environment!!!)
+
+Maybe ps should put a 'C' in front of fields when they are affected
+by cumulative mode. Debian ps did that. (move flag to common.h...)
+
+Support printing the client hostname (the FROM that w(1) uses) in place
+of a pty. Maybe do this when PS_PERSONALITY=linux.
+
+Disgusting color support, for completeness. (Debian ps had it)
+
+Disambiguate narrow tty info. (/dev/tty7 == /dev/pts/7 now)
+1------8 1--4
+ttyS2 S2
+ttyI31 I31
+pts/7 7 Short form could be /999.
+pts/9999 9999 Short form could just be trunctuated to /999.
+tty7 7 Short form could be vc-7.
+tty63 63 Short form could be vc63.
+
+Internationalization, as specified by XPG3, Volume 1, Commands and Utilities.
+(and suggested by Unix98) LC_TIME affects date format.
+
+----------------------- ps -----------------------
+
+Solve the "ps reports wrong date" bug. (recent processes on an SMP system
+are reported as being 5 days old, while boot processes look normal)
+(reported for procps-2.0.2 in May 1999)
+
+Show real-time priorities. (type & number)
+
+Add an option to select all processes that a user can kill.
+(related to RUID, EUID, tty, etc. -- but maybe ignore root power)
+
+Add a nice display option for killing things.
+ruser,euser,ppid,pid,pmem,stime,args isn't too bad
+
+Make the column alignment algorithm support this:
+ FOO BAR
+ 8 44444
+ 453 45
+ 45 2989
+ 63666 0
+ 34 333
+(useful for the UNIX tty and time values, since the time might look
+like 100-10:40:32 for old processes and the tty might have extra room)
+
+Improve long sort/format specifiers documentation and fill in the missing
+code as much as the kernel can support. Make sure that memory amounts are in
+pages when they should be and in kB when they should be, not backwards.
+
+output encoding: UTF8 --nul --null
+
+Make BSD formats use non-standard BSD time format, at least when it
+doesn't violate the "no whitespace" rule.
+
+Try to make -jl fit in 80 columns. Do we need more than 1000 pty devices,
+9 flag bits, etc.? (hmmm, Linux supports 2048 pty devices now, and we
+might also want to steal whitespace there when the time column overflows)
+
+When not in strict Unix98 mode, let foo=8 specify that foo is 8
+characters wide. Debian did that. Then foo=8=bar and foo=bar=8
+could change both header and width.
+
+Better unmangling of '?' as a tty. The shell destroys '?' when there
+is a filename that matches. If the argument seems like garbage,
+check for a file that might have screwed up the '?'.
+
+If the 'O' option is given something already implied by 'O',
+assume the user wanted a sorting option.
+
+Conflict:
+Digital THREAD is user,pcpu,pri,scnt,wchan,usertime,systime
+AIX THREAD is uname,pid,ppid,tid,S,C,PRI,scount,WCHAN,F,tty,bnd,comm
+AIX looks like this:
+ USER PID PPID TID S C PRI SC WCHAN FLAG TTY BND CMD
--- /dev/null
+#!/bin/sh
+# xconsole is capable of doing everything XConsole did, and is maintained...
+# it is not setuid root, so we just exit if called as non-root
+[ $(id -u) = 0 ] || exit 0
+exec xconsole -file /proc/kmsg "$@"
--- /dev/null
+.\" -*-Nroff-*-
+.\" This page Copyright (C) 1993 Matt Welsh, mdw@sunsite.unc.edu.
+.\" Freely distributable under the terms of the GPL
+.TH FREE 1 "20 Mar 1993 " "Cohesive Systems" "Linux User's Manual"
+.SH NAME
+free \- Display amount of free and used memory in the system
+.SH SYNOPSIS
+.BR "free " [ "\-b" " | " "\-k" " | " "\-m" "] [" "\-o" "] [" "\-s"
+.I delay
+.RB "] [" "\-t" "] [" "\-V" ]
+.SH DESCRIPTION
+\fBfree\fP displays the total amount of free and used physical and swap
+memory in the system, as well as the buffers used by the kernel.
+The shared memory column should be ignored; it is obsolete.
+.SS Options
+The \fB-b\fP switch displays the amount of memory in bytes; the
+\fB-k\fP switch (set by default) displays it in kilobytes; the \fB-m\fP
+switch displays it in megabytes.
+.PP
+The \fB-t\fP switch displays a line containing the totals.
+.PP
+The \fB-o\fP switch disables the display of a "buffer adjusted" line. Unless
+specified \fBfree\fP subtracts/adds buffer memory from/to the used/free memory
+reports (respectively!).
+.PP
+The \fB-s\fP switch activates continuous polling \fIdelay\fP seconds apart. You
+may actually specify any floating point number for \fIdelay\fP,
+.BR usleep (3)
+is used for microsecond resolution delay times.
+.PP
+The \fB\-V\fP displays version information.
+.SH FILES
+.ta
+.IR /proc/meminfo "\-\- memory information"
+.fi
+
+.SH "SEE ALSO"
+.BR ps (1),
+.BR top(1)
+
+.SH AUTHORS
+Written by Brian Edmonds.
+
+Send bug reports to <acahalan@cs.uml.edu>
+
--- /dev/null
+/* free.c - a /proc implementation of free */
+/* Dec14/92 by Brian Edmonds */
+/* Thanks to Rafal Maszkowski for the Total line */
+
+#include "proc/sysinfo.h"
+#include "proc/version.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <getopt.h>
+
+#define S(X) ( ((unsigned long long)(X) << 10) >> byteshift)
+
+static int byteshift = 10;
+static int total = 0;
+
+int main(int argc, char *argv[]){
+ int i;
+ int old_fmt = 0;
+ int rtime = 0;
+
+ /* check startup flags */
+ while( (i = getopt(argc, argv, "bkmos:tV") ) != -1 )
+ switch (i) {
+ case 'b': byteshift = 0; break;
+ case 'k': byteshift = 10; break;
+ case 'm': byteshift = 20; break;
+ case 'o': old_fmt = 1; break;
+ case 's': rtime = 1000000 * atof(optarg); break;
+ case 't': total = 1; break;
+ case 'V': display_version(); exit(0);
+ default:
+ fprintf(stderr, "usage: %s [-b|-k|-m] [-o] [-s delay] [-t] [-V]\n", argv[0]);
+ return 1;
+ }
+
+ do {
+ meminfo();
+ printf(" total used free shared buffers cached\n");
+ printf(
+ "%-7s %10Ld %10Ld %10Ld %10Ld %10Ld %10Ld\n", "Mem:",
+ S(kb_main_total),
+ S(kb_main_used),
+ S(kb_main_free),
+ S(kb_main_shared),
+ S(kb_main_buffers),
+ S(kb_main_cached)
+ );
+ if(!old_fmt){
+ printf(
+ "-/+ buffers/cache: %10Ld %10Ld\n",
+ S(kb_main_used-kb_main_buffers-kb_main_cached),
+ S(kb_main_free+kb_main_buffers+kb_main_cached)
+ );
+ }
+ printf(
+ "%-7s %10Ld %10Ld %10Ld\n", "Swap:",
+ S(kb_swap_total),
+ S(kb_swap_used),
+ S(kb_swap_free)
+ );
+ if(total == 1){
+ printf(
+ "%-7s %10Ld %10Ld %10Ld\n", "Total:",
+ S(kb_main_total + kb_swap_total),
+ S(kb_main_used + kb_swap_used),
+ S(kb_main_free + kb_swap_free)
+ );
+ }
+ if(rtime){
+ fputc('\n', stdout);
+ fflush(stdout);
+ usleep(rtime);
+ }
+ } while(rtime);
+
+ return 0;
+}
--- /dev/null
+Return-Path: <qpliu@ulch.Princeton.EDU>
+Date: Wed, 24 Feb 93 23:37:45 -0500
+From: qpliu@ulch.Princeton.EDU (Quowong P Liu)
+To: johnsonm@stolaf.edu
+Subject: Suggestions for procps
+Reply-To: qpliu@princeton.edu
+
+[...]
+
+Since you are collecting programs that use the proc-fs, I have included
+some patches to GNU finger that allow it to read the proc information
+that it uses.
+
+[...]
+
+Here the diffs for GNU finger begin.
+-------------BEGIN---------------
+diff -ru finger-1.37.orig/lib/os.c finger-1.37/lib/os.c
+--- finger-1.37.orig/lib/os.c Thu Oct 22 17:01:10 1992
++++ finger-1.37/lib/os.c Mon Feb 8 00:56:32 1993
+@@ -23,7 +23,9 @@
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ #include <sys/file.h>
++#ifndef linux
+ #include <sys/acct.h>
++#endif
+ #include <time.h>
+ #include <packet.h>
+
+@@ -43,9 +45,11 @@
+
+ #ifdef HAVE_PROC_FS
+ #include <sys/signal.h>
++#ifndef linux
+ #include <sys/fault.h>
+ #include <sys/syscall.h>
+ #include <sys/procfs.h>
++#endif /*linux*/
+ #endif
+
+ #include <general.h>
+@@ -193,6 +197,7 @@
+ long idle, current_time, get_last_access ();
+ char *hostname, *ttyloc, *tty_location ();
+ #ifdef HAVE_PROC_FS
++#ifndef linux
+ prpsinfo_t procinfo;
+ struct procent
+ {
+@@ -202,6 +207,16 @@
+ char fname[sizeof (procinfo.pr_fname)];
+ }
+ *proctable, *tableptr;
++#else
++ struct procent
++ {
++ time_t start;
++ int uid;
++ dev_t tty;
++ char fname[15];
++ }
++ *proctable, *tableptr;
++#endif /* linux */
+ int nprocs = 0;
+ #endif /* HAVE_PROC_FS */
+
+@@ -235,6 +250,7 @@
+ searching through user list. */
+
+ #ifdef HAVE_PROC_FS
++#ifndef linux
+ {
+ extern char *savedir ();
+ char *dirstring = savedir ("/proc", 2*1024, &nprocs);
+@@ -280,6 +296,64 @@
+ free (dirstring);
+ }
+ }
++#else /* linux */
++ {
++
++ extern char *savedir ();
++ char *dirstring = savedir ("/proc", 2*1024, &nprocs);
++ char *proc;
++ int procfd;
++ char procfile[17], procstatbuffer[1024];
++ struct stat proc_fs_stat;
++ char procstate;
++ int tmp_tty; /* dev_t is unsigned, -1 means no controlling tty */
++
++ /* Allocate process table */
++ if (nprocs)
++ proctable = (struct procent *) xmalloc (sizeof *proctable * nprocs);
++
++ /* Walk processes */
++ if (dirstring && nprocs)
++ {
++ for (tableptr = proctable, proc = dirstring;
++ *proc; proc += strlen (proc) + 1)
++ {
++ sprintf (procfile, "/proc/%.5s/stat", proc);
++
++ if ((procfd = open (procfile, O_RDONLY)) >= 0
++ && read (procfd, procstatbuffer, 1024))
++ {
++ /* see /usr/src/linux/fs/proc/array.c
++ * this is for 0.99.4
++ */
++ sscanf (procstatbuffer, "%*d (%14s %c %*d %*d %*d %d "
++ "%*d %*u %*u %*u %*u %*u %*d %*d %*d %*d %*d %*d %*u "
++ "%*u %hd" /* " %*u %*u %*u %*u %*u %*u %*u %*u %*d %*d "
++ "%*d %*d %*u" */,
++ tableptr->fname, &procstate, &tmp_tty,
++ &tableptr->start);
++ tableptr->fname[strlen(tableptr->fname)-1] = 0; /*trailing )*/
++ tableptr->tty = tmp_tty;
++ if (fstat (procfd, &proc_fs_stat) == 0)
++ tableptr->uid = proc_fs_stat.st_uid;
++
++ /* Only collect non-zombies with controlling tty */
++ if (tmp_tty > 0 && procstate != 'Z')
++ {
++ tableptr++;
++ }
++ else
++ nprocs--;
++
++ close (procfd);
++ }
++ else
++ nprocs--;
++ }
++ free (dirstring);
++ }
++ }
++#endif /* linux */
+ #endif /* HAVE_PROC_FS */
+
+
+@@ -332,10 +406,14 @@
+
+ if (stat (device_name, &finfo) != -1)
+ {
++#ifdef linux
++ dev_t tty = finfo.st_rdev&0xff;
++#else
+ #ifdef HAVE_ST_RDEV
+ dev_t tty = finfo.st_rdev;
+ #else
+ dev_t tty = finfo.st_dev;
++#endif
+ #endif
+ int file;
+
+diff -ru finger-1.37.orig/lib/packet.c finger-1.37/lib/packet.c
+--- finger-1.37.orig/lib/packet.c Wed Oct 21 18:04:38 1992
++++ finger-1.37/lib/packet.c Mon Feb 8 01:10:00 1993
+@@ -348,7 +348,9 @@
+ perror (filename);
+ }
+
++#ifndef linux /* doesn't have fsync (as of .99.4) */
+ fsync (file);
++#endif
+ close (file);
+ }
+
+diff -ru finger-1.37.orig/lib/savedir.c finger-1.37/lib/savedir.c
+--- finger-1.37.orig/lib/savedir.c Fri Oct 16 21:52:40 1992
++++ finger-1.37/lib/savedir.c Mon Feb 8 01:06:47 1993
+@@ -132,7 +132,7 @@
+ char *
+ stpcpy (dest, source)
+ char *dest;
+- char *source;
++ const char *source; /* gcc insists on prototype consistency */
+ {
+ while ((*dest++ = *source++) != '\0')
+ /* Do nothing. */ ;
+diff -ru finger-1.37.orig/src/finger.c finger-1.37/src/finger.c
+--- finger-1.37.orig/src/finger.c Wed Oct 21 20:41:13 1992
++++ finger-1.37/src/finger.c Mon Feb 8 00:56:32 1993
+@@ -192,6 +192,9 @@
+ long addr;
+ char *finger_server = NULL;
+ int suppress_hostname = 0;
++#if defined(linux) /* gethostbyaddr evidently returns pointer to static area */
++ int do_hostfree = 0;
++#endif /* linux */
+
+
+ username = savestring (arg);
+@@ -237,6 +240,9 @@
+ {
+ host = (struct hostent *) xmalloc (sizeof (struct hostent));
+ host->h_name = hostname;
++#if defined (linux)
++ do_hostfree = 1;
++#endif /* linux */
+ }
+ }
+ else
+@@ -296,6 +302,11 @@
+ if (finger_server)
+ free (finger_server);
+
++#if !defined (linux)
+ if (host)
+ free (host);
++#else
++ if (host && do_hostfree)
++ free (host);
++#endif
+ }
+-------------END-------------
--- /dev/null
+From: Nix <nix@esperi.demon.co.uk>
+Date: Tue, 2 Mar 1999 05:25:08 +0000 (GMT)
+Subject: Re: [PATCH] Re: that fputs() thing
+
+
+1999-03-02 Nix <nix@esperi.demon.co.uk>
+
+ * stdlib/fputs.c (fputs): Return `len' rather than 0 on success.
+
+*** 2.1/stdio/fputs.c.orig Tue Mar 2 05:17:12 1999
+--- 2.1/stdio/fputs.c Tue Mar 2 05:18:07 1999
+***************
+*** 27,35 ****
+ {
+ const size_t len = strlen (s);
+ if (len == 1)
+! return putc (*s, stream) == EOF ? EOF : 0;
+ if (fwrite ((void *) s, 1, len, stream) != len)
+ return EOF;
+! return 0;
+ }
+ weak_alias (fputs, fputs_unlocked)
+--- 27,35 ----
+ {
+ const size_t len = strlen (s);
+ if (len == 1)
+! return putc (*s, stream) == EOF ? EOF : len;
+ if (fwrite ((void *) s, 1, len, stream) != len)
+ return EOF;
+! return len;
+ }
+ weak_alias (fputs, fputs_unlocked)
--- /dev/null
+,\" t
+.\" (The preceding line is a note to broken versions of man to tell
+.\" them to pre-process this man page with tbl)
+.\" Man page for kill.
+.\" Licensed under version 2 of the GNU General Public License.
+.\" Written by Albert Cahalan; converted to a man page by
+.\" Michael K. Johnson
+.TH KILL 1 "November 21, 1999" "Linux" "Linux User's Manual"
+.SH NAME
+kill \- report process status
+
+.SH SYNOPSIS
+.TS
+l l.
+kill pid ... Send SIGTERM to every process listed.
+kill signal pid ... Send a signal to every process listed.
+kill -s signal pid ... Send a signal to every process listed.
+kill -l List all signal names.
+kill -L List all signal names in a nice table.
+kill -l signal Convert a signal number into a name.
+.TE
+
+.SH DESCRIPTION
+The default signal for kill is TERM. Use -l or -L to list available signals.
+Particularly useful signals include HUP, INT, KILL, STOP, CONT, and 0.
+Alternate signals may be specified in three ways: -9 -SIGKILL -KILL.
+
+.SH SIGNALS
+The signals listed below may be available for use with kill.
+When known constant, numbers and default behavior are shown.
+
+.TS
+lB rB lB lB
+lfCW r l l.
+Name Num Action Description
+.TH
+ALRM 14 exit
+HUP 1 exit
+INT 2 exit
+KILL 9 exit this signal may not be blocked
+PIPE 13 exit
+POLL exit
+PROF exit
+TERM 15 exit
+USR1 exit
+USR2 exit
+VTALRM exit
+STKFLT exit may not be implemented
+PWR ignore may exit on some systems
+WINCH ignore
+CHLD ignore
+URG ignore
+TSTP stop may interact with the shell
+TTIN stop may interact with the shell
+TTOU stop may interact with the shell
+STOP stop this signal may not be blocked
+CONT restart continue if stopped, otherwise ignore
+ABRT 6 core
+FPE 8 core
+ILL 4 core
+QUIT 3 core
+SEGV 11 core
+TRAP 5 core
+SYS core may not be implemented
+EMT core may not be implemented
+BUS core core dump may fail
+XCPU core core dump may fail
+XFSZ core core dump may fail
+.TE
+
+.SH NOTES
+Your shell (command line interpreter) may have a built-in kill command.
+You may need to run the command described here as /bin/kill to solve
+the conflict.
+
+.SH EXAMPLES
+kill -9 -1
+.br
+kill -l 11
+.br
+kill -L
+.br
+kill 123 543 2341 3453
+
+.SH "SEE ALSO"
+top(1) skill(1) kill(2) renice(1) nice(1)
+
+.SH STANDARDS
+This command meets appropriate standards. The -L flag is Linux-specific.
+
+.SH AUTHOR
+Albert Cahalan <acahalan@cs.uml.edu> wrote kill in 1999 to replace the
+version that was not standards compliant. Michael K. Johnson
+<johnsonm@redhat.com> is the current maintainer of the procps collection.
+
+Please send bug reports to <acahalan@cs.uml.edu>
--- /dev/null
+/*
+ * Copyright 1998 by Albert Cahalan; all rights reserved.
+ * This file may be used subject to the terms and conditions of the
+ * GNU Library General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+
+/* This is a minimal /bin/ps, designed to be smaller than the old ps
+ * while still supporting some of the more important features of the
+ * new ps. (for total size, note that this ps does not need libproc)
+ * It is suitable for Linux-on-a-floppy systems only.
+ *
+ * Maintainers: do not compile or install for normal systems.
+ * Anyone needing this will want to tweak their compiler anyway.
+ */
+
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/dir.h>
+
+#include <asm/param.h> /* HZ */
+#include <asm/page.h> /* PAGE_SIZE */
+
+static int P_euid;
+static int P_pid;
+static char P_cmd[16];
+static char P_state;
+static int P_ppid, P_pgrp, P_session, P_tty, P_tpgid;
+static unsigned long P_flags, P_min_flt, P_cmin_flt, P_maj_flt, P_cmaj_flt, P_utime, P_stime;
+static long P_cutime, P_cstime, P_priority, P_nice, P_timeout, P_it_real_value;
+static unsigned long P_start_time, P_vsize;
+static long P_rss;
+static unsigned long P_rss_rlim, P_start_code, P_end_code, P_start_stack, P_kstk_esp, P_kstk_eip;
+static unsigned P_signal, P_blocked, P_sigignore, P_sigcatch;
+static unsigned long P_wchan, P_nswap, P_cnswap;
+
+
+#if 0
+static int screen_cols = 80;
+static int w_count;
+#endif
+
+static int want_one_pid;
+static const char *want_one_command;
+static int select_notty;
+static int select_all;
+
+static int ps_format;
+static int old_h_option;
+
+/* we only pretend to support this */
+static int show_args; /* implicit with -f and all BSD options */
+static int bsd_c_option; /* this option overrides the above */
+
+static int ps_argc; /* global argc */
+static char **ps_argv; /* global argv */
+static int thisarg; /* index into ps_argv */
+static char *flagptr; /* current location in ps_argv[thisarg] */
+
+
+#ifndef PAGE_SIZE
+#warning PAGE_SIZE not defined, assuming it is 4096
+#define PAGE_SIZE 4096
+#endif
+
+#ifndef HZ
+#warning HZ not defined, assuming it is 100
+#define HZ 100
+#endif
+
+
+
+static void usage(void){
+ fprintf(stderr,
+ "-C select by command name (minimal ps only accepts one)\n"
+ "-p select by process ID (minimal ps only accepts one)\n"
+ "-e all processes (same as ax)\n"
+ "a all processes w/ tty, including other users\n"
+ "x processes w/o controlling ttys\n"
+ "-f full format\n"
+ "-j,j job control format\n"
+ "v virtual memory format\n"
+ "-l,l long format\n"
+ "u user-oriented format\n"
+ "-o user-defined format (limited support, only \"ps -o pid=\")\n"
+ "h no header\n"
+/*
+ "-A all processes (same as ax)\n"
+ "c true command name\n"
+ "-w,w wide output\n"
+*/
+ );
+ exit(1);
+}
+
+/*
+ * Return the next argument, or call the usage function.
+ * This handles both: -oFOO -o FOO
+ */
+static const char *get_opt_arg(void){
+ const char *ret;
+ ret = flagptr+1; /* assume argument is part of ps_argv[thisarg] */
+ if(*ret) return ret;
+ if(++thisarg >= ps_argc) usage(); /* there is nothing left */
+ /* argument is the new ps_argv[thisarg] */
+ ret = ps_argv[thisarg];
+ if(!ret || !*ret) usage();
+ return ret;
+}
+
+
+/* return the PID, or 0 if nothing good */
+static void parse_pid(const char *str){
+ char *endp;
+ int num;
+ if(!str) goto bad;
+ num = strtol(str, &endp, 0);
+ if(*endp != '\0') goto bad;
+ if(num>0x7fff) goto bad; /* Linux PID limit */
+ if(num<1) goto bad;
+ if(want_one_pid) goto bad;
+ want_one_pid = num;
+ return;
+bad:
+ usage();
+}
+
+/***************** parse SysV options, including Unix98 *****************/
+static void parse_sysv_option(void){
+ do{
+ switch(*flagptr){
+ /**** selection ****/
+ case 'C': /* end */
+ if(want_one_command) usage();
+ want_one_command = get_opt_arg();
+ return; /* can't have any more options */
+ case 'p': /* end */
+ parse_pid(get_opt_arg());
+ return; /* can't have any more options */
+ case 'A':
+ case 'e':
+ select_all++;
+ select_notty++;
+case 'w': /* here for now, since the real one is not used */
+ break;
+ /**** output format ****/
+ case 'f':
+ show_args = 1;
+ /* FALL THROUGH */
+ case 'j':
+ case 'l':
+ if(ps_format) usage();
+ ps_format = *flagptr;
+ break;
+ case 'o': /* end */
+ /* We only support a limited form: "ps -o pid=" (yes, just "pid=") */
+ if(strcmp(get_opt_arg(),"pid=")) usage();
+ if(ps_format) usage();
+ ps_format = 'o';
+ old_h_option++;
+ return; /* can't have any more options */
+ /**** other stuff ****/
+#if 0
+ case 'w':
+ w_count++;
+ break;
+#endif
+ default:
+ usage();
+ } /* switch */
+ }while(*++flagptr);
+}
+
+/************************* parse BSD options **********************/
+static void parse_bsd_option(void){
+ do{
+ switch(*flagptr){
+ /**** selection ****/
+ case 'a':
+ select_all++;
+ break;
+ case 'x':
+ select_notty++;
+ break;
+ case 'p': /* end */
+ parse_pid(get_opt_arg());
+ return; /* can't have any more options */
+ /**** output format ****/
+ case 'j':
+ case 'l':
+ case 'u':
+ case 'v':
+ if(ps_format) usage();
+ ps_format = 0x80 | *flagptr; /* use 0x80 to tell BSD from SysV */
+ break;
+ /**** other stuff ****/
+ case 'c':
+ bsd_c_option++;
+#if 0
+ break;
+#endif
+ case 'w':
+#if 0
+ w_count++;
+#endif
+ break;
+ case 'h':
+ old_h_option++;
+ break;
+ default:
+ usage();
+ } /* switch */
+ }while(*++flagptr);
+}
+
+#if 0
+/* not used yet */
+static void choose_dimensions(void){
+ struct winsize ws;
+ char *columns;
+ /* screen_cols is 80 by default */
+ if(ioctl(1, TIOCGWINSZ, &ws) != -1 && ws.ws_col>30) screen_cols = ws.ws_col;
+ columns = getenv("COLUMNS");
+ if(columns && *columns){
+ long t;
+ char *endptr;
+ t = strtol(columns, &endptr, 0);
+ if(!*endptr && (t>30) && (t<(long)999999999)) screen_cols = (int)t;
+ }
+ if(w_count && (screen_cols<132)) screen_cols=132;
+ if(w_count>1) screen_cols=999999999;
+}
+#endif
+
+static void arg_parse(int argc, char *argv[]){
+ int sel = 0; /* to verify option sanity */
+ ps_argc = argc;
+ ps_argv = argv;
+ thisarg = 0;
+ /**** iterate over the args ****/
+ while(++thisarg < ps_argc){
+ flagptr = ps_argv[thisarg];
+ switch(*flagptr){
+ case '0' ... '9':
+ show_args = 1;
+ parse_pid(flagptr);
+ break;
+ case '-':
+ flagptr++;
+ parse_sysv_option();
+ break;
+ default:
+ show_args = 1;
+ parse_bsd_option();
+ break;
+ }
+ }
+ /**** sanity check and clean-up ****/
+ if(want_one_pid) sel++;
+ if(want_one_command) sel++;
+ if(select_notty || select_all) sel++;
+ if(sel>1 || select_notty>1 || select_all>1 || bsd_c_option>1 || old_h_option>1) usage();
+ if(bsd_c_option) show_args = 0;
+}
+
+/* return 1 if it works, or 0 for failure */
+static int stat2proc(int pid) {
+ char buf[800]; /* about 40 fields, 64-bit decimal is about 20 chars */
+ int num;
+ int fd;
+ char* tmp;
+ struct stat sb; /* stat() used to get EUID */
+ snprintf(buf, 32, "/proc/%d/stat", pid);
+ if ( (fd = open(buf, O_RDONLY, 0) ) == -1 ) return 0;
+ num = read(fd, buf, sizeof buf - 1);
+ fstat(fd, &sb);
+ P_euid = sb.st_uid;
+ close(fd);
+ if(num<80) return 0;
+ buf[num] = '\0';
+ tmp = strrchr(buf, ')'); /* split into "PID (cmd" and "<rest>" */
+ *tmp = '\0'; /* replace trailing ')' with NUL */
+ /* parse these two strings separately, skipping the leading "(". */
+ memset(P_cmd, 0, sizeof P_cmd); /* clear */
+ sscanf(buf, "%d (%15c", &P_pid, P_cmd); /* comm[16] in kernel */
+ num = sscanf(tmp + 2, /* skip space after ')' too */
+ "%c "
+ "%d %d %d %d %d "
+ "%lu %lu %lu %lu %lu %lu %lu "
+ "%ld %ld %ld %ld %ld %ld "
+ "%lu %lu "
+ "%ld "
+ "%lu %lu %lu %lu %lu %lu "
+ "%u %u %u %u " /* no use for RT signals */
+ "%lu %lu %lu",
+ &P_state,
+ &P_ppid, &P_pgrp, &P_session, &P_tty, &P_tpgid,
+ &P_flags, &P_min_flt, &P_cmin_flt, &P_maj_flt, &P_cmaj_flt, &P_utime, &P_stime,
+ &P_cutime, &P_cstime, &P_priority, &P_nice, &P_timeout, &P_it_real_value,
+ &P_start_time, &P_vsize,
+ &P_rss,
+ &P_rss_rlim, &P_start_code, &P_end_code, &P_start_stack, &P_kstk_esp, &P_kstk_eip,
+ &P_signal, &P_blocked, &P_sigignore, &P_sigcatch,
+ &P_wchan, &P_nswap, &P_cnswap
+ );
+/* fprintf(stderr, "stat2proc converted %d fields.\n",num); */
+ P_vsize /= 1024;
+ P_rss *= (PAGE_SIZE/1024);
+ if(num < 30) return 0;
+ if(P_pid != pid) return 0;
+ return 1;
+}
+
+static const char *do_time(unsigned long t){
+ int hh,mm,ss;
+ static char buf[32];
+ int cnt = 0;
+ t /= HZ;
+ ss = t%60;
+ t /= 60;
+ mm = t%60;
+ t /= 60;
+ hh = t%24;
+ t /= 24;
+ if(t) cnt = snprintf(buf, sizeof buf, "%d-", (int)t);
+ snprintf(cnt + buf, sizeof(buf)-cnt, "%02d:%02d:%02d", hh, mm, ss);
+ return buf;
+}
+
+static const char *do_user(void){
+ static char buf[32];
+ static struct passwd *p;
+ static int lastuid = -1;
+ if(P_euid != lastuid){
+ p = getpwuid(P_euid);
+ if(p) snprintf(buf, sizeof buf, "%-8.8s", p->pw_name);
+ else snprintf(buf, sizeof buf, "%5d ", P_euid);
+ }
+ return buf;
+}
+
+static const char *do_cpu(int longform){
+ static char buf[8];
+ strcpy(buf," - ");
+ if(!longform) buf[2] = '\0';
+ return buf;
+}
+
+static const char *do_mem(int longform){
+ static char buf[8];
+ strcpy(buf," - ");
+ if(!longform) buf[2] = '\0';
+ return buf;
+}
+
+static const char *do_stime(void){
+ static char buf[32];
+ strcpy(buf," - ");
+ return buf;
+}
+
+static void print_proc(void){
+ char tty[16];
+ snprintf(tty, sizeof tty, "%3d,%-3d", (P_tty>>8)&0xff, P_tty&0xff);
+ switch(ps_format){
+ case 0:
+ printf("%5d %s %s", P_pid, tty, do_time(P_utime+P_stime));
+ break;
+ case 'o':
+ printf("%d\n", P_pid);
+ return; /* don't want the command */
+ case 'l':
+ printf(
+ "%03x %c %5d %5d %5d %s %3d %3d - "
+ "%5ld %06x %s %s",
+ (unsigned)P_flags&0x777, P_state, P_euid, P_pid, P_ppid, do_cpu(0),
+ (int)P_priority, (int)P_nice, P_vsize/(PAGE_SIZE/1024),
+ (unsigned)(P_wchan&0xffffff), tty, do_time(P_utime+P_stime)
+ );
+ break;
+ case 'f':
+ printf(
+ "%8s %5d %5d %s %s %s %s",
+ do_user(), P_pid, P_ppid, do_cpu(0), do_stime(), tty, do_time(P_utime+P_stime)
+ );
+ break;
+ case 'j':
+ printf(
+ "%5d %5d %5d %s %s",
+ P_pid, P_pgrp, P_session, tty, do_time(P_utime+P_stime)
+ );
+ break;
+ case 'u'|0x80:
+ printf(
+ "%8s %5d %s %s %5ld %4ld %s %c %s %s",
+ do_user(), P_pid, do_cpu(1), do_mem(1), P_vsize, P_rss, tty, P_state,
+ do_stime(), do_time(P_utime+P_stime)
+ );
+ break;
+ case 'v'|0x80:
+ printf(
+ "%5d %s %c %s %6d - - %5d %s",
+ P_pid, tty, P_state, do_time(P_utime+P_stime), (int)P_maj_flt,
+ (int)P_rss, do_mem(1)
+ );
+ break;
+ case 'j'|0x80:
+ printf(
+ "%5d %5d %5d %5d %s %5d %c %5d %s",
+ P_ppid, P_pid, P_pgrp, P_session, tty, P_tpgid, P_state, P_euid, do_time(P_utime+P_stime)
+ );
+ break;
+ case 'l'|0x80:
+ printf(
+ "%03x %5d %5d %5d %3d %3d "
+ "%5ld %4ld %06x %c %s %s",
+ (unsigned)P_flags&0x777, P_euid, P_pid, P_ppid, (int)P_priority, (int)P_nice,
+ P_vsize, P_rss, (unsigned)(P_wchan&0xffffff), P_state, tty, do_time(P_utime+P_stime)
+ );
+ break;
+ default:
+ }
+ if(show_args) printf(" [%s]\n", P_cmd);
+ else printf(" %s\n", P_cmd);
+}
+
+
+int main(int argc, char *argv[]){
+ arg_parse(argc, argv);
+#if 0
+ choose_dimensions();
+#endif
+ if(!old_h_option){
+ const char *head;
+ switch(ps_format){
+ default: /* can't happen */
+ case 0: head = " PID TTY TIME CMD"; break;
+ case 'l': head = " F S UID PID PPID C PRI NI ADDR SZ WCHAN TTY TIME CMD"; break;
+ case 'f': head = "USER PID PPID C STIME TTY TIME CMD"; break;
+ case 'j': head = " PID PGID SID TTY TIME CMD"; break;
+ case 'u'|0x80: head = "USER PID %CPU %MEM VSZ RSS TTY S START TIME COMMAND"; break;
+ case 'v'|0x80: head = " PID TTY S TIME MAJFL TRS DRS RSS %MEM COMMAND"; break;
+ case 'j'|0x80: head = " PPID PID PGID SID TTY TPGID S UID TIME COMMAND"; break;
+ case 'l'|0x80: head = " F UID PID PPID PRI NI VSZ RSS WCHAN S TTY TIME COMMAND"; break;
+ }
+ printf("%s\n",head);
+ }
+ if(want_one_pid){
+ if(stat2proc(want_one_pid)) print_proc();
+ else exit(1);
+ }else{
+ struct direct *ent; /* dirent handle */
+ DIR *dir;
+ int ouruid;
+ int found_a_proc;
+ found_a_proc = 0;
+ ouruid = getuid();
+ dir = opendir("/proc");
+ while(( ent = readdir(dir) )){
+ if(*ent->d_name<'0' || *ent->d_name>'9') continue;
+ if(!stat2proc(atoi(ent->d_name))) continue;
+ if(want_one_command){
+ if(strcmp(want_one_command,P_cmd)) continue;
+ }else{
+ if(!select_notty && P_tty==-1) continue;
+ if(!select_all && P_euid!=ouruid) continue;
+ }
+ found_a_proc++;
+ print_proc();
+ }
+ closedir(dir);
+ exit(!found_a_proc);
+ }
+ return 0;
+}
--- /dev/null
+.\" This file Copyright 1992, 1997 Michael K. Johnson <johnsonm@redhat.com>
+.\" and 1996 Charles L. Blake <cblake@bbn.com>
+.\" It may be distributed under the GNU Public License, version 2, or
+.\" any higher version. See section COPYING of the GNU Public license
+.\" for conditions under which this file may be redistributed.
+.TH PS 1 "3 Sep 1997" "Cohesive Systems" "Linux User's Manual"
+.SH NAME
+ps \- report process status
+.SH SYNOPSIS
+ps [\fBlujsvmaxScewhrnu\fR] [\fBt\fIxx\fR] \
+[\fBO\fR[\fB+\fR|\fB-\fR]\fIk1\fR[[\fB+\fR|\fB-\fR]\fIk2\fR...]] \
+[\fIpids\fR]
+
+there are also three long options:
+
+.BR \-\-sort\fIX [ + | - ] \fIkey [,[ + | - ] \fIkey [, ... ]]
+
+.B "\-\-help"
+
+.B "\-\-version"
+
+More long options are on the way...
+.SH DESCRIPTION
+.B "ps "
+gives a snapshot of the current processes. If you want a repetitive
+update of this status, use
+.BR top .
+This man page documents the
+.IR /proc -based
+version of
+.BR ps ,
+or tries to.
+.PP
+.SH "COMMAND-LINE OPTIONS"
+The command-line options for this version of
+.B ps
+are derived from the BSD version of
+.BR ps ,
+not the System V version.
+
+The command-line arguments should \fBnot\fP be preceeded by a `\-' character,
+because in the future, a `\-' will be used to indicate Unix98-standard
+command-line arguments, while no `\-' will indicate the current
+``extended BSD'' style of command line arguments.
+
+For now, ps will give you a warning if you use a `\-' for a short option,
+but it will still work. If you have shell scripts which use BSD-style
+arguments to ps, take heed of the warning and fix them, or else your
+scripts will fail to function correctly at some point in the future.
+If you want to turn off the warnings, set the
+.B I_WANT_A_BROKEN_PS
+environment variable.
+
+There are also some ``long options'' in GNU style; see below for those.
+.PP
+.PD 0
+.TP 0.5i
+.B "l "
+long format
+.TP 0.5i
+.B "u "
+user format: gives user name and start time
+.TP 0.5i
+.B "j "
+jobs format: pgid sid
+.TP 0.5i
+.B "s"
+signal format
+.TP 0.5i
+.B "v "
+vm format
+.TP 0.5i
+.B "m "
+displays memory info (combine with
+.B p
+flag to get number of pages).
+.TP 0.5i
+.B "f "
+"forest" family tree format for command line
+.TP 0.5i
+.B "a "
+show processes of other users too
+.TP 0.5i
+.B "x "
+show processes without controlling terminal
+.TP 0.5i
+.B "S "
+add child cpu time and page faults
+.TP 0.5i
+.B "c "
+command name from task_struct
+.TP 0.5i
+.B "e "
+show environment after command line and ` + '
+.TP 0.5i
+.B "w "
+wide output: don't truncate command lines to fit on one line.
+To be exact, every w that is specified will add another possible
+line to the output. If the space isn't needed it isn't used. You
+may up to 100
+.BR w 's.
+.TP 0.5i
+.B "h "
+no header
+.TP 0.5i
+.B "r "
+running procs only
+.TP 0.5i
+.B "n "
+numeric output for
+.BR USER " and " WCHAN .
+.PD 1
+.TP 0.5i
+.BI t xx
+only procs with controlling tty \fIxx\fR; for \fIxx\fR you may use either the
+name of a device file under "/dev" or that name with either
+.IR tty " or " cu
+sliced off. This is the reverse heuristic that ps uses to print out the
+abbreviated tty name in the \fBTT\fR field, e.g.
+.BR "ps t1" .
+.TP 0.5i
+.BR O [ + | - ] \fIk1 [,[ + | - ] \fIk2 [, ... ]]
+Order the process listing according to the multi-level sort specified by
+the sequence of \fIshort\fR keys from \fBSORT KEYS\fR, \fIk1\fR, \fIk2\fR, ...
+Default order specifications exist for each of the various formats of \fBps\fR.
+These are over-ridden by a user specified ordering. The `+' is quite optional,
+merely re-iterating the default direction on a key. `-' reverses direction only
+on the key it precedes. As with \fBt\fR and \fIpids\fR, the O option must be
+the last option in a single command argument, but specifications in successive
+arguments are catenated.
+.TP 0.5i
+.I pids
+List only the specified processes; they are comma-delimited. The
+list must be given immediately after the last option in a single command-line
+argument, with no intervening space, e.g.
+.BR "ps j1,4,5" .
+Lists specified in subsequent arguments are catenated, e.g.
+.B ps l 1,2 3,4 5 6
+will list all of the processes 1-6 in long format. If pids are given, they
+are listed no matter what. If a tty is given matching processes are listed
+no matter what. These two features override the 'a' and 'x' flags.
+.SH "LONG COMMAND\-LINE OPTIONS"
+These options are preceeded by a double\-hyphen.
+.TP 0.5i
+.BR \-\-sort\fIX [ + | - ] \fIkey [,[ + | - ] \fIkey [, ... ]]
+Choose a \fImulti-letter key\fR from the \fBSORT KEYS\fR section. \fIX\fR may be
+any convenient separator character. To be GNU-ish use `='. The `+' is really
+optional since default direction is increasing numerical or lexicographic order.
+E.g.:
+.B ps jax --sort=uid,-ppid,+pid
+.TP 0.5i
+.B "\-\-help"
+Get a help message that summarizes the usage and gives a list of
+supported sort keys. This list may be more up to date than this man
+page.
+.TP 0.5i
+.B "\-\-version"
+Display version and source of this program.
+.SH "SORT KEYS"
+Note that the values used in sorting are the internal values \fBps\fR uses and
+\fInot\fR the `cooked' values used in some of the output format fields. If
+someone wants to volunteer to write special comparison functions for the cooked
+values, ... ;-)
+
+SHORT LONG DESCRIPTION
+.PD 0
+.TP 0.5i
+c cmd simple name of executable
+.TP 0.5i
+C cmdline full command line
+.TP 0.5i
+f flags flags as in long format F field
+.TP 0.5i
+g pgrp process group ID
+.TP 0.5i
+G tpgid controlling tty process group ID
+.TP 0.5i
+j cutime cumulative user time
+.TP 0.5i
+J cstime cumulative system time
+.TP 0.5i
+k utime user time
+.TP 0.5i
+K stime system time
+.TP 0.5i
+m min_flt number of minor page faults
+.TP 0.5i
+M maj_flt number of major page faults
+.TP 0.5i
+n cmin_flt cumulative minor page faults
+.TP 0.5i
+N cmaj_flt cumulative major page faults
+.TP 0.5i
+o session session ID
+.TP 0.5i
+p pid process ID
+.TP 0.5i
+P ppid parent process ID
+.TP 0.5i
+r rss resident set size
+.TP 0.5i
+R resident resident pages
+.TP 0.5i
+s size memory size in kilobytes
+.TP 0.5i
+S share amount of shared pages
+.TP 0.5i
+t tty the minor device number of tty
+.TP 0.5i
+T start_time time process was started
+.TP 0.5i
+U uid user ID number
+.TP 0.5i
+u user user name
+.TP 0.5i
+v vsize total VM size in bytes
+.TP 0.5i
+y priority kernel scheduling priority
+.PD 1
+.SH "FIELD DESCRIPTIONS"
+.TP 0.5i
+.B "PRI "
+This is the counter field in the task struct. It is the time in
+.B HZ
+of the process's possible timeslice.
+.TP 0.5i
+.B "NI "
+Standard unix nice value; a positive value means less cpu time.
+.TP 0.5i
+.B "SIZE "
+Virtual image size; size of text+data+stack.
+.TP 0.5i
+.B "RSS "
+Resident set size; kilobytes of program in memory.
+.TP 0.5i
+.B "WCHAN "
+Name of the kernel function where the process is sleeping, with the
+.RB ` sys_ '
+stripped from the function name. If
+.I /etc/psdatabase
+does not exist, it is just a hex number instead.
+.TP 0.5i
+.B "STAT "
+Information about the status of the process. The first field is
+.B R
+for runnable,
+.B S
+for sleeping,
+.B D
+for uninterruptible sleep,
+.B T
+for stopped or traced, or
+.B Z
+for a zombie process. The second field contains
+.B W
+if the process has no resident pages. The third field is
+.B N
+if the process has a positive nice value
+.RB ( NI
+field).
+.TP 0.5i
+.B "TT "
+Controlling tty.
+.TP 0.5i
+.B "PAGEIN "
+Number of major page faults (page faults that cause pages to be read
+from disk, including pages read from the buffer cache).
+.TP 0.5i
+.B "TRS "
+Text resident size.
+.TP 0.5i
+.B "SWAP "
+Kilobytes (or pages if
+.B p
+is used) on swap device.
+.TP 0.5i
+.B "SHARE "
+Shared memory.
+.SH UPDATING
+This
+.BR proc -based
+.B ps
+works by reading the files in the
+.B proc
+filesystem, mounted on
+.BR /proc .
+This
+.B ps
+does not need to be suid
+.B kmem
+or have any privileges to run.
+.I "Do not give this ps any special permissions."
+.PP
+You will need to put in place the appropriate System.map file
+when you install a new kernel in order
+to get meaningful information from the
+.B WCHAN
+field. This should be done every time you compile a new kernel. You should
+also run 'ps' as root once and then any time the tty devices in the "/dev"
+directory change.
+
+As of procps-1.00, ps/top read System.map directly if it is available. The
+search path for kernel address-to-symbol resolution is:
+.nf
+ $PS_SYSTEM_MAP
+ /boot/System.map-`uname -r`
+ /boot/System.map
+ /lib/modules/`uname -r`/System.map
+ /etc/psdatabase
+ /boot/psdatabase-`uname -r`
+ /boot/psdatabase,
+ /lib/modules/`uname -r`/psdatabase
+.fi
+.PP
+.SH NOTES
+The member
+.B used_math
+of
+.B task_struct
+is not shown, since
+.B crt0.s
+checks to see if math is present. This causes the math flag to be set
+for all processes, and so it is worthless.
+.PP
+Programs swapped out to disk will be shown without command line
+arguments, and unless the
+.B c
+option is given, in parentheses.
+.PP
+.B %CPU
+shows the cputime/realtime percentage. It will not add up to 100%
+unless you are lucky. It is time used divided by the time the process
+has been running.
+.PP
+The
+.B SIZE
+and
+.B RSS
+fields don't count the page tables and the
+.B task_struct
+of a proc; this is at least 12k of memory that is always resident.
+.B SIZE
+is the virtual size of the proc (code+data+stack).
+.SH AUTHOR
+.B ps
+was originally written by Branko Lankester <lankeste@fwi.uva.nl>. Michael K.
+Johnson <johnsonm@redhat.com> re-wrote it significantly to use the proc
+filesystem, changing a few things in the process. Michael Shields
+<mjshield@nyx.cs.du.edu> added the pid-list feature. Charles
+Blake <cblake@bbn.com> added multi-level sorting, the dirent-style library, the
+device name-to-number mmaped database, the approximate binary search directly
+on System.map, and many code and documentation cleanups. David Mossberger-Tang
+wrote the generic BFD support for psupdate. Michael K. Johnson
+<johnsonm@redhat.com> is the current maintainer.
+
+Please send bug reports to <acahalan@cs.uml.edu>
--- /dev/null
+/*
+ * ps.c - show process status
+ *
+ * Copyright (c) 1992 Branko Lankester
+ *
+ * Snarfed and HEAVILY modified for procps by Michael K. Johnson,
+ * (johnsonm@sunsite.unc.edu). What is used is what is required to have a
+ * common interface.
+ *
+ * Massive modifications by Charles Blake (cblake@bbn.com). Rewrite
+ * of the system process table code, multilevel sorting, device number
+ * database, forest feature (contributed by ...), environment variables, GNU
+ * style long options, pid list filtering (contributed by Michael Shields).
+ *
+ * Michael K. Johnson <johnsonm@redhat.com> again in charge, merging
+ * patches that have accumulated over a long time.
+ *
+ * Changes Copyright (C) 1993, 1994, 1997 Michael K. Johnson,
+ * and Copyright (C) 1995, 1996 Charles Blake
+ * See file COPYING for copyright details.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <pwd.h>
+#include <time.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/resource.h>
+#include <sys/param.h>
+
+#include <proc/version.h>
+#include <proc/readproc.h>
+#include <proc/procps.h>
+#include <proc/devname.h>
+#include <proc/tree.h>
+#include <proc/sysinfo.h>
+#include <proc/status.h>
+#include <proc/compare.h>
+
+static void show_short(char*, proc_t*);
+static void show_long (char*, proc_t*);
+static void show_user (char*, proc_t*);
+static void show_jobs (char*, proc_t*);
+static void show_sig (char*, proc_t*);
+static void show_vm (char*, proc_t*);
+static void show_m (char*, proc_t*);
+static void show_regs (char*, proc_t*);
+
+/* this struct replaces the previously parallel fmt_fnc and hdrs */
+static struct {
+ void (*format)(char*,proc_t*);
+ char CL_option_char;
+ const char* default_sort;
+ const char* header;
+} mode[] = {
+ { show_short, 0 , "Up", " PID TTY STAT TIME COMMAND" },
+ { show_long, 'l', "Pp", " FLAGS UID PID PPID PRI NI SIZE RSS WCHAN STA TTY TIME COMMAND" },
+ { show_user, 'u', "up", "USER PID %CPU %MEM SIZE RSS TTY STAT START TIME COMMAND" },
+ { show_jobs, 'j', "gPp"," PPID PID PGID SID TTY TPGID STAT UID TIME COMMAND" },
+ { show_sig, 's', "p", " UID PID SIGNAL BLOCKED IGNORED CATCHED STAT TTY TIME COMMAND" },
+ { show_vm, 'v', "r", " PID TTY STAT TIME PAGEIN TSIZ DSIZ RSS LIM %MEM COMMAND" },
+ { show_m, 'm', "r", " PID TTY MAJFLT MINFLT TRS DRS SIZE SWAP RSS SHRD LIB DT COMMAND" },
+ { show_regs, 'X', "p", "NR PID STACK ESP EIP TMOUT ALARM STAT TTY TIME COMMAND" },
+ { NULL, 0, NULL, NULL }
+};
+
+/* some convenient integer constants corresponding to the above rows. */
+enum PS_MODALITY { PS_D = 0, PS_L, PS_U, PS_J, PS_S, PS_V, PS_M, PS_X };
+
+static char * prtime (char *s, unsigned long t, unsigned long rel);
+static void usage (char* context);
+static void set_cmdspc (int w_opts);
+static void show_procs (unsigned maxcmd, int do_header, int, void*,int);
+static void show_cmd_env (char* tskcmd, char** cmd, char** env, unsigned maxch);
+static void show_a_proc (proc_t* the_proc, unsigned maxcmd);
+static void show_time (char *s, proc_t * p);
+static void add_node (char *s, proc_t *task);
+static int node_cmp (const void *s1, const void *s2);
+static void show_tree (int n, int depth, char *continued);
+static void show_forest (void);
+
+static int CL_fmt = 0;
+
+/* process list filtering command line options */
+
+static int CL_all,
+ CL_kern_comm,
+ CL_no_ctty,
+ CL_run_only;
+static char * CL_ctty;
+static pid_t * CL_pids; /* zero-terminated list, dynamically allocated */
+
+/* process display modification command line options */
+
+static int CL_show_env,
+ CL_num_outp, /* numeric fields for user, wchan, tty */
+ CL_sort = 1,
+ CL_forest,
+ CL_Sum,
+ CL_pg_shift = (PAGE_SHIFT - 10); /* default: show k instead of pages */
+
+/* Globals */
+
+static unsigned cmdspc = 80; /* space left for cmd+env after table per row */
+static int GL_current_time; /* some global system parameters */
+static long GL_time_now;
+static int GL_wchan_nout; /* this is can also be set on the command-line */
+
+
+/*****************************/
+int main(int argc, char **argv) {
+ char *p;
+ int width = 0,
+ do_header = 1,
+ user_ord = 0,
+ next_arg = 0,
+ toppid = 0,
+ pflags, N = 1;
+ void* args = NULL;
+ dev_t tty[2] = { 0 };
+ uid_t uid[1];
+
+ do {
+ --argc; /* shift to next arg. */
+ ++argv;
+ for (p = *argv; p && *p; ++p) {
+ switch (*p) {
+ case '-': /* "--" ==> long name options */
+ if (*(p+1) == '-') {
+ if (strncmp(p+2,"sort",4)==0) {
+ if (parse_long_sort(p+7))
+ usage("unrecognized long sort option\n");
+ user_ord = 1;
+ next_arg = 1;
+ break;
+ } else if (strncmp(p+2, "help", 4) == 0) {
+ usage(NULL);
+ return 0;
+ } else if (strncmp(p+2, "version", 6) == 0) {
+ display_version();
+ return 0;
+ } else if (*(p+2) != '\0') /* just '-- '; not an error */
+ usage("ps: unknown long option\n");
+ }
+ if (!getenv("I_WANT_A_BROKEN_PS")) {
+ fprintf(stderr,
+ "warning: `-' deprecated; use `ps %s', not `ps %s'\n",
+ (p+1), p);
+ }
+ break;
+ case 'l': CL_fmt = PS_L; /* replaceable by a */ break;
+ case 'u': CL_fmt = PS_U; /* loop over mode[] */ break;
+ case 'j': CL_fmt = PS_J; break;
+ case 's': CL_fmt = PS_S; break;
+ case 'v': CL_fmt = PS_V; break;
+ case 'm': CL_fmt = PS_M; break;
+ case 'X': CL_fmt = PS_X; /* regs */ break;
+
+ case 'r': CL_run_only = 1; /* list filters */ break;
+ case 'a': CL_all = 1; break;
+ case 'x': CL_no_ctty = 1; break;
+ case 't': CL_ctty = p + 1;
+ next_arg = 1; break;
+
+ case 'e': CL_show_env = 1; /* output modifiers */ break;
+ case 'f': CL_forest = 1;
+ CL_kern_comm = 0; break;
+ case 'c': CL_kern_comm = 1; break;
+ case 'w': ++width; break;
+ case 'h': do_header = 0; break;
+ case 'n': CL_num_outp = 1;
+ GL_wchan_nout = 1; break;
+ case 'S': CL_Sum = 1; break;
+ case 'p': CL_pg_shift = 0; break;
+ case 'o': CL_sort = !CL_sort; break;
+ case 'O':
+ if (parse_sort_opt(p+1))
+ usage("short form sort flag parse error\n");
+ user_ord = 1;
+ next_arg = 1;
+ break;
+ case 'V': display_version(); exit(0);
+ default:
+ /* Step through, reading+alloc space for comma-delim pids */
+ if (isdigit(*p)) {
+ while (isdigit(*p)) {
+ CL_pids = xrealloc(CL_pids, (toppid + 2)*sizeof(pid_t));
+ CL_pids[toppid++] = atoi(p);
+ while (isdigit(*p))
+ p++;
+ if (*p == ',')
+ p++;
+ }
+ CL_pids[toppid] = 0;
+ next_arg = 1;
+ }
+ if (*p)
+ usage("unrecognized option or trailing garbage\n");
+ }
+ if (next_arg) {
+ next_arg = 0;
+ break; /* end loop over chars in this argument */
+ }
+ }
+ } while (argc > 1);
+
+ if (!CL_sort) /* since the unsorted mode is intended to be speedy */
+ CL_forest = 0; /* turn off the expensive forest option as well. */
+
+ if (CL_fmt == PS_L) {
+ if (open_psdb(NULL)) GL_wchan_nout = 1;
+ }
+
+ set_cmdspc(width);
+
+ if (!(GL_current_time = uptime(0,0)))
+ return 1;
+ GL_time_now = time(0L);
+
+ if (CL_sort && !user_ord)
+ parse_sort_opt(mode[CL_fmt].default_sort);
+
+ /* NOTE: all but option parsing has really been done to enable
+ * multiple uid/tty/state filtering as well as multiple pid filtering
+ */
+ pflags = PROC_ANYTTY; /* defaults */
+
+ if (!CL_kern_comm) pflags |= PROC_FILLCMD; /* verbosity flags */
+ if (CL_fmt == PS_M) pflags |= PROC_FILLMEM;
+ if (CL_show_env) pflags |= PROC_FILLENV;
+ if (!CL_num_outp) pflags |= PROC_FILLUSR;
+
+ if (CL_no_ctty) pflags &= ~PROC_ANYTTY; /* filter flags */
+ if (CL_run_only) { pflags |= PROC_STAT; args = "RD"; }
+ else if (!CL_all) { pflags |= PROC_UID; args = uid; uid[0] = getuid(); pflags &= ~PROC_STAT; }
+ if (CL_pids) { pflags |= PROC_PID; args = CL_pids; pflags &= ~PROC_UID; pflags &= ~PROC_STAT; }
+ if (CL_ctty) {
+ if ((tty[0] = tty_to_dev(CL_ctty)) == (dev_t)-1) {
+ fprintf(stderr, "the name `%s' is not a tty\n", CL_ctty);
+ exit(1);
+ }
+ pflags = (pflags | PROC_TTY) & ~(PROC_ANYTTY|PROC_STAT|PROC_UID|PROC_PID);
+ args = tty;
+ }
+ show_procs(cmdspc, do_header, pflags, args, N);
+ return 0;
+}
+
+/***************************/
+/* print a context dependent usage message and maybe exit */
+static void usage(char* context) {
+ fprintf(stderr,
+ "%s"
+ "usage: ps acehjlnrsSuvwx{t<tty>|#|O[-]u[-]U..} \\\n"
+ " --sort:[-]key1,[-]key2,...\n"
+ " --help gives you this message\n"
+ " --version prints version information\n",
+ context ? context : "");
+ if (context)
+ exit(1); /* prevent bad exit status by calling usage(NULL) */
+}
+
+/*****************************/
+/* set maximum chars displayed on a line based on screen size.
+ * Always allow for the header, with n+1 lines of output per row.
+ */
+static void set_cmdspc(int n) {
+ struct winsize win;
+ int h = strlen(mode[CL_fmt].header),
+ c = strlen("COMMAND");
+
+ if (ioctl(1, TIOCGWINSZ, &win) != -1 && win.ws_col > 0)
+ cmdspc = win.ws_col;
+ if (n > 100) n = 100; /* max of 100 'w' options */
+ if (cmdspc > h)
+ cmdspc = cmdspc*(n+1) - h + c;
+ else
+ cmdspc = cmdspc*n + c;
+}
+
+/*****************************/
+static const char *ttyc(int tty, int pid){
+ static char outbuf[8];
+ if(CL_num_outp)
+ snprintf(outbuf, sizeof outbuf, "%4.4x", tty);
+ else
+ dev_to_tty(outbuf, 4, tty, pid, ABBREV_TTY|ABBREV_DEV|ABBREV_PTS);
+ return outbuf;
+}
+
+/*****************************/
+/* This is the main driver routine that iterates over the process table.
+ */
+static void show_procs(unsigned maxcmd, int do_header, int pflags, void* args, int N) {
+ static proc_t buf; /* less dynamic memory allocation when not sorting */
+ PROCTAB* tab;
+ proc_t **ptable = NULL, *next, *retbuf = NULL;
+ int n = 0;
+
+ /* initiate process table scan */
+ tab = openproc(pflags, args, N);
+ if (!tab) {
+ fprintf(stderr, "Error: can not access /proc.\n");
+ exit(1);
+ }
+
+ if (do_header) puts(mode[CL_fmt].header); /* print header */
+
+ if (!(CL_sort || CL_forest)) /* when sorting and forest are both */
+ retbuf = &buf; /* off we can use a static buffer */
+
+ while ((next = readproc(tab,retbuf))) { /* read next process */
+ n++; /* Now either: */
+ if (CL_forest) { /* add process to tree */
+ /* FIXME: this static is disgusting, but to keep binary
+ * compatibility within the 1.2 series I'll just go from
+ * 256 bytes to 1024 bytes, which should be good enough
+ * for most people.... :-( In the future, the format
+ * format function should probably dynamically allocate
+ * strings.
+ */
+ static char s[1024];
+ (mode[CL_fmt].format)(s, next);
+ if (CL_fmt != PS_V && CL_fmt != PS_M)
+ show_time(s+strlen(s), next);
+ add_node(s, next);
+ } else if (CL_sort) { /* add process to table */
+ ptable = xrealloc(ptable, n*sizeof(proc_t*));
+ ptable[n-1] = next;
+ } else { /* or show it right away */
+ show_a_proc(&buf, maxcmd);
+ if (buf.cmdline) free((void*)(buf.cmdline[0]));
+ if (buf.environ) free((void*)(buf.environ[0]));
+ }
+ }
+ if (!n) {
+ fprintf(stderr, "No processes available.\n");
+ exit(1);
+ }
+ if (CL_sort && !CL_forest) { /* just print sorted table */
+ int i;
+ qsort(ptable, n, sizeof(proc_t*), (void*)mult_lvl_cmp);
+ for (i = 0; i < n; i++) {
+ show_a_proc(ptable[i], maxcmd);
+ freeproc(ptable[i]);
+ }
+ free(ptable);
+ } else if (CL_forest)
+ show_forest();
+}
+
+/*****************************/
+/* show the trailing command and environment in available space.
+ * use abbreviated cmd if requested, NULL list, or singleton NULL string
+ */
+static void show_cmd_env(char* tskcmd, char** cmd, char** env, unsigned maxch) {
+ if (CL_kern_comm) /* no () when explicit request for tsk cmd */
+ maxch = print_str(stdout, tskcmd, maxch);
+ else if (!cmd || !*cmd || (!cmd[1] && !*cmd)) {
+ /* no /proc//cmdline ==> bounding () */
+ if (maxch) {
+ fputc('(', stdout);
+ maxch--;
+ }
+ maxch = print_str(stdout, tskcmd, maxch);
+ if (maxch) {
+ fputc(')', stdout);
+ maxch--;
+ }
+ } else
+ maxch = print_strlist(stdout, cmd, " ", maxch);
+ if (CL_show_env && env)
+ print_strlist(stdout, env, " ", maxch);
+ fputc('\n', stdout);
+}
+
+
+/*****************************/
+/* format a single process for output.
+ */
+static void show_a_proc(proc_t* p, unsigned maxch) {
+ static char s[2048];
+ (mode[CL_fmt].format)(s, p);
+ if (CL_fmt != PS_V && CL_fmt != PS_M)
+ show_time(s+strlen(s), p);
+ printf("%s", s);
+ show_cmd_env(p->cmd, p->cmdline, p->environ, maxch);
+}
+
+/****** The format functions for the various formatting modes follow *****/
+
+/*****************************/
+static void show_short(char *s, proc_t *p) {
+ sprintf(s, "%5d %3s %s", p->pid, ttyc(p->tty,p->pid), status(p));
+}
+
+
+/*****************************/
+static void show_long(char *s, proc_t *p) {
+ char wchanb[32];
+
+ if (GL_wchan_nout)
+ sprintf(wchanb, " %-9lx ", p->wchan & 0xffffffff);
+ else
+ sprintf(wchanb, "%-11.11s", wchan(p->wchan));
+ sprintf(s, "%6lx %5d %5d %5d %3ld %3ld %6ld %5ld %-11.11s %s%3s",
+ p->flags, p->euid, p->pid, p->ppid, p->priority, p->nice,
+ p->vsize >> 10, p->rss << (PAGE_SHIFT - 10), wchanb, status(p),
+ ttyc(p->tty,p->pid));
+}
+
+
+/*****************************/
+static void show_jobs(char *s, proc_t *p) {
+ sprintf(s, "%5d %5d %5d %5d %3s %5d %s %5d ",
+ p->ppid, p->pid, p->pgrp, p->session, ttyc(p->tty,p->pid), p->tpgid, status(p),
+ p->euid);
+}
+
+
+/*****************************/
+static void show_user(char *s, proc_t *p) {
+ long pmem, total_time, seconds;
+ time_t start;
+ unsigned int pcpu;
+
+ if (CL_num_outp)
+ s += sprintf(s, "%5d ", p->euid);
+ else
+ s += sprintf(s, "%-8s ", p->euser);
+ /* Hertz, being UL, forces 64-bit calculation on 64-bit machines */
+ seconds = (((GL_current_time * Hertz) - p->start_time) / Hertz);
+ start = GL_time_now - seconds;
+ total_time = (p->utime + p->stime +
+ (CL_Sum ? p->cutime + p->cstime : 0));
+ pcpu = seconds ?
+ (total_time * 10 * 100 / Hertz) / seconds :
+ 0;
+ if (pcpu > 999) pcpu = 999;
+ pmem = p->rss * 1000 / (kb_main_total >> (PAGE_SHIFT-10));
+ sprintf(s, "%5d %2u.%u %2ld.%ld %5ld %5ld %3s %s %.6s ",
+ p->pid, pcpu / 10, pcpu % 10, pmem / 10, pmem % 10,
+ p->vsize >> 10, p->rss << (PAGE_SHIFT - 10), ttyc(p->tty,p->pid), status(p),
+ ctime(&start) + (GL_time_now - start > 3600*24 ? 4 : 10));
+}
+
+
+/*****************************/
+/* TODO: this is broken... but does anyone care? */
+static void show_sig(char *s, proc_t *p) {
+#undef SIGNAL_STRING /* not filled in by the function oldps calls */
+#ifdef SIGNAL_STRING
+#define TAIL(s) ((s)+(long)strlen(s)-8)
+ sprintf(s, "%5d %5d %s %s %s %s %s %3s ",
+ p->euid, p->pid,
+ TAIL(p->signal), TAIL(p->blocked), TAIL(p->sigignore), TAIL(p->sigcatch),
+ status(p), ttyc(p->tty,p->pid)
+ );
+#else
+ sprintf(s, "%5d %5d %08x %08x %08x %08x %s %3s ",
+ p->euid, p->pid,
+ (unsigned)p->signal, (unsigned)p->blocked, (unsigned)p->sigignore, (unsigned)p->sigcatch,
+ status(p), ttyc(p->tty,p->pid)
+ );
+#endif
+}
+
+
+/*****************************/
+static void show_vm(char *s, proc_t *p) {
+ int pmem;
+
+ s += sprintf(s,"%5d %3s %s", p->pid, ttyc(p->tty,p->pid), status(p));
+ show_time(s, p);
+ s += strlen(s);
+ s += sprintf(s, " %6ld %4ld %4ld %4ld ",
+ p->maj_flt + (CL_Sum ? p->cmaj_flt : 0),
+ p->vsize ? (p->end_code - p->start_code) >> 10 : 0,
+ p->vsize ? (p->vsize - p->end_code + p->start_code) >> 10 : 0,
+ p->rss << (PAGE_SHIFT - 10));
+ if(p->rss_rlim == RLIM_INFINITY)
+ s += sprintf(s, " xx ");
+ else
+ s += sprintf(s, "%5ld ", p->rss_rlim >> 10);
+ pmem = p->rss * 1000 / (kb_main_total >> (PAGE_SHIFT-10));
+ sprintf(s, "%2d.%d ", pmem / 10, pmem % 10);
+}
+
+
+
+/*****************************/
+static void show_m(char *s, proc_t *p) {
+ sprintf(s, "%5d %3s %6ld %6ld %5ld %5ld %5ld %5ld %5ld %5ld %5ld %3ld ",
+ p->pid, ttyc(p->tty,p->pid),
+ p->maj_flt + (CL_Sum ? p->cmaj_flt : 0),
+ p->min_flt + (CL_Sum ? p->cmin_flt : 0),
+ p->trs << CL_pg_shift,
+ p->drs << CL_pg_shift,
+ p->size << CL_pg_shift,
+ (p->size - p->resident) << CL_pg_shift,
+ p->resident << CL_pg_shift,
+ p->share << CL_pg_shift,
+ p->lrs << CL_pg_shift,
+ p->dt);
+}
+
+
+/*****************************/
+static void show_regs(char *s, proc_t *p) {
+ char time1[16], time2[16];
+
+ sprintf(s, "%2ld %5d %8lx %8lx %8lx %s %s %s %3s ",
+ p->start_code >> 26, p->pid, p->start_stack,
+ p->kstk_esp, p->kstk_eip,
+ prtime(time1, p->timeout, GL_current_time*Hertz),
+ prtime(time2, p->it_real_value, 0),
+ status(p), ttyc(p->tty,p->pid));
+}
+
+
+/*****************************/
+static char *prtime(char *s, unsigned long t, unsigned long rel) {
+ if (t == 0) {
+ sprintf(s, " ");
+ return s;
+ }
+ if ((long) t == -1) {
+ sprintf(s, " xx");
+ return s;
+ }
+ if ((long) (t -= rel) < 0)
+ t = 0;
+ if (t > 9999)
+ sprintf(s, "%5lu", t / 100);
+ else
+ sprintf(s, "%2lu.%02lu", t / 100, t % 100);
+ return s;
+}
+
+
+/*****************************/
+static void show_time(char *s, proc_t * p) {
+ unsigned t;
+ t = (p->utime + p->stime) / Hertz;
+ if (CL_Sum) t += (p->cutime + p->cstime) / Hertz;
+ sprintf(s, "%3d:%02d ", t / 60, t % 60);
+}
+
+
+
+/*****************************/
+/* fancy process family tree based cmdline printing. Building the tree
+ should be relegated to libproc and only the printing logic should
+ remain here.
+*/
+static struct tree_node * node; /* forest mode globals */
+static int nodes = 0;
+static int maxnodes = 0;
+
+/*****************************/
+
+static void add_node(char *s, proc_t *task) {
+ if (maxnodes == 0) {
+ maxnodes = 64;
+ node = (struct tree_node *)
+ xmalloc(sizeof(struct tree_node) * maxnodes);
+ }
+ if (nodes >= maxnodes) {
+ maxnodes *= 2;
+ node = (struct tree_node *)
+ xrealloc(node, sizeof(struct tree_node) * maxnodes);
+ }
+ node[nodes].proc = task;
+ node[nodes].pid = task->pid;
+ node[nodes].ppid = task->ppid;
+ node[nodes].line = strdup(s);
+ node[nodes].cmd = task->cmd;
+ node[nodes].cmdline = task->cmdline;
+ node[nodes].environ = task->environ;
+ node[nodes].children = 0;
+ node[nodes].have_parent = 0;
+ nodes++;
+}
+
+
+/*****************************/
+static int node_cmp(const void *s1, const void *s2) {
+ struct tree_node *n1 = (struct tree_node *) s1;
+ struct tree_node *n2 = (struct tree_node *) s2;
+ return n1->pid - n2->pid;
+}
+
+
+/*****************************/
+static void show_tree(int n, int depth, char *continued) {
+ int i, cols = 0;
+
+ fprintf(stdout, "%s", node[n].line);
+ for (i = 0; i < depth; i++) {
+ if (cols + 4 >= cmdspc - 1)
+ break;
+ if (i == depth - 1)
+ printf(" \\_ ");
+ else if (continued[i])
+ printf(" | ");
+ else
+ printf(" ");
+ cols += 4;
+ }
+ show_cmd_env(node[n].cmd, node[n].cmdline, node[n].environ, cmdspc - cols);
+ for (i = 0; i < node[n].children; i++) {
+ continued[depth] = i != node[n].children - 1;
+ show_tree(node[n].child[i], depth + 1, continued);
+ }
+}
+
+
+/*****************************/
+static void show_forest() {
+ register int i, j;
+ int parent;
+ char continued[1024];
+
+ if (CL_sort)
+ qsort((void*)node, nodes, sizeof(struct tree_node), (void*)node_mult_lvl_cmp);
+
+ for (i = 0; i < nodes; i++) {
+ if (node[i].ppid > 1 && node[i].pid != node[i].ppid) {
+ parent = -1;
+ for (j=0; j<nodes; j++)
+ if (node[j].pid==node[i].ppid)
+ parent = j;
+ } else
+ parent = -1;
+ if (parent >= 0) {
+ node[i].have_parent++;
+ if (node[parent].children == 0) {
+ node[parent].child = (int*)xmalloc(16 * sizeof(int*));
+ node[parent].maxchildren = 16;
+ }
+ else if (node[parent].children == node[parent].maxchildren) {
+ node[parent].maxchildren *= 2;
+ node[parent].child = (int*)xrealloc(node[parent].child,
+ node[parent].maxchildren
+ * sizeof(int*));
+ }
+ node[parent].child[node[parent].children++] = i;
+ }
+ }
+
+ for (i = 0; i < nodes; i++) {
+ if (!node[i].have_parent)
+ show_tree(i, 0, continued);
+ }
+}
--- /dev/null
+.\" Manual page for pgrep / pkill.
+.\" Licensed under version 2 of the GNU General Public License.
+.\" Copyright 2000 Kjetil Torgrim Homme
+.\"
+.TH PGREP 1 "June 25, 2000" "Linux" "Linux User's Manual"
+.SH NAME
+pgrep, pkill \- look up or signal processes based on name and other attributes
+
+.SH SYNOPSIS
+pgrep [\-flnvx] [\-d \fIdelimiter\fP] [\-P \fIppid\fP,...] [\-g \fIpgrp\fP,...]
+.br
+ [\-s \fIsid\fP,...] [\-u \fIeuid\fP,...] [\-U \fIuid\fP,...] [\-G \fIgid\fP,...]
+.br
+ [\-t \fIterm\fP,...] [\fIpattern\fP]
+
+pkill [\-\fIsignal\fP] [\-fnvx] [\-P \fIppid\fP,...] [\-g \fIpgrp\fP,...]
+.br
+ [\-s \fIsid\fP,...] [\-u \fIeuid\fP,...] [\-U \fIuid\fP,...] [\-G \fIgid\fP,...]
+.br
+ [\-t \fIterm\fP,...] [\fIpattern\fP]
+
+.SH DESCRIPTION
+\fBpgrep\fP looks through the currently running processes and lists the
+process IDs which matches the selection criteria to stdout. All
+the criteria have to match. For example,
+
+pgrep -u root sshd
+
+will only list the processes called \fBsshd\fP AND owned by \fBroot\fP.
+On the other hand,
+
+pgrep -u root,daemon
+
+will list the processes owned by \fBroot\fP OR \fBdaemon\fP.
+
+\fBpkill\fP will send the specified signal (by default \fBSIGTERM\fP)
+to each process instead of listing them on stdout.
+
+.SH OPTIONS
+.TP
+\-d \fIdelimiter\fP
+Sets the string used to delimit each process ID in the output (by
+default a newline). (\fBpgrep\fP only.)
+.TP
+\-f
+The \fIpattern\fP is normally only matched against the process name.
+When \-f is set, the full command line is used.
+.TP
+\-g \fIpgrp\fP,...
+Only match processes in the process group IDs listed. Process group 0
+is translated into \fBpgrep\fP's or \fBpkill\fP's own process group.
+.TP
+\-G \fIgid\fP,...
+Only match processes whose real group ID is listed. Either the
+numerical or symbolical value may be used.
+.TP
+\-l
+List the process name as well as the process ID. (\fBpgrep\fP only.)
+.TP
+\-n
+Select only the newest (most recently started) of the matching
+processes.
+.TP
+\-P \fIppid\fP,...
+Only match processes whose parent process ID is listed.
+.TP
+\-s \fIsid\fP,...
+Only match processes whose process session ID is listed. Session ID 0
+is translated into \fBpgrep\fP's or \fBpkill\fP's own session ID.
+.TP
+\-t \fIterm\fP,...
+Only match processes whose controlling terminal is listed. The
+terminal name should be specified without the "/dev/" prefix.
+.TP
+\-u \fIeuid\fP,...
+Only match processes whose effective user ID is listed. Either the
+numerical or symbolical value may be used.
+.TP
+\-U \fIuid\fP,...
+Only match processes whose real user ID is listed. Either the
+numerical or symbolical value may be used.
+.TP
+\-v
+Negates the matching.
+.TP
+\-x
+Only match processes whose name (or command line if \-f is specified)
+\fBexactly\fP match the \fIpattern\fP.
+.TP
+\-\fIsignal\fP
+Defines the signal to send to each matched process. Either the
+numeric or the symbolic signal name can be used. (\fBpkill\fP only.)
+
+.SH OPERANDS
+.TP
+\fIpattern\fP
+Specifies an Extended Regular Expression for matching against the
+process names or command lines.
+
+.SH EXAMPLES
+Example 1: Find the process ID of the \fBnamed\fP daemon:
+
+unix$ pgrep \-u root named
+
+Example 2: Make \fBsyslog\fP reread its configuration file:
+
+unix$ pkill \-HUP syslogd
+
+Example 3: Give detailed information on all \fBxterm\fP processes:
+
+unix$ ps \-fp $(pgrep \-d, \-x xterm)
+
+Example 4: Make all \fBnetscape\fP processes run nicer:
+
+unix$ renice +4 `pgrep netscape`
+
+.SH "EXIT STATUS"
+.TP
+.I "0"
+One or more processes matched the criteria.
+.TP
+.I "1"
+No processes matched.
+.TP
+.I "2"
+Syntax error in the command line.
+.TP
+.I "3"
+Fatal error: out of memory etc.
+
+.SH NOTES
+The process name used for matching is limited to the 15 characters
+present in the output of /proc/\fIpid\fP/stat. Use the \-f option to
+match against the complete command line, /proc/\fIpid\fP/cmdline.
+
+The running \fBpgrep\fP or \fBpkill\fP process will never report
+itself as a match.
+
+.SH BUGS
+The options \-n and \-v can not be combined. Let me know if you need
+to do this.
+
+Defunct processes are reported.
+
+.SH "SEE ALSO"
+ps(1) proc(5) regex(5)
+
+.SH STANDARDS
+\fBpkill\fP and \fBpgrep\fP were introduced in Sun's Solaris 7. This
+implementation is fully compatible.
+
+.SH AUTHOR
+Kjetil Torgrim Homme <kjetilho@ifi.uio.no>
+
+Michael K. Johnson <johnsonm@redhat.com> is the current maintainer of
+the procps package.
+
+Please send bug reports to <procps-bugs@redhat.com>
--- /dev/null
+/* emacs settings: -*- c-basic-offset: 8 tab-width: 8 -*-
+ *
+ * pgrep/pkill -- utilities to filter the process table
+ *
+ * Copyright 2000 Kjetil Torgrim Homme <kjetilho@ifi.uio.no>
+ *
+ * May be distributed under the conditions of the
+ * GNU General Public License; a copy is in COPYING
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <ctype.h>
+#include <string.h>
+#include <sys/types.h>
+#include <signal.h>
+#include <pwd.h>
+#include <grp.h>
+#include <regex.h>
+#include <errno.h>
+
+#include "proc/readproc.h"
+#include "proc/sig.h"
+#include "proc/devname.h"
+#include "proc/sysinfo.h"
+
+static int i_am_pkill = 0;
+char *progname = "pgrep";
+
+union el {
+ long num;
+ char * str;
+};
+
+/* User supplied arguments */
+
+static int opt_full = 0;
+static int opt_long = 0;
+static int opt_newest = 0;
+static int opt_negate = 0;
+static int opt_exact = 0;
+static int opt_signal = SIGTERM;
+
+static char *opt_delim = "\n";
+static union el *opt_pgrp = NULL;
+static union el *opt_gid = NULL;
+static union el *opt_ppid = NULL;
+static union el *opt_sid = NULL;
+static union el *opt_term = NULL;
+static union el *opt_euid = NULL;
+static union el *opt_uid = NULL;
+static char *opt_pattern = NULL;
+
+/* Prototypes */
+
+static union el *split_list (const char *, char, int (*)(const char *, union el *));
+static int conv_uid (const char *, union el *);
+static int conv_gid (const char *, union el *);
+static int conv_sid (const char *, union el *);
+static int conv_pgrp (const char *, union el *);
+static int conv_num (const char *, union el *);
+static int conv_str (const char *, union el *);
+static int match_numlist (long, const union el *);
+static int match_strlist (const char *, const union el *);
+
+
+static int
+usage (int opt)
+{
+ if (i_am_pkill)
+ fprintf (stderr, "Usage: pgrep [-flnvx] [-d DELIM] ");
+ else
+ fprintf (stderr, "Usage: pkill [-SIGNAL] [-fnvx] ");
+ fprintf (stderr, "[-P PPIDLIST] [-g PGRPLIST] [-s SIDLIST]\n"
+ "\t[-u EUIDLIST] [-U UIDLIST] [-G GIDLIST] [-t TERMLIST] "
+ "[PATTERN]\n");
+ exit (opt == '?' ? 0 : 2);
+}
+
+
+static void
+parse_opts (int argc, char **argv)
+{
+ char opts[32] = "";
+ int opt;
+ int criteria_count = 0;
+
+ if (strstr (argv[0], "pkill")) {
+ i_am_pkill = 1;
+ progname = "pkill";
+ /* Look for a signal name or number as first argument */
+ if (argc > 1 && argv[1][0] == '-') {
+ int sig;
+ sig = signal_name_to_number (argv[1] + 1);
+ if (sig == -1 && isdigit (argv[1][1]))
+ sig = atoi (argv[1] + 1);
+ if (sig != -1) {
+ int i;
+ for (i = 2; i < argc; i++)
+ argv[i-1] = argv[i];
+ --argc;
+ opt_signal = sig;
+ }
+ }
+ } else {
+ /* These options are for pgrep only */
+ strcat (opts, "ld:");
+ }
+
+ strcat (opts, "fnvxP:g:s:u:U:G:t:?");
+
+ while ((opt = getopt (argc, argv, opts)) != -1) {
+ switch (opt) {
+ case 'f':
+ opt_full = 1;
+ break;
+ case 'l':
+ opt_long = 1;
+ break;
+ case 'n':
+ opt_newest = 1;
+ ++criteria_count;
+ break;
+ case 'v':
+ opt_negate = 1;
+ break;
+ case 'x':
+ opt_exact = 1;
+ break;
+ case 'd':
+ opt_delim = strdup (optarg);
+ break;
+ case 'P':
+ opt_ppid = split_list (optarg, ',', conv_num);
+ if (opt_ppid == NULL)
+ usage (opt);
+ ++criteria_count;
+ break;
+ case 'g':
+ opt_pgrp = split_list (optarg, ',', conv_pgrp);
+ if (opt_pgrp == NULL)
+ usage (opt);
+ break;
+ case 's':
+ opt_sid = split_list (optarg, ',', conv_sid);
+ if (opt_sid == NULL)
+ usage (opt);
+ ++criteria_count;
+ break;
+ case 'u':
+ opt_euid = split_list (optarg, ',', conv_uid);
+ if (opt_euid == NULL)
+ usage (opt);
+ ++criteria_count;
+ break;
+ case 'U':
+ opt_uid = split_list (optarg, ',', conv_uid);
+ if (opt_uid == NULL)
+ usage (opt);
+ ++criteria_count;
+ break;
+ case 'G':
+ opt_gid = split_list (optarg, ',', conv_gid);
+ if (opt_gid == NULL)
+ usage (opt);
+ ++criteria_count;
+ break;
+ case 't':
+ opt_term = split_list (optarg, ',', conv_str);
+ if (opt_term == NULL)
+ usage (opt);
+ ++criteria_count;
+ break;
+ case '?':
+ usage (opt);
+ break;
+ }
+ }
+ if (argc - optind == 1)
+ opt_pattern = argv[optind];
+ else if (argc - optind > 1)
+ usage (0);
+ else if (criteria_count == 0) {
+ fprintf (stderr, "%s: No matching criteria specified\n",
+ progname);
+ usage (0);
+ }
+}
+
+
+static union el *
+split_list (const char *str, char sep, int (*convert)(const char *, union el *))
+{
+ char *copy = strdup (str);
+ char *ptr = copy;
+ char *sep_pos;
+ int i = 1, size = 32;
+ union el *list;
+
+ list = malloc (size * sizeof (union el));
+ if (list == NULL)
+ exit (3);
+
+ do {
+ sep_pos = strchr (ptr, sep);
+ if (sep_pos)
+ *sep_pos = 0;
+ if (convert (ptr, &list[i]))
+ ++i;
+ else
+ exit (2);
+ if (i == size) {
+ size *= 2;
+ list = realloc (list, size * sizeof (union el));
+ if (list == NULL)
+ exit (3);
+ }
+ if (sep_pos)
+ ptr = sep_pos + 1;
+ } while (sep_pos);
+
+ free (copy);
+ if (i == 1) {
+ free (list);
+ list = NULL;
+ } else {
+ list[0].num = i - 1;
+ }
+ return (list);
+}
+
+/* strict_atol returns a Boolean: TRUE if the input string contains a
+ plain number, FALSE if there are any non-digits. */
+
+static int
+strict_atol (const char *str, long *value)
+{
+ int res = 0;
+ int sign = 1;
+
+ if (*str == '+')
+ ++str;
+ else if (*str == '-') {
+ ++str;
+ sign = -1;
+ }
+
+ for ( ; *str; ++str) {
+ if (! isdigit (*str))
+ return (0);
+ res *= 10;
+ res += *str - '0';
+ }
+ *value = sign * res;
+ return (1);
+}
+
+static int
+conv_uid (const char *name, union el *e)
+{
+ struct passwd *pwd;
+
+ if (strict_atol (name, &e->num))
+ return (1);
+
+ pwd = getpwnam (name);
+ if (pwd == NULL) {
+ fprintf (stderr, "%s: invalid user name: %s\n",
+ progname, name);
+ return (0);
+ }
+ e->num = pwd->pw_uid;
+ return (1);
+}
+
+
+static int
+conv_gid (const char *name, union el *e)
+{
+ struct group *grp;
+
+ if (strict_atol (name, &e->num))
+ return (1);
+
+ grp = getgrnam (name);
+ if (grp == NULL) {
+ fprintf (stderr, "%s: invalid group name: %s\n",
+ progname, name);
+ return (0);
+ }
+ e->num = grp->gr_gid;
+ return (1);
+}
+
+
+static int
+conv_pgrp (const char *name, union el *e)
+{
+ if (! strict_atol (name, &e->num)) {
+ fprintf (stderr, "%s: invalid process group: %s\n",
+ progname, name);
+ return (0);
+ }
+ if (e->num == 0)
+ e->num = getpgrp ();
+ return (1);
+}
+
+
+static int
+conv_sid (const char *name, union el *e)
+{
+ if (! strict_atol (name, &e->num)) {
+ fprintf (stderr, "%s: invalid session id: %s\n",
+ progname, name);
+ return (0);
+ }
+ if (e->num == 0)
+ e->num = getsid (0);
+ return (1);
+}
+
+
+static int
+conv_num (const char *name, union el *e)
+{
+ if (! strict_atol (name, &e->num)) {
+ fprintf (stderr, "%s: not a number: %s\n",
+ progname, name);
+ return (0);
+ }
+ return (1);
+}
+
+
+static int
+conv_str (const char *name, union el *e)
+{
+ e->str = strdup (name);
+ return (1);
+}
+
+
+static int
+match_numlist (long value, const union el *list)
+{
+ int found = 0;
+ if (list == NULL)
+ found = 0;
+ else {
+ int i;
+ for (i = list[0].num; i > 0; i--) {
+ if (list[i].num == value)
+ found = 1;
+ }
+ }
+ return (found);
+}
+
+static int
+match_strlist (const char *value, const union el *list)
+{
+ int found = 0;
+ if (list == NULL)
+ found = 0;
+ else {
+ int i;
+ for (i = list[0].num; i > 0; i--) {
+ if (! strcmp (list[i].str, value))
+ found = 1;
+ }
+ }
+ return (found);
+}
+
+static void
+output_numlist (const union el *list)
+{
+ int i;
+ for (i = 1; i < list[0].num; i++)
+ printf ("%ld%s", list[i].num, opt_delim);
+
+ if (list[0].num)
+ printf ("%ld\n", list[i].num);
+}
+
+static void
+output_strlist (const union el *list)
+{
+ int i;
+ for (i = 1; i < list[0].num; i++)
+ printf ("%s%s", list[i].str, opt_delim);
+
+ if (list[0].num)
+ printf ("%s\n", list[i].str);
+}
+
+static PROCTAB *
+do_openproc ()
+{
+ PROCTAB *ptp;
+ int flags = PROC_FILLANY;
+
+ if (opt_pattern || opt_full)
+ flags |= PROC_FILLCMD;
+ if (opt_uid)
+ flags |= PROC_FILLSTATUS;
+ if (opt_euid && !opt_negate) {
+ int num = opt_euid[0].num;
+ int i = num;
+ uid_t *uids = malloc (num * sizeof (uid_t));
+ if (uids == NULL)
+ exit (3);
+ while (i-- > 0) {
+ uids[i] = opt_euid[i+1].num;
+ }
+ flags |= PROC_UID;
+ ptp = openproc (flags, uids, num);
+ } else {
+ ptp = openproc (flags);
+ }
+ return (ptp);
+}
+
+static regex_t *
+do_regcomp ()
+{
+ regex_t *preg = NULL;
+
+ if (opt_pattern) {
+ char *re;
+ char errbuf[256];
+ int re_err;
+
+ preg = malloc (sizeof (regex_t));
+ if (preg == NULL)
+ exit (3);
+ if (opt_exact) {
+ re = malloc (strlen (opt_pattern) + 5);
+ if (re == NULL)
+ exit (3);
+ sprintf (re, "^(%s)$", opt_pattern);
+ } else {
+ re = opt_pattern;
+ }
+
+ re_err = regcomp (preg, re, REG_EXTENDED | REG_NOSUB);
+ if (re_err) {
+ regerror (re_err, preg, errbuf, sizeof(errbuf));
+ fprintf (stderr, errbuf);
+ exit (2);
+ }
+ }
+ return preg;
+}
+
+#ifdef NOT_USED
+static time_t
+jiffies_to_time_t (long jiffies)
+{
+ static time_t time_of_boot = 0;
+ if (time_of_boot == 0) {
+ time_of_boot = time (NULL) - uptime (0, 0);
+ }
+ return (time_of_boot + jiffies / Hertz);
+}
+#endif
+
+static union el *
+select_procs ()
+{
+ PROCTAB *ptp;
+ proc_t task;
+ long newest_start_time = 0;
+ pid_t newest_pid = 0;
+ int matches = 0;
+ int size = 32;
+ regex_t *preg;
+ pid_t myself = getpid();
+ union el *list;
+ char cmd[4096];
+
+ list = malloc (size * sizeof (union el));
+ if (list == NULL)
+ exit (3);
+
+ ptp = do_openproc ();
+ preg = do_regcomp ();
+
+ memset (&task, 0, sizeof (task));
+ while (readproc (ptp, &task)) {
+ int match = 1;
+
+ if (task.pid == myself)
+ continue;
+ else if (opt_newest && task.start_time < newest_start_time)
+ match = 0;
+ else if (opt_ppid && ! match_numlist (task.ppid, opt_ppid))
+ match = 0;
+ else if (opt_pgrp && ! match_numlist (task.pgrp, opt_pgrp))
+ match = 0;
+ else if (opt_euid && ! match_numlist (task.euid, opt_euid))
+ match = 0;
+ else if (opt_uid && ! match_numlist (task.ruid, opt_uid))
+ match = 0;
+ else if (opt_gid && ! match_numlist (task.rgid, opt_gid))
+ match = 0;
+ else if (opt_sid && ! match_numlist (task.session, opt_sid))
+ match = 0;
+ else if (opt_term) {
+ if (task.tty == -1) {
+ match = 0;
+ } else {
+ char tty[256];
+ dev_to_tty (tty, sizeof(tty) - 1,
+ task.tty, task.pid, ABBREV_DEV);
+ match = match_strlist (tty, opt_term);
+ }
+ }
+ if (opt_long || (match && opt_pattern)) {
+ if (opt_full && task.cmdline) {
+ int i = 0;
+ int bytes = sizeof (cmd) - 1;
+
+ /* make sure it is always NUL-terminated */
+ cmd[bytes] = 0;
+ /* make room for SPC in loop below */
+ --bytes;
+
+ strncpy (cmd, task.cmdline[i], bytes);
+ bytes -= strlen (task.cmdline[i++]);
+ while (task.cmdline[i] && bytes > 0) {
+ strncat (cmd, " ", bytes);
+ strncat (cmd, task.cmdline[i], bytes);
+ bytes -= strlen (task.cmdline[i++]) + 1;
+ }
+ } else {
+ strcpy (cmd, task.cmd);
+ }
+ }
+
+ if (match && opt_pattern) {
+ if (regexec (preg, cmd, 0, NULL, 0) != 0)
+ match = 0;
+ }
+
+ if (match ^ opt_negate) { /* Exclusive OR is neat */
+ if (opt_newest) {
+ if (newest_start_time == task.start_time &&
+ newest_pid > task.pid)
+ continue;
+ newest_start_time = task.start_time;
+ newest_pid = task.pid;
+ matches = 0;
+ }
+ if (opt_long) {
+ char buff[4096];
+ sprintf (buff, "%d %s", task.pid, cmd);
+ list[++matches].str = strdup (buff);
+ } else {
+ list[++matches].num = task.pid;
+ }
+ if (matches == size) {
+ size *= 2;
+ list = realloc (list,
+ size * sizeof (union el));
+ if (list == NULL)
+ exit (3);
+ }
+ }
+
+ memset (&task, 0, sizeof (task));
+ }
+ closeproc (ptp);
+
+ list[0].num = matches;
+ return (list);
+}
+
+
+int
+main (int argc, char **argv)
+{
+ union el *procs;
+
+ parse_opts (argc, argv);
+
+ procs = select_procs ();
+ if (i_am_pkill) {
+ int i;
+ for (i = 1; i <= procs[0].num; i++) {
+ if (kill (procs[i].num, opt_signal) == -1)
+ fprintf (stderr, "pkill: %ld - %s\n",
+ procs[i].num, strerror (errno));
+ }
+ } else {
+ if (opt_long)
+ output_strlist (procs);
+ else
+ output_numlist (procs);
+ }
+ return ((procs[0].num) == 0 ? 1 : 0);
+}
--- /dev/null
+.so man1/pgrep.1
--- /dev/null
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+void usage(void){
+ fprintf(stderr,
+ "Usage: pmap [-r] [-x] pid...\n"
+ "-r ignored (compatibility option)\n"
+ "-x show details\n"
+ );
+ exit(1);
+}
+
+int one_proc(unsigned pid){
+ char cmdbuf[64];
+ char buf[32];
+ int fd;
+ sprintf(buf,"/proc/%u/cmdline",pid);
+ if( ((fd=open(buf)) == -1) return 1;
+ count = read(fd, cmdbuf, sizeof(cmdbuf)-1);
+ if(count<1) return 1;
+ cmdbuf[count] = '\0';
+ while(count--) if(!isprint(cmdbuf[count])) cmdbuf[count]=' ';
+ close(fd);
+ sprintf(buf,"/proc/%u/maps",pid);
+ if( ((fd=open(buf)) == -1) return 1;
+ printf("%u: %s\n", pid, cmdbuf);
+ if(x_option)
+ printf("Address kB Resident Shared Private Permissions Name\n");
+@@@ FIXME FIXME FIXME @@@
+}
+
+int main(int argc, char *argv[]){
+}
--- /dev/null
+diff -Naur procps-2.0.6/proc/.cvsignore procps-2.0.7/proc/.cvsignore
+--- procps-2.0.6/proc/.cvsignore Wed Dec 31 19:00:00 1969
++++ procps-2.0.7/proc/.cvsignore Fri Jul 14 16:45:01 2000
+@@ -0,0 +1,3 @@
++.depend
++signames.h
++libproc.so.*
--- /dev/null
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+That's all there is to it!
--- /dev/null
+# Auto-adaptive C library Makefile adapted for libproc, Chuck Blake.
+# Assumptions are basically that all the .c files in the CWD are modules
+# for the library and that all .h files are the interface to the library.
+
+# PROJECT SPECIFIC MACROS
+NAME = proc
+
+# INSTALLATION OPTIONS
+TOPDIR = /usr
+HDRDIR = $(TOPDIR)/include/$(NAME)# where to put .h files
+LIBDIR = $(TOPDIR)/lib# where to put library files
+SHLIBDIR = /lib# where to put shared library files
+HDROWN = $(OWNERGROUP) # owner of header files
+LIBOWN = $(OWNERGROUP) # owner of library files
+INSTALL = install
+
+# ----------------------------------------------------------------#
+# The rest is the auto-magic section -- highly GNU make dependent #
+# You should never need to edit this. #
+# ----------------------------------------------------------------#
+
+VC_SUF = ,v
+VC_PFX = RCS/
+RCSFILES = $(patsubst $(VC_PFX)%$(VC_SUF),%,$(wildcard $(VC_PFX)*$(VC_SUF)))
+
+# We take the union of RCS files and other files in CWD so that new files do
+# not need to alter this makefile. 'sort' removes duplicates. This allows the
+# convenience of compiling and testing new files before the initial check-in.
+
+SRC = $(sort $(wildcard *.c) $(filter %.c,$(RCSFILES)))
+HDR = $(sort $(wildcard *.h) $(filter %.h,$(RCSFILES)))
+
+OBJ = $(SRC:.c=.o)
+SONAME = lib$(NAME).so.$(LIBVERSION)
+
+ifeq ($(SHARED),1)
+CFLAGS += -fpic
+all: lib$(NAME).a $(SONAME)
+else
+all: lib$(NAME).a
+endif
+
+lib$(NAME).a: $(OBJ)
+ $(AR) rcs $@ $^
+
+$(SONAME): $(OBJ)
+ gcc -shared -Wl,-soname,$(SONAME) -o $@ $^ -lc
+ ln -sf $(SONAME) lib$(NAME).so
+
+# AUTOMATIC DEPENDENCY GENERATION -- GCC AND GNUMAKE DEPENDENT
+
+.depend:
+ $(strip $(CC) $(CFLAGS) -MM -MG $(SRC) > .depend)
+-include .depend
+
+# INSTALLATION
+
+install: all
+ if ! [ -d $(HDRDIR) ] ; then mkdir $(HDRDIR) ; fi
+ $(INSTALL) $(HDROWN) $(HDR) $(TOPDIR)/include/$(NAME)
+ $(INSTALL) $(LIBOWN) lib$(NAME).a $(LIBDIR)
+ifeq ($(SHARED),1)
+ $(INSTALL) $(LIBOWN) $(SONAME) $(SHLIBDIR)
+ cd $(SHLIBDIR) && ln -sf $(SONAME) lib$(NAME).so
+ ldconfig
+endif
+
+# VARIOUS SHORT CUT TARGETS
+.PHONY: all install dep clean distclean checkout checkclean
+
+dep: .depend
+
+clean:
+ $(RM) lib$(NAME).* *.o DEADJOE
+
+distclean: clean
+ $(RM) .depend *~
+
+checkout:
+ $(CO) $(RCSFILES)
+
+checkclean:
+ $(RM) $(RCSFILES)
+
+# CUSTOM c -> o rule so that command-line has minimal whitespace
+
+%.o : %.c
+ $(strip $(CC) $(CFLAGS) -c $<)
+
+# PROJECT SPECIFIC DEPENDENCIES/BUILD RULES
+
+
+version.o: version.c version.h
+ifdef MINORVERSION
+ $(strip $(CC) $(CFLAGS) -DVERSION=\"$(VERSION)\" -DSUBVERSION=\"$(SUBVERSION)\" -DMINORVERSION=\"$(MINORVERSION)\" -c version.c)
+else
+ $(strip $(CC) $(CFLAGS) -DVERSION=\"$(VERSION)\" -DSUBVERSION=\"$(SUBVERSION)\" -c version.c)
+endif
--- /dev/null
+/***********************************************************************\
+* Copyright (C) 1992-1998 by Michael K. Johnson, johnsonm@redhat.com *
+* *
+* This file is placed under the conditions of the GNU Library *
+* General Public License, version 2, or any later version. *
+* See file COPYING for information on distribution conditions. *
+\***********************************************************************/
+#include <stdlib.h>
+#include <stdio.h>
+
+void *xcalloc(void *pointer, int size) {
+ void * ret;
+ if (pointer)
+ free(pointer);
+ if (!(ret = calloc(1, size))) {
+ fprintf(stderr, "xcalloc: allocation error, size = %d\n", size);
+ exit(1);
+ } else {
+ return ret;
+ }
+}
+
+void *xmalloc(unsigned int size) {
+ void *p;
+
+ if (size == 0)
+ ++size;
+ p = malloc(size);
+ if (!p) {
+ fprintf(stderr, "xmalloc: malloc(%d) failed", size);
+ perror(NULL);
+ exit(1);
+ }
+ return(p);
+}
+
+void *xrealloc(void *oldp, unsigned int size) {
+ void *p;
+
+ if (size == 0)
+ ++size;
+ p = realloc(oldp, size);
+ if (!p) {
+ fprintf(stderr, "xrealloc: realloc(%d) failed", size);
+ perror(NULL);
+ exit(1);
+ }
+ return(p);
+}
--- /dev/null
+/*
+ *
+ * Copyright 1994 Charles Blake and Michael K. Johnson
+ * This file is a part of procps, which is distributable
+ * under the conditions of the GNU Library General Public License.
+ * See the file COPYING for details.
+ *
+ */
+
+#include <string.h> /* for strcmp */
+#include <stdio.h> /* for parse error output */
+
+#include "proc/readproc.h" /* for proc_t */
+#include "proc/tree.h" /* for struct tree_node */
+
+#include "proc/compare.h" /* for this code */
+
+
+/*
+ This module was written by Charles Blake for procps.
+
+mult_lvl_cmp:
+ slick general purpose multi-level compare function I invented.
+sort_depth:
+ the number of levels of functions *to use*. This means many more levels
+ can be defined than mult_lvl_cmp tres out. If this is 1 then mult_lvl_cmp
+ is just a trivial wrapper around (*sort_function[0]).
+sort_direction:
+ multiplicative factor for the output of cmp_whatever.
+ 1 ==> default order, -1 ==> reverse order, 0 ==> forced equality
+ The 0 bit is the neat part. Since a value of zero is the code for equality
+ multiplying the output of cmp_foo(a,b) forces a==b to be true. This is a
+ convenient way to turn sorting off in middle levels of a multi-level sort.
+ If time is a problem, reforming the whole sort_function array to not include
+ these unsorted middle levels will be faster since then cmp_foo won't even
+ be called. It might simplify some code depending upon how you organize it.
+sort_function[]:
+ array of function pointers that points to our family of comparison functions
+ (I have named them cmp_* but mult_lvl_cmp doesn't care what they're named).
+ This may be declared and initialized like so:
+ int (*sort_function[])(void* a, void* b)={&cmp_foo, &cmp_bar, &cmp_hiho};
+ You could also use my command line '-O' parser below.
+
+Note that we only descend levels until the order is determined. If we descend
+all levels, that means that the items are equal at all levels, so we return 0.
+Otherwise we return whatever the level's cmp_foo function would have returned.
+This allows whatever default behavior you want for cmp_foo. sort_direction[]
+reverses this default behavior, but mult_lvl_cmp doesn't decide that ascending
+or descending is the default. That is the job of your cmp_foo's.
+*/
+
+/* the only reason these are global is because qsort(3) likes it that way.
+ It's also a little more efficient if mult_lvl_cmp() is called many times.
+*/
+
+static int sort_depth = 0;
+static int sort_direction[10]; /* storage for 10 levels, but 4 would be plenty!*/
+static int (*sort_function[10])(void* a, void* b);
+
+int mult_lvl_cmp(void* a, void* b) {
+ int i, cmp_val;
+ for(i = 0; i < sort_depth; i++) {
+ cmp_val = sort_direction[i] * (*sort_function[i])(a,b);
+ if (cmp_val != 0)
+ return cmp_val;
+ }
+ return 0;
+}
+
+int node_mult_lvl_cmp(void* a, void* b) {
+ int i, cmp_val;
+ for(i = 0; i < sort_depth; i++) {
+ cmp_val = sort_direction[i] * (*sort_function[i])(&(((struct tree_node *)a)->proc),&(((struct tree_node *)b)->proc));
+ if (cmp_val != 0)
+ return cmp_val;
+ }
+ return 0;
+}
+
+/* qsort(3) compliant comparison functions for all members of the ps_proc
+ structure (in the same order in which they appear in the proc_t declaration)
+ return is {-1,0,1} as {a<b, a==b, a>b}
+ default ordering is ascending for all members. (flip 1,-1 to reverse)
+*/
+/* pre-processor macros to cut down on source size (and typing!)
+ Note the use of the string concatenation operator ##
+*/
+#define CMP_STR(NAME) \
+static int cmp_ ## NAME(proc_t** P, proc_t** Q) { \
+ return strcmp((*P)->NAME, (*Q)->NAME); \
+}
+
+#define CMP_INT(NAME) \
+static int cmp_ ## NAME (proc_t** P, proc_t** Q) { \
+ if ((*P)->NAME < (*Q)->NAME) return -1; \
+ if ((*P)->NAME > (*Q)->NAME) return 1; \
+ return 0; \
+}
+
+/* Define the (46!) cmp_ functions with the above macros for every element
+ of proc_t. If the binary gets too big, we could nuke inessentials.
+*/
+
+/* CMP_STR(cmdline) */
+CMP_STR(ruser)
+CMP_STR(euser)
+CMP_STR(cmd)
+/* CMP_INT(state) */
+/* CMP_STR(ttyc) */
+CMP_INT(euid)
+CMP_INT(pid)
+CMP_INT(ppid)
+CMP_INT(pgrp)
+CMP_INT(session)
+CMP_INT(tty)
+CMP_INT(tpgid)
+CMP_INT(utime)
+CMP_INT(stime)
+CMP_INT(cutime)
+CMP_INT(cstime)
+/* CMP_INT(priority) */
+CMP_INT(nice)
+CMP_INT(start_time)
+/* CMP_INT(signal) */
+/* CMP_INT(blocked) */
+/* CMP_INT(sigignore) */
+/* CMP_INT(sigcatch) */
+CMP_INT(flags)
+CMP_INT(min_flt)
+CMP_INT(cmin_flt)
+CMP_INT(maj_flt)
+CMP_INT(cmaj_flt)
+/* CMP_INT(timeout) */
+CMP_INT(vsize)
+CMP_INT(rss)
+/* CMP_INT(rss_rlim) */
+/* CMP_INT(start_code) */
+/* CMP_INT(end_code) */
+/* CMP_INT(start_stack) */
+/* CMP_INT(kstk_esp) */
+/* CMP_INT(kstk_eip) */
+/* CMP_INT(wchan) */
+CMP_INT(pcpu)
+CMP_INT(size)
+CMP_INT(resident)
+CMP_INT(share)
+/* CMP_INT(trs) */
+/* CMP_INT(lrs) */
+/* CMP_INT(drs) */
+/* CMP_INT(dt) */
+
+/* define user interface to sort keys. Fairly self-explanatory. */
+
+static struct cmp_fun_struct {
+ char letter; /* single option-letter for key */
+ char name[15]; /* long option name for key */
+ int (*fun)(proc_t**, proc_t**); /* pointer to cmp_key */
+} cmp[] = {
+/* { '?', "cmdline", &cmp_cmdline }, */
+ { 'u', "user", &cmp_euser },
+/* { '?', "ruser", &cmp_ruser }, */
+ { 'c', "cmd", &cmp_cmd },
+/* { '?', "state", &cmp_state }, */
+/* { '?', "ttyc", &cmp_ttyc }, */
+ { 'U', "uid", &cmp_euid },
+ { 'p', "pid", &cmp_pid },
+ { 'P', "ppid", &cmp_ppid },
+ { 'g', "pgrp", &cmp_pgrp },
+ { 'o', "session", &cmp_session },
+ { 't', "tty", &cmp_tty },
+ { 'G', "tpgid", &cmp_tpgid },
+ { 'k', "utime", &cmp_utime },
+ { 'K', "stime", &cmp_stime },
+ { 'j', "cutime", &cmp_cutime },
+ { 'J', "cstime", &cmp_cstime },
+/* { '?', "counter", &cmp_counter }, */
+ { 'y', "priority", &cmp_nice },
+ { 'T', "start_time", &cmp_start_time },
+/* { '?', "signal", &cmp_signal }, */
+/* { '?', "blocked", &cmp_blocked }, */
+/* { '?', "sigignore", &cmp_sigignore }, */
+/* { '?', "sigcatch", &cmp_sigcatch }, */
+ { 'f', "flags", &cmp_flags },
+ { 'm', "min_flt", &cmp_min_flt },
+ { 'n', "cmin_flt", &cmp_cmin_flt },
+ { 'M', "maj_flt", &cmp_maj_flt },
+ { 'N', "cmaj_flt", &cmp_cmaj_flt },
+/* { 'C', "timeout", &cmp_timeout }, */
+ { 'v', "vsize", &cmp_vsize },
+ { 'r', "rss", &cmp_rss },
+/* { '?', "rss_rlim", &cmp_rss_rlim }, */
+/* { '?', "start_code", &cmp_start_code }, */
+/* { '?', "end_code", &cmp_end_code }, */
+/* { '?', "start_stack", &cmp_start_stack }, */
+/* { '?', "kstk_esp", &cmp_kstk_esp }, */
+/* { '?', "kstk_eip", &cmp_kstk_eip }, */
+/* { '?', "wchan", &cmp_wchan }, */
+ { 'C', "pcpu", &cmp_pcpu },
+ { 's', "size", &cmp_size },
+ { 'R', "resident", &cmp_resident },
+ { 'S', "share", &cmp_share },
+/* { '?', "trs", &cmp_trs }, */
+/* { '?', "lrs", &cmp_lrs }, */
+/* { '?', "drs", &cmp_drs }, */
+/* { '?', "dt", &cmp_dt }, */
+ { '\0',"terminator", NULL }
+};
+
+/* command line option parsing. Assign sort_{depth,direction[],function[]}
+ based upon a string of the form:
+ [+-]a[+-]b[+-]c...
+ with a,b,c,... being letter flags corresponding to a particular sort
+ key and the optional '-' specifying a reverse sort on that key. + doesn't
+ mean anything, but it keeps things looking balanced...
+*/
+const char *parse_sort_opt(const char* opt) {
+ int i, next_dir=1;
+ for(; *opt ; ++opt) {
+ if (*opt == '-' || *opt == '+') {
+ if (*opt == '-')
+ next_dir = -1;
+ opt++;
+ continue;
+ }
+ for (i = 0; cmp[i].letter; i++)
+ if (*opt == cmp[i].letter)
+ break;
+ if (!cmp[i].letter) { /* failed, clear and return */
+ sort_depth=0;
+ for (i=0;i<10;i++){
+ sort_direction[i]=0;
+ sort_function[i]=(cmp_t)NULL;
+ }
+ return "Unknown sort key.";
+ } else {
+#ifdef DEBUG
+ fprintf(stderr,
+ "sort level %d: key %s, direction % d\n",
+ sort_depth, cmp[i].name, next_dir);
+#endif
+ sort_function[sort_depth] = (cmp_t)cmp[i].fun;
+ sort_direction[sort_depth++] = next_dir;
+ next_dir = 1;
+ }
+ }
+ return NULL;
+}
+
+const char *parse_long_sort(const char* opt) {
+ char* comma;
+ int i, more_keys, next_dir=1;
+ do {
+ if (*opt == '-' || *opt == '+') {
+ if (*opt == '-')
+ next_dir = -1;
+ more_keys = 1;
+ opt++;
+ continue;
+ }
+ more_keys = ((comma=index(opt,',')) != NULL);
+ /* keys are ',' delimited */
+ if (more_keys)
+ *comma='\0'; /* terminate for strcmp() */
+ for(i = 0; cmp[i].letter; ++i)
+ if (strcmp(opt, cmp[i].name) == 0)
+ break;
+ if (!cmp[i].letter) { /* failed, clear and return */
+ sort_depth=0;
+ for (i=0;i<10;i++){
+ sort_direction[i]=0;
+ sort_function[i]=(cmp_t)NULL;
+ }
+ return "Unknown sort key.";
+ } else {
+#ifdef DEBUG
+ fprintf(stderr,
+ "sort level %d: key %s, direction % d\n",
+ sort_depth, cmp[i].name, next_dir);
+#endif
+ sort_function[sort_depth] = (cmp_t)cmp[i].fun;
+ sort_direction[sort_depth++] = next_dir;
+ next_dir = 1;
+ }
+ opt = comma + 1; /* do next loop on next key, if more keys, else done*/
+ } while (more_keys);
+ return NULL;
+}
+
+void reset_sort_options (void)
+{
+ int i;
+
+ sort_depth=0;
+ for (i=0;i<10;i++){
+ sort_direction[i]=0;
+ sort_function[i]=(cmp_t)NULL;
+ }
+}
+
+void register_sort_function (int dir, cmp_t func)
+{
+ sort_function[sort_depth] = func;
+ sort_direction[sort_depth++] = dir;
+}
--- /dev/null
+typedef int (*cmp_t)(void*,void*); /* for function pointer casts */
+
+extern void register_sort_function (int dir, cmp_t func);
+extern void reset_sort_options(void);
+extern int mult_lvl_cmp(void* a, void* b);
+extern int node_mult_lvl_cmp(void* a, void* b);
+extern const char *parse_sort_opt(const char* opt);
+extern const char *parse_long_sort(const char* opt);
+
--- /dev/null
+/*
+ * Copyright 1998 by Albert Cahalan; all rights resered.
+ * This file may be used subject to the terms and conditions of the
+ * GNU Library General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/sysmacros.h>
+#include "devname.h"
+
+#include <asm/page.h>
+#ifndef PAGE_SIZE
+#define PAGE_SIZE (sizeof(long)*1024)
+#endif
+
+/* Who uses what:
+ *
+ * tty_to_dev oldps, w (there is a fancy version in ps)
+ * dev_to_tty oldps, top, ps
+ */
+
+typedef struct tty_map_node {
+ struct tty_map_node *next;
+ int major_number; /* not unsigned! Ugh... */
+ char name[4];
+} tty_map_node;
+
+static tty_map_node *tty_map = NULL;
+
+/* Load /proc/tty/drivers for device name mapping use. */
+static void load_drivers(void){
+ char buf[10000];
+ char *p;
+ int fd;
+ int bytes;
+ fd = open("/proc/tty/drivers",O_RDONLY);
+ if(fd == -1) goto fail;
+ bytes = read(fd, buf, 9999);
+ if(bytes == -1) goto fail;
+ buf[bytes] = '\0';
+ p = buf;
+ while(( p = strstr(p, " /dev/tty") )){
+ tty_map_node *tmn;
+ int len;
+ p += 9;
+ len = strspn(p, "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
+ if(!len) continue;
+ if(len>3) continue;
+ if((len=1) && (*p=='S')) continue;
+ tmn = malloc(sizeof(tty_map_node));
+ tmn->next = tty_map;
+ tty_map = tmn;
+ memset(tmn->name, '\0', 4);
+ strncpy(tmn->name, p, len);
+ p += len;
+ tmn->major_number = atoi(p);
+ }
+fail:
+ if(fd != -1) close(fd);
+ if(!tty_map) tty_map = (tty_map_node *)-1;
+}
+
+/* Try to guess the device name from /proc/tty/drivers info. */
+static int driver_name(char * const buf, int maj, int min){
+ struct stat sbuf;
+ tty_map_node *tmn;
+ if(!tty_map) load_drivers();
+ if(tty_map == (tty_map_node *)-1) return 0;
+ tmn = tty_map;
+ for(;;){
+ if(!tmn) return 0;
+ if(tmn->major_number == maj) break;
+ tmn = tmn->next;
+ }
+ sprintf(buf, "/dev/tty%s%d", tmn->name, min); /* like "/dev/ttyZZ255" */
+ if(stat(buf, &sbuf) < 0) return 0;
+ if(min != minor(sbuf.st_rdev)) return 0;
+ if(maj != major(sbuf.st_rdev)) return 0;
+ return 1;
+}
+
+/* Try to guess the device name (useful until /proc/PID/tty is added) */
+static int guess_name(char * const buf, int maj, int min){
+ struct stat sbuf;
+ int t0, t1;
+ int tmpmin = min;
+ switch(maj){
+ case 4:
+ if(min<64){
+ sprintf(buf, "/dev/tty%d", min);
+ break;
+ }
+ if(min<128){ /* to 255 on newer systems */
+ sprintf(buf, "/dev/ttyS%d", min-64);
+ break;
+ }
+ tmpmin = min & 0x3f; /* FALL THROUGH */
+ case 3: /* /dev/[pt]ty[p-za-o][0-9a-z] is 936 */
+ t0 = "pqrstuvwxyzabcde"[tmpmin>>4];
+ t1 = "0123456789abcdef"[tmpmin&0x0f];
+ sprintf(buf, "/dev/tty%c%c", t0, t1);
+ break;
+ case 17: sprintf(buf, "/dev/ttyH%d", min); break;
+ case 19: sprintf(buf, "/dev/ttyC%d", min); break;
+ case 22: sprintf(buf, "/dev/ttyD%d", min); break; /* devices.txt */
+ case 23: sprintf(buf, "/dev/ttyD%d", min); break; /* driver code */
+ case 24: sprintf(buf, "/dev/ttyE%d", min); break;
+ case 32: sprintf(buf, "/dev/ttyX%d", min); break;
+ case 43: sprintf(buf, "/dev/ttyI%d", min); break;
+ case 46: sprintf(buf, "/dev/ttyR%d", min); break;
+ case 48: sprintf(buf, "/dev/ttyL%d", min); break;
+ case 57: sprintf(buf, "/dev/ttyP%d", min); break;
+ case 71: sprintf(buf, "/dev/ttyF%d", min); break;
+ case 75: sprintf(buf, "/dev/ttyW%d", min); break;
+ case 78: sprintf(buf, "/dev/ttyM%d", min); break; /* conflict */
+ case 105: sprintf(buf, "/dev/ttyV%d", min); break;
+ case 112: sprintf(buf, "/dev/ttyM%d", min); break; /* conflict */
+ /* 136 ... 143 are /dev/pts/0, /dev/pts/1, /dev/pts/2 ... */
+ case 136 ... 143: sprintf(buf, "/dev/pts/%d", min+(maj-136)*256); break;
+ case 148: sprintf(buf, "/dev/ttyT%d", min); break;
+ case 154: sprintf(buf, "/dev/ttySR%d", min); break;
+ case 156: sprintf(buf, "/dev/ttySR%d", min+256); break;
+ case 164: sprintf(buf, "/dev/ttyCH%d", min); break;
+ case 166: sprintf(buf, "/dev/ttyACM%d", min); break; /* bummer, 9-char */
+ case 172: sprintf(buf, "/dev/ttyMX%d", min); break;
+ case 174: sprintf(buf, "/dev/ttySI%d", min); break;
+ case 188: sprintf(buf, "/dev/ttyUSB%d", min); break; /* bummer, 9-char */
+ default: return 0;
+ }
+ if(stat(buf, &sbuf) < 0) return 0;
+ if(min != minor(sbuf.st_rdev)) return 0;
+ if(maj != major(sbuf.st_rdev)) return 0;
+ return 1;
+}
+
+/* Linux 2.2 can give us filenames that might be correct.
+ * Useful names could be in /proc/PID/fd/2 (stderr, seldom redirected)
+ * and in /proc/PID/fd/255 (used by bash to remember the tty).
+ */
+static int link_name(char * const buf, int maj, int min, int pid, char *name){
+ struct stat sbuf;
+ char path[32];
+ int count;
+ sprintf(path, "/proc/%d/%s", pid, name); /* often permission denied */
+ count = readlink(path,buf,PAGE_SIZE-1);
+ if(count == -1) return 0;
+ buf[count] = '\0';
+ if(stat(buf, &sbuf) < 0) return 0;
+ if(min != minor(sbuf.st_rdev)) return 0;
+ if(maj != major(sbuf.st_rdev)) return 0;
+ return 1;
+}
+
+/* number --> name */
+int dev_to_tty(char *ret, int chop, int dev, int pid, unsigned int flags) {
+ static char buf[PAGE_SIZE];
+ char *tmp = buf;
+ int i = 0;
+ int c;
+ if((short)dev == (short)-1) goto fail;
+ if( link_name(tmp, major(dev), minor(dev), pid, "tty" )) goto abbrev;
+ if( link_name(tmp, major(dev), minor(dev), pid, "fd/2" )) goto abbrev;
+ if( guess_name(tmp, major(dev), minor(dev) )) goto abbrev;
+ if( link_name(tmp, major(dev), minor(dev), pid, "fd/255")) goto abbrev;
+ if(driver_name(tmp, major(dev), minor(dev) )) goto abbrev;
+fail:
+ strcpy(ret, "?");
+ return 1;
+abbrev:
+ if((flags&ABBREV_DEV) && !strncmp(tmp,"/dev/",5) && tmp[5]) tmp += 5;
+ if((flags&ABBREV_TTY) && !strncmp(tmp,"tty", 3) && tmp[3]) tmp += 3;
+ if((flags&ABBREV_PTS) && !strncmp(tmp,"pts/", 4) && tmp[4]) tmp += 4;
+ tmp[chop] = '\0';
+ for(;;){
+ c = *tmp;
+ tmp++;
+ if(!c) break;
+ i++;
+ if(c<=' ') c = '?';
+ if(c>126) c = '?';
+ *ret = c;
+ ret++;
+ }
+ *ret = '\0';
+ return i;
+}
+
+/* name --> number */
+int tty_to_dev(char *name) {
+ struct stat sbuf;
+ static char buf[32];
+ if(stat(name, &sbuf) >= 0) return sbuf.st_rdev;
+ snprintf(buf,32,"/dev/%s",name);
+ if(stat(buf, &sbuf) >= 0) return sbuf.st_rdev;
+ snprintf(buf,32,"/dev/tty%s",name);
+ if(stat(buf, &sbuf) >= 0) return sbuf.st_rdev;
+ snprintf(buf,32,"/dev/pts/%s",name);
+ if(stat(buf, &sbuf) >= 0) return sbuf.st_rdev;
+ return -1;
+}
--- /dev/null
+#define ABBREV_DEV 1 /* remove /dev/ */
+#define ABBREV_TTY 2 /* remove tty */
+#define ABBREV_PTS 4 /* remove pts/ */
+
+int dev_to_tty(char *ret, int chop, int dev, int pid, unsigned int flags);
+
+int tty_to_dev(char *name);
--- /dev/null
+/*
+ * Copyright 1998 by Albert Cahalan; all rights reserved.
+ * This file may be used subject to the terms and conditions of the
+ * GNU Library General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <stdarg.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <sys/utsname.h>
+#include "proc/procps.h"
+#include "proc/version.h"
+#include "proc/sysinfo.h" /* smp_num_cpus */
+
+#define KSYMS_FILENAME "/proc/ksyms"
+
+#if 0
+#undef KSYMS_FILENAME
+#define KSYMS_FILENAME "/would/be/nice/to/have/this/file"
+#define SYSMAP_FILENAME "/home/albert/ps/45621/System.map-hacked"
+#define linux_version_code 131598 /* ? */
+#define smp_num_cpus 2
+#endif
+
+#if 0
+#undef KSYMS_FILENAME
+#define KSYMS_FILENAME "/home/albert/ps/45621/ksyms-2.3.12"
+#define SYSMAP_FILENAME "/home/albert/ps/45621/System.map-2.3.12"
+#define linux_version_code 131852 /* 2.3.12 */
+#define smp_num_cpus 2
+#endif
+
+#if 0
+#undef KSYMS_FILENAME
+#define KSYMS_FILENAME "/home/albert/ps/45621/ksyms-2.3.18ac8-MODVERS"
+#define SYSMAP_FILENAME "/home/albert/ps/45621/System.map-2.3.18ac8-MODVERS"
+#define linux_version_code 131858 /* 2.3.18ac8 */
+#define smp_num_cpus 2
+#endif
+
+#if 0
+#undef KSYMS_FILENAME
+#define KSYMS_FILENAME "/home/albert/ps/45621/ksyms-2.3.18ac8-NOMODVERS"
+#define SYSMAP_FILENAME "/home/albert/ps/45621/System.map-2.3.18ac8-NOMODVERS"
+#define linux_version_code 131858 /* 2.3.18ac8 */
+#define smp_num_cpus 2
+#endif
+
+/* These are the symbol types, with relative popularity:
+ * ? w machine type junk for Alpha -- odd syntax
+ * ? S not for i386
+ * 4 W not for i386
+ * 60 R
+ * 100 A
+ * 125 r
+ * 363 s not for i386
+ * 858 B
+ * 905 g generated by modutils?
+ * 929 G generated by modutils?
+ * 1301 b
+ * 2750 D
+ * 4481 d
+ * 11417 ?
+ * 13666 t
+ * 15442 T
+ *
+ * For i386, that is: "RArBbDd?tT"
+ */
+
+#define SYMBOL_TYPE_CHARS "Tt?dDbBrARGgsWS"
+
+/*
+ * '?' is a symbol type
+ * '.' is part of a name (versioning?)
+ * "\t[]" are for the module name in /proc/ksyms
+ */
+#define LEGAL_SYSMAP_CHARS "0123456789_ ?.\n\t[]" \
+ "abcdefghijklmnopqrstuvwxyz" \
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+
+/* System.map lines look like:
+ * hex num, space, one of SYMBOL_TYPE_CHARS, space, LEGAL_SYSMAP_CHARS, \n
+ *
+ * Alpha systems can start with a few lines that have the address replaced
+ * by space padding and a 'w' for the type. For those lines, the last space
+ * is followed by something like: mikasa_primo_mv p2k_mv sable_gamma_mv
+ * (just one of those, always with a "_mv", then the newline)
+ *
+ * The /proc/ksyms lines are like System.map lines w/o the symbol type char.
+ * When odd features are used, the name part contains:
+ * "(.*)_R(smp_|smp2gig_|2gig_)?[0-9a-fA-F]{8,}"
+ * It is likely that more crap will be added...
+ */
+
+typedef struct symb {
+ const char *name;
+ unsigned long addr;
+} symb;
+
+static const symb fail = { "?", 0 };
+static const char *dash = "-";
+
+/* These mostly rely on POSIX to make them zero. */
+
+static const symb hashtable[256];
+
+static char *sysmap_data;
+static unsigned sysmap_room;
+static symb *sysmap_index;
+static unsigned sysmap_count;
+
+static char *ksyms_data;
+static unsigned ksyms_room = 4096;
+static symb *ksyms_index;
+static unsigned ksyms_count;
+static int idx_room;
+
+/*********************************/
+
+/* Kill this: _R(smp_?|smp2gig_?|2gig_?)?[0-9a-f]{8,}$
+ * We kill: (_R[^A-Z]*[0-9a-f]{8,})+$
+ *
+ * The loop should almost never be taken, but it has to be there.
+ * It gets rid of anything that _looks_ like a version code, even
+ * if a real version code has already been found. This is because
+ * the inability to perfectly recognize a version code may lead to
+ * symbol mangling, which in turn leads to mismatches between the
+ * /proc/ksyms and System.map data files.
+ */
+#if 0
+static void chop_version(char *arg){
+ char *cp;
+ cp = strchr(arg,'\t');
+ if(cp) *cp = '\0'; /* kill trailing module name first */
+ for(;;){
+ char *p;
+ int len = 0;
+ cp = strrchr(arg, 'R');
+ if(!cp || cp<=arg+1 || cp[-1]!='_') break;
+ for(p=cp; *++p; ){
+ switch(*p){
+ default:
+ return;
+ case '0' ... '9':
+ case 'a' ... 'f':
+ len++;
+ continue;
+ case 'g' ... 'z':
+ case '_':
+ len=0;
+ continue;
+ }
+ }
+ if(len<8) break;
+ cp[-1] = '\0';
+ }
+}
+#endif
+static void chop_version(char *arg){
+ char *cp;
+ cp = strchr(arg,'\t');
+ if(cp) *cp = '\0'; /* kill trailing module name first */
+ for(;;){
+ int len;
+ cp = strrchr(arg, 'R');
+ if(!cp || cp<=arg+1 || cp[-1]!='_') break;
+ len=strlen(cp);
+ if(len<9) break;
+ if(strpbrk(cp+1,"ABCDEFGHIJKLMNOPQRSTUVWXYZ")) break;
+ if(strspn(cp+len-8,"0123456789abcdef")!=8) break;
+ cp[-1] = '\0';
+ }
+}
+
+/***********************************/
+
+static const symb *search(unsigned long address, symb *idx, unsigned count){
+ unsigned left;
+ unsigned mid;
+ unsigned right;
+ if(!idx) return NULL; /* maybe not allocated */
+ if(address < idx[0].addr) return NULL;
+ if(address >= idx[count-1].addr) return idx+count-1;
+ left = 0;
+ right = count-1;
+ for(;;){
+ mid = (left + right) / 2;
+ if(address >= idx[mid].addr) left = mid;
+ if(address <= idx[mid].addr) right = mid;
+ if(right-left <= 1) break;
+ }
+ if(address == idx[right].addr) return idx+right;
+ return idx+left;
+}
+
+/*********************************/
+
+/* allocate if needed, read, and return buffer size */
+static void read_file(const char *filename, char **bufp, unsigned *roomp) {
+ int fd = 0;
+ ssize_t done;
+ char *buf;
+ ssize_t total = 0;
+ unsigned room = *roomp;
+ buf = *bufp;
+ if(!room) goto hell; /* failed before */
+ if(!buf) buf = malloc(room);
+ if(!buf) goto hell;
+open_again:
+ fd = open(filename, O_RDONLY|O_NOCTTY|O_NONBLOCK);
+ if(fd<0){
+ switch(errno){
+ case EINTR: goto open_again;
+ default: _exit(101);
+ case EACCES: /* somebody screwing around? */
+ /* FIXME: set a flag to disable symbol lookup? */
+ case ENOENT: /* no module support */
+ }
+ goto hell;
+ }
+ for(;;){
+ done = read(fd, buf+total, room-total-1);
+ if(done==0) break; /* nothing left */
+ if(done==-1){
+ if(errno==EINTR) continue; /* try again */
+ perror("");
+ goto hell;
+ }
+ if(done==(ssize_t)room-total-1){
+ char *tmp;
+ total += done;
+ /* more to go, but no room in buffer */
+ room *= 2;
+ tmp = realloc(buf, room);
+ if(!tmp) goto hell;
+ buf = tmp;
+ continue;
+ }
+ if(done>0 && done<(ssize_t)room-total-1){
+ total += done;
+ continue; /* OK, we read some. Go do more. */
+ }
+ fprintf(stderr,"%ld can't happen\n", (long)done);
+ /* FIXME: memory leak */
+ _exit(42);
+ }
+ *bufp = buf;
+ *roomp = room;
+ close(fd);
+ return;
+hell:
+ if(buf) free(buf);
+ *bufp = NULL;
+ *roomp = 0; /* this function will never work again */
+ total = 0;
+ close(fd);
+ return;
+}
+
+/*********************************/
+
+static int parse_ksyms(void) {
+ char *endp;
+ if(!ksyms_room || !ksyms_data) goto quiet_goodbye;
+ endp = ksyms_data;
+ ksyms_count = 0;
+ if(idx_room) goto bypass; /* some space already allocated */
+ idx_room = 512;
+ for(;;){
+ void *vp;
+ idx_room *= 2;
+ vp = realloc(ksyms_index, sizeof(symb)*idx_room);
+ if(!vp) goto bad_alloc;
+ ksyms_index = vp;
+bypass:
+ for(;;){
+ char *saved;
+ if(!*endp) return 1;
+ saved = endp;
+ ksyms_index[ksyms_count].addr = strtoul(endp, &endp, 16);
+ if(endp==saved || *endp != ' ') goto bad_parse;
+ endp++;
+ ksyms_index[ksyms_count].name = endp;
+ saved = endp;
+ endp = strchr(endp,'\n');
+ if(!endp) goto bad_parse; /* no newline */
+ *endp = '\0';
+ chop_version(saved);
+ ++endp;
+ if(++ksyms_count >= idx_room) break; /* need more space */
+ }
+ }
+
+ if(0){
+bad_alloc:
+ fprintf(stderr, "Warning: not enough memory available\n");
+ }
+ if(0){
+bad_parse:
+ fprintf(stderr, "Warning: "KSYMS_FILENAME" not normal\n");
+ }
+quiet_goodbye:
+ idx_room = 0;
+ if(ksyms_data) free(ksyms_data) , ksyms_data = NULL;
+ ksyms_room = 0;
+ if(ksyms_index) free(ksyms_index) , ksyms_index = NULL;
+ ksyms_count = 0;
+ return 0;
+}
+
+/*********************************/
+
+#define VCNT 16
+
+static int sysmap_mmap(const char *filename, void (*message)(const char *, ...)) {
+ struct stat sbuf;
+ char *endp;
+ int fd;
+ char Version[32];
+ fd = open(filename, O_RDONLY|O_NOCTTY|O_NONBLOCK);
+ if(fd<0) return 0;
+ if(fstat(fd, &sbuf) < 0) goto bad_open;
+ if(!S_ISREG(sbuf.st_mode)) goto bad_open;
+ if(sbuf.st_size < 5000) goto bad_open; /* if way too small */
+ /* Would be shared read-only, but we want '\0' after each name. */
+ endp = mmap(0, sbuf.st_size + 1, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0);
+ sysmap_data = endp;
+ while(*endp==' '){ /* damn Alpha machine types */
+ if(strncmp(endp," w ", 19)) goto bad_parse;
+ endp += 19;
+ endp = strchr(endp,'\n');
+ if(!endp) goto bad_parse; /* no newline */
+ if(strncmp(endp-3, "_mv\n", 4)) goto bad_parse;
+ endp++;
+ }
+ if(sysmap_data == (caddr_t) -1) goto bad_open;
+ close(fd);
+ fd = -1;
+ sprintf(Version, "Version_%d", linux_version_code);
+ sysmap_room = 512;
+ for(;;){
+ void *vp;
+ sysmap_room *= 2;
+ vp = realloc(sysmap_index, sizeof(symb)*sysmap_room);
+ if(!vp) goto bad_alloc;
+ sysmap_index = vp;
+ for(;;){
+ char *vstart;
+ if(!*endp){ /* if we reached the end */
+ int i = VCNT; /* check VCNT times to verify this file */
+ if(*Version) goto bad_version;
+ if(!ksyms_index) return 1; /* if can not verify, assume success */
+ while(i--){
+#if 1
+ const symb *findme;
+ const symb *map_symb;
+ /* Choose VCNT entries from /proc/ksyms to test */
+ findme = ksyms_index + (ksyms_count*i/VCNT);
+ /* Search for them in the System.map */
+ map_symb = search(findme->addr, sysmap_index, sysmap_count);
+ if(map_symb){
+ if(map_symb->addr != findme->addr) continue;
+ /* backup to first matching address */
+ while (map_symb != sysmap_index){
+ if (map_symb->addr != (map_symb-1)->addr) break;
+ map_symb--;
+ }
+ /* search for name in symbols with same address */
+ while (map_symb != (sysmap_index+sysmap_count)){
+ if (map_symb->addr != findme->addr) break;
+ if (!strcmp(map_symb->name,findme->name)) goto good_match;
+ map_symb++;
+ }
+ map_symb--; /* backup to last symbol with matching address */
+ message("{%s} {%s}\n",map_symb->name,findme->name);
+ goto bad_match;
+ }
+good_match:;
+#endif
+ }
+ return 1; /* success */
+ }
+ sysmap_index[sysmap_count].addr = strtoul(endp, &endp, 16);
+ if(*endp != ' ') goto bad_parse;
+ endp++;
+ if(!strchr(SYMBOL_TYPE_CHARS, *endp)) goto bad_parse;
+ endp++;
+ if(*endp != ' ') goto bad_parse;
+ endp++;
+ sysmap_index[sysmap_count].name = endp;
+ vstart = endp;
+ endp = strchr(endp,'\n');
+ if(!endp) goto bad_parse; /* no newline */
+ *endp = '\0';
+ ++endp;
+ chop_version(vstart);
+ if(*vstart=='V' && *Version && !strcmp(Version,vstart)) *Version='\0';
+ if(++sysmap_count >= sysmap_room) break; /* need more space */
+ }
+ }
+
+ if(0){
+bad_match:
+ message("Warning: %s does not match kernel data.\n", filename);
+ }
+ if(0){
+bad_version:
+ message("Warning: %s has an incorrect kernel version.\n", filename);
+ }
+ if(0){
+bad_alloc:
+ message("Warning: not enough memory available\n");
+ }
+ if(0){
+bad_parse:
+ message("Warning: %s not parseable as a System.map\n", filename);
+ }
+ if(0){
+bad_open:
+ message("Warning: %s could not be opened as a System.map\n", filename);
+ }
+
+ sysmap_room=0;
+ sysmap_count=0;
+ if(sysmap_index) free(sysmap_index);
+ sysmap_index = NULL;
+ if(fd>=0) close(fd);
+ if(sysmap_data) munmap(sysmap_data, sbuf.st_size + 1);
+ sysmap_data = NULL;
+ return 0;
+}
+
+/*********************************/
+
+static void read_and_parse(void){
+ static time_t stamp; /* after data gets old, load /proc/ksyms again */
+ if(time(NULL) != stamp){
+ read_file(KSYMS_FILENAME, &ksyms_data, &ksyms_room);
+ parse_ksyms();
+ memset((void*)hashtable,0,sizeof(hashtable)); /* invalidate cache */
+ stamp = time(NULL);
+ }
+}
+
+/*********************************/
+
+static void default_message(const char *format, ...) {
+ va_list arg;
+
+ va_start (arg, format);
+ vfprintf (stderr, format, arg);
+ va_end (arg);
+}
+
+/*********************************/
+
+int open_psdb_message(const char *override, void (*message)(const char *, ...)) {
+ static const char *sysmap_paths[] = {
+ "/boot/System.map-%s",
+ "/boot/System.map",
+ "/lib/modules/%s/System.map",
+ "/usr/src/linux/System.map",
+ "/System.map",
+ NULL
+ };
+ struct utsname uts;
+ char path[64];
+ const char **fmt = sysmap_paths;
+ const char *env;
+ read_and_parse();
+#ifdef SYSMAP_FILENAME /* debug feature */
+ override = SYSMAP_FILENAME;
+#endif
+ if(override){ /* ought to search some path */
+ if(sysmap_mmap(override, message)) return 0;
+ return -1; /* ought to return "Namelist not found." */
+ /* failure is better than ignoring the user & using bad data */
+ }
+ /* Arrrgh, the old man page and code did not match. */
+ if ((env = getenv("PS_SYSMAP")) && sysmap_mmap(env, message)) return 0;
+ if ((env = getenv("PS_SYSTEM_MAP")) && sysmap_mmap(env, message)) return 0;
+ uname(&uts);
+ do{
+ snprintf(path, sizeof path, *fmt, uts.release);
+ if (sysmap_mmap(path, message)) return 0;
+ }while(*++fmt);
+ /* TODO: Without System.map, no need to keep ksyms loaded. */
+ return -1;
+}
+
+/***************************************/
+
+int open_psdb(const char *override) {
+ return open_psdb_message(override, default_message);
+}
+
+/***************************************/
+
+#define MAX_OFFSET (0x1000*sizeof(long)) /* past this is generally junk */
+
+/* return pointer to temporary static buffer with function name */
+const char * wchan(unsigned long address) {
+ const symb *mod_symb;
+ const symb *map_symb;
+ const symb *good_symb;
+ const char *ret;
+ unsigned hash = (address >> 4) & 0xff; /* got 56/63 hits & 7/63 misses */
+ if(!address) return dash;
+ read_and_parse();
+
+ if(hashtable[hash].addr == address) return hashtable[hash].name;
+ mod_symb = search(address, ksyms_index, ksyms_count);
+ if(!mod_symb) mod_symb = &fail;
+ map_symb = search(address, sysmap_index, sysmap_count);
+ if(!map_symb) map_symb = &fail;
+
+ /* which result is closest? */
+ good_symb = (mod_symb->addr > map_symb->addr)
+ ? mod_symb
+ : map_symb
+ ;
+ if(address > good_symb->addr + MAX_OFFSET) good_symb = &fail;
+
+ /* good_symb->name has the data, but needs to be trimmed */
+ ret = good_symb->name;
+ switch(*ret){
+ case 's': if(!strncmp(ret, "sys_", 4)) ret += 4; break;
+ case 'd': if(!strncmp(ret, "do_", 3)) ret += 3; break;
+ case '_': while(*ret=='_') ret++; break;
+ }
+ /* if(!*ret) ret = fail.name; */ /* not likely (name was "sys_", etc.) */
+
+ /* cache name after abbreviation */
+ hashtable[hash].addr = address;
+ hashtable[hash].name = ret;
+
+ return ret;
+}
--- /dev/null
+/*
+ Some output conversion routines for libproc
+ Copyright (C) 1996, Charles Blake. See COPYING for details.
+*/
+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+
+/* output a string, converting unprintables to octal as we go, and stopping after
+ processing max chars of output (accounting for expansion due to octal rep).
+*/
+unsigned print_str(FILE* file, char *s, unsigned max) {
+ int i;
+ for (i=0; s[i] && i < max; i++)
+ if (isprint(s[i]) || s[i] == ' ')
+ fputc(s[i], file);
+ else {
+ if (max - i > 3) {
+ fprintf(file, "\\%03o", s[i]);
+ i += 3; /* 4 printed, but i counts one */
+ } else
+ return max - i;
+ }
+ return max - i;
+}
+
+/* output an argv style NULL-terminated string list, converting unprintables
+ to octal as we go, separating items of the list by 'sep' and stopping after
+ processing max chars of output (accounting for expansion due to octal rep).
+*/
+unsigned print_strlist(FILE* file, char **strs, char* sep, unsigned max) {
+ int i, n, seplen = strlen(sep);
+ for (n=0; *strs && n < max; strs++) {
+ for (i=0; strs[0][i] && n+i < max; i++)
+ if (isprint(strs[0][i]) || strs[0][i] == ' ')
+ fputc(strs[0][i], file);
+ else {
+ if (max-(n+i) > 3) {
+ fprintf(file, "\\%03o", strs[0][i]);
+ n += 3; /* 4 printed, but i counts one */
+ } else
+ return max - n;
+ }
+ n += i;
+ if (n + seplen < max) {
+ fputs(sep, file);
+ n += seplen;
+ } else
+ return max - n;
+ }
+ return max - n;
+}
--- /dev/null
+/* The shadow of the original with only common prototypes now. */
+#include <stdio.h>
+#include <sys/types.h>
+
+/* The HZ constant from <asm/param.h> is replaced by the Hertz variable
+ * available from "proc/sysinfo.h".
+ */
+
+/* get page info */
+#include <asm/page.h>
+
+void *xrealloc(void *oldp, unsigned int size);
+void *xmalloc(unsigned int size);
+void *xcalloc(void *pointer, int size);
+
+int mult_lvl_cmp(void* a, void* b);
+int node_mult_lvl_cmp(void* a, void* b);
+
+char *user_from_uid(uid_t uid);
+char *group_from_gid(gid_t gid);
+
+const char * wchan(unsigned long address);
+int open_psdb(const char *override);
+int open_psdb_message(const char *override, void (*message)(const char *, ...));
+
+unsigned print_str (FILE* file, char *s, unsigned max);
+unsigned print_strlist(FILE* file, char **strs, char* sep, unsigned max);
--- /dev/null
+/***********************************************************************\
+* Copyright (C) 1992-1998 by Michael K. Johnson, johnsonm@redhat.com *
+* *
+* This file is placed under the conditions of the GNU Library *
+* General Public License, version 2, or any later version. *
+* See file ../COPYING for information on distribution conditions. *
+\***********************************************************************/
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <stdlib.h>
+#include <pwd.h>
+#include "proc/procps.h"
+#include <grp.h>
+
+#define HASHSIZE 16 /* power of 2 */
+#define HASH(x) ((x) & (HASHSIZE - 1))
+
+#define NAMESIZE 16
+#define NAMELENGTH "15"
+
+static struct pwbuf {
+ uid_t uid;
+ char name[NAMESIZE];
+ struct pwbuf *next;
+} *pwhash[HASHSIZE];
+
+char *user_from_uid(uid_t uid)
+{
+ struct pwbuf **p;
+ struct passwd *pw;
+
+ p = &pwhash[HASH(uid)];
+ while (*p) {
+ if ((*p)->uid == uid)
+ return((*p)->name);
+ p = &(*p)->next;
+ }
+ *p = (struct pwbuf *) xmalloc(sizeof(struct pwbuf));
+ (*p)->uid = uid;
+ if ((pw = getpwuid(uid)) == NULL)
+ sprintf((*p)->name, "#%d", uid);
+ else
+ sprintf((*p)->name, "%-." NAMELENGTH "s", pw->pw_name);
+ (*p)->next = NULL;
+ return((*p)->name);
+}
+
+static struct grpbuf {
+ gid_t gid;
+ char name[NAMESIZE];
+ struct grpbuf *next;
+} *grphash[HASHSIZE];
+
+char *group_from_gid(gid_t gid)
+{
+ struct grpbuf **g;
+ struct group *gr;
+
+ g = &grphash[HASH(gid)];
+ while (*g) {
+ if ((*g)->gid == gid)
+ return((*g)->name);
+ g = &(*g)->next;
+ }
+ *g = (struct grpbuf *) malloc(sizeof(struct grpbuf));
+ (*g)->gid = gid;
+ if ((gr = getgrgid(gid)) == NULL)
+ sprintf((*g)->name, "#%d", gid);
+ else
+ sprintf((*g)->name, "%-." NAMELENGTH "s", gr->gr_name);
+ (*g)->next = NULL;
+ return((*g)->name);
+}
--- /dev/null
+/*
+ * New Interface to Process Table -- PROCTAB Stream (a la Directory streams)
+ * Copyright (C) 1996 Charles L. Blake.
+ * Copyright (C) 1998 Michael K. Johnson
+ * May be distributed under the conditions of the
+ * GNU Library General Public License; a copy is in COPYING
+ */
+#include "proc/version.h"
+#include "proc/readproc.h"
+#include "proc/devname.h"
+#include "proc/procps.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <unistd.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <sys/dir.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#define Do(x) (flags & PROC_ ## x) /* convenient shorthand */
+
+/* initiate a process table scan
+ */
+PROCTAB* openproc(int flags, ...) {
+ va_list ap;
+ PROCTAB* PT = xmalloc(sizeof(PROCTAB));
+
+ if (Do(PID))
+ PT->procfs = NULL;
+ else if (!(PT->procfs = opendir("/proc")))
+ return NULL;
+ PT->flags = flags;
+ va_start(ap, flags); /* Init args list */
+ if (Do(PID))
+ PT->pids = va_arg(ap, pid_t*);
+ else if (Do(TTY))
+ PT->ttys = va_arg(ap, dev_t*);
+ else if (Do(UID)) {
+ PT->uids = va_arg(ap, uid_t*);
+ PT->nuid = va_arg(ap, int);
+ } else if (Do(STAT))
+ PT->stats = va_arg(ap, char*);
+ va_end(ap); /* Clean up args list */
+ if (Do(ANYTTY) && Do(TTY))
+ PT->flags = PT->flags & ~PROC_TTY; /* turn off TTY flag */
+ return PT;
+}
+
+/* terminate a process table scan
+ */
+void closeproc(PROCTAB* PT) {
+ if (PT){
+ if (PT->procfs) closedir(PT->procfs);
+ free(PT);
+ }
+}
+
+/* deallocate the space allocated by readproc if the passed rbuf was NULL
+ */
+void freeproc(proc_t* p) {
+ if (!p) /* in case p is NULL */
+ return;
+ /* ptrs are after strings to avoid copying memory when building them. */
+ /* so free is called on the address of the address of strvec[0]. */
+ if (p->cmdline)
+ free((void*)*p->cmdline);
+ if (p->environ)
+ free((void*)*p->environ);
+ free(p);
+}
+
+
+
+static void status2proc (char* S, proc_t* P, int fill) {
+ char* tmp;
+ if (fill == 1) {
+ memset(P->cmd, 0, sizeof P->cmd);
+ sscanf (S, "Name:\t%15c", P->cmd);
+ tmp = strchr(P->cmd,'\n');
+ *tmp='\0';
+ tmp = strstr (S,"State");
+ sscanf (tmp, "State:\t%c", &P->state);
+ }
+
+ tmp = strstr (S,"Pid:");
+ if(tmp) sscanf (tmp,
+ "Pid:\t%d\n"
+ "PPid:\t%d\n",
+ &P->pid,
+ &P->ppid
+ );
+ else fprintf(stderr, "Internal error!\n");
+
+ tmp = strstr (S,"Uid:");
+ if(tmp) sscanf (tmp,
+ "Uid:\t%d\t%d\t%d\t%d",
+ &P->ruid, &P->euid, &P->suid, &P->fuid
+ );
+ else fprintf(stderr, "Internal error!\n");
+
+ tmp = strstr (S,"Gid:");
+ if(tmp) sscanf (tmp,
+ "Gid:\t%d\t%d\t%d\t%d",
+ &P->rgid, &P->egid, &P->sgid, &P->fgid
+ );
+ else fprintf(stderr, "Internal error!\n");
+
+ tmp = strstr (S,"VmSize:");
+ if(tmp) sscanf (tmp,
+ "VmSize: %lu kB\n"
+ "VmLck: %lu kB\n"
+ "VmRSS: %lu kB\n"
+ "VmData: %lu kB\n"
+ "VmStk: %lu kB\n"
+ "VmExe: %lu kB\n"
+ "VmLib: %lu kB\n",
+ &P->vm_size, &P->vm_lock, &P->vm_rss, &P->vm_data,
+ &P->vm_stack, &P->vm_exe, &P->vm_lib
+ );
+ else /* looks like an annoying kernel thread */
+ {
+ P->vm_size = 0;
+ P->vm_lock = 0;
+ P->vm_rss = 0;
+ P->vm_data = 0;
+ P->vm_stack = 0;
+ P->vm_exe = 0;
+ P->vm_lib = 0;
+ }
+
+ tmp = strstr (S,"SigPnd:");
+ if(tmp) sscanf (tmp,
+#ifdef SIGNAL_STRING
+ "SigPnd: %s SigBlk: %s SigIgn: %s %*s %s",
+ P->signal, P->blocked, P->sigignore, P->sigcatch
+#else
+ "SigPnd: %Lx SigBlk: %Lx SigIgn: %Lx %*s %Lx",
+ &P->signal, &P->blocked, &P->sigignore, &P->sigcatch
+#endif
+ );
+ else fprintf(stderr, "Internal error!\n");
+}
+
+
+
+/* stat2proc() makes sure it can handle arbitrary executable file basenames
+ * for `cmd', i.e. those with embedded whitespace or embedded ')'s.
+ * Such names confuse %s (see scanf(3)), so the string is split and %39c
+ * is used instead. (except for embedded ')' "(%[^)]c)" would work.
+ */
+static void stat2proc(char* S, proc_t* P) {
+ int num;
+ char* tmp = strrchr(S, ')'); /* split into "PID (cmd" and "<rest>" */
+ *tmp = '\0'; /* replace trailing ')' with NUL */
+ /* fill in default values for older kernels */
+ P->exit_signal = SIGCHLD;
+ P->processor = 0;
+ /* parse these two strings separately, skipping the leading "(". */
+ memset(P->cmd, 0, sizeof P->cmd); /* clear even though *P xcalloc'd ?! */
+ sscanf(S, "%d (%15c", &P->pid, P->cmd); /* comm[16] in kernel */
+ num = sscanf(tmp + 2, /* skip space after ')' too */
+ "%c "
+ "%d %d %d %d %d "
+ "%lu %lu %lu %lu %lu %lu %lu "
+ "%ld %ld %ld %ld %ld %ld "
+ "%lu %lu "
+ "%ld "
+ "%lu %lu %lu %lu %lu %lu "
+ "%*s %*s %*s %*s " /* discard, no RT signals & Linux 2.1 used hex */
+ "%lu %lu %lu "
+ "%d %d",
+ &P->state,
+ &P->ppid, &P->pgrp, &P->session, &P->tty, &P->tpgid,
+ &P->flags, &P->min_flt, &P->cmin_flt, &P->maj_flt, &P->cmaj_flt, &P->utime, &P->stime,
+ &P->cutime, &P->cstime, &P->priority, &P->nice, &P->timeout, &P->it_real_value,
+ &P->start_time, &P->vsize,
+ &P->rss,
+ &P->rss_rlim, &P->start_code, &P->end_code, &P->start_stack, &P->kstk_esp, &P->kstk_eip,
+/* P->signal, P->blocked, P->sigignore, P->sigcatch, */ /* can't use */
+ &P->wchan, &P->nswap, &P->cnswap,
+/* -- Linux 2.0.35 ends here -- */
+ &P->exit_signal, &P->processor /* 2.2.1 ends with "exit_signal" */
+/* -- Linux 2.2.8 and 2.3.47 end here -- */
+ );
+
+ /* fprintf(stderr, "stat2proc converted %d fields.\n",num); */
+ if (P->tty == 0)
+ P->tty = -1; /* the old notty val, update elsewhere bef. moving to 0 */
+}
+
+static void statm2proc(char* s, proc_t* P) {
+ int num;
+ num = sscanf(s, "%ld %ld %ld %ld %ld %ld %ld",
+ &P->size, &P->resident, &P->share,
+ &P->trs, &P->lrs, &P->drs, &P->dt);
+/* fprintf(stderr, "statm2proc converted %d fields.\n",num); */
+}
+
+static int file2str(char *directory, char *what, char *ret, int cap) {
+ static char filename[80];
+ int fd, num_read;
+
+ sprintf(filename, "%s/%s", directory, what);
+ if ( (fd = open(filename, O_RDONLY, 0)) == -1 ) return -1;
+ if ( (num_read = read(fd, ret, cap - 1)) <= 0 ) num_read = -1;
+ else ret[num_read] = 0;
+ close(fd);
+ return num_read;
+}
+
+static char** file2strvec(char* directory, char* what) {
+ char buf[2048]; /* read buf bytes at a time */
+ char *p, *rbuf = 0, *endbuf, **q, **ret;
+ int fd, tot = 0, n, c, end_of_file = 0;
+ int align;
+
+ sprintf(buf, "%s/%s", directory, what);
+ if ( (fd = open(buf, O_RDONLY, 0) ) == -1 ) return NULL;
+
+ /* read whole file into a memory buffer, allocating as we go */
+ while ((n = read(fd, buf, sizeof buf - 1)) > 0) {
+ if (n < sizeof buf - 1)
+ end_of_file = 1;
+ if (n == 0 && rbuf == 0)
+ return NULL; /* process died between our open and read */
+ if (n < 0) {
+ if (rbuf)
+ free(rbuf);
+ return NULL; /* read error */
+ }
+ if (end_of_file && buf[n-1]) /* last read char not null */
+ buf[n++] = '\0'; /* so append null-terminator */
+ rbuf = xrealloc(rbuf, tot + n); /* allocate more memory */
+ memcpy(rbuf + tot, buf, n); /* copy buffer into it */
+ tot += n; /* increment total byte ctr */
+ if (end_of_file)
+ break;
+ }
+ close(fd);
+ if (n <= 0 && !end_of_file) {
+ if (rbuf) free(rbuf);
+ return NULL; /* read error */
+ }
+ endbuf = rbuf + tot; /* count space for pointers */
+ align = (sizeof(char*)-1) - ((tot + sizeof(char*)-1) & (sizeof(char*)-1));
+ for (c = 0, p = rbuf; p < endbuf; p++)
+ if (!*p)
+ c += sizeof(char*);
+ c += sizeof(char*); /* one extra for NULL term */
+
+ rbuf = xrealloc(rbuf, tot + c + align); /* make room for ptrs AT END */
+ endbuf = rbuf + tot; /* addr just past data buf */
+ q = ret = (char**) (endbuf+align); /* ==> free(*ret) to dealloc */
+ *q++ = p = rbuf; /* point ptrs to the strings */
+ endbuf--; /* do not traverse final NUL */
+ while (++p < endbuf)
+ if (!*p) /* NUL char implies that */
+ *q++ = p+1; /* next string -> next char */
+
+ *q = 0; /* null ptr list terminator */
+ return ret;
+}
+
+
+/* These are some nice GNU C expression subscope "inline" functions.
+ * The can be used with arbitrary types and evaluate their arguments
+ * exactly once.
+ */
+
+/* Test if item X of type T is present in the 0 terminated list L */
+# define XinL(T, X, L) ( { \
+ T x = (X), *l = (L); \
+ while (*l && *l != x) l++; \
+ *l == x; \
+ } )
+
+/* Test if item X of type T is present in the list L of length N */
+# define XinLN(T, X, L, N) ( { \
+ T x = (X), *l = (L); \
+ int i = 0, n = (N); \
+ while (i < n && l[i] != x) i++; \
+ i < n && l[i] == x; \
+ } )
+
+/* readproc: return a pointer to a proc_t filled with requested info about the
+ * next process available matching the restriction set. If no more such
+ * processes are available, return a null pointer (boolean false). Use the
+ * passed buffer instead of allocating space if it is non-NULL. */
+
+/* This is optimized so that if a PID list is given, only those files are
+ * searched for in /proc. If other lists are given in addition to the PID list,
+ * the same logic can follow through as for the no-PID list case. This is
+ * fairly complex, but it does try to not to do any unnecessary work.
+ * Unfortunately, the reverse filtering option in which any PID *except* the
+ * ones listed is pursued.
+ */
+proc_t* readproc(PROCTAB* PT, proc_t* rbuf) {
+ static struct direct *ent; /* dirent handle */
+ static struct stat sb; /* stat buffer */
+ static char path[32], sbuf[512]; /* bufs for stat,statm */
+ int allocated = 0, matched = 0; /* flags */
+ proc_t *p = NULL;
+
+ /* loop until a proc matching restrictions is found or no more processes */
+ /* I know this could be a while loop -- this way is easier to indent ;-) */
+next_proc: /* get next PID for consideration */
+
+/*printf("PT->flags is 0x%08x\n", PT->flags);*/
+#define flags (PT->flags)
+
+ if (Do(PID)) {
+ if (!*PT->pids) /* set to next item in pids */
+ return NULL;
+ sprintf(path, "/proc/%d", *(PT->pids)++);
+ matched = 1;
+ } else { /* get next numeric /proc ent */
+ while ((ent = readdir(PT->procfs)) &&
+ (*ent->d_name < '0' || *ent->d_name > '9'))
+ ;
+ if (!ent || !ent->d_name)
+ return NULL;
+ sprintf(path, "/proc/%s", ent->d_name);
+ }
+ if (stat(path, &sb) == -1) /* no such dirent (anymore) */
+ goto next_proc;
+ if (Do(UID) && !XinLN(uid_t, sb.st_uid, PT->uids, PT->nuid))
+ goto next_proc; /* not one of the requested uids */
+
+ if (!allocated) { /* assign mem for return buf */
+ p = rbuf ? rbuf : xcalloc(p, sizeof *p); /* passed buf or alloced mem */
+ allocated = 1; /* remember space is set up */
+ }
+ p->euid = sb.st_uid; /* need a way to get real uid */
+
+ if ((file2str(path, "stat", sbuf, sizeof sbuf)) == -1)
+ goto next_proc; /* error reading /proc/#/stat */
+ stat2proc(sbuf, p); /* parse /proc/#/stat */
+
+ if (!matched && Do(TTY) && !XinL(dev_t, p->tty, PT->ttys))
+ goto next_proc; /* not one of the requested ttys */
+
+ if (!matched && Do(ANYTTY) && p->tty == -1)
+ goto next_proc; /* no controlling terminal */
+
+ if (!matched && Do(STAT) && !strchr(PT->stats,p->state))
+ goto next_proc; /* not one of the requested states */
+
+ if (Do(FILLMEM)) { /* read, parse /proc/#/statm */
+ if ((file2str(path, "statm", sbuf, sizeof sbuf)) != -1 )
+ statm2proc(sbuf, p); /* ignore statm errors here */
+ } /* statm fields just zero */
+
+ if (Do(FILLSTATUS)) { /* read, parse /proc/#/status */
+ if ((file2str(path, "status", sbuf, sizeof sbuf)) != -1 ){
+ status2proc(sbuf, p, 0 /*FIXME*/);
+ }
+ }
+
+ /* some number->text resolving which is time consuming */
+ if (Do(FILLUSR)){
+ strncpy(p->euser, user_from_uid(p->euid), sizeof p->euser);
+ strncpy(p->egroup, group_from_gid(p->egid), sizeof p->egroup);
+ if(Do(FILLSTATUS)) {
+ strncpy(p->ruser, user_from_uid(p->ruid), sizeof p->ruser);
+ strncpy(p->rgroup, group_from_gid(p->rgid), sizeof p->rgroup);
+ strncpy(p->suser, user_from_uid(p->suid), sizeof p->suser);
+ strncpy(p->sgroup, group_from_gid(p->sgid), sizeof p->sgroup);
+ strncpy(p->fuser, user_from_uid(p->fuid), sizeof p->fuser);
+ strncpy(p->fgroup, group_from_gid(p->fgid), sizeof p->fgroup);
+ }
+ }
+
+ if (Do(FILLCMD)) /* read+parse /proc/#/cmdline */
+ p->cmdline = file2strvec(path, "cmdline");
+ if (Do(FILLENV)) /* read+parse /proc/#/environ */
+ p->environ = file2strvec(path, "environ");
+
+ if (p->state == 'Z') /* fixup cmd for zombies */
+ strncat(p->cmd," <defunct>", sizeof p->cmd);
+
+ return p;
+}
+#undef flags
+
+/* ps_readproc: return a pointer to a proc_t filled with requested info about the
+ * next process available matching the restriction set. If no more such
+ * processes are available, return a null pointer (boolean false). Use the
+ * passed buffer instead of allocating space if it is non-NULL. */
+
+/* This is optimized so that if a PID list is given, only those files are
+ * searched for in /proc. If other lists are given in addition to the PID list,
+ * the same logic can follow through as for the no-PID list case. This is
+ * fairly complex, but it does try to not to do any unnecessary work.
+ * Unfortunately, the reverse filtering option in which any PID *except* the
+ * ones listed is pursued.
+ */
+proc_t* ps_readproc(PROCTAB* PT, proc_t* rbuf) {
+ static struct direct *ent; /* dirent handle */
+ static struct stat sb; /* stat buffer */
+ static char path[32], sbuf[512]; /* bufs for stat,statm */
+ int allocated = 0 /* , matched = 0 */ ; /* flags */
+ proc_t *p = NULL;
+
+ /* loop until a proc matching restrictions is found or no more processes */
+ /* I know this could be a while loop -- this way is easier to indent ;-) */
+next_proc: /* get next PID for consideration */
+
+/*printf("PT->flags is 0x%08x\n", PT->flags);*/
+#define flags (PT->flags)
+
+ while ((ent = readdir(PT->procfs)) &&
+ (*ent->d_name < '0' || *ent->d_name > '9'))
+ ;
+ if (!ent || !ent->d_name)
+ return NULL;
+ sprintf(path, "/proc/%s", ent->d_name);
+
+ if (stat(path, &sb) == -1) /* no such dirent (anymore) */
+ goto next_proc;
+
+ if (!allocated) { /* assign mem for return buf */
+ p = rbuf ? rbuf : xcalloc(p, sizeof *p); /* passed buf or alloced mem */
+ allocated = 1; /* remember space is set up */
+ }
+ p->euid = sb.st_uid; /* need a way to get real uid */
+
+ if ((file2str(path, "stat", sbuf, sizeof sbuf)) == -1)
+ goto next_proc; /* error reading /proc/#/stat */
+ stat2proc(sbuf, p); /* parse /proc/#/stat */
+
+/* if (Do(FILLMEM)) {*/ /* read, parse /proc/#/statm */
+ if ((file2str(path, "statm", sbuf, sizeof sbuf)) != -1 )
+ statm2proc(sbuf, p); /* ignore statm errors here */
+/* } */ /* statm fields just zero */
+
+ /* if (Do(FILLSTATUS)) { */ /* read, parse /proc/#/status */
+ if ((file2str(path, "status", sbuf, sizeof sbuf)) != -1 ){
+ status2proc(sbuf, p, 0 /*FIXME*/);
+ }
+/* }*/
+
+ /* some number->text resolving which is time consuming */
+ /* if (Do(FILLUSR)){ */
+ strncpy(p->euser, user_from_uid(p->euid), sizeof p->euser);
+ strncpy(p->egroup, group_from_gid(p->egid), sizeof p->egroup);
+/* if(Do(FILLSTATUS)) { */
+ strncpy(p->ruser, user_from_uid(p->ruid), sizeof p->ruser);
+ strncpy(p->rgroup, group_from_gid(p->rgid), sizeof p->rgroup);
+ strncpy(p->suser, user_from_uid(p->suid), sizeof p->suser);
+ strncpy(p->sgroup, group_from_gid(p->sgid), sizeof p->sgroup);
+ strncpy(p->fuser, user_from_uid(p->fuid), sizeof p->fuser);
+ strncpy(p->fgroup, group_from_gid(p->fgid), sizeof p->fgroup);
+/* }*/
+/* }*/
+
+/* if (Do(FILLCMD)) */ /* read+parse /proc/#/cmdline */
+ p->cmdline = file2strvec(path, "cmdline");
+/* if (Do(FILLENV)) */ /* read+parse /proc/#/environ */
+ p->environ = file2strvec(path, "environ");
+
+ if (p->state == 'Z') /* fixup cmd for zombies */
+ strncat(p->cmd," <defunct>", sizeof p->cmd);
+
+ return p;
+}
+#undef flags
+
+
+void look_up_our_self(proc_t *p) {
+ static char path[32], sbuf[512]; /* bufs for stat,statm */
+ sprintf(path, "/proc/%d", getpid());
+ file2str(path, "stat", sbuf, sizeof sbuf);
+ stat2proc(sbuf, p); /* parse /proc/#/stat */
+ file2str(path, "statm", sbuf, sizeof sbuf);
+ statm2proc(sbuf, p); /* ignore statm errors here */
+ file2str(path, "status", sbuf, sizeof sbuf);
+ status2proc(sbuf, p, 0 /*FIXME*/);
+}
+
+
+/* Convenient wrapper around openproc and readproc to slurp in the whole process
+ * tree subset satisfying the constraints of flags and the optional PID list.
+ * Free allocated memory with freeproctree(). The tree structure is a classic
+ * left-list children + right-list siblings. The algorithm is a two-pass of the
+ * process table. Since most process trees will have children with strictly
+ * increasing PIDs, most of the structure will be picked up in the first pass.
+ * The second loop then cleans up any nodes which turn out to have preceeded
+ * their parent in /proc order.
+ */
+
+/* Traverse tree 't' breadth-first looking for a process with pid p */
+static proc_t* LookupPID(proc_t* t, pid_t p) {
+ proc_t* tmp = NULL;
+ if (!t)
+ return NULL;
+ if (t->pid == p) /* look here/terminate recursion */
+ return t;
+ if ((tmp = LookupPID(t->l, p))) /* recurse over children */
+ return tmp;
+ for (; t; t=t->r) /* recurse over siblings */
+ if ((tmp = LookupPID(tmp, p)))
+ return tmp;
+ return NULL;
+}
+
+/* Convenient wrapper around openproc and readproc to slurp in the whole process
+ * table subset satisfying the constraints of flags and the optional PID list.
+ * Free allocated memory with freeproctab(). Access via tab[N]->member. The
+ * pointer list is NULL terminated.
+ */
+proc_t** readproctab(int flags, ...) {
+ PROCTAB* PT = NULL;
+ proc_t** tab = NULL;
+ int n = 0;
+ va_list ap;
+
+ va_start(ap, flags); /* pass through args to openproc */
+ if (Do(UID)) {
+ /* temporary variables to ensure that va_arg() instances
+ * are called in the right order
+ */
+ uid_t* u;
+ int i;
+
+ u = va_arg(ap, uid_t*);
+ i = va_arg(ap, int);
+ PT = openproc(flags, u, i);
+ }
+ else if (Do(PID) || Do(TTY) || Do(STAT))
+ PT = openproc(flags, va_arg(ap, void*)); /* assume ptr sizes same */
+ else
+ PT = openproc(flags);
+ va_end(ap);
+ do { /* read table: */
+ tab = xrealloc(tab, (n+1)*sizeof(proc_t*));/* realloc as we go, using */
+ tab[n] = readproc(PT, NULL); /* final null to terminate */
+ } while (tab[n++]); /* stop when NULL reached */
+ closeproc(PT);
+ return tab;
+}
--- /dev/null
+#ifndef PROCPS_PROC_READPROC_H
+#define PROCPS_PROC_READPROC_H
+/*
+ * New Interface to Process Table -- PROCTAB Stream (a la Directory streams)
+ * Copyright (C) 1996 Charles L. Blake.
+ * Copyright (C) 1998 Michael K. Johnson
+ * May be distributed under the terms of the
+ * GNU Library General Public License, a copy of which is provided
+ * in the file COPYING
+ */
+
+
+#define SIGNAL_STRING
+
+
+/*
+ ld cutime, cstime, priority, nice, timeout, it_real_value, rss,
+ c state,
+ d ppid, pgrp, session, tty, tpgid,
+ s signal, blocked, sigignore, sigcatch,
+ lu flags, min_flt, cmin_flt, maj_flt, cmaj_flt, utime, stime,
+ lu rss_rlim, start_code, end_code, start_stack, kstk_esp, kstk_eip,
+ lu start_time, vsize, wchan, nswap, cnswap,
+*/
+
+/* Basic data structure which holds all information we can get about a process.
+ * (unless otherwise specified, fields are read from /proc/#/stat)
+ *
+ * Most of it comes from task_struct in linux/sched.h
+ */
+typedef struct proc_s {
+#ifdef SIGNAL_STRING
+ char
+ /* Linux 2.1.7x and up have more signals. This handles 88. */
+ signal[24], /* mask of pending signals */
+ blocked[24], /* mask of blocked signals */
+ sigignore[24], /* mask of ignored signals */
+ sigcatch[24]; /* mask of caught signals */
+#else
+ long long
+ /* Linux 2.1.7x and up have more signals. This handles 64. */
+ signal, /* mask of pending signals */
+ blocked, /* mask of blocked signals */
+ sigignore, /* mask of ignored signals */
+ sigcatch; /* mask of caught signals */
+#endif
+ long
+ cutime, /* cumulative utime of process and reaped children */
+ cstime, /* cumulative stime of process and reaped children */
+ priority, /* kernel scheduling priority */
+ timeout, /* ? */
+ nice, /* standard unix nice level of process */
+ rss, /* resident set size from /proc/#/stat (pages) */
+ it_real_value, /* ? */
+ /* the next 7 members come from /proc/#/statm */
+ size, /* total # of pages of memory */
+ resident, /* number of resident set (non-swapped) pages (4k) */
+ share, /* number of pages of shared (mmap'd) memory */
+ trs, /* text resident set size */
+ lrs, /* shared-lib resident set size */
+ drs, /* data resident set size */
+ dt; /* dirty pages */
+ unsigned long
+ /* FIXME: are these longs? Maybe when the alpha does PCI bounce buffers */
+ vm_size, /* same as vsize in kb */
+ vm_lock, /* locked pages in kb */
+ vm_rss, /* same as rss in kb */
+ vm_data, /* data size */
+ vm_stack, /* stack size */
+ vm_exe, /* executable size */
+ vm_lib, /* library size (all pages, not just used ones) */
+ vsize, /* number of pages of virtual memory ... */
+ rss_rlim, /* resident set size limit? */
+ flags, /* kernel flags for the process */
+ min_flt, /* number of minor page faults since process start */
+ maj_flt, /* number of major page faults since process start */
+ cmin_flt, /* cumulative min_flt of process and child processes */
+ cmaj_flt, /* cumulative maj_flt of process and child processes */
+ nswap, /* ? */
+ cnswap, /* cumulative nswap ? */
+ utime, /* user-mode CPU time accumulated by process */
+ stime, /* kernel-mode CPU time accumulated by process */
+ start_code, /* address of beginning of code segment */
+ end_code, /* address of end of code segment */
+ start_stack, /* address of the bottom of stack for the process */
+ kstk_esp, /* kernel stack pointer */
+ kstk_eip, /* kernel instruction pointer */
+ start_time, /* start time of process -- seconds since 1-1-70 */
+ wchan; /* address of kernel wait channel proc is sleeping in */
+ struct proc_s *l, /* ptrs for building arbitrary linked structs */
+ *r; /* (i.e. singly/doubly-linked lists and trees */
+ char
+ **environ, /* environment string vector (/proc/#/environ) */
+ **cmdline; /* command line string vector (/proc/#/cmdline) */
+ char
+ /* Be compatible: Digital allows 16 and NT allows 14 ??? */
+ ruser[16], /* real user name */
+ euser[16], /* effective user name */
+ suser[16], /* saved user name */
+ fuser[16], /* filesystem user name */
+ rgroup[16], /* real group name */
+ egroup[16], /* effective group name */
+ sgroup[16], /* saved group name */
+ fgroup[16], /* filesystem group name */
+ cmd[16]; /* basename of executable file in call to exec(2) */
+ int
+ ruid, rgid, /* real */
+ euid, egid, /* effective */
+ suid, sgid, /* saved */
+ fuid, fgid, /* fs (used for file access only) */
+ pid, /* process id */
+ ppid, /* pid of parent process */
+ pgrp, /* process group id */
+ session, /* session id */
+ tty, /* full device number of controlling terminal */
+ tpgid, /* terminal process group id */
+ exit_signal, /* might not be SIGCHLD */
+ processor; /* current (or most recent?) CPU */
+ unsigned
+ pcpu; /* %CPU usage (is not filled in by readproc!!!) */
+ char
+ state; /* single-char code for process state (S=sleeping) */
+} proc_t;
+
+/* PROCTAB: data structure holding the persistent information readproc needs
+ * from openproc(). The setup is intentionally similar to the dirent interface
+ * and other system table interfaces (utmp+wtmp come to mind).
+ */
+#include <sys/types.h>
+#include <dirent.h>
+#include <unistd.h>
+typedef struct {
+ DIR* procfs;
+ int flags;
+ pid_t* pids; /* pids of the procs */
+ dev_t* ttys; /* devnos of the cttys */
+ uid_t* uids; /* uids of procs */
+ int nuid; /* cannot really sentinel-terminate unsigned short[] */
+ char* stats; /* status chars (actually output into /proc//stat) */
+} PROCTAB;
+
+/* initialize a PROCTAB structure holding needed call-to-call persistent data
+ */
+PROCTAB* openproc(int flags, ... /* pid_t*|uid_t*|dev_t*|char* [, int n] */ );
+
+
+/* Convenient wrapper around openproc and readproc to slurp in the whole process
+ * table subset satisfying the constraints of flags and the optional PID list.
+ * Free allocated memory with freeproctab(). Access via tab[N]->member. The
+ * pointer list is NULL terminated.
+ */
+proc_t** readproctab(int flags, ... /* same as openproc */ );
+
+/* clean-up open files, etc from the openproc()
+ */
+void closeproc(PROCTAB* PT);
+
+/* retrieve the next process matching the criteria set by the openproc()
+ */
+proc_t* readproc(PROCTAB* PT, proc_t* return_buf);
+proc_t* ps_readproc(PROCTAB* PT, proc_t* return_buf);
+
+void look_up_our_self(proc_t *p);
+
+/* deallocate space allocated by readproc
+ */
+void freeproc(proc_t* p);
+
+/* openproc/readproctab:
+ *
+ * Return PROCTAB* / *proc_t[] or NULL on error ((probably) "/proc" cannot be
+ * opened.) By default readproc will consider all processes as valid to parse
+ * and return, but not actually fill in the cmdline, environ, and /proc/#/statm
+ * derived memory fields.
+ *
+ * `flags' (a bitwise-or of PROC_* below) modifies the default behavior. The
+ * "fill" options will cause more of the proc_t to be filled in. The "filter"
+ * options all use the second argument as the pointer to a list of objects:
+ * process status', process id's, user id's, and tty device numbers. The third
+ * argument is the length of the list (currently only used for lists of user
+ * id's since unsigned short[] supports no convenient termination sentinel.)
+ */
+#define PROC_FILLANY 0x00 /* either stat or status will do */
+#define PROC_FILLMEM 0x01 /* read statm into the appropriate proc_t entries */
+#define PROC_FILLCMD 0x02 /* alloc and fill in `cmdline' part of proc_t */
+#define PROC_FILLENV 0x04 /* alloc and fill in `environ' part of proc_t */
+#define PROC_FILLUSR 0x08 /* resolve user id number -> user name via passwd */
+#define PROC_FILLSTATUS 0x10
+#define PROC_FILLSTAT 0x20
+#define PROC_FILLBUG 0x3f /* No idea what we need */
+
+
+/* Obsolete, consider only processes with one of the passed: */
+#define PROC_PID 0x0100 /* process id numbers ( 0 terminated) */
+#define PROC_TTY 0x0200 /* ctty device nos. ( 0 terminated) */
+#define PROC_UID 0x0400 /* user id numbers ( length needed ) */
+#define PROC_STAT 0x0800 /* status fields ('\0' terminated) */
+#define PROC_ANYTTY 0x1000 /* proc must have a controlling terminal */
+
+#endif
--- /dev/null
+/*
+ * Copyright 1998 by Albert Cahalan; all rights resered.
+ * This file may be used subject to the terms and conditions of the
+ * GNU Library General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+#include <signal.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+/* Linux signals:
+ *
+ * SIGSYS is required by Unix98.
+ * SIGEMT is part of SysV, BSD, and ancient UNIX tradition.
+ *
+ * They are provided by these Linux ports: alpha, mips, sparc, and sparc64.
+ * You get SIGSTKFLT and SIGUNUSED instead on i386, m68k, ppc, and arm.
+ * (this is a Linux & libc bug -- both must be fixed)
+ *
+ * Total garbage: SIGIO SIGINFO SIGIOT SIGLOST SIGCLD
+ * (popular ones are handled as aliases)
+ * Nearly garbage: SIGSTKFLT SIGUNUSED (nothing else to fill slots)
+ */
+
+/* Linux 2.3.29 replaces SIGUNUSED with the standard SIGSYS signal */
+#ifndef SIGSYS
+# warning Standards require that <signal.h> define SIGSYS
+# define SIGSYS SIGUNUSED
+#endif
+
+/* If we see both, it is likely SIGSTKFLT (junk) was replaced. */
+#ifdef SIGEMT
+# undef SIGSTKFLT
+#endif
+
+#ifndef SIGRTMIN
+# warning Standards require that <signal.h> define SIGRTMIN; assuming 32
+# define SIGRTMIN 32
+#endif
+
+/* It seems the SPARC libc does not know the kernel supports SIGPWR. */
+#ifndef SIGPWR
+# warning Your header files lack SIGPWR. (assuming it is number 29)
+# define SIGPWR 29
+#endif
+
+typedef struct mapstruct {
+ char *name;
+ int num;
+} mapstruct;
+
+
+static mapstruct sigtable[] = {
+ {"ABRT", SIGABRT}, /* IOT */
+ {"ALRM", SIGALRM},
+ {"BUS", SIGBUS},
+ {"CHLD", SIGCHLD}, /* CLD */
+ {"CONT", SIGCONT},
+#ifdef SIGEMT
+ {"EMT", SIGEMT},
+#endif
+ {"FPE", SIGFPE},
+ {"HUP", SIGHUP},
+ {"ILL", SIGILL},
+ {"INT", SIGINT},
+ {"KILL", SIGKILL},
+ {"PIPE", SIGPIPE},
+ {"POLL", SIGPOLL}, /* IO */
+ {"PROF", SIGPROF},
+ {"PWR", SIGPWR},
+ {"QUIT", SIGQUIT},
+ {"SEGV", SIGSEGV},
+#ifdef SIGSTKFLT
+ {"STKFLT", SIGSTKFLT},
+#endif
+ {"STOP", SIGSTOP},
+ {"SYS", SIGSYS}, /* UNUSED */
+ {"TERM", SIGTERM},
+ {"TRAP", SIGTRAP},
+ {"TSTP", SIGTSTP},
+ {"TTIN", SIGTTIN},
+ {"TTOU", SIGTTOU},
+ {"URG", SIGURG},
+ {"USR1", SIGUSR1},
+ {"USR2", SIGUSR2},
+ {"VTALRM", SIGVTALRM},
+ {"WINCH", SIGWINCH},
+ {"XCPU", SIGXCPU},
+ {"XFSZ", SIGXFSZ}
+};
+
+static const int number_of_signals = sizeof(sigtable)/sizeof(mapstruct);
+
+static int compare_signal_names(const void *a, const void *b){
+ return strcasecmp( ((mapstruct*)a)->name, ((mapstruct*)b)->name );
+}
+
+/* return -1 on failure */
+int signal_name_to_number(char *name){
+ const mapstruct *ptr;
+ mapstruct ms;
+ long val;
+ char *endp;
+ int offset;
+
+ /* clean up name */
+ if(!strncasecmp(name,"SIG",3)) name += 3;
+
+ if(!strcasecmp(name,"CLD")) return SIGCHLD;
+ if(!strcasecmp(name,"IO")) return SIGPOLL;
+ if(!strcasecmp(name,"IOT")) return SIGABRT;
+
+ /* search the table */
+ ms.name = name;
+ ptr = bsearch(&ms, sigtable, number_of_signals,
+ sizeof(mapstruct), compare_signal_names
+ );
+ if(ptr) return ptr->num;
+
+ if(!strcasecmp(name,"RTMIN")) return SIGRTMIN;
+ if(!strcasecmp(name,"EXIT")) return 0;
+ if(!strcasecmp(name,"NULL")) return 0;
+
+ offset = 0;
+ if(!strncasecmp(name,"RTMIN+",6)){
+ name += 6;
+ offset = SIGRTMIN;
+ }
+
+ /* not found, so try as a number */
+ val = strtol(name,&endp,10);
+ if(*endp) return -1; /* not valid */
+ if(val+SIGRTMIN>127) return -1; /* not valid */
+ return val+offset;
+}
+
+static const char *signal_number_to_name(int signo){
+ static char buf[32];
+ int n = number_of_signals;
+ signo &= 0x7f; /* need to process exit values too */
+ while(n--){
+ if(sigtable[n].num==signo) return sigtable[n].name;
+ }
+ if(signo == SIGRTMIN) return "RTMIN";
+ if(signo) sprintf(buf, "RTMIN+%d", signo-SIGRTMIN);
+ else strcpy(buf,"0"); /* AIX has NULL; Solaris has EXIT */
+ return buf;
+}
+
+int print_given_signals(int argc, char *argv[], int max_line){
+ char buf[1280]; /* 128 signals, "RTMIN+xx" is largest */
+ int ret = 0; /* to be used as exit code by caller */
+ int place = 0; /* position on this line */
+ int amt;
+ if(argc > 128) return 1;
+ while(argc--){
+ char tmpbuf[16];
+ char *txt; /* convenient alias */
+ txt = *argv;
+ if(*txt >= '0' && *txt <= '9'){
+ long val;
+ char *endp;
+ val = strtol(txt,&endp,10);
+ if(*endp){
+ fprintf(stderr, "Signal \"%s\" not known.\n", txt);
+ ret = 1;
+ goto end;
+ }
+ amt = sprintf(tmpbuf, "%s", signal_number_to_name(val));
+ }else{
+ int sno;
+ sno = signal_name_to_number(txt);
+ if(sno == -1){
+ fprintf(stderr, "Signal \"%s\" not known.\n", txt);
+ ret = 1;
+ goto end;
+ }
+ amt = sprintf(tmpbuf, "%d", sno);
+ }
+
+ if(!place){
+ strcpy(buf,tmpbuf);
+ place = amt;
+ goto end;
+ }
+ if(amt+place+1 > max_line){
+ printf("%s\n", buf);
+ strcpy(buf,tmpbuf);
+ place = amt;
+ goto end;
+ }
+ sprintf(buf+place, " %s", tmpbuf);
+ place += amt+1;
+end:
+ argv++;
+ }
+ if(place) printf("%s\n", buf);
+ return ret;
+}
+
+void pretty_print_signals(void){
+ int i = 0;
+ while(++i <= number_of_signals){
+ int n;
+ n = printf("%2d %s", i, signal_number_to_name(i));
+ if(i%7) printf(" \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" + n);
+ else printf("\n");
+ }
+ if((i-1)%7) printf("\n");
+}
+
+void unix_print_signals(void){
+ int pos = 0;
+ int i = 0;
+ while(++i <= number_of_signals){
+ if(i-1) printf("%c", (pos>73)?(pos=0,'\n'):(pos++,' ') );
+ pos += printf("%s", signal_number_to_name(i));
+ }
+ printf("\n");
+}
+
+/* sanity check */
+static int init_signal_list(void) __attribute__((constructor));
+static int init_signal_list(void){
+ if(number_of_signals != 31){
+ fprintf(stderr, "WARNING: %d signals -- adjust and recompile.\n", number_of_signals);
+ }
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright 1998 by Albert Cahalan; all rights resered.
+ * This file may be used subject to the terms and conditions of the
+ * GNU Library General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+
+/* return -1 on failure */
+extern int signal_name_to_number(char *name);
+
+extern int print_given_signals(int argc, char *argv[], int max_line);
+
+extern void pretty_print_signals(void);
+
+extern void unix_print_signals(void);
--- /dev/null
+/***********************************************************************\
+* Copyright (C) 1992-1998 by Michael K. Johnson, johnsonm@redhat.com *
+* *
+* This file is placed under the conditions of the GNU Library *
+* General Public License, version 2, or any later version. *
+* See file COPYING for information on distribution conditions. *
+\***********************************************************************/
+
+
+#include "proc/procps.h"
+#include "proc/readproc.h"
+
+char * status(proc_t* task) {
+ static char buf[4] = " ";
+
+ buf[0] = task->state;
+ if (task->rss == 0 && task->state != 'Z')
+ buf[1] = 'W';
+ else
+ buf[1] = ' ';
+ if (task->nice < 0)
+ buf[2] = '<';
+ else if (task->nice > 0)
+ buf[2] = 'N';
+ else
+ buf[2] = ' ';
+
+ return(buf);
+}
--- /dev/null
+#ifndef __PROC_STATUS_H
+#define __PROC_STATUS_H
+extern char *status(proc_t* task);
+#endif
--- /dev/null
+/***********************************************************************\
+* Copyright (C) 1992-1998 by Michael K. Johnson, johnsonm@redhat.com *
+* *
+* This file is placed under the conditions of the GNU Library *
+* General Public License, version 2, or any later version. *
+* See file COPYING for information on distribution conditions. *
+\***********************************************************************/
+
+/* File for parsing top-level /proc entities. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#include <unistd.h>
+#include <fcntl.h>
+#include "proc/version.h"
+#include "proc/sysinfo.h" /* include self to verify prototypes */
+
+#ifndef HZ
+#include <netinet/in.h> /* htons */
+#endif
+
+long smp_num_cpus; /* number of CPUs */
+
+#define BAD_OPEN_MESSAGE \
+"Error: /proc must be mounted\n" \
+" To mount /proc at boot you need an /etc/fstab line like:\n" \
+" /proc /proc proc defaults\n" \
+" In the meantime, mount /proc /proc -t proc\n"
+
+#define STAT_FILE "/proc/stat"
+static int stat_fd = -1;
+#define UPTIME_FILE "/proc/uptime"
+static int uptime_fd = -1;
+#define LOADAVG_FILE "/proc/loadavg"
+static int loadavg_fd = -1;
+#define MEMINFO_FILE "/proc/meminfo"
+static int meminfo_fd = -1;
+
+static char buf[1024];
+
+/* This macro opens filename only if necessary and seeks to 0 so
+ * that successive calls to the functions are more efficient.
+ * It also reads the current contents of the file into the global buf.
+ */
+#define FILE_TO_BUF(filename, fd) do{ \
+ static int local_n; \
+ if (fd == -1 && (fd = open(filename, O_RDONLY)) == -1) { \
+ fprintf(stderr, BAD_OPEN_MESSAGE); \
+ fflush(NULL); \
+ _exit(102); \
+ } \
+ lseek(fd, 0L, SEEK_SET); \
+ if ((local_n = read(fd, buf, sizeof buf - 1)) < 0) { \
+ perror(filename); \
+ fflush(NULL); \
+ _exit(103); \
+ } \
+ buf[local_n] = '\0'; \
+}while(0)
+
+/* evals 'x' twice */
+#define SET_IF_DESIRED(x,y) do{ if(x) *(x) = (y); }while(0)
+
+
+/***********************************************************************/
+int uptime(double *uptime_secs, double *idle_secs) {
+ double up=0, idle=0;
+
+ FILE_TO_BUF(UPTIME_FILE,uptime_fd);
+ if (sscanf(buf, "%lf %lf", &up, &idle) < 2) {
+ fprintf(stderr, "bad data in " UPTIME_FILE "\n");
+ return 0;
+ }
+ SET_IF_DESIRED(uptime_secs, up);
+ SET_IF_DESIRED(idle_secs, idle);
+ return up; /* assume never be zero seconds in practice */
+}
+
+/***********************************************************************
+ * Some values in /proc are expressed in units of 1/HZ seconds, where HZ
+ * is the kernel clock tick rate. One of these units is called a jiffy.
+ * The HZ value used in the kernel may vary according to hacker desire.
+ * According to Linus Torvalds, this is not true. He considers the values
+ * in /proc as being in architecture-dependant units that have no relation
+ * to the kernel clock tick rate. Examination of the kernel source code
+ * reveals that opinion as wishful thinking.
+ *
+ * In any case, we need the HZ constant as used in /proc. (the real HZ value
+ * may differ, but we don't care) There are several ways we could get HZ:
+ *
+ * 1. Include the kernel header file. If it changes, recompile this library.
+ * 2. Use the sysconf() function. When HZ changes, recompile the C library!
+ * 3. Ask the kernel. This is obviously correct...
+ *
+ * Linus Torvalds won't let us ask the kernel, because he thinks we should
+ * not know the HZ value. Oh well, we don't have to listen to him.
+ * Someone smuggled out the HZ value. :-)
+ *
+ * This code should work fine, even if Linus fixes the kernel to match his
+ * stated behavior. The code only fails in case of a partial conversion.
+ *
+ */
+unsigned long Hertz;
+static void init_Hertz_value(void) __attribute__((constructor));
+static void init_Hertz_value(void){
+ unsigned long user_j, nice_j, sys_j, other_j; /* jiffies (clock ticks) */
+ double up_1, up_2, seconds;
+ unsigned long jiffies, h;
+ smp_num_cpus = sysconf(_SC_NPROCESSORS_CONF);
+ if(smp_num_cpus==-1) smp_num_cpus=1;
+ do{
+ FILE_TO_BUF(UPTIME_FILE,uptime_fd); sscanf(buf, "%lf", &up_1);
+ /* uptime(&up_1, NULL); */
+ FILE_TO_BUF(STAT_FILE,stat_fd);
+ sscanf(buf, "cpu %lu %lu %lu %lu", &user_j, &nice_j, &sys_j, &other_j);
+ FILE_TO_BUF(UPTIME_FILE,uptime_fd); sscanf(buf, "%lf", &up_2);
+ /* uptime(&up_2, NULL); */
+ } while((long)( (up_2-up_1)*1000.0/up_1 )); /* want under 0.1% error */
+ jiffies = user_j + nice_j + sys_j + other_j;
+ seconds = (up_1 + up_2) / 2;
+ h = (unsigned long)( (double)jiffies/seconds/smp_num_cpus );
+ /* actual values used by 2.4 kernels: 32 64 100 128 1000 1024 1200 */
+ switch(h){
+ case 30 ... 34 : Hertz = 32; break; /* ia64 emulator */
+ case 48 ... 52 : Hertz = 50; break;
+ case 58 ... 62 : Hertz = 60; break;
+ case 63 ... 65 : Hertz = 64; break; /* StrongARM /Shark */
+ case 95 ... 105 : Hertz = 100; break; /* normal Linux */
+ case 124 ... 132 : Hertz = 128; break; /* MIPS, ARM */
+ case 195 ... 204 : Hertz = 200; break; /* normal << 1 */
+ case 253 ... 260 : Hertz = 256; break;
+ case 393 ... 408 : Hertz = 400; break; /* normal << 2 */
+ case 790 ... 808 : Hertz = 800; break; /* normal << 3 */
+ case 990 ... 1010 : Hertz = 1000; break; /* ARM */
+ case 1015 ... 1035 : Hertz = 1024; break; /* Alpha, ia64 */
+ case 1180 ... 1220 : Hertz = 1200; break; /* Alpha */
+ default:
+#ifdef HZ
+ Hertz = (unsigned long)HZ; /* <asm/param.h> */
+#else
+ /* If 32-bit or big-endian (not Alpha or ia64), assume HZ is 100. */
+ Hertz = (sizeof(long)==sizeof(int) || htons(999)==999) ? 100UL : 1024UL;
+#endif
+ fprintf(stderr, "Unknown HZ value! (%ld) Assume %ld.\n", h, Hertz);
+ }
+}
+
+/***********************************************************************
+ * The /proc filesystem calculates idle=jiffies-(user+nice+sys) and we
+ * recover jiffies by adding up the 4 numbers we are given. SMP kernels
+ * (as of pre-2.4 era) can report idle time going backwards, perhaps due
+ * to non-atomic reads and updates. There is no locking for these values.
+ */
+#ifndef NAN
+#define NAN (-0.0)
+#endif
+#define JT unsigned long
+void four_cpu_numbers(double *uret, double *nret, double *sret, double *iret){
+ double tmp_u, tmp_n, tmp_s, tmp_i;
+ double scale; /* scale values to % */
+ static JT old_u, old_n, old_s, old_i;
+ JT new_u, new_n, new_s, new_i;
+ JT ticks_past; /* avoid div-by-0 by not calling too often :-( */
+
+ FILE_TO_BUF(STAT_FILE,stat_fd);
+ sscanf(buf, "cpu %lu %lu %lu %lu", &new_u, &new_n, &new_s, &new_i);
+ ticks_past = (new_u+new_n+new_s+new_i)-(old_u+old_n+old_s+old_i);
+ if(ticks_past){
+ scale = 100.0 / (double)ticks_past;
+ tmp_u = ( (double)new_u - (double)old_u ) * scale;
+ tmp_n = ( (double)new_n - (double)old_n ) * scale;
+ tmp_s = ( (double)new_s - (double)old_s ) * scale;
+ tmp_i = ( (double)new_i - (double)old_i ) * scale;
+ }else{
+ tmp_u = NAN;
+ tmp_n = NAN;
+ tmp_s = NAN;
+ tmp_i = NAN;
+ }
+ SET_IF_DESIRED(uret, tmp_u);
+ SET_IF_DESIRED(nret, tmp_n);
+ SET_IF_DESIRED(sret, tmp_s);
+ SET_IF_DESIRED(iret, tmp_i);
+ old_u=new_u;
+ old_n=new_n;
+ old_s=new_s;
+ old_i=new_i;
+}
+#undef JT
+
+/***********************************************************************/
+void loadavg(double *av1, double *av5, double *av15) {
+ double avg_1=0, avg_5=0, avg_15=0;
+
+ FILE_TO_BUF(LOADAVG_FILE,loadavg_fd);
+ if (sscanf(buf, "%lf %lf %lf", &avg_1, &avg_5, &avg_15) < 3) {
+ fprintf(stderr, "bad data in " LOADAVG_FILE "\n");
+ exit(1);
+ }
+ SET_IF_DESIRED(av1, avg_1);
+ SET_IF_DESIRED(av5, avg_5);
+ SET_IF_DESIRED(av15, avg_15);
+}
+
+/***********************************************************************/
+/*
+ * Copyright 1999 by Albert Cahalan; all rights reserved.
+ * This file may be used subject to the terms and conditions of the
+ * GNU Library General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+
+typedef struct mem_table_struct {
+ const char *name; /* memory type name */
+ const unsigned *slot; /* slot in return struct */
+} mem_table_struct;
+
+static int compare_mem_table_structs(const void *a, const void *b){
+ return strcmp(((mem_table_struct*)a)->name,((mem_table_struct*)b)->name);
+}
+
+/* example data, following junk, with comments added:
+ *
+ * MemTotal: 61768 kB old
+ * MemFree: 1436 kB old
+ * MemShared: 0 kB old (now always zero; not calculated)
+ * Buffers: 1312 kB old
+ * Cached: 20932 kB old
+ * Active: 12464 kB new
+ * Inact_dirty: 7772 kB new
+ * Inact_clean: 2008 kB new
+ * Inact_target: 0 kB new
+ * HighTotal: 0 kB
+ * HighFree: 0 kB
+ * LowTotal: 61768 kB
+ * LowFree: 1436 kB
+ * SwapTotal: 122580 kB old
+ * SwapFree: 60352 kB old
+ */
+
+/* obsolete */
+unsigned kb_main_shared;
+/* old but still kicking -- the important stuff */
+unsigned kb_main_buffers;
+unsigned kb_main_cached;
+unsigned kb_main_free;
+unsigned kb_main_total;
+unsigned kb_swap_free;
+unsigned kb_swap_total;
+/* recently introduced */
+unsigned kb_high_free;
+unsigned kb_high_total;
+unsigned kb_low_free;
+unsigned kb_low_total;
+/* 2.4.xx era */
+unsigned kb_active;
+unsigned kb_inact_dirty;
+unsigned kb_inact_clean;
+unsigned kb_inact_target;
+/* derived values */
+unsigned kb_swap_used;
+unsigned kb_main_used;
+
+void meminfo(void){
+ char namebuf[16]; /* big enough to hold any row name */
+ mem_table_struct findme = { namebuf, NULL};
+ mem_table_struct *found;
+ char *head;
+ char *tail;
+ static const mem_table_struct mem_table[] = {
+ {"Active", &kb_active},
+ {"Buffers", &kb_main_buffers},
+ {"Cached", &kb_main_cached},
+ {"HighFree", &kb_high_free},
+ {"HighTotal", &kb_high_total},
+ {"Inact_clean", &kb_inact_clean},
+ {"Inact_dirty", &kb_inact_dirty},
+ {"Inact_target", &kb_inact_target},
+ {"LowFree", &kb_low_free},
+ {"LowTotal", &kb_low_total},
+ {"MemFree", &kb_main_free},
+ {"MemShared", &kb_main_shared},
+ {"MemTotal", &kb_main_total},
+ {"SwapFree", &kb_swap_free},
+ {"SwapTotal", &kb_swap_total}
+ };
+ const int mem_table_count = sizeof(mem_table)/sizeof(mem_table_struct);
+
+ FILE_TO_BUF(MEMINFO_FILE,meminfo_fd);
+
+ head = buf;
+ for(;;){
+ tail = strchr(head, ':');
+ if(!tail) break;
+ *tail = '\0';
+ if(strlen(head) >= sizeof(namebuf)){
+ head = tail+1;
+ goto nextline;
+ }
+ strcpy(namebuf,head);
+ found = bsearch(&findme, mem_table, mem_table_count,
+ sizeof(mem_table_struct), compare_mem_table_structs
+ );
+ head = tail+1;
+ if(!found) goto nextline;
+ *(found->slot) = strtoul(head,&tail,10);
+nextline:
+ tail = strchr(head, '\n');
+ if(!tail) break;
+ head = tail+1;
+ }
+ if(!kb_low_total){ /* low==main except with large-memory support */
+ kb_low_total = kb_main_total;
+ kb_low_free = kb_main_free;
+ }
+ kb_swap_used = kb_swap_total - kb_swap_free;
+ kb_main_used = kb_main_total - kb_main_free;
+}
--- /dev/null
+#ifndef SYSINFO_H
+#define SYSINFO_H
+
+extern unsigned long Hertz; /* clock tick frequency */
+extern long smp_num_cpus; /* number of CPUs */
+
+#define JT double
+extern void four_cpu_numbers(JT *uret, JT *nret, JT *sret, JT *iret);
+#undef JT
+
+extern int uptime (double *uptime_secs, double *idle_secs);
+extern void loadavg(double *av1, double *av5, double *av15);
+
+
+/* obsolete */
+extern unsigned kb_main_shared;
+/* old but still kicking -- the important stuff */
+extern unsigned kb_main_buffers;
+extern unsigned kb_main_cached;
+extern unsigned kb_main_free;
+extern unsigned kb_main_total;
+extern unsigned kb_swap_free;
+extern unsigned kb_swap_total;
+/* recently introduced */
+extern unsigned kb_high_free;
+extern unsigned kb_high_total;
+extern unsigned kb_low_free;
+extern unsigned kb_low_total;
+/* 2.4.xx era */
+extern unsigned kb_active;
+extern unsigned kb_inact_dirty;
+extern unsigned kb_inact_clean;
+extern unsigned kb_inact_target;
+/* derived values */
+extern unsigned kb_swap_used;
+extern unsigned kb_main_used;
+
+extern void meminfo(void);
+
+#endif /* SYSINFO_H */
--- /dev/null
+/* for oldps.c and proc/compare.c */
+struct tree_node {
+ proc_t *proc;
+ pid_t pid;
+ pid_t ppid;
+ char *line;
+ char *cmd;
+ char **cmdline;
+ char **environ;
+ int children;
+ int maxchildren;
+ int *child;
+ int have_parent;
+};
+
--- /dev/null
+/* Suite version information for procps utilities
+ * Copyright (c) 1995 Martin Schulze <joey@infodrom.north.de>
+ * Ammended by cblake to only export the function symbol.
+ * Redistributable under the terms of the
+ * GNU Library General Public License; see COPYING
+ */
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifdef MINORVERSION
+char procps_version[] = "procps version " VERSION "." SUBVERSION "." MINORVERSION;
+#else
+char procps_version[] = "procps version " VERSION "." SUBVERSION;
+#endif
+
+void display_version(void) {
+ fprintf(stdout, "%s\n", procps_version);
+}
+
+/* Linux kernel version information for procps utilities
+ * Copyright (c) 1996 Charles Blake <cblake@bbn.com>
+ */
+#include <sys/utsname.h>
+
+#define LINUX_VERSION(x,y,z) (0x10000*(x) + 0x100*(y) + z)
+
+int linux_version_code = 0;
+
+static void init_Linux_version(void) __attribute__((constructor));
+static void init_Linux_version(void) {
+ static struct utsname uts;
+ int x = 0, y = 0, z = 0; /* cleared in case sscanf() < 3 */
+
+ if (linux_version_code) return;
+ if (uname(&uts) == -1) /* failure implies impending death */
+ exit(1);
+ if (sscanf(uts.release, "%d.%d.%d", &x, &y, &z) < 3)
+ fprintf(stderr, /* *very* unlikely to happen by accident */
+ "Non-standard uts for running kernel:\n"
+ "release %s=%d.%d.%d gives version code %d\n",
+ uts.release, x, y, z, LINUX_VERSION(x,y,z));
+ linux_version_code = LINUX_VERSION(x, y, z);
+}
--- /dev/null
+#ifndef PROC_VERSION_H
+#define PROC_VERSION_H
+
+/* Suite version information for procps utilities
+ * Copyright (c) 1995 Martin Schulze <joey@infodrom.north.de>
+ * Linux kernel version information for procps utilities
+ * Copyright (c) 1996 Charles Blake <cblake@bbn.com>
+ * Distributable under the terms of the GNU Library General Public License
+ */
+
+extern void display_version(void); /* display suite version */
+extern char procps_version[]; /* global buf for suite version */
+
+extern int linux_version_code; /* runtime version of LINUX_VERSION_CODE
+ in /usr/include/linux/version.h */
+
+/* Convenience macros for composing/decomposing version codes */
+#define LINUX_VERSION(x,y,z) (0x10000*(x) + 0x100*(y) + z)
+#define LINUX_VERSION_MAJOR(x) (((x)>>16) & 0xFF)
+#define LINUX_VERSION_MINOR(x) (((x)>> 8) & 0xFF)
+#define LINUX_VERSION_PATCH(x) ( (x) & 0xFF)
+
+#endif /* PROC_VERSION_H */
--- /dev/null
+/* This is a trivial uptime program. I hereby release this program
+ * into the public domain. I disclaim any responsibility for this
+ * program --- use it at your own risk. (as if there were any.. ;-)
+ * -michaelkjohnson (johnsonm@sunsite.unc.edu)
+ *
+ * Modified by Larry Greenfield to give a more traditional output,
+ * count users, etc. (greenfie@gauss.rutgers.edu)
+ *
+ * Modified by mkj again to fix a few tiny buglies.
+ *
+ * Modified by J. Cowley to add printing the uptime message to a
+ * string (for top) and to optimize file handling. 19 Mar 1993.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <time.h>
+#include <utmp.h>
+#include <sys/ioctl.h>
+#include "proc/whattime.h"
+#include "proc/sysinfo.h"
+
+static char buf[128];
+static double av[3];
+
+char *sprint_uptime(void) {
+ struct utmp *utmpstruct;
+ int upminutes, uphours, updays;
+ int pos;
+ struct tm *realtime;
+ time_t realseconds;
+ int numuser;
+ double uptime_secs, idle_secs;
+
+/* first get the current time */
+
+ time(&realseconds);
+ realtime = localtime(&realseconds);
+ pos = sprintf(buf, " %2d:%02d%s ",
+ realtime->tm_hour%12 ? realtime->tm_hour%12 : 12,
+ realtime->tm_min, realtime->tm_hour > 11 ? "pm" : "am");
+
+/* read and calculate the amount of uptime */
+
+ uptime(&uptime_secs, &idle_secs);
+
+ updays = (int) uptime_secs / (60*60*24);
+ strcat (buf, "up ");
+ pos += 3;
+ if (updays)
+ pos += sprintf(buf + pos, "%d day%s, ", updays, (updays != 1) ? "s" : "");
+ upminutes = (int) uptime_secs / 60;
+ uphours = upminutes / 60;
+ uphours = uphours % 24;
+ upminutes = upminutes % 60;
+ if(uphours)
+ pos += sprintf(buf + pos, "%2d:%02d, ", uphours, upminutes);
+ else
+ pos += sprintf(buf + pos, "%d min, ", upminutes);
+
+/* count the number of users */
+
+ numuser = 0;
+ setutent();
+ while ((utmpstruct = getutent())) {
+ if ((utmpstruct->ut_type == USER_PROCESS) &&
+ (utmpstruct->ut_name[0] != '\0'))
+ numuser++;
+ }
+ endutent();
+
+ pos += sprintf(buf + pos, "%2d user%s, ", numuser, numuser == 1 ? "" : "s");
+
+ loadavg(&av[0], &av[1], &av[2]);
+
+ pos += sprintf(buf + pos, " load average: %.2f, %.2f, %.2f",
+ av[0], av[1], av[2]);
+
+ return buf;
+}
+
+void print_uptime(void)
+{
+ printf("%s\n", sprint_uptime());
+}
--- /dev/null
+/* whattime.h --- see whattime.c for explanation */
+
+#ifndef __WHATTIME_H
+#define __WHATTIME_H
+
+extern void print_uptime(void);
+extern char *sprint_uptime(void);
+
+#endif
--- /dev/null
+Begin3
+Title: procps
+Version: 010114
+Entered-date: 14JAN01
+Description: Procps is a library which parses the textual /proc filesystem
+ and a suite of utilites which use the library.
+Keywords: procps /proc libproc
+ ps uptime tload free w top vmstat watch skill snice kill pgrep pkill
+Author: Michael K. Johnson, Charles Blake, Albert Cahalan, many others.
+Maintained-by: various <acahalan@cs.uml.edu>
+Primary-site: http://www.cs.uml.edu/~acahalan/procps/
+ 185kB procps-010114.tar.gz
+Alternate-site: http://www.debian.org/Packages/unstable/base/procps.html
+ 185kB procps-010114.tar.gz
+Copying-policy: mixed
+End
--- /dev/null
+Summary: Utilities for monitoring your system and processes on your system.
+Name: procps
+%define major_version 2
+%define minor_version 0
+%define revision 7
+%define version %{major_version}.%{minor_version}.%{revision}
+Version: %{version}
+Release: 1
+Copyright: GPL
+Group: Applications/System
+Source: ftp://people.redhat.com/johnsonm/procps/procps-%{version}.tar.gz
+BuildRoot: /var/tmp/procps-root
+
+%package X11
+Group: Applications/System
+Summary: X based process monitoring utilities.
+
+%description
+The procps package contains a set of system utilities which provide
+system information. Procps includes ps, free, sysctl, skill, snice,
+tload, top, uptime, vmstat, w, and watch. The ps command displays
+a snapshot of running processes. The top command provides a
+repetitive update of the statuses of running processes. The free
+command displays the amounts of free and used memory on your system.
+Sysctl is a simple program for managing system configuration entries.
+The skill command sends a terminate command (or another
+specified signal) to a specified set of processes. The snice
+command is used to change the scheduling priority of specified
+processes. The tload command prints a graph of the current system
+load average to a specified tty. The uptime command displays the
+current time, how long the system has been running, how many users
+are logged on and system load averages for the past one, five and
+fifteen minutes. The w command displays a list of the users who
+are currently logged on and what they're running. The watch program
+watches a running program. The vmstat command displays virtual
+memory statistics about processes, memory, paging, block I/O, traps
+and CPU activity.
+
+%description X11
+The procps-X11 package contains the XConsole shell script, a backwards
+compatibility wrapper for the xconsole program.
+
+%prep
+%setup
+
+%build
+PATH=/usr/X11R6/bin:$PATH
+
+make CC="gcc $RPM_OPT_FLAGS" LDFLAGS=-s
+
+%install
+rm -rf $RPM_BUILD_ROOT
+mkdir -p $RPM_BUILD_ROOT/bin $RPM_BUILD_ROOT/usr/bin $RPM_BUILD_ROOT/sbin
+mkdir -p $RPM_BUILD_ROOT/usr/man/man1 $RPM_BUILD_ROOT/usr/man/man8
+mkdir -p $RPM_BUILD_ROOT/lib $RPM_BUILD_ROOT/usr/X11R6/bin
+
+make DESTDIR=$RPM_BUILD_ROOT OWNERGROUP= MANDIR=/usr/share/man install
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+%post
+# add libproc to the cache
+/sbin/ldconfig
+# remove obsolete files
+rm -f /etc/psdevtab /etc/psdatabase
+
+%files
+%defattr(0644,root,root,755)
+%attr(0644,root,root) %config(missingok) /etc/X11/applnk/Utilities/top.desktop
+%doc NEWS BUGS TODO
+%attr(755,root,root) /lib/libproc.so.2.0.7
+%attr(555,root,root) /bin/ps
+%attr(555,root,root) /sbin/sysctl
+%attr(555,root,root) /usr/bin/oldps
+%attr(555,root,root) /usr/bin/uptime
+%attr(555,root,root) /usr/bin/tload
+%attr(555,root,root) /usr/bin/free
+%attr(555,root,root) /usr/bin/w
+%attr(555,root,root) /usr/bin/top
+%attr(555,root,root) /usr/bin/vmstat
+%attr(555,root,root) /usr/bin/watch
+%attr(555,root,root) /usr/bin/skill
+%attr(555,root,root) /usr/bin/snice
+%attr(555,root,root) /usr/bin/pgrep
+%attr(555,root,root) /usr/bin/pkill
+
+%attr(0644,root,root) /usr/man/man1/free.1
+%attr(0644,root,root) /usr/man/man1/ps.1
+%attr(0644,root,root) /usr/man/man1/oldps.1
+%attr(0644,root,root) /usr/man/man1/sessreg.1
+%attr(0644,root,root) /usr/man/man1/skill.1
+%attr(0644,root,root) /usr/man/man1/snice.1
+%attr(0644,root,root) /usr/man/man1/tload.1
+%attr(0644,root,root) /usr/man/man1/top.1
+%attr(0644,root,root) /usr/man/man1/uptime.1
+%attr(0644,root,root) /usr/man/man1/w.1
+%attr(0644,root,root) /usr/man/man1/watch.1
+%attr(0644,root,root) /usr/man/man1/pgrep.1
+%attr(0644,root,root) /usr/man/man1/pkill.1
+%attr(0644,root,root) /usr/man/man8/vmstat.8
+%attr(0644,root,root) /usr/man/man8/sysctl.8
+
+%files X11
+%attr(0755,root,root) /usr/X11R6/bin/XConsole
--- /dev/null
+diff -Naur procps-2.0.6/ps/.cvsignore procps-2.0.7/ps/.cvsignore
+--- procps-2.0.6/ps/.cvsignore Wed Dec 31 19:00:00 1969
++++ procps-2.0.7/ps/.cvsignore Fri Jul 14 16:45:01 2000
+@@ -0,0 +1 @@
++ps
--- /dev/null
+ GNU LIBRARY GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1991 Free Software Foundation, Inc.
+ 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+[This is the first released version of the library GPL. It is
+ numbered 2 because it goes with version 2 of the ordinary GPL.]
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+Licenses are intended to guarantee your freedom to share and change
+free software--to make sure the software is free for all its users.
+
+ This license, the Library General Public License, applies to some
+specially designated Free Software Foundation software, and to any
+other libraries whose authors decide to use it. You can use it for
+your libraries, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+ To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if
+you distribute copies of the library, or if you modify it.
+
+ For example, if you distribute copies of the library, whether gratis
+or for a fee, you must give the recipients all the rights that we gave
+you. You must make sure that they, too, receive or can get the source
+code. If you link a program with the library, you must provide
+complete object files to the recipients so that they can relink them
+with the library, after making changes to the library and recompiling
+it. And you must show them these terms so they know their rights.
+
+ Our method of protecting your rights has two steps: (1) copyright
+the library, and (2) offer you this license which gives you legal
+permission to copy, distribute and/or modify the library.
+
+ Also, for each distributor's protection, we want to make certain
+that everyone understands that there is no warranty for this free
+library. If the library is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original
+version, so that any problems introduced by others will not reflect on
+the original authors' reputations.
+\f
+ Finally, any free program is threatened constantly by software
+patents. We wish to avoid the danger that companies distributing free
+software will individually obtain patent licenses, thus in effect
+transforming the program into proprietary software. To prevent this,
+we have made it clear that any patent must be licensed for everyone's
+free use or not licensed at all.
+
+ Most GNU software, including some libraries, is covered by the ordinary
+GNU General Public License, which was designed for utility programs. This
+license, the GNU Library General Public License, applies to certain
+designated libraries. This license is quite different from the ordinary
+one; be sure to read it in full, and don't assume that anything in it is
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+
+ The reason we have a separate public license for some libraries is that
+they blur the distinction we usually make between modifying or adding to a
+program and simply using it. Linking a program with a library, without
+changing the library, is in some sense simply using the library, and is
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+a textual and legal sense, the linked executable is a combined work, a
+derivative of the original library, and the ordinary General Public License
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+
+ Because of this blurred distinction, using the ordinary General
+Public License for libraries did not effectively promote software
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+concluded that weaker conditions might promote sharing better.
+
+ However, unrestricted linking of non-free programs would deprive the
+users of those programs of all benefit from the free status of the
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+preserving your freedom as a user of such programs to change the free
+libraries that are incorporated in them. (We have not seen how to achieve
+this as regards changes in header files, but we have achieved it as regards
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+will lead to faster development of free libraries.
+
+ The precise terms and conditions for copying, distribution and
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+former contains code derived from the library, while the latter only
+works together with the library.
+
+ Note that it is possible for a library to be covered by the ordinary
+General Public License rather than by this special one.
+\f
+ GNU LIBRARY GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License Agreement applies to any software library which
+contains a notice placed by the copyright holder or other authorized
+party saying it may be distributed under the terms of this Library
+General Public License (also called "this License"). Each licensee is
+addressed as "you".
+
+ A "library" means a collection of software functions and/or data
+prepared so as to be conveniently linked with application programs
+(which use some of those functions and data) to form executables.
+
+ The "Library", below, refers to any such software library or work
+which has been distributed under these terms. A "work based on the
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+school, if any, to sign a "copyright disclaimer" for the library, if
+necessary. Here is a sample; alter the names:
+
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+ library `Frob' (a library for tweaking knobs) written by James Random Hacker.
+
+ <signature of Ty Coon>, 1 April 1990
+ Ty Coon, President of Vice
+
+That's all there is to it!
--- /dev/null
+Warning:
+
+This code must corrctly handle lots of picky little details to meet
+the Unix98 standard while simultaneously being as compatible as
+possible with the original Linux ps. Don't "fix" something without
+considering the impact on all the special-case code. For example,
+the "tty" format _must_ use "TT" as the header, even though the SysV
+output formats _must_ use "TTY".
+
+File overview:
+
+display.c main(), debug code, iterates over processes
+escape.c Does stuff like \202 and < to command and environment.
+global.c Data + code to init it.
+help.c Help message.
+output.c Giant tables and lots of output functions.
+parser.c Initial command parsing.
+select.c want_this_proc() checks a process against flags & lists
+sortformat.c Parses sort & format specifier lists. Picks output format.
+stacktrace.c Debug code, not normally used.
+../proc/* Library used to gather data.
+regression Regression tests that ought to be run.
+common.h Lots of interesting stuff.
+Makefile Makefile
+p Script used to test ps when the library is not installed.
+utf Empty file used to test "ps ut?" unmangling behavior.
+ps.1 Man page.
+
+Compiling:
+
+Whatever you do, don't trust the Makefiles. They are severely broken.
+You can touch top.h and top won't be recompiled, or you can change
+library files and discover that the library and programs won't be
+recompiled.
+
+Operation:
+
+Unless the personality forces BSD parsing, parser.c tries to parse the
+command line as a mixed BSD+SysV+Gnu mess. On failure, BSD parsing is
+attempted. If BSD parsing fails _after_ SysV parsing has been attempted,
+the error message comes from the original SysV parse.
+
+Control goes to sortformat.c, which must pick apart ambiguous options
+like "O". Failure can reset the whole program and set PER_FORCE_BSD,
+which means a second trip through parser.c and sortformat.c.
+
+The choice of output format happens in sortformat.c. There is a switch()
+with all the valid format_flags combinations. The SysV and default
+options are NULL (unless overridden by personality), which causes a
+trip through SysV output format generation hackery. Note that the
+default format always goes through there, even if it is for BSD.
+Formats that came from the switch() (generally BSD, plus overrides)
+get mangled a bit to support various SysV output modifiers.
--- /dev/null
+all: ps
+
+ps: escape.o global.o help.o select.o sortformat.o output.o parser.o display.o
+ $(CC) -o ps escape.o global.o help.o select.o sortformat.o output.o parser.o display.o -L../proc -lproc
+
+# This just adds the stacktrace code
+debug: escape.o global.o help.o select.o sortformat.o output.o parser.o display.o stacktrace.o
+ $(CC) -o ps escape.o global.o help.o select.o sortformat.o output.o parser.o display.o stacktrace.o -L../proc -lproc -lefence
+
+sortformat.o: sortformat.c common.h
+
+global.o: global.c common.h
+
+escape.o: escape.c
+
+help.o: help.c
+
+select.o: select.c common.h
+
+output.o: output.c common.h
+
+parser.o: parser.c common.h
+
+display.o: display.c common.h
+
+stacktrace.o: stacktrace.c
+
+
+install: ps
+ install $(OWNERGROUP) --mode a=rx --strip ps $(BINDIR)/ps
+ install $(OWNERGROUP) --mode a=r ps.1 $(MAN1DIR)/ps.1
+ -rm -f $(DESTDIR)/var/catman/cat1/ps.1.gz $(DESTDIR)/var/man/cat1/ps.1.gz
+
+clean:
+ rm -f *.o DEADJOE *~ core ps gmon.out
--- /dev/null
+Initially I only want to translate the --help output and man page.
+Common error messages would be next on the list. I want to avoid
+run-time overhead and bloat.
+
+Translations of the --help output should not be longer than 22 lines long.
+Feel free to leave out the less useful options to save space. (not even
+the English help text has all the options)
+
+I think these are the most important options:
+
+*** selection ***
+-C by command name list
+-G by real group ID list (supports names)
+-U by real user ID list (supports names)
+-u by effective user ID list (supports names)
+-e all processes
+-p by process ID list
+
+*** output ***
+--no-heading No header line.
+-o,o user-defined output
+-j,j job control format
+-l,l long format
+-f full format
+s signal format
+u user-oriented format
+--forest ASCII art forest (process heirarchy)
+c show true command name
--- /dev/null
+/*
+ * Copyright 1998 by Albert Cahalan; all rights resered.
+ * This file may be used subject to the terms and conditions of the
+ * GNU Library General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+
+#ifndef PROCPS_PS_H
+#define PROCPS_PS_H
+
+#include "../proc/readproc.h"
+#include <asm/page.h> /* looks safe for glibc, we need PAGE_SIZE */
+
+#if 0
+#define trace(args...) printf(## args)
+#else
+#define trace(args...)
+#endif
+
+
+/***************** GENERAL DEFINE ********************/
+
+
+/* selection list */
+#define SEL_RUID 1
+#define SEL_EUID 2
+#define SEL_SUID 3
+#define SEL_FUID 4
+#define SEL_RGID 5
+#define SEL_EGID 6
+#define SEL_SGID 7
+#define SEL_FGID 8
+#define SEL_PGRP 9
+#define SEL_PID 10
+#define SEL_TTY 11
+#define SEL_SESS 12
+#define SEL_COMM 13
+
+/* Since an enum could be smashed by a #define, it would be bad. */
+#define U98 0 /* Unix98 standard */ /* This must be 0 */
+#define XXX 1 /* Common extension */
+#define DEC 2 /* Digital Unix */
+#define AIX 3 /* AIX */
+#define SCO 4 /* SCO */
+#define LNX 5 /* Linux original :-) */
+#define BSD 6 /* FreeBSD and OpenBSD */
+#define SUN 7 /* SunOS 5 (Solaris) */
+#define HPU 8 /* HP-UX */
+#define SGI 9 /* Irix */
+#define SOE 10 /* IBM's S/390 OpenEdition */
+
+/*
+ * Must not overflow the output buffer:
+ * 32 pages for env+cmd
+ * 8 kB pages on the Alpha
+ * 5 chars for "\001 "
+ * plus some slack for other stuff
+ * That is about 1.3 MB on the Alpha
+ *
+ * This isn't good enough for setuid. If anyone cares, mmap() over the
+ * last page with something unwriteable.
+ */
+
+/* maximum escape expansion is 6, for " */
+#define ESC_STRETCH 6
+/* output buffer size */
+#define OUTBUF_SIZE (32*PAGE_SIZE*ESC_STRETCH + 8*PAGE_SIZE)
+/* spaces used to right-justify things */
+#define SPACE_AMOUNT (int)(PAGE_SIZE)
+
+/******************* PS DEFINE *******************/
+
+/* personality control flags */
+#define PER_BROKEN_o 0x0001
+#define PER_BSD_h 0x0002
+#define PER_BSD_m 0x0004
+#define PER_CUMUL_MARKED 0x0008
+#define PER_FORCE_BSD 0x0010
+#define PER_GOOD_o 0x0020
+#define PER_OLD_m 0x0040
+#define PER_NO_DEFAULT_g 0x0080
+#define PER_ZAP_ADDR 0x0100
+#define PER_SANE_USER 0x0200
+#define PER_IRIX_l 0x0400
+
+/* Simple selections by bit mask */
+#define SS_B_x 0x01
+#define SS_B_g 0x02
+#define SS_U_d 0x04
+#define SS_U_a 0x08
+#define SS_B_a 0x10
+
+/* predefined format flags such as: -l -f l u s -j */
+#define FF_Uf 0x0001 /* -f */
+#define FF_Uj 0x0002 /* -j */
+#define FF_Ul 0x0004 /* -l */
+#define FF_Bj 0x0008 /* j */
+#define FF_Bl 0x0010 /* l */
+#define FF_Bs 0x0020 /* s */
+#define FF_Bu 0x0040 /* u */
+#define FF_Bv 0x0080 /* v */
+#define FF_LX 0x0100 /* X */
+#define FF_Lm 0x0200 /* m */ /* overloaded: threads, sort, format */
+
+/* predefined format modifier flags such as: -l -f l u s -j */
+#define FM_c 0x0001 /* -c */
+#define FM_j 0x0002 /* -j */ /* only set when !sysv_j_format */
+#define FM_y 0x0004 /* -y */
+#define FM_L 0x0008 /* -L */
+#define FM_P 0x0010 /* -P */
+#define FM_M 0x0020 /* -M */
+#define FM_T 0x0040 /* -T */
+#define FM_F 0x0080 /* -F */ /* -F also sets the regular -f flags */
+
+/* sorting & formatting */
+/* U,B,G is Unix,BSD,Gnu and then there is the option itself */
+#define SF_U_O 1
+#define SF_U_o 2
+#define SF_B_O 3
+#define SF_B_o 4
+#define SF_B_m 5 /* overloaded: threads, sort, format */
+#define SF_G_sort 6
+#define SF_G_format 7
+
+/* headers */
+#define HEAD_SINGLE 0 /* default, must be 0 */
+#define HEAD_NONE 1
+#define HEAD_MULTI 2
+
+
+/********************** GENERAL TYPEDEF *******************/
+
+/* Other fields that might be useful:
+ *
+ * char *name; user-defined column name (format specification)
+ * int reverse; sorting in reverse (sort specification)
+ *
+ * name in place of u
+ * reverse in place of n
+ */
+
+typedef union sel_union {
+ pid_t pid;
+ uid_t uid;
+ gid_t gid;
+ dev_t tty;
+ char cmd[8]; /* this is _not_ \0 terminated */
+} sel_union;
+
+typedef struct selection_node {
+ struct selection_node *next;
+ sel_union *u; /* used if selection type has a list of values */
+ int n; /* used if selection type has a list of values */
+ int typecode;
+} selection_node;
+
+typedef struct sort_node {
+ struct sort_node *next;
+ int (*sr)(const proc_t* P, const proc_t* Q); /* sort function */
+ int reverse; /* can sort backwards */
+ int typecode;
+} sort_node;
+
+typedef struct format_node {
+ struct format_node *next;
+ char *name; /* user can override default name */
+ int (*pr)(void); /* print function */
+/* int (* const sr)(const proc_t* P, const proc_t* Q); */ /* sort function */
+ int width;
+ int pad;
+ int vendor; /* Vendor that invented this */
+ int flags;
+ int typecode;
+} format_node;
+
+typedef struct format_struct {
+ const char *spec; /* format specifier */
+ const char *head; /* default header in the POSIX locale */
+ int (* const pr)(void); /* print function */
+ int (* const sr)(const proc_t* P, const proc_t* Q); /* sort function */
+ const int width;
+ const int pad; /* could be second width */
+ const int vendor; /* Where does this come from? */
+ const int flags;
+} format_struct;
+
+/* though ps-specific, needed by general file */
+typedef struct macro_struct {
+ const char *spec; /* format specifier */
+ const char *head; /* default header in the POSIX locale */
+} macro_struct;
+
+/**************** PS TYPEDEF ***********************/
+
+typedef struct aix_struct {
+ const int desc; /* 1-character format code */
+ const char *spec; /* format specifier */
+ const char *head; /* default header in the POSIX locale */
+} aix_struct;
+
+typedef struct shortsort_struct {
+ const int desc; /* 1-character format code */
+ const char *spec; /* format specifier */
+} shortsort_struct;
+
+/* Save these options for later: -o o -O O --format --sort */
+typedef struct sf_node {
+ struct sf_node *next; /* next arg */
+ format_node *f_cooked; /* convert each arg alone, then merge */
+ sort_node *s_cooked; /* convert each arg alone, then merge */
+ char *sf;
+ int sf_code;
+} sf_node;
+
+
+/*********************** GENERAL GLOBALS *************************/
+
+/* escape.c */
+extern int escape_strlist(char *dst, const char **src, size_t n);
+extern int escape_str(char *dst, const char *src, size_t n);
+extern int octal_escape_str(char *dst, const char *src, size_t n);
+extern int simple_escape_str(char *dst, const char *src, size_t n);
+
+/********************* UNDECIDED GLOBALS **************/
+
+/*
+ * fputs(3) should (as in "good behavior") return the number of
+ * characters written as it does on Digital Unix, AIX, Irix, and SunOS.
+ * I'll assume glibc 2.1 has this extremely useful feature.
+ *
+ * Note: code ported from other systems will keep breaking until
+ * the library is updated. You should patch the library itself if
+ * at all possible. (for example, distributers who build libc from
+ * source with automatic patching as part of the build process)
+ */
+
+#if defined __GLIBC__ && ((__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) || __GLIBC__ > 2)
+#warning Hopefully fputs(3) has been modernized...
+#else
+#define EMULATE_FPUTS
+#define fputs something_to_avoid_libc_troubles
+static inline int fputs(const char *s, FILE *fp){
+ return fwrite(s,1,strlen(s),fp);
+ /* return fprintf(fp, "%s", s); */
+}
+#endif
+
+/* output.c */
+extern void show_one_proc(proc_t* p);
+extern void print_format_specifiers(void);
+extern const aix_struct *search_aix_array(const int findme);
+extern const shortsort_struct *search_shortsort_array(const int findme);
+extern const format_struct *search_format_array(const char *findme);
+extern const macro_struct *search_macro_array(const char *findme);
+extern void init_output(void);
+
+/* global.c */
+extern void reset_global(void);
+
+/* global.c */
+extern int all_processes;
+extern char *bsd_j_format;
+extern char *bsd_l_format;
+extern char *bsd_s_format;
+extern char *bsd_u_format;
+extern char *bsd_v_format;
+extern int bsd_c_option;
+extern int bsd_e_option;
+extern uid_t cached_euid;
+extern dev_t cached_tty;
+extern char forest_prefix[4 * 32*1024 + 100];
+extern int forest_type;
+extern unsigned format_flags; /* -l -f l u s -j... */
+extern format_node *format_list; /* digested formatting options */
+extern unsigned format_modifiers; /* -c -j -y -P -L... */
+extern int header_gap;
+extern int header_type; /* none, single, multi... */
+extern int include_dead_children;
+extern int lines_to_next_header;
+extern int max_line_width;
+extern const char *namelist_file;
+extern int negate_selection;
+extern unsigned personality;
+extern int prefer_bsd_defaults;
+extern int running_only;
+extern int screen_cols;
+extern int screen_rows;
+extern unsigned long seconds_since_boot;
+extern selection_node *selection_list;
+extern unsigned simple_select;
+extern sort_node *sort_list;
+extern char *sysv_f_format;
+extern char *sysv_fl_format;
+extern char *sysv_j_format;
+extern char *sysv_l_format;
+extern int unix_f_option;
+extern int user_is_number;
+extern int wchan_is_number;
+
+/************************* PS GLOBALS *********************/
+
+/* sortformat.c */
+extern int defer_sf_option(const char *arg, int source);
+extern const char *process_sf_options(int localbroken);
+extern void reset_sortformat(void);
+
+/* select.c */
+extern int want_this_proc(proc_t *buf);
+extern const char *select_bits_setup(void);
+
+/* help.c */
+extern const char *help_message;
+
+/* global.c */
+extern void self_info(void);
+
+/* parser.c */
+extern int arg_parse(int argc, char *argv[]);
+
+#endif
--- /dev/null
+/*
+ * Copyright 1998 by Albert Cahalan; all rights resered.
+ * This file may be used subject to the terms and conditions of the
+ * GNU Library General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+/* username lookups */
+#include <sys/types.h>
+#include <pwd.h>
+#include <grp.h>
+
+/* major/minor number */
+#include <sys/sysmacros.h>
+
+#include <signal.h> /* catch signals */
+
+#include "common.h"
+#include "../proc/procps.h"
+#include "../proc/version.h"
+#include "../proc/readproc.h"
+#include "../proc/sysinfo.h"
+
+#ifndef SIGCHLD
+#define SIGCHLD SIGCLD
+#endif
+
+/* just reports a crash */
+static void signal_handler(int signo){
+ if(signo==SIGPIPE) _exit(0); /* "ps | head" will cause this */
+ /* fprintf() is not reentrant, but we _exit() anyway */
+ fprintf(stderr,
+ "\n\n"
+ "Signal %d caught by ps (%s).\n"
+ "Please send bug reports to <acahalan@cs.uml.edu>\n",
+ signo,
+ procps_version
+ );
+ _exit(signo+128);
+}
+
+
+#undef DEBUG
+#ifdef DEBUG
+void init_stack_trace(char *prog_name);
+
+#include <ctype.h>
+
+void hex_dump(void *vp){
+ char *charlist;
+ int i = 0;
+ int line = 45;
+ char *cp = (char *)vp;
+
+ while(line--){
+ printf("%8lx ", (unsigned long)cp);
+ charlist = cp;
+ cp += 16;
+ for(i=0; i<16; i++){
+ if((charlist[i]>31) && (charlist[i]<127)){
+ printf("%c", charlist[i]);
+ }else{
+ printf(".");
+ }
+ }
+ printf(" ");
+ for(i=0; i<16; i++) printf(" %2x",(unsigned int)((unsigned char)(charlist[i])));
+ printf("\n");
+ i=0;
+ }
+}
+
+static void show_pid(char *s, int n, sel_union *data){
+ printf("%s ", s);
+ while(--n){
+ printf("%d,", data[n].pid);
+ }
+ printf("%d\n", data[0].pid);
+}
+
+static void show_uid(char *s, int n, sel_union *data){
+ struct passwd *pw_data;
+ printf("%s ", s);
+ while(--n){
+ pw_data = getpwuid(data[n].uid);
+ if(pw_data) printf("%s,", pw_data->pw_name);
+ else printf("%d,", data[n].uid);
+ }
+ pw_data = getpwuid(data[n].uid);
+ if(pw_data) printf("%s\n", pw_data->pw_name);
+ else printf("%d\n", data[n].uid);
+}
+
+static void show_gid(char *s, int n, sel_union *data){
+ struct group *gr_data;
+ printf("%s ", s);
+ while(--n){
+ gr_data = getgrgid(data[n].gid);
+ if(gr_data) printf("%s,", gr_data->gr_name);
+ else printf("%d,", data[n].gid);
+ }
+ gr_data = getgrgid(data[n].gid);
+ if(gr_data) printf("%s\n", gr_data->gr_name);
+ else printf("%d\n", data[n].gid);
+}
+
+static void show_tty(char *s, int n, sel_union *data){
+ printf("%s ", s);
+ while(--n){
+ printf("%d:%d,", (int)major(data[n].tty), (int)minor(data[n].tty));
+ }
+ printf("%d:%d\n", (int)major(data[n].tty), (int)minor(data[n].tty));
+}
+
+static void show_cmd(char *s, int n, sel_union *data){
+ printf("%s ", s);
+ while(--n){
+ printf("%.8s,", data[n].cmd);
+ }
+ printf("%.8s\n", data[0].cmd);
+}
+
+static void arg_show(void){
+ selection_node *walk = selection_list;
+ while(walk){
+ switch(walk->typecode){
+ case SEL_RUID: show_uid("RUID", walk->n, walk->u); break;
+ case SEL_EUID: show_uid("EUID", walk->n, walk->u); break;
+ case SEL_SUID: show_uid("SUID", walk->n, walk->u); break;
+ case SEL_FUID: show_uid("FUID", walk->n, walk->u); break;
+ case SEL_RGID: show_gid("RGID", walk->n, walk->u); break;
+ case SEL_EGID: show_gid("EGID", walk->n, walk->u); break;
+ case SEL_SGID: show_gid("SGID", walk->n, walk->u); break;
+ case SEL_FGID: show_gid("FGID", walk->n, walk->u); break;
+ case SEL_PGRP: show_pid("PGRP", walk->n, walk->u); break;
+ case SEL_PID : show_pid("PID ", walk->n, walk->u); break;
+ case SEL_TTY : show_tty("TTY ", walk->n, walk->u); break;
+ case SEL_SESS: show_pid("SESS", walk->n, walk->u); break;
+ case SEL_COMM: show_cmd("COMM", walk->n, walk->u); break;
+ default: printf("Garbage typecode value!\n");
+ }
+ walk = walk->next;
+ }
+}
+
+#endif
+
+
+/***** check the header */
+/* Unix98: must not print empty header */
+static void check_headers(void){
+ format_node *walk = format_list;
+ int head_normal = 0;
+ if(header_type==HEAD_MULTI){
+ header_gap = screen_rows-1; /* true BSD */
+ return;
+ }
+ if(header_type==HEAD_NONE){
+ lines_to_next_header = -1; /* old Linux */
+ return;
+ }
+ while(walk){
+ if(!*(walk->name)){
+ walk = walk->next;
+ continue;
+ }
+ if(walk->pr){
+ head_normal++;
+ walk = walk->next;
+ continue;
+ }
+ walk = walk->next;
+ }
+ if(!head_normal) lines_to_next_header = -1; /* how UNIX does --noheader */
+}
+
+/***** fill in %CPU; not in libproc because of include_dead_children */
+static void fill_pcpu(proc_t *buf){
+ unsigned long total_time;
+ unsigned long pcpu = 0;
+ unsigned long seconds;
+
+ total_time = buf->utime + buf->stime;
+ if(include_dead_children) total_time += (buf->cutime + buf->cstime);
+ seconds = (seconds_since_boot - ((unsigned long)buf->start_time) / Hertz);
+ if(seconds) pcpu = (total_time * 1000ULL / Hertz) / seconds;
+ buf->pcpu = (pcpu > 999) ? 999 : pcpu;
+}
+
+/***** just display */
+static void simple_spew(void){
+ proc_t buf;
+ PROCTAB* ptp;
+ ptp = openproc(PROC_FILLBUG);
+ if(!ptp) {
+ fprintf(stderr, "Error: can not access /proc.\n");
+ exit(1);
+ }
+ memset(&buf, '#', sizeof(proc_t));
+ /* use "ps_" prefix to catch library mismatch */
+ while(ps_readproc(ptp,&buf)){
+ fill_pcpu(&buf);
+ if(want_this_proc(&buf)) show_one_proc(&buf);
+ /* if(buf.cmdline) free(buf.cmdline); */ /* these crash */
+ /* if(buf.environ) free(buf.environ); */
+ memset(&buf, '#', sizeof(proc_t));
+ }
+ closeproc(ptp);
+}
+
+/***** forest output requires sorting by ppid; add start_time by default */
+static void prep_forest_sort(void){
+ sort_node *tmp_list = sort_list;
+ const format_struct *incoming;
+
+ if(!sort_list) { /* assume start time order */
+ incoming = search_format_array("start_time");
+ if(!incoming) fprintf(stderr, "Could not find start_time!\n");
+ tmp_list = malloc(sizeof(sort_node));
+ tmp_list->reverse = 0;
+ tmp_list->typecode = '?'; /* what was this for? */
+ tmp_list->sr = incoming->sr;
+ tmp_list->next = sort_list;
+ sort_list = tmp_list;
+ }
+ /* this is required for the forest option */
+ incoming = search_format_array("ppid");
+ if(!incoming) fprintf(stderr, "Could not find ppid!\n");
+ tmp_list = malloc(sizeof(sort_node));
+ tmp_list->reverse = 0;
+ tmp_list->typecode = '?'; /* what was this for? */
+ tmp_list->sr = incoming->sr;
+ tmp_list->next = sort_list;
+ sort_list = tmp_list;
+}
+
+/* we rely on the POSIX requirement for zeroed memory */
+static proc_t *processes[32*1024];
+
+/***** compare function for qsort */
+static int compare_two_procs(const void *a, const void *b){
+ sort_node *tmp_list = sort_list;
+ while(tmp_list){
+ int result;
+ result = (*tmp_list->sr)(*(const proc_t **)a, *(const proc_t **)b);
+ if(result) return (tmp_list->reverse) ? -result : result;
+ tmp_list = tmp_list->next;
+ }
+ return 0; /* no conclusion */
+}
+
+/***** show pre-sorted array of process pointers */
+static void show_proc_array(int n){
+ proc_t **p = processes;
+ while(n--){
+ show_one_proc(*p);
+ /* if(p->cmdline) free(p->cmdline); */ /* this crashes */
+ /* if(p->environ) free(p->environ); */ /* this crashes */
+ /* memset(*p, '%', sizeof(proc_t)); */ /* debug */
+ free(*p);
+ p++;
+ }
+}
+
+/***** show tree */
+/* this needs some optimization work */
+#define ADOPTED(x) 1
+static void show_tree(const int self, const int n, const int level, const int have_sibling){
+ int i = 0;
+ if(level){
+ /* add prefix of "+" or "L" */
+ if(have_sibling) forest_prefix[level-1] = '+';
+ else forest_prefix[level-1] = 'L';
+ forest_prefix[level] = '\0';
+ }
+ show_one_proc(processes[self]); /* first show self */
+ /* if(p->cmdline) free(p->cmdline); */ /* this crashes */
+ /* if(p->environ) free(p->environ); */ /* this crashes */
+ /* memset(*p, '%', sizeof(proc_t)); */ /* debug */
+ for(;;){ /* look for children */
+ if(i >= n) return; /* no children */
+ if(processes[i]->ppid == processes[self]->pid) break;
+ i++;
+ }
+ if(level){
+ /* change our prefix to "|" or " " for the children */
+ if(have_sibling) forest_prefix[level-1] = '|';
+ else forest_prefix[level-1] = ' ';
+ forest_prefix[level] = '\0';
+ }
+ for(;;){
+ int self_pid;
+ int more_children = 1;
+ if(i >= n) break; /* over the edge */
+ self_pid=processes[self]->pid;
+ if(i+1 >= n)
+ more_children = 0;
+ else
+ if(processes[i+1]->ppid != self_pid) more_children = 0;
+ if(self_pid==1 && ADOPTED(processes[i]) && forest_type!='u')
+ show_tree(i++, n, level, more_children);
+ else
+ show_tree(i++, n, level+1, more_children);
+ if(!more_children) break;
+ }
+ /* chop prefix that children added -- do we need this? */
+ forest_prefix[level] = '\0';
+}
+
+/***** show forest */
+static void show_forest(const int n){
+ int i = n;
+ int j;
+ while(i--){ /* cover whole array looking for trees */
+ j = n;
+ while(j--){ /* search for parent: if none, i is a tree! */
+ if(processes[j]->pid == processes[i]->ppid) goto not_root;
+ }
+ show_tree(i,n,0,0);
+not_root:
+ }
+ /* don't free the array because it takes time and ps will exit anyway */
+}
+
+/***** sorted or forest */
+static void fancy_spew(void){
+ proc_t *retbuf;
+ PROCTAB* ptp;
+ int n = 0; /* number of processes & index into array */
+ ptp = openproc(PROC_FILLBUG);
+ if(!ptp) {
+ fprintf(stderr, "Error: can not access /proc.\n");
+ exit(1);
+ }
+ while((retbuf = ps_readproc(ptp,NULL))){
+ fill_pcpu(retbuf);
+ if(want_this_proc(retbuf)) processes[n++] = retbuf;
+ else free(retbuf);
+ }
+ closeproc(ptp);
+ if(!n) return; /* no processes */
+ if(forest_type) prep_forest_sort();
+ qsort(processes, n, sizeof(proc_t*), compare_two_procs);
+ if(forest_type) show_forest(n);
+ else show_proc_array(n);
+}
+
+
+/***** no comment */
+int main(int argc, char *argv[]){
+#ifdef DEBUG
+ init_stack_trace(argv[0]);
+#else
+ do {
+ struct sigaction sa;
+ int i = 32;
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_handler = signal_handler;
+ sigfillset(&sa.sa_mask);
+ while(i--) switch(i){
+ default:
+ sigaction(i,&sa,NULL);
+ case 0:
+ case SIGINT: /* ^C */
+ case SIGQUIT: /* ^\ */
+ case SIGPROF: /* profiling */
+ case SIGKILL: /* can not catch */
+ case SIGSTOP: /* can not catch */
+ case SIGWINCH: /* don't care if window size changes */
+ }
+ } while (0);
+#endif
+
+ reset_global(); /* must be before parser */
+ arg_parse(argc,argv);
+
+/* arg_show(); */
+ trace("screen is %ux%u\n",screen_cols,screen_rows);
+/* printf("sizeof(proc_t) is %d.\n", sizeof(proc_t)); */
+ trace("======= ps output follows =======\n");
+
+ init_output(); /* must be between parser and output */
+ check_headers();
+ if (open_psdb(namelist_file)) wchan_is_number = 1;
+ if(forest_type || sort_list) fancy_spew(); /* sort or forest */
+ else simple_spew(); /* no sort, no forest */
+ show_one_proc((proc_t *)-1); /* no output yet? */
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright 1998 by Albert Cahalan; all rights resered.
+ * This file may be used subject to the terms and conditions of the
+ * GNU Library General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+#include <sys/types.h>
+
+/* sanitize a string, without the nice BSD library function: */
+/* strvis(vis_args, k->ki_args, VIS_TAB | VIS_NL | VIS_NOSLASH) */
+int octal_escape_str(char *dst, const char *src, size_t n){
+ unsigned char c;
+ char d;
+ size_t i;
+ const char *codes =
+ "Z------abtnvfr-------------e----"
+ " *******************************" /* better: do not print any space */
+ "****************************\\***"
+ "*******************************-"
+ "--------------------------------"
+ "********************************"
+ "********************************"
+ "********************************";
+ for(i=0; i<n;){
+ c = (unsigned char) *(src++);
+ d = codes[c];
+ switch(d){
+ case 'Z':
+ goto leave;
+ case '*':
+ i++;
+ *(dst++) = c;
+ break;
+ case '-':
+ if(i+4 > n) goto leave;
+ i += 4;
+ *(dst++) = '\\';
+ *(dst++) = "01234567"[c>>6];
+ *(dst++) = "01234567"[(c>>3)&07];
+ *(dst++) = "01234567"[c&07];
+ break;
+ default:
+ if(i+2 > n) goto leave;
+ i += 2;
+ *(dst++) = '\\';
+ *(dst++) = d;
+ break;
+ }
+ }
+leave:
+ *(dst++) = '\0';
+ return i;
+}
+
+/* sanitize a string via one-way mangle */
+int simple_escape_str(char *dst, const char *src, size_t n){
+ unsigned char c;
+ size_t i;
+ const char *codes =
+ "Z-------------------------------"
+ "********************************"
+ "********************************"
+ "*******************************-"
+ "--------------------------------"
+ "********************************"
+ "********************************"
+ "********************************";
+ for(i=0; i<n;){
+ c = (unsigned char) *(src++);
+ switch(codes[c]){
+ case 'Z':
+ goto leave;
+ case '*':
+ i++;
+ *(dst++) = c;
+ break;
+ case '-':
+ i++;
+ *(dst++) = '?';
+ break;
+ }
+ }
+leave:
+ *(dst++) = '\0';
+ return i;
+}
+
+/* escape a string as desired */
+int escape_str(char *dst, const char *src, size_t n){
+ return simple_escape_str(dst, src, n);
+}
+
+/* escape an argv or environment string array */
+int escape_strlist(char *dst, const char **src, size_t n){
+ size_t i = 0;
+ while(*src){
+ i += simple_escape_str(dst+i, *src, n-i);
+ if((n-i > 1) && (*(src+1))) dst[i++] = ' ';
+ src++;
+ }
+ return i;
+}
--- /dev/null
+/*
+ * Copyright 1998 by Albert Cahalan; all rights resered.
+ * This file may be used subject to the terms and conditions of the
+ * GNU Library General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <pwd.h>
+#include <grp.h>
+#include <string.h>
+
+/*#undef __GLIBC_MINOR__
+#define __GLIBC_MINOR__ 1 */
+#include "common.h"
+/*#undef __GLIBC_MINOR__
+#define __GLIBC_MINOR__ 0 */
+
+#include <sys/sysmacros.h>
+#include "../proc/version.h"
+#include "../proc/sysinfo.h"
+
+
+#ifndef __GNU_LIBRARY__
+#define __GNU_LIBRARY__ -1
+#endif
+#ifndef __GLIBC__
+#define __GLIBC__ -1
+#endif
+#ifndef __GLIBC_MINOR__
+#define __GLIBC_MINOR__ -1
+#endif
+
+
+static char *saved_personality_text = "You found a bug!";
+
+int all_processes = -1;
+char *bsd_j_format = (char *)0xdeadbeef;
+char *bsd_l_format = (char *)0xdeadbeef;
+char *bsd_s_format = (char *)0xdeadbeef;
+char *bsd_u_format = (char *)0xdeadbeef;
+char *bsd_v_format = (char *)0xdeadbeef;
+int bsd_c_option = -1;
+int bsd_e_option = -1;
+uid_t cached_euid = -1;
+dev_t cached_tty = -1;
+char forest_prefix[4 * 32*1024 + 100];
+int forest_type = -1;
+unsigned format_flags = 0xffffffff; /* -l -f l u s -j... */
+format_node *format_list = (format_node *)0xdeadbeef; /* digested formatting options */
+unsigned format_modifiers = 0xffffffff; /* -c -j -y -P -L... */
+int header_gap = -1;
+int header_type = -1;
+int include_dead_children = -1;
+int lines_to_next_header = -1;
+const char *namelist_file = (const char *)0xdeadbeef;
+int negate_selection = -1;
+int running_only = -1;
+unsigned personality = 0xffffffff;
+int prefer_bsd_defaults = -1;
+int screen_cols = -1;
+int screen_rows = -1;
+unsigned long seconds_since_boot = -1;
+selection_node *selection_list = (selection_node *)0xdeadbeef;
+unsigned simple_select = 0xffffffff;
+sort_node *sort_list = (sort_node *)0xdeadbeef; /* ready-to-use sort list */
+char *sysv_f_format = (char *)0xdeadbeef;
+char *sysv_fl_format = (char *)0xdeadbeef;
+char *sysv_j_format = (char *)0xdeadbeef;
+char *sysv_l_format = (char *)0xdeadbeef;
+int unix_f_option = -1;
+int user_is_number = -1;
+int wchan_is_number = -1;
+
+
+static void reset_selection_list(void){
+ selection_node *old;
+ selection_node *walk = selection_list;
+ if(selection_list == (selection_node *)0xdeadbeef){
+ selection_list = NULL;
+ return;
+ }
+ while(walk){
+ old = walk;
+ walk = old->next;
+ free(old->u);
+ free(old);
+ }
+ selection_list = NULL;
+}
+
+/* The rules:
+ * 1. Defaults are implementation-specific. (ioctl,termcap,guess)
+ * 2. COLUMNS and LINES override the defaults. (standards compliance)
+ * 3. Command line options override everything else.
+ * 4. Actual output may be more if the above is too narrow.
+ */
+static void set_screen_size(void){
+ struct winsize ws;
+ char *columns; /* Unix98 environment variable */
+ char *lines; /* Unix98 environment variable */
+ if(ioctl(1, TIOCGWINSZ, &ws) != -1 && ws.ws_col>0 && ws.ws_row>0){
+ screen_cols = ws.ws_col;
+ screen_rows = ws.ws_row;
+ }else{ /* TODO: ought to do tgetnum("co") and tgetnum("li") now */
+ screen_cols = 80;
+ screen_rows = 24;
+ }
+ if(!isatty(STDOUT_FILENO)) screen_cols = OUTBUF_SIZE;
+ columns = getenv("COLUMNS");
+ if(columns && *columns){
+ long t;
+ char *endptr;
+ t = strtol(columns, &endptr, 0);
+ if(!*endptr && (t>0) && (t<(long)OUTBUF_SIZE)) screen_cols = (int)t;
+ }
+ lines = getenv("LINES");
+ if(lines && *lines){
+ long t;
+ char *endptr;
+ t = strtol(lines, &endptr, 0);
+ if(!*endptr && (t>0) && (t<(long)OUTBUF_SIZE)) screen_rows = (int)t;
+ }
+ if((screen_cols<9) || (screen_rows<2))
+ fprintf(stderr,"Your %dx%d screen size is bogus. Expect trouble.\n",
+ screen_cols, screen_rows
+ );
+}
+
+/**************** personality control **************/
+
+typedef struct personality_table_struct {
+ const char *name; /* personality name */
+ const void *jump; /* See gcc extension info. :-) */
+} personality_table_struct;
+
+static int compare_personality_table_structs(const void *a, const void *b){
+ return strcasecmp(((personality_table_struct*)a)->name,((personality_table_struct*)b)->name);
+}
+
+static const char *set_personality(void){
+ char *s;
+ size_t sl;
+ char buf[16];
+ personality_table_struct findme = { buf, NULL};
+ personality_table_struct *found;
+ static const personality_table_struct personality_table[] = {
+ {"390", &&case_390},
+ {"aix", &&case_aix},
+ {"bsd", &&case_bsd},
+ {"compaq", &&case_compaq},
+ {"debian", &&case_debian},
+ {"default", &&case_default},
+ {"digital", &&case_digital},
+ {"gnu", &&case_gnu},
+ {"hp", &&case_hp},
+ {"hpux", &&case_hpux},
+ {"irix", &&case_irix},
+ {"linux", &&case_linux},
+ {"old", &&case_old},
+ {"os390", &&case_os390},
+ {"posix", &&case_posix},
+ {"s390", &&case_s390},
+ {"sco", &&case_sco},
+ {"sgi", &&case_sgi},
+ {"solaris2", &&case_solaris2},
+ {"sunos4", &&case_sunos4},
+ {"sysv", &&case_sysv},
+ {"tru64", &&case_tru64},
+ {"unix", &&case_unix},
+ {"unix95", &&case_unix95},
+ {"unix98", &&case_unix98},
+ {"unknown", &&case_unknown}
+ };
+ const int personality_table_count = sizeof(personality_table)/sizeof(personality_table_struct);
+
+ personality = 0;
+ prefer_bsd_defaults = 0;
+
+ bsd_j_format = "OL_j";
+ bsd_l_format = "OL_l";
+ bsd_s_format = "OL_s";
+ bsd_u_format = "OL_u";
+ bsd_v_format = "OL_v";
+
+ /* When these are NULL, the code does SysV output modifier logic */
+ sysv_f_format = NULL;
+ sysv_fl_format = NULL;
+ sysv_j_format = NULL;
+ sysv_l_format = NULL;
+
+ s = getenv("PS_PERSONALITY");
+ if(!s || !*s) s = getenv("CMD_ENV");
+ if(!s || !*s) s="unknown"; /* "Do The Right Thing[tm]" */
+ if(getenv("I_WANT_A_BROKEN_PS")) s="old";
+ sl = strlen(s);
+ if(sl > 15) return "Environment specified an unknown personality.";
+ strncpy(buf, s, sl);
+ buf[sl] = '\0';
+ saved_personality_text = strdup(buf);
+
+ found = bsearch(&findme, personality_table, personality_table_count,
+ sizeof(personality_table_struct), compare_personality_table_structs
+ );
+
+ if(!found) return "Environment specified an unknown personality.";
+
+ goto *(found->jump); /* See gcc extension info. :-) */
+
+ case_bsd:
+ personality = PER_FORCE_BSD | PER_BSD_h | PER_BSD_m;
+ prefer_bsd_defaults = 1;
+ bsd_j_format = "FB_j";
+ bsd_l_format = "FB_l";
+ /* bsd_s_format not used */
+ bsd_u_format = "FB_u";
+ bsd_v_format = "FB_v";
+ return NULL;
+
+ case_old:
+ personality = PER_FORCE_BSD | PER_OLD_m;
+ prefer_bsd_defaults = 1;
+ return NULL;
+
+ case_debian: /* Toss this? They don't seem to care much. */
+ case_gnu:
+ personality = PER_GOOD_o | PER_CUMUL_MARKED | PER_OLD_m;
+ prefer_bsd_defaults = 1;
+ sysv_f_format = "RD_f";
+ /* sysv_fl_format = "RD_fl"; */ /* Debian can't do this! */
+ sysv_j_format = "RD_j";
+ sysv_l_format = "RD_l";
+ return NULL;
+
+ case_linux:
+ personality = PER_GOOD_o | PER_ZAP_ADDR | PER_SANE_USER;
+ return NULL;
+
+ case_default: /* use defaults for ps, ignoring other environment variables */
+ return NULL;
+
+ case_unknown: /* defaults, but also check inferior environment variables */
+ if(
+ getenv("UNIX95") /* Irix */
+ || getenv("POSIXLY_CORRECT") /* most gnu stuff */
+ || (getenv("POSIX2") && !strcmp(getenv("POSIX2"), "on")) /* Unixware 7 */
+ ) personality = PER_BROKEN_o;
+ return NULL;
+
+ case_aix:
+ bsd_j_format = "FB_j";
+ bsd_l_format = "FB_l";
+ /* bsd_s_format not used */
+ bsd_u_format = "FB_u";
+ bsd_v_format = "FB_v";
+ return NULL;
+
+ case_tru64:
+ case_compaq:
+ case_digital:
+ personality = PER_GOOD_o | PER_BSD_h;
+ prefer_bsd_defaults = 1;
+ sysv_f_format = "F5FMT";
+ sysv_fl_format = "FL5FMT";
+ sysv_j_format = "JFMT";
+ sysv_l_format = "L5FMT";
+ bsd_j_format = "JFMT";
+ bsd_l_format = "LFMT";
+ bsd_s_format = "SFMT";
+ bsd_u_format = "UFMT";
+ bsd_v_format = "VFMT";
+ return NULL;
+
+ case_sunos4:
+ personality = PER_NO_DEFAULT_g;
+ prefer_bsd_defaults = 1;
+ bsd_j_format = "FB_j";
+ bsd_l_format = "FB_l";
+ /* bsd_s_format not used */
+ bsd_u_format = "FB_u";
+ bsd_v_format = "FB_v";
+ return NULL;
+
+ case_irix:
+ case_sgi:
+ s = getenv("_XPG");
+ if(s && s[0]>'0' && s[0]<='9') personality = PER_BROKEN_o;
+ else personality = PER_IRIX_l;
+ return NULL;
+
+ case_os390: /* IBM's OS/390 OpenEdition on the S/390 mainframe */
+ case_s390:
+ case_390:
+ sysv_j_format = "J390"; /* don't know what -jl and -jf do */
+ return NULL;
+
+ case_hp:
+ case_hpux:
+ case_posix:
+ case_sco:
+ case_solaris2:
+ case_sysv:
+ case_unix95:
+ case_unix98:
+ case_unix:
+ personality = PER_BROKEN_o;
+ return NULL;
+}
+
+
+/************ Call this to reinitialize everything ***************/
+void reset_global(void){
+ static proc_t p;
+ reset_selection_list();
+ look_up_our_self(&p);
+ set_screen_size();
+ set_personality();
+
+ all_processes = 0;
+ bsd_c_option = 0;
+ bsd_e_option = 0;
+ cached_euid = geteuid();
+ cached_tty = p.tty;
+/* forest_prefix must be all zero because of POSIX */
+ forest_type = 0;
+ format_flags = 0; /* -l -f l u s -j... */
+ format_list = NULL; /* digested formatting options */
+ format_modifiers = 0; /* -c -j -y -P -L... */
+ header_gap = -1; /* send lines_to_next_header to -infinity */
+ header_type = HEAD_SINGLE;
+ include_dead_children = 0;
+ lines_to_next_header = 1;
+ namelist_file = NULL;
+ negate_selection = 0;
+ running_only = 0;
+ seconds_since_boot = uptime(0,0);
+ selection_list = NULL;
+ simple_select = 0;
+ sort_list = NULL;
+ unix_f_option = 0;
+ user_is_number = 0;
+ wchan_is_number = 0;
+}
+
+/*********** spew variables ***********/
+void self_info(void){
+#ifndef EMULATE_FPUTS
+ int count;
+#endif
+ fprintf(stderr,
+ "BSD j %s\n"
+ "BSD l %s\n"
+ "BSD s %s\n"
+ "BSD u %s\n"
+ "BSD v %s\n"
+ "SysV -f %s\n"
+ "SysV -fl %s\n"
+ "SysV -j %s\n"
+ "SysV -l %s\n"
+ "\n",
+ bsd_j_format ? bsd_j_format : "(none)",
+ bsd_l_format ? bsd_l_format : "(none)",
+ bsd_s_format ? bsd_s_format : "(none)",
+ bsd_u_format ? bsd_u_format : "(none)",
+ bsd_v_format ? bsd_v_format : "(none)",
+ sysv_f_format ? sysv_f_format : "(none)",
+ sysv_fl_format ? sysv_fl_format : "(none)",
+ sysv_j_format ? sysv_j_format : "(none)",
+ sysv_l_format ? sysv_l_format : "(none)"
+ );
+
+ display_version();
+ fprintf(stderr, "Linux version %d.%d.%d\n",
+ LINUX_VERSION_MAJOR(linux_version_code),
+ LINUX_VERSION_MINOR(linux_version_code),
+ LINUX_VERSION_PATCH(linux_version_code)
+ );
+ /* __libc_print_version(); */ /* how can we get the run-time version? */
+ fprintf(stderr, "Compiled with: libc %d, internal version %d.%d\n\n",
+ __GNU_LIBRARY__, __GLIBC__, __GLIBC_MINOR__
+ );
+
+#ifdef EMULATE_FPUTS
+ fprintf(stderr, "libc assumed lame, using fprintf to emulate fputs.\n\n");
+#else
+ fprintf(stderr, "fputs(\"");
+ count = fputs("123456789", stderr);
+ fprintf(stderr, "\", stderr) gives %d, which is %s.\n",
+ count, count==9?"good":"BAD!\nAdjust ps/common.h or libc, then recompile"
+ );
+ if(count!=9){
+ fprintf(stderr, "(procps includes a libc patch called glibc.patch)\n");
+ }
+ fprintf(stderr, "\n");
+#endif
+
+ fprintf(stderr,
+ "header_gap=%d lines_to_next_header=%d\n"
+ "screen_cols=%d screen_rows=%d\n"
+ "\n",
+ header_gap, lines_to_next_header,
+ screen_cols, screen_rows
+ );
+
+/* open_psdb(namelist_file); */
+ fprintf(stderr,
+ "personality=0x%08x (from \"%s\")\n"
+ "EUID=%d TTY=%d,%d Hertz=%ld\n"
+/* "namelist_file=\"%s\"\n" */
+ ,
+ personality, saved_personality_text,
+ cached_euid, (int)major(cached_tty), (int)minor(cached_tty), Hertz /* ,
+ namelist_file?namelist_file:"<no System.map file>" */
+ );
+}
--- /dev/null
+/*
+ * Copyright 1998 by Albert Cahalan; all rights reserved.
+ * This file may be used subject to the terms and conditions of the
+ * GNU Library General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+
+/*
+ * The help message must not become longer, because it must fit
+ * on an 80x24 screen _with_ the error message and command prompt.
+ */
+
+
+const char *help_message =
+"********* simple selection ********* ********* selection by list *********\n"
+"-A all processes -C by command name\n"
+"-N negate selection -G by real group ID (supports names)\n"
+"-a all w/ tty except session leaders -U by real user ID (supports names)\n"
+"-d all except session leaders -g by session leader OR by group name\n"
+"-e all processes -p by process ID\n"
+"T all processes on this terminal -s processes in the sessions given\n"
+"a all w/ tty, including other users -t by tty\n"
+"g all, even group leaders! -u by effective user ID (supports names)\n"
+"r only running processes U processes for specified users\n"
+"x processes w/o controlling ttys t by tty\n"
+"*********** output format ********** *********** long options ***********\n"
+"-o,o user-defined -f full --Group --User --pid --cols\n"
+"-j,j job control s signal --group --user --sid --rows\n"
+"-O,O preloaded -o v virtual memory --cumulative --format --deselect\n"
+"-l,l long u user-oriented --sort --tty --forest --version\n"
+" X registers --heading --no-heading\n"
+" ********* misc options *********\n"
+"-V,V show version L list format codes f ASCII art forest\n"
+"-m,m show threads S children in sum -y change -l format\n"
+"-n,N set namelist file c true command name n numeric WCHAN,UID\n"
+"-w,w wide output e show environment -H process heirarchy\n"
+;
+
+
+
+/* Missing:
+ *
+ * -c -L -P -M --info
+ *
+ */
--- /dev/null
+From ddainese@dsi.unive.it Sun Apr 18 14:12:27 1999
+
+here is a first translation of the text:
+---------------------------------------------------------------------
+const char *help_message =
+"****** seleziona i processi ******* * seleziona una lista specificando: *\n"
+"-A tutti -C il nome del comando\n"
+"-N nega la selezione -G il real group ID (supporta i nomi)\n"
+"-a con tty, tranne i session leader -U il real user ID (supporta i nomi)\n"
+"-d tutti, tranne i session leader -g il session leader OPPURE il gruppo\n"
+"-e tutti -p l'ID del processo\n"
+"T su questo terminale -s la sessione\n"
+"a con tty, di tutti gli utenti -t il tty\n"
+"g tutti, anche i leader di gruppo -u l'effective user ID (supporta i nomi)\n"
+"r in stato running U una lista di utenti\n"
+"x senza tty t il tty\n"
+"******** formato dell'output ****** ********** opzioni lunghe **********\n"
+"-o,o definito dall'utente --Group --User --pid --cols\n"
+"-j,j job s segnali --group --user --sid --rows\n"
+"-O,O -o preimpostato v memoria virtuale --cumulative --format --deselect\n"
+"-l,l lungo u utenti --sort --tty --forest --version\n"
+"-f completo X registri --heading --no-heading\n"
+" ******** opzioni varie *********\n"
+"-V,V versione L codici di formato f foresta di ASCII\n"
+"-m,m vista ad albero S figli in sum -y cambia il formato -l\n"
+"-n,N namelist file c nome reale del comando n WCHAN,UID numerici\n"
+"-w,w output ampio e mostra l'environment -H gerarchia dei processi\n"
+;
+---------------------------------------------------------------------
+
+Unfortunately it isn't really understandable for a newbie, because
+there is too little space for a good translation; to make it more
+meaningful, I would need about an entire line for every option, thus
+if you really want the help text stays under 22 lines, it must
+contains only 22 options. What do you think about it?
--- /dev/null
+/*
+ * Copyright 1999 by Albert Cahalan; all rights resered.
+ *
+ * This file may be used subject to the terms and conditions of the
+ * GNU Library General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+
+/*
+ * This file is really gross, and I know it. I looked into several
+ * alternate ways to deal with the mess, and they were all ugly.
+ *
+ * FreeBSD has a fancy hack using offsets into a struct -- that
+ * saves code but it is _really_ gross. See the PO macro below.
+ *
+ * We could have a second column width for wide output format.
+ * For example, Digital prints the real-time signals.
+ */
+
+
+/*
+ * Data table idea:
+ *
+ * table 1 maps aix to specifier
+ * table 2 maps shortsort to specifier
+ * table 3 maps macro to specifiers
+ * table 4 maps specifier to title,datatype,offset,vendor,helptext
+ * table 5 maps datatype to justification,width,widewidth,sorting,printing
+ *
+ * Here, "datatype" could be user,uid,u16,pages,deltaT,signals,tty,longtty...
+ * It must be enough to determine printing and sorting.
+ *
+ * After the tables, increase width as needed to fit the header.
+ *
+ * Table 5 could go in a file with the output functions.
+ */
+
+
+/* proc_t offset macro */
+#define PO(q) ((unsigned long)(&(((proc_t*)0)->q)))
+
+#include <ctype.h>
+#include <fcntl.h>
+#include <grp.h>
+#include <limits.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/resource.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "../proc/readproc.h"
+#include "../proc/sysinfo.h"
+#include "../proc/status.h"
+#include "../proc/procps.h"
+#include "../proc/devname.h"
+#include "common.h"
+
+
+/* TODO:
+ * Stop assuming system time is local time.
+ */
+
+#define COLWID 240 /* satisfy snprintf, which is faster than sprintf */
+
+static char whitespace_and_outbuf[OUTBUF_SIZE + SPACE_AMOUNT + PAGE_SIZE*2];
+static char *outbuf = whitespace_and_outbuf+SPACE_AMOUNT;
+static char *whitespace = whitespace_and_outbuf;
+static unsigned max_rightward = 0x12345678; /* space for RIGHT stuff */
+static unsigned max_leftward = 0x12345678; /* space for LEFT stuff */
+
+/* Justification control for flags field. */
+#define JUST_MASK 0x0f
+ /* AIXHACK 0 */
+#define USER 1 /* left if text, right if numeric */
+#define LEFT 2
+#define RIGHT 3
+#define UNLIMITED 4
+#define WCHAN 5 /* left if text, right if numeric */
+#define SIGNAL 6 /* right in 9, or 16 if screen_cols>107 */
+
+#define CUMUL 16 /* mark cumulative (Summed) headers with 'C' */
+
+static int wide_signals; /* true if we have room */
+
+static proc_t *pp; /* the process being printed */
+
+static unsigned long seconds_since_1970;
+static unsigned long time_of_boot;
+static unsigned long page_shift;
+
+
+/*************************************************************************/
+/************ Lots of sort functions, starting with the NOP **************/
+
+static int sr_nop(const proc_t* a, const proc_t* b){
+ (void)a;(void)b; /* shut up gcc */
+ return 0;
+}
+
+#define CMP_STR(NAME) \
+static int sr_ ## NAME(const proc_t* P, const proc_t* Q) { \
+ return strcmp(P->NAME, Q->NAME); \
+}
+
+#define CMP_INT(NAME) \
+static int sr_ ## NAME (const proc_t* P, const proc_t* Q) { \
+ if (P->NAME < Q->NAME) return -1; \
+ if (P->NAME > Q->NAME) return 1; \
+ return 0; \
+}
+
+CMP_INT(cutime)
+CMP_INT(cstime)
+CMP_INT(priority) /* nice */
+CMP_INT(timeout)
+CMP_INT(nice) /* priority */
+CMP_INT(rss) /* resident set size from stat file */ /* vm_rss, resident */
+CMP_INT(it_real_value)
+CMP_INT(size) /* total pages */ /* vm_size, vsize */
+CMP_INT(resident) /* resident pages */ /* vm_rss, rss */
+CMP_INT(share) /* shared pages */
+CMP_INT(trs) /* executable pages */
+CMP_INT(lrs) /* obsolete "library" pages above 0x60000000 */
+CMP_INT(drs) /* other pages (assumed data?) */
+CMP_INT(dt) /* dirty pages */
+
+CMP_INT(vm_size) /* kB VM */ /* size, vsize */
+CMP_INT(vm_lock) /* kB locked */
+CMP_INT(vm_rss) /* kB rss */ /* rss, resident */
+CMP_INT(vm_data) /* kB "data" == data-stack */
+CMP_INT(vm_stack) /* kB stack */
+CMP_INT(vm_exe) /* kB "exec" == exec-lib */
+CMP_INT(vm_lib) /* kB "libraries" */
+CMP_INT(vsize) /* pages VM */ /* size, vm_size */
+CMP_INT(rss_rlim)
+CMP_INT(flags)
+CMP_INT(min_flt)
+CMP_INT(maj_flt)
+CMP_INT(cmin_flt)
+CMP_INT(cmaj_flt)
+CMP_INT(nswap)
+CMP_INT(cnswap)
+CMP_INT(utime)
+CMP_INT(stime) /* Old: sort by systime. New: show start time. Uh oh. */
+CMP_INT(start_code)
+CMP_INT(end_code)
+CMP_INT(start_stack)
+CMP_INT(kstk_esp)
+CMP_INT(kstk_eip)
+CMP_INT(start_time)
+CMP_INT(wchan)
+
+/* CMP_STR(*environ) */
+/* CMP_STR(*cmdline) */
+
+CMP_STR(ruser)
+CMP_STR(euser)
+CMP_STR(suser)
+CMP_STR(fuser)
+CMP_STR(rgroup)
+CMP_STR(egroup)
+CMP_STR(sgroup)
+CMP_STR(fgroup)
+CMP_STR(cmd)
+/* CMP_STR(ttyc) */ /* FIXME -- use strncmp with 8 max */
+
+CMP_INT(ruid)
+CMP_INT(rgid)
+CMP_INT(euid)
+CMP_INT(egid)
+CMP_INT(suid)
+CMP_INT(sgid)
+CMP_INT(fuid)
+CMP_INT(fgid)
+CMP_INT(pid)
+CMP_INT(ppid)
+CMP_INT(pgrp)
+CMP_INT(session)
+CMP_INT(tty)
+CMP_INT(tpgid)
+
+CMP_INT(pcpu)
+
+CMP_INT(state)
+
+/***************************************************************************/
+/************ Lots of format functions, starting with the NOP **************/
+
+static int pr_nop(void){
+ return snprintf(outbuf, COLWID, "%c", '-');
+}
+
+
+/********* Unix 98 ************/
+
+/***
+
+Only comm and args are allowed to contain blank characters; all others are
+not. Any implementation-dependent variables will be specified in the system
+documentation along with the default header and indicating if the field
+may contain blank characters.
+
+Some headers do not have a standardized specifier!
+
+%CPU pcpu The % of cpu time used recently, with unspecified "recently".
+ADDR The address of the process.
+C Processor utilisation for scheduling.
+CMD The command name, or everything with -f.
+COMMAND args Command + args. May chop as desired. May use either version.
+COMMAND comm argv[0]
+ELAPSED etime Elapsed time since the process was started. [[dd-]hh:]mm:ss
+F Flags (octal and additive)
+GROUP group Effective group ID, prefer text over decimal.
+NI nice Decimal system scheduling priority, see nice(1).
+PGID pgid The decimal value of the process group ID.
+PID pid Decimal PID.
+PPID ppid Decimal PID.
+PRI Priority. Higher numbers mean lower priority.
+RGROUP rgroup Real group ID, prefer text over decimal.
+RUSER ruser Real user ID, prefer text over decimal.
+S The state of the process.
+STIME Starting time of the process.
+SZ The size in blocks of the core image of the process.
+TIME time Cumulative CPU time. [dd-]hh:mm:ss
+TT tty Name of tty in format used by who(1).
+TTY The controlling terminal for the process.
+UID UID, or name when -f
+USER user Effective user ID, prefer text over decimal.
+VSZ vsz Virtual memory size in decimal kB.
+WCHAN Where waiting/sleeping or blank if running.
+
+The nice value is used to compute the priority.
+
+For some undefined ones, Digital does:
+
+F flag Process flags -- but in hex!
+PRI pri Process priority
+S state Symbolic process status
+TTY tt,tty,tname,longtname -- all do "ttyp1", "console", "??"
+UID uid Process user ID (effective UID)
+WCHAN wchan Address of event on which a
+
+For some undefined ones, Sun does:
+
+ADDR addr memory address of the process
+C c Processor utilization for scheduling (obsolete).
+CMD
+F f
+S s state: OSRZT
+STIME start time, printed w/o blanks. If 24h old, months & days
+SZ size (in pages) of the swappable process's image in main memory
+TTY
+UID uid
+WCHAN wchan
+
+For some undefined ones, SCO does:
+ADDR addr Virtual address of the process' entry in the process table.
+SZ swappable size in kB of the virtual data and stack
+STIME stime hms or md time format
+***/
+
+/* Source & destination are known. Return bytes or screen characters? */
+static int forest_helper(void){
+ char *p = forest_prefix;
+ char *q = outbuf;
+ if(!*p) return 0;
+ /* Arrrgh! somebody defined unix as 1 */
+ if(forest_type == 'u') goto unixy;
+ while(*p){
+ switch(*p){
+ case ' ': strcpy(q, " "); break;
+ case 'L': strcpy(q, " \\_ "); break;
+ case '+': strcpy(q, " \\_ "); break;
+ case '|': strcpy(q, " | "); break;
+ case '\0': return q-outbuf; /* redundant & not used */
+ }
+ q += 4;
+ p++;
+ }
+ return q-outbuf; /* gcc likes this here */
+unixy:
+ while(*p){
+ switch(*p){
+ case ' ': strcpy(q, " "); break;
+ case 'L': strcpy(q, " "); break;
+ case '+': strcpy(q, " "); break;
+ case '|': strcpy(q, " "); break;
+ case '\0': return q-outbuf; /* redundant & not used */
+ }
+ q += 2;
+ p++;
+ }
+ return q-outbuf; /* gcc likes this here */
+}
+
+
+/* XPG4-UNIX, according to Digital:
+The "args" and "command" specifiers show what was passed to the command.
+Modifications to the arguments are not shown.
+*/
+
+/*
+ * pp->cmd short accounting name (comm & ucomm)
+ * pp->cmdline long name with args (args & command)
+ * pp->environ environment
+ */
+
+/* "command" is the same thing: long unless c */
+static int pr_args(void){
+ char *endp;
+ endp = outbuf + forest_helper();
+ if(bsd_c_option){
+ endp += escape_str(endp, pp->cmd, PAGE_SIZE); /* short version */
+ }else{
+ const char **lc = (const char**)pp->cmdline; /* long version */
+ if(lc && *lc) {
+ endp += escape_strlist(endp, lc, OUTBUF_SIZE);
+ } else {
+ char buf[ESC_STRETCH*PAGE_SIZE]; /* TODO: avoid copy */
+ escape_str(buf, pp->cmd, ESC_STRETCH*PAGE_SIZE);
+ endp += snprintf(endp, COLWID, "[%s]", buf);
+ }
+ }
+ if(bsd_e_option){
+ const char **env = (const char**)pp->environ;
+ if(env && *env){
+ *endp++ = ' ';
+ endp += escape_strlist(endp, env, OUTBUF_SIZE);
+ }
+ }
+ return endp - outbuf;
+}
+
+/* "ucomm" is the same thing: short unless -f */
+static int pr_comm(void){
+ char *endp;
+ endp = outbuf + forest_helper();
+ if(!unix_f_option){ /* does -f matter? */
+ endp += escape_str(endp, pp->cmd, PAGE_SIZE); /* short version */
+ }else{
+ const char **lc = (const char**)pp->cmdline; /* long version */
+ if(lc && *lc) {
+ endp += escape_strlist(endp, lc, OUTBUF_SIZE);
+ } else {
+ char buf[ESC_STRETCH*PAGE_SIZE]; /* TODO: avoid copy */
+ escape_str(buf, pp->cmd, ESC_STRETCH*PAGE_SIZE);
+ endp += snprintf(endp, COLWID, "[%s]", buf);
+ }
+ }
+ if(bsd_e_option){
+ const char **env = (const char**)pp->environ;
+ if(env && *env){
+ *endp++ = ' ';
+ endp += escape_strlist(endp, env, OUTBUF_SIZE);
+ }
+ }
+ return endp - outbuf;
+}
+/* Non-standard, from SunOS 5 */
+static int pr_fname(void){
+ char *endp;
+ endp = outbuf + forest_helper();
+ endp += escape_str(endp, pp->cmd, 8);
+ return endp - outbuf;
+}
+
+/* elapsed wall clock time, [[dd-]hh:]mm:ss format (not same as "time") */
+static int pr_etime(void){
+ unsigned t, dd,hh,mm,ss;
+ char *cp = outbuf;
+ t = (
+ ((unsigned long)seconds_since_boot)
+ - ((unsigned long)pp->start_time)
+ / Hertz
+ );
+ ss = t%60;
+ t /= 60;
+ mm = t%60;
+ t /= 60;
+ hh = t%24;
+ t /= 24;
+ dd = t;
+ cp +=( dd ? snprintf(cp, COLWID, "%u-", dd) : 0 );
+ cp +=( (dd || hh) ? snprintf(cp, COLWID, "%02u:", hh) : 0 );
+ cp += snprintf(cp, COLWID, "%02u:%02u", mm, ss) ;
+ return (int)(cp-outbuf);
+}
+static int pr_nice(void){
+ return snprintf(outbuf, COLWID, "%ld", pp->nice);
+}
+
+/* "Processor utilisation for scheduling." --- we use %cpu w/o fraction */
+static int pr_c(void){
+ unsigned long total_time; /* jiffies used by this process */
+ unsigned long pcpu = 0; /* scaled %cpu, 999 means 99.9% */
+ unsigned long seconds; /* seconds of process life */
+ total_time = pp->utime + pp->stime;
+ if(include_dead_children) total_time += (pp->cutime + pp->cstime);
+ seconds =
+ seconds_since_boot - ((unsigned long)pp->start_time) / Hertz
+ ;
+ /* Use 100ULL (not 100) to avoid 32-bit overflow. */
+ if(seconds) pcpu = (total_time * 100ULL / Hertz) / seconds;
+ if (pcpu > 99) pcpu = 99;
+ return snprintf(outbuf, COLWID, "%2u", (unsigned)pcpu);
+}
+/* normal %CPU in ##.# format. */
+static int pr_pcpu(void){
+ unsigned long total_time; /* jiffies used by this process */
+ unsigned long pcpu = 0; /* scaled %cpu, 999 means 99.9% */
+ unsigned long seconds; /* seconds of process life */
+ total_time = pp->utime + pp->stime;
+ if(include_dead_children) total_time += (pp->cutime + pp->cstime);
+ seconds =
+ seconds_since_boot - ((unsigned long)pp->start_time) / Hertz
+ ;
+ /* Use 1000ULL (not 1000) to avoid 32-bit overflow. */
+ if(seconds) pcpu = (total_time * 1000ULL / Hertz) / seconds;
+ if (pcpu > 999) pcpu = 999;
+ return snprintf(outbuf, COLWID, "%2u.%u", (unsigned)(pcpu/10), (unsigned)(pcpu%10));
+}
+/* this is a "per-mill" format, like %cpu with no decimal point */
+static int pr_cp(void){
+ unsigned long total_time; /* jiffies used by this process */
+ unsigned long pcpu = 0; /* scaled %cpu, 999 means 99.9% */
+ unsigned long seconds; /* seconds of process life */
+ total_time = pp->utime + pp->stime;
+ if(include_dead_children) total_time += (pp->cutime + pp->cstime);
+ seconds =
+ seconds_since_boot - ((unsigned long)pp->start_time) / Hertz
+ ;
+ /* Use 1000ULL (not 1000) to avoid 32-bit overflow. */
+ if(seconds) pcpu = (total_time * 1000ULL / Hertz) / seconds;
+ if (pcpu > 999) pcpu = 999;
+ return snprintf(outbuf, COLWID, "%3u", (unsigned)pcpu);
+}
+
+static int pr_pgid(void){
+ return snprintf(outbuf, COLWID, "%u", pp->pgrp);
+}
+static int pr_pid(void){
+ return snprintf(outbuf, COLWID, "%u", pp->pid);
+}
+static int pr_ppid(void){
+ return snprintf(outbuf, COLWID, "%u", pp->ppid);
+}
+
+
+/* cumulative CPU time, [dd-]hh:mm:ss format (not same as "etime") */
+static int pr_time(void){
+ unsigned t, dd,hh,mm,ss;
+ int c;
+ t = (unsigned)(
+ (
+ (unsigned long)(pp->utime)
+ +
+ (unsigned long)(pp->stime)
+ )
+ /
+ (unsigned long)Hertz
+ );
+ ss = t%60;
+ t /= 60;
+ mm = t%60;
+ t /= 60;
+ hh = t%24;
+ t /= 24;
+ dd = t;
+ c =( dd ? snprintf(outbuf, COLWID, "%u-", dd) : 0 );
+ c +=( snprintf(outbuf+c, COLWID, "%02u:%02u:%02u", hh, mm, ss) );
+ return c;
+}
+
+/* HP-UX puts this (I forget, vsz or vsize?) in kB and uses "sz" for pages.
+ * Unix98 requires "vsz" to be kB.
+ * Tru64 does both vsize and vsz like "1.23M"
+ *
+ * Our pp->vm_size is kB and our pp->vsize is pages.
+ *
+ * TODO: add flag for "1.23M" behavior, on this and other columns.
+ */
+static int pr_vsz(void){
+ return snprintf(outbuf, COLWID, "%lu", pp->vm_size);
+}
+
+/*
+ * internal terms: ruid euid suid fuid
+ * kernel vars: uid euid suid fsuid
+ * command args: ruid uid svuid n/a
+ */
+
+static int pr_ruser(void){
+ if(user_is_number || (strlen(pp->ruser)>max_rightward))
+ return snprintf(outbuf, COLWID, "%d", pp->ruid);
+ return snprintf(outbuf, COLWID, "%s", pp->ruser);
+}
+static int pr_egroup(void){
+ if(strlen(pp->egroup)>max_rightward) return snprintf(outbuf, COLWID, "%d", pp->egid);
+ return snprintf(outbuf, COLWID, "%s", pp->egroup);
+}
+static int pr_rgroup(void){
+ if(strlen(pp->rgroup)>max_rightward) return snprintf(outbuf, COLWID, "%d", pp->rgid);
+ return snprintf(outbuf, COLWID, "%s", pp->rgroup);
+}
+static int pr_euser(void){
+ if(user_is_number || (strlen(pp->euser)>max_rightward)) return snprintf(outbuf, COLWID, "%d", pp->euid);
+ return snprintf(outbuf, COLWID, "%s", pp->euser);
+}
+
+/********* maybe standard (Unix98 only defines the header) **********/
+
+
+/*
+ * "PRI" is created by "opri", or by "pri" when -c is used.
+ *
+ * Unix98 only specifies that a high "PRI" is low priority.
+ * Sun and SCO add the -c behavior. Sun defines "pri" and "opri".
+ * Linux may use "priority" for historical purposes.
+ */
+static int pr_priority(void){ /* -20..20 */
+ return snprintf(outbuf, COLWID, "%ld", pp->priority);
+}
+static int pr_pri(void){ /* 20..60 */
+ return snprintf(outbuf, COLWID, "%ld", 39 - pp->priority);
+}
+static int pr_opri(void){ /* 39..79 */
+ return snprintf(outbuf, COLWID, "%ld", 60 + pp->priority);
+}
+
+static int pr_wchan(void){
+/*
+ * Unix98 says "blank if running" and also "no blanks"! :-(
+ * Unix98 also says to use '-' if something is meaningless.
+ * Digital uses both '*' and '-', with undocumented differences.
+ * (the '*' for -1 (rare) and the '-' for 0)
+ * Sun claims to use a blank AND use '-', in the same man page.
+ * Perhaps "blank" should mean '-'.
+ *
+ * AIX uses '-' for running processes, the location when there is
+ * only one thread waiting in the kernel, and '*' when there is
+ * more than one thread waiting in the kernel.
+ */
+ if(!(pp->wchan & 0xffffff)) return snprintf(outbuf, COLWID, "%s", "-");
+ if(wchan_is_number) return snprintf(outbuf, COLWID, "%lx", pp->wchan & 0xffffff);
+ return snprintf(outbuf, COLWID, "%s", wchan(pp->wchan));
+}
+
+/* Terrible trunctuation, like BSD crap uses: I999 J999 K999 */
+/* FIXME: disambiguate /dev/tty69 and /dev/pts/69. */
+static int pr_tty4(void){
+/* snprintf(outbuf, COLWID, "%02x:%02x", pp->tty>>8, pp->tty&0xff); */
+ return dev_to_tty(outbuf, 4, pp->tty, pp->pid, ABBREV_DEV|ABBREV_TTY|ABBREV_PTS);
+}
+
+/* Unix98: format is unspecified, but must match that used by who(1). */
+static int pr_tty8(void){
+/* snprintf(outbuf, COLWID, "%02x:%02x", pp->tty>>8, pp->tty&0xff); */
+ return dev_to_tty(outbuf, PAGE_SIZE-1, pp->tty, pp->pid, ABBREV_DEV);
+}
+
+#if 0
+/* This BSD state display may contain spaces, which is illegal. */
+static int pr_oldstate(void){
+ return snprintf(outbuf, COLWID, "%s", status(pp));
+}
+#endif
+
+/* This state display is Unix98 compliant and has lots of info like BSD. */
+static int pr_stat(void){
+ int end = 0;
+ outbuf[end++] = pp->state;
+ if(pp->rss == 0 && pp->state != 'Z') outbuf[end++] = 'W';
+ if(pp->nice < 0) outbuf[end++] = '<';
+ if(pp->nice > 0) outbuf[end++] = 'N';
+ if(pp->vm_lock) outbuf[end++] = 'L';
+ outbuf[end] = '\0';
+ return end;
+}
+
+/* This minimal state display is Unix98 compliant, like SCO and SunOS 5 */
+static int pr_s(void){
+ outbuf[0] = pp->state;
+ outbuf[1] = '\0';
+ return 1;
+}
+
+static int pr_flag(void){
+ /* Unix98 requires octal -- good thing Linux hex looks octal! */
+ return snprintf(outbuf, COLWID, "%03lx", (pp->flags)&0x777);
+}
+
+static int pr_euid(void){
+ return snprintf(outbuf, COLWID, "%d", pp->euid);
+}
+
+/*********** non-standard ***********/
+
+/*** BSD
+sess session pointer
+(SCO has:Process session leader ID as a decimal value. (SESSION))
+jobc job control count
+cpu short-term cpu usage factor (for scheduling)
+sl sleep time (in seconds; 127 = infinity)
+re core residency time (in seconds; 127 = infinity)
+pagein pageins (same as majflt)
+lim soft memory limit
+tsiz text size (in Kbytes)
+***/
+
+static int pr_stackp(void){
+ return snprintf(outbuf, COLWID, "%08lx", pp->start_stack);
+}
+
+static int pr_esp(void){
+ return snprintf(outbuf, COLWID, "%08lx", pp->kstk_esp);
+}
+
+static int pr_eip(void){
+ return snprintf(outbuf, COLWID, "%08lx", pp->kstk_eip);
+}
+
+/* This function helps print old-style time formats */
+static int old_time_helper(char *dst, unsigned long t, unsigned long rel) {
+ if(!t) return snprintf(dst, COLWID, " -");
+ if((long)t == -1) return snprintf(dst, COLWID, " xx");
+ if((long)(t-=rel) < 0) t=0;
+ if(t>9999) return snprintf(dst, COLWID, "%5lu", t/100);
+ else return snprintf(dst, COLWID, "%2lu.%02lu", t/100, t%100);
+}
+
+static int pr_bsdtime(void){
+ unsigned long t;
+ t = pp->utime + pp->stime;
+ if(include_dead_children) t += (pp->cutime + pp->cstime);
+ t /= Hertz;
+ return snprintf(outbuf, COLWID, "%3ld:%02d", t/60, (int)(t%60));
+}
+
+static int pr_bsdstart(void){
+ time_t start;
+ time_t seconds_ago;
+ start = time_of_boot + pp->start_time/Hertz;
+ seconds_ago = seconds_since_1970 - start;
+ if(seconds_ago < 0) seconds_ago=0;
+ if(seconds_ago > 3600*24) strcpy(outbuf, ctime(&start)+4);
+ else strcpy(outbuf, ctime(&start)+10);
+ outbuf[6] = '\0';
+ return 6;
+}
+
+static int pr_timeout(void){
+ return old_time_helper(outbuf, pp->timeout, seconds_since_boot*Hertz);
+}
+
+static int pr_alarm(void){
+ return old_time_helper(outbuf, pp->it_real_value, 0);
+}
+
+/* HP-UX puts this in pages and uses "vsz" for kB */
+static int pr_sz(void){
+ return snprintf(outbuf, COLWID, "%lu", (pp->vm_size)/(PAGE_SIZE/1024));
+}
+
+
+/*
+ * FIXME: trs,drs,tsiz,dsiz,m_trs,m_drs,vm_exe,vm_data,trss
+ * I suspect some/all of those are broken. They seem to have been
+ * inherited by Linux and AIX from early BSD systems. FreeBSD only
+ * retains tsiz. The prefixed versions come from Debian.
+ * Sun and Digital have none of this crap. The code here comes
+ * from an old Linux ps, and might not be correct for ELF executables.
+ *
+ * AIX TRS size of resident-set (real memory) of text
+ * AIX TSIZ size of text (shared-program) image
+ * FreeBSD tsiz text size (in Kbytes)
+ * 4.3BSD NET/2 trss text resident set size (in Kbytes)
+ * 4.3BSD NET/2 tsiz text size (in Kbytes)
+ */
+
+/* kB data size. See drs, tsiz & trs. */
+static int pr_dsiz(void){
+ long dsiz = 0;
+ if(pp->vsize) dsiz += (pp->vsize - pp->end_code + pp->start_code) >> 10;
+ return snprintf(outbuf, COLWID, "%ld", dsiz);
+}
+
+/* kB text (code) size. See trs, dsiz & drs. */
+static int pr_tsiz(void){
+ long tsiz = 0;
+ if(pp->vsize) tsiz += (pp->end_code - pp->start_code) >> 10;
+ return snprintf(outbuf, COLWID, "%ld", tsiz);
+}
+
+/* kB _resident_ data size. See dsiz, tsiz & trs. */
+static int pr_drs(void){
+ long drs = 0;
+ if(pp->vsize) drs += (pp->vsize - pp->end_code + pp->start_code) >> 10;
+ return snprintf(outbuf, COLWID, "%ld", drs);
+}
+
+/* kB text _resident_ (code) size. See tsiz, dsiz & drs. */
+static int pr_trs(void){
+ long trs = 0;
+ if(pp->vsize) trs += (pp->end_code - pp->start_code) >> 10;
+ return snprintf(outbuf, COLWID, "%ld", trs);
+}
+
+
+
+static int pr_minflt(void){
+ long flt = pp->min_flt;
+ if(include_dead_children) flt += pp->cmin_flt;
+ return snprintf(outbuf, COLWID, "%ld", flt);
+}
+
+static int pr_majflt(void){
+ long flt = pp->maj_flt;
+ if(include_dead_children) flt += pp->cmaj_flt;
+ return snprintf(outbuf, COLWID, "%ld", flt);
+}
+
+static int pr_lim(void){
+ if(pp->rss_rlim == RLIM_INFINITY) return snprintf(outbuf, COLWID, "%s", "xx");
+ return snprintf(outbuf, COLWID, "%5ld", pp->rss_rlim >> 10);
+}
+
+/* should print leading tilde ('~') if process is bound to the CPU */
+static int pr_psr(void){
+ return snprintf(outbuf, COLWID, "%d", pp->processor);
+}
+
+static int pr_wname(void){
+/* SGI's IRIX always uses a number for "wchan", so "wname" is provided too.
+ *
+ * We use '-' for running processes, the location when there is
+ * only one thread waiting in the kernel, and '*' when there is
+ * more than one thread waiting in the kernel.
+ */
+ if(!(pp->wchan & 0xffffff)) return snprintf(outbuf, COLWID, "%s", "-");
+ return snprintf(outbuf, COLWID, "%s", wchan(pp->wchan));
+}
+
+static int pr_nwchan(void){
+ if(!(pp->wchan & 0xffffff)) return snprintf(outbuf, COLWID, "-");
+ return snprintf(outbuf, COLWID, "%lx", pp->wchan & 0xffffff);
+}
+
+static int pr_rss(void){
+ return snprintf(outbuf, COLWID, "%lu", pp->vm_rss);
+}
+
+/* pp->vm_rss * 1000 would overflow on 32-bit systems with 64 GB memory */
+static int pr_pmem(void){
+ unsigned long pmem = 0;
+ pmem = pp->vm_rss * 1000ULL / kb_main_total;
+ if (pmem > 999) pmem = 999;
+ return snprintf(outbuf, COLWID, "%2u.%u", (unsigned)(pmem/10), (unsigned)(pmem%10));
+}
+
+static int pr_lstart(void){
+ time_t t;
+ t = (
+ ((unsigned long)time_of_boot)
+ + ((unsigned long)pp->start_time)
+ / Hertz
+ );
+ return snprintf(outbuf, COLWID, "%24.24s", ctime(&t));
+}
+
+/* Unix98 specifies a STIME header for a column that shows the start
+ * time of the process, but does not specify a format or format specifier.
+ * From the general Unix98 rules, we know there must not be any spaces.
+ * Most systems violate that rule, though the Solaris documentation
+ * claims to print the column without spaces. (NOT!)
+ *
+ * So this isn't broken, but could be renamed to u98_std_stime,
+ * as long as it still shows as STIME when using the -f option.
+ */
+static int pr_stime(void){
+ struct tm *proc_time;
+ struct tm *our_time;
+ time_t t;
+ char *fmt;
+ int tm_year;
+ int tm_yday;
+ our_time = localtime(&seconds_since_1970); /* not reentrant */
+ tm_year = our_time->tm_year;
+ tm_yday = our_time->tm_yday;
+ t = (time_t)(
+ ((unsigned long)time_of_boot)
+ + ((unsigned long)pp->start_time)
+ / Hertz
+ );
+ proc_time = localtime(&t); /* not reentrant, this corrupts our_time */
+ fmt = "%H:%M"; /* 03:02 23:59 */
+ if(tm_yday != proc_time->tm_yday) fmt = "%b%d"; /* Jun06 Aug27 */
+ if(tm_year != proc_time->tm_year) fmt = "%Y"; /* 1991 2001 */
+ return strftime(outbuf, 42, fmt, proc_time);
+}
+
+static int pr_start(void){
+ time_t t;
+ char *str;
+ t = (
+ ((unsigned long)time_of_boot)
+ + ((unsigned long)pp->start_time)
+ / Hertz
+ );
+ str = ctime(&t);
+ if(str[8]==' ') str[8]='0';
+ if(str[11]==' ') str[11]='0';
+ if((unsigned long)t+60*60*24 > seconds_since_1970)
+ return snprintf(outbuf, COLWID, "%8.8s", str+11);
+ return snprintf(outbuf, COLWID, " %6.6s", str+4);
+}
+
+
+#ifdef SIGNAL_STRING
+static int help_pr_sig(const char *sig){
+ long len = 0;
+ len = strlen(sig);
+ if(wide_signals){
+ if(len>8) return snprintf(outbuf, COLWID, "%s", sig);
+ return snprintf(outbuf, COLWID, "00000000%s", sig);
+ }
+ if(len-strspn(sig,"0") > 8)
+ return snprintf(outbuf, COLWID, "<%s", sig+len-8);
+ return snprintf(outbuf, COLWID, "%s", sig+len-8);
+}
+#else
+static int help_pr_sig(unsigned long long sig){
+ if(wide_signals) return snprintf(outbuf, COLWID, "%016Lx", sig);
+ if(sig>>32) return snprintf(outbuf, COLWID, "<%08Lx", sig&0xffffffffLL);
+ return snprintf(outbuf, COLWID, "%08Lx", sig&0xffffffffLL);
+}
+#endif
+
+static int pr_sig(void){
+ return help_pr_sig(pp->signal);
+}
+static int pr_sigmask(void){
+ return help_pr_sig(pp->blocked);
+}
+static int pr_sigignore(void){
+ return help_pr_sig(pp->sigignore);
+}
+static int pr_sigcatch(void){
+ return help_pr_sig(pp->sigcatch);
+}
+
+
+static int pr_egid(void){
+ return snprintf(outbuf, COLWID, "%d", pp->egid);
+}
+static int pr_rgid(void){
+ return snprintf(outbuf, COLWID, "%d", pp->rgid);
+}
+static int pr_sgid(void){
+ return snprintf(outbuf, COLWID, "%d", pp->sgid);
+}
+static int pr_fgid(void){
+ return snprintf(outbuf, COLWID, "%d", pp->fgid);
+}
+static int pr_ruid(void){
+ return snprintf(outbuf, COLWID, "%d", pp->ruid);
+}
+static int pr_suid(void){
+ return snprintf(outbuf, COLWID, "%d", pp->suid);
+}
+static int pr_fuid(void){
+ return snprintf(outbuf, COLWID, "%d", pp->fuid);
+}
+
+
+static int pr_fgroup(void){
+ if(strlen(pp->fgroup)>max_rightward) return snprintf(outbuf, COLWID, "%d", pp->fgid);
+ return snprintf(outbuf, COLWID, "%s", pp->fgroup);
+}
+static int pr_sgroup(void){
+ if(strlen(pp->sgroup)>max_rightward) return snprintf(outbuf, COLWID, "%d", pp->sgid);
+ return snprintf(outbuf, COLWID, "%s", pp->sgroup);
+}
+static int pr_fuser(void){
+ if(user_is_number || (strlen(pp->fuser)>max_rightward)) return snprintf(outbuf, COLWID, "%d", pp->fuid);
+ return snprintf(outbuf, COLWID, "%s", pp->fuser);
+}
+static int pr_suser(void){
+ if(user_is_number || (strlen(pp->suser)>max_rightward)) return snprintf(outbuf, COLWID, "%d", pp->suid);
+ return snprintf(outbuf, COLWID, "%s", pp->suser);
+}
+
+
+static int pr_thread(void){ /* TID tid LWP lwp SPID spid */
+ return snprintf(outbuf, COLWID, "%u", pp->pid); /* for now... FIXME */
+}
+static int pr_nlwp(void){ /* THCNT thcount NLWP nlwp */
+ return snprintf(outbuf, COLWID, "-"); /* for now... FIXME */
+}
+
+static int pr_sess(void){
+ return snprintf(outbuf, COLWID, "%u", pp->session);
+}
+static int pr_tpgid(void){
+ return snprintf(outbuf, COLWID, "%d", pp->tpgid);
+}
+
+
+/* SGI uses "cpu" to print the processor ID with header "P" */
+static int pr_sgi_p(void){ /* FIXME */
+ if(pp->state == 'R') return snprintf(outbuf, COLWID, "%d", pp->processor);
+ return snprintf(outbuf, COLWID, "*");
+}
+
+
+
+/***************************************************************************/
+/*************************** other stuff ***********************************/
+
+/*
+ * Old header specifications.
+ *
+ * short Up " PID TTY STAT TIME COMMAND"
+ * long l Pp " FLAGS UID PID PPID PRI NI SIZE RSS WCHAN STA TTY TIME COMMAND
+ * user u up "USER PID %CPU %MEM SIZE RSS TTY STAT START TIME COMMAND
+ * jobs j gPp " PPID PID PGID SID TTY TPGID STAT UID TIME COMMAND
+ * sig s p " UID PID SIGNAL BLOCKED IGNORED CATCHED STAT TTY TIME COMMAND
+ * vm v r " PID TTY STAT TIME PAGEIN TSIZ DSIZ RSS LIM %MEM COMMAND
+ * m m r " PID TTY MAJFLT MINFLT TRS DRS SIZE SWAP RSS SHRD LIB DT COMMAND
+ * regs X p "NR PID STACK ESP EIP TMOUT ALARM STAT TTY TIME COMMAND
+ */
+
+/*
+ * Unix98 requires that the heading for tty is TT, though XPG4, Digital,
+ * and BSD use TTY. The Unix98 headers are:
+ * args,comm,etime,group,nice,pcpu,pgid
+ * pid,ppid,rgroup,ruser,time,tty,user,vsz
+ *
+ * BSD c: "command" becomes accounting name ("comm" or "ucomm")
+ * BSD n: "user" becomes "uid" and "wchan" becomes "nwchan" (number)
+ */
+
+/* short names to save space */
+#define MEM PROC_FILLMEM /* read statm */
+#define CMD PROC_FILLCMD /* read cmdline */
+#define ENV PROC_FILLENV /* read environ */
+#define USR PROC_FILLUSR /* uid_t and gid_t -> user and group names */
+#define BUG PROC_FILLBUG /* what does this need? */
+
+/* TODO
+ * pull out annoying BSD aliases into another table (to macro table?)
+ * add sorting functions here (to unify names)
+ */
+
+/* temporary hack -- mark new stuff grabbed from Debian ps */
+#define LNx LNX
+
+/* there are about 195 listed */
+
+/* Many of these are placeholders for unsupported options. */
+static const format_struct format_array[] = {
+/* code header print() sort() width ? vendor flags */
+{"%cpu", "%CPU", pr_pcpu, sr_pcpu, 4, 0, BSD, RIGHT}, /*pcpu*/
+{"%mem", "%MEM", pr_pmem, sr_nop, 4, 0, BSD, RIGHT}, /*pmem*/
+{"acflag", "ACFLG", pr_nop, sr_nop, 5, 0, XXX, RIGHT}, /*acflg*/
+{"acflg", "ACFLG", pr_nop, sr_nop, 5, 0, BSD, RIGHT}, /*acflag*/
+{"addr", "ADDR", pr_nop, sr_nop, 4, 0, XXX, RIGHT},
+{"addr_1", "ADDR", pr_nop, sr_nop, 1, 0, LNX, LEFT},
+{"alarm", "ALARM", pr_alarm, sr_it_real_value, 5, 0, LNX, RIGHT},
+{"argc", "ARGC", pr_nop, sr_nop, 4, 0, LNX, RIGHT},
+{"args", "COMMAND", pr_args, sr_nop, 16, 0, U98, UNLIMITED}, /*command*/
+{"atime", "TIME", pr_time, sr_nop, 8, 0, SOE, CUMUL|RIGHT}, /*cputime*/ /* was 6 wide */
+{"blocked", "BLOCKED", pr_sigmask, sr_nop, 9, 0, BSD, SIGNAL}, /*sigmask*/
+{"bnd", "BND", pr_nop, sr_nop, 1, 0, AIX, RIGHT},
+{"bsdstart", "START", pr_bsdstart, sr_nop, 6, 0, LNX, RIGHT},
+{"bsdtime", "TIME", pr_bsdtime, sr_nop, 6, 0, LNX, RIGHT},
+{"c", "C", pr_c, sr_pcpu, 2, 0, SUN, RIGHT},
+{"caught", "CAUGHT", pr_sigcatch, sr_nop, 9, 0, BSD, SIGNAL}, /*sigcatch*/
+{"class", "CLS", pr_nop, sr_nop, 5, 0, XXX, RIGHT},
+{"cls", "-", pr_nop, sr_nop, 1, 0, HPU, RIGHT},
+{"cmaj_flt", "-", pr_nop, sr_cmaj_flt, 1, 0, LNX, RIGHT},
+{"cmd", "CMD", pr_args, sr_cmd, 16, 0, DEC, UNLIMITED}, /*ucomm*/
+{"cmin_flt", "-", pr_nop, sr_cmin_flt, 1, 0, LNX, RIGHT},
+{"cnswap", "-", pr_nop, sr_cnswap, 1, 0, LNX, RIGHT},
+{"comm", "COMMAND", pr_comm, sr_nop, 16, 0, U98, UNLIMITED}, /*ucomm*/
+{"command", "COMMAND", pr_args, sr_nop, 16, 0, XXX, UNLIMITED}, /*args*/
+{"cp", "CP", pr_cp, sr_pcpu, 3, 0, DEC, RIGHT}, /*cpu*/
+{"cpu", "CPU", pr_nop, sr_nop, 3, 0, BSD, RIGHT}, /* FIXME ... HP-UX wants this as the CPU number for SMP? */
+{"cputime", "TIME", pr_time, sr_nop, 8, 0, DEC, RIGHT}, /*time*/
+{"cstime", "-", pr_nop, sr_cstime, 1, 0, LNX, RIGHT},
+{"cursig", "CURSIG", pr_nop, sr_nop, 6, 0, DEC, RIGHT},
+{"cutime", "-", pr_nop, sr_cutime, 1, 0, LNX, RIGHT},
+{"cwd", "CWD", pr_nop, sr_nop, 3, 0, LNX, LEFT},
+{"drs", "DRS", pr_drs, sr_drs, 4, 0, LNX, RIGHT},
+{"dsiz", "DSIZ", pr_dsiz, sr_nop, 4, 0, LNX, RIGHT},
+{"egid", "EGID", pr_egid, sr_egid, 5, 0, LNX, RIGHT},
+{"egroup", "EGROUP", pr_egroup, sr_egroup, 8, 0, LNX, USER},
+{"eip", "EIP", pr_eip, sr_kstk_eip, 8, 0, LNX, RIGHT},
+{"end_code", "E_CODE", pr_nop, sr_end_code, 8, 0, LNx, RIGHT},
+{"environ","ENVIRONMENT",pr_nop, sr_nop, 11, 0, LNx, UNLIMITED},
+{"esp", "ESP", pr_esp, sr_kstk_esp, 8, 0, LNX, RIGHT},
+{"etime", "ELAPSED", pr_etime, sr_nop, 11, 0, U98, RIGHT}, /* was 7 wide */
+{"euid", "EUID", pr_euid, sr_euid, 5, 0, LNX, RIGHT},
+{"euser", "EUSER", pr_euser, sr_euser, 8, 0, LNX, USER},
+{"f", "F", pr_flag, sr_nop, 3, 0, XXX, RIGHT}, /*flags*/
+{"fgid", "FGID", pr_fgid, sr_fgid, 5, 0, LNX, RIGHT},
+{"fgroup", "FGROUP", pr_fgroup, sr_fgroup, 8, 0, LNX, USER},
+{"flag", "F", pr_flag, sr_flags, 3, 0, DEC, RIGHT},
+{"flags", "F", pr_flag, sr_flags, 3, 0, BSD, RIGHT}, /*f*/ /* was FLAGS, 8 wide */
+{"fname", "COMMAND", pr_fname, sr_nop, 8, 0, SUN, LEFT},
+{"fsgid", "FSGID", pr_fgid, sr_fgid, 5, 0, LNX, RIGHT},
+{"fsgroup", "FSGROUP", pr_fgroup, sr_fgroup, 8, 0, LNX, USER},
+{"fsuid", "FSUID", pr_fuid, sr_fuid, 5, 0, LNX, RIGHT},
+{"fsuser", "FSUSER", pr_fuser, sr_fuser, 8, 0, LNX, USER},
+{"fuid", "FUID", pr_fuid, sr_fuid, 5, 0, LNX, RIGHT},
+{"fuser", "FUSER", pr_fuser, sr_fuser, 8, 0, LNX, USER},
+{"gid", "GID", pr_egid, sr_egid, 5, 0, SUN, RIGHT},
+{"group", "GROUP", pr_egroup, sr_egroup, 5, 0, U98, USER}, /* was 8 wide */
+{"ignored", "IGNORED", pr_sigignore,sr_nop, 9, 0, BSD, SIGNAL}, /*sigignore*/
+{"inblk", "INBLK", pr_nop, sr_nop, 5, 0, BSD, RIGHT}, /*inblock*/
+{"inblock", "INBLK", pr_nop, sr_nop, 5, 0, DEC, RIGHT}, /*inblk*/
+{"intpri", "PRI", pr_opri, sr_priority, 3, 0, HPU, RIGHT},
+{"jobc", "JOBC", pr_nop, sr_nop, 4, 0, XXX, RIGHT},
+{"ktrace", "KTRACE", pr_nop, sr_nop, 8, 0, BSD, RIGHT},
+{"ktracep", "KTRACEP", pr_nop, sr_nop, 8, 0, BSD, RIGHT},
+{"label", "LABEL", pr_nop, sr_nop, 25, 0, SGI, LEFT},
+{"lim", "LIM", pr_lim, sr_rss_rlim, 5, 0, BSD, RIGHT},
+{"login", "LOGNAME", pr_nop, sr_nop, 8, 0, BSD, LEFT}, /*logname*/ /* double check */
+{"logname", "LOGNAME", pr_nop, sr_nop, 8, 0, XXX, LEFT}, /*login*/
+{"longtname", "TTY", pr_tty8, sr_tty, 8, 0, DEC, LEFT},
+{"lstart", "STARTED", pr_lstart, sr_nop, 24, 0, XXX, RIGHT},
+{"luid", "LUID", pr_nop, sr_nop, 5, 0, LNX, RIGHT}, /* login ID */
+{"luser", "LUSER", pr_nop, sr_nop, 8, 0, LNX, USER}, /* login USER */
+{"lwp", "LWP", pr_thread, sr_nop, 5, 0, SUN, RIGHT},
+{"m_drs", "DRS", pr_drs, sr_drs, 5, 0, LNx, RIGHT},
+{"m_dt", "DT", pr_nop, sr_dt, 4, 0, LNx, RIGHT},
+{"m_lrs", "LRS", pr_nop, sr_lrs, 5, 0, LNx, RIGHT},
+{"m_resident", "RES", pr_nop, sr_resident, 5, 0, LNx, RIGHT},
+{"m_share", "SHRD", pr_nop, sr_share, 5, 0, LNx, RIGHT},
+{"m_size", "SIZE", pr_nop, sr_size, 5, 0, LNx, RIGHT},
+{"m_swap", "SWAP", pr_nop, sr_nop, 5, 0, LNx, RIGHT},
+{"m_trs", "TRS", pr_trs, sr_trs, 5, 0, LNx, RIGHT},
+{"maj_flt", "MAJFL", pr_majflt, sr_maj_flt, 6, 0, LNX, CUMUL|RIGHT},
+{"majflt", "MAJFLT", pr_majflt, sr_maj_flt, 6, 0, XXX, RIGHT},
+{"min_flt", "MINFL", pr_minflt, sr_min_flt, 6, 0, LNX, CUMUL|RIGHT},
+{"minflt", "MINFLT", pr_minflt, sr_min_flt, 6, 0, XXX, RIGHT},
+{"msgrcv", "MSGRCV", pr_nop, sr_nop, 6, 0, XXX, RIGHT},
+{"msgsnd", "MSGSND", pr_nop, sr_nop, 6, 0, XXX, RIGHT},
+{"ni", "NI", pr_nice, sr_nice, 3, 0, BSD, RIGHT}, /*nice*/
+{"nice", "NI", pr_nice, sr_nice, 3, 0, U98, RIGHT}, /*ni*/
+{"nivcsw", "IVCSW", pr_nop, sr_nop, 5, 0, XXX, RIGHT},
+{"nlwp", "NLWP", pr_nlwp, sr_nop, 4, 0, SUN, RIGHT},
+{"nsignals", "NSIGS", pr_nop, sr_nop, 5, 0, DEC, RIGHT}, /*nsigs*/
+{"nsigs", "NSIGS", pr_nop, sr_nop, 5, 0, BSD, RIGHT}, /*nsignals*/
+{"nswap", "NSWAP", pr_nop, sr_nswap, 5, 0, XXX, RIGHT},
+{"nvcsw", "VCSW", pr_nop, sr_nop, 5, 0, XXX, RIGHT},
+{"nwchan", "WCHAN", pr_nwchan, sr_nop, 6, 0, XXX, RIGHT},
+{"opri", "PRI", pr_opri, sr_priority, 3, 0, SUN, RIGHT},
+{"osz", "SZ", pr_nop, sr_nop, 2, 0, SUN, RIGHT},
+{"oublk", "OUBLK", pr_nop, sr_nop, 5, 0, BSD, RIGHT}, /*oublock*/
+{"oublock", "OUBLK", pr_nop, sr_nop, 5, 0, DEC, RIGHT}, /*oublk*/
+{"p_ru", "P_RU", pr_nop, sr_nop, 6, 0, BSD, RIGHT},
+{"paddr", "PADDR", pr_nop, sr_nop, 6, 0, BSD, RIGHT},
+{"pagein", "PAGEIN", pr_majflt, sr_nop, 6, 0, XXX, RIGHT},
+{"pcpu", "%CPU", pr_pcpu, sr_pcpu, 4, 0, U98, RIGHT}, /*%cpu*/
+{"pending", "PENDING", pr_sig, sr_nop, 9, 0, BSD, SIGNAL}, /*sig*/
+{"pgid", "PGID", pr_pgid, sr_pgrp, 5, 0, U98, RIGHT},
+{"pgrp", "PGRP", pr_pgid, sr_pgrp, 5, 0, LNX, RIGHT},
+{"pid", "PID", pr_pid, sr_pid, 5, 0, U98, RIGHT},
+{"pmem", "%MEM", pr_pmem, sr_nop, 4, 0, XXX, RIGHT}, /*%mem*/
+{"poip", "-", pr_nop, sr_nop, 1, 0, BSD, RIGHT},
+{"policy", "POL", pr_nop, sr_nop, 3, 0, DEC, RIGHT},
+{"ppid", "PPID", pr_ppid, sr_ppid, 5, 0, U98, RIGHT},
+{"pri", "PRI", pr_pri, sr_nop, 3, 0, XXX, RIGHT},
+{"priority", "PRI", pr_priority, sr_priority, 3, 0, LNX, RIGHT}, /*ni,nice*/ /* from Linux sorting names */
+{"prmgrp", "-", pr_nop, sr_nop, 1, 0, HPU, RIGHT},
+{"prmid", "-", pr_nop, sr_nop, 1, 0, HPU, RIGHT},
+{"pset", "PSET", pr_nop, sr_nop, 4, 0, DEC, RIGHT},
+{"psr", "PSR", pr_psr, sr_nop, 3, 0, DEC, RIGHT},
+{"psxpri", "PPR", pr_nop, sr_nop, 3, 0, DEC, RIGHT},
+{"re", "RE", pr_nop, sr_nop, 3, 0, BSD, RIGHT},
+{"resident", "RES", pr_nop, sr_resident, 5, 0, LNX, RIGHT},
+{"rgid", "RGID", pr_rgid, sr_rgid, 5, 0, XXX, RIGHT},
+{"rgroup", "RGROUP", pr_rgroup, sr_rgroup, 6, 0, U98, USER}, /* was 8 wide */
+{"rlink", "RLINK", pr_nop, sr_nop, 8, 0, BSD, RIGHT},
+{"rss", "RSS", pr_rss, sr_rss, 4, 0, XXX, RIGHT}, /* was 5 wide */
+{"rssize", "RSS", pr_rss, sr_vm_rss, 4, 0, DEC, RIGHT}, /*rsz*/
+{"rsz", "RSZ", pr_rss, sr_vm_rss, 4, 0, BSD, RIGHT}, /*rssize*/
+{"rtprio", "RTPRIO", pr_nop, sr_nop, 7, 0, BSD, RIGHT},
+{"ruid", "RUID", pr_ruid, sr_ruid, 5, 0, XXX, RIGHT},
+{"ruser", "RUSER", pr_ruser, sr_ruser, 8, 0, U98, USER},
+{"s", "S", pr_s, sr_state, 1, 0, SUN, LEFT}, /*stat,state*/
+{"sched", "SCH", pr_nop, sr_nop, 1, 0, AIX, RIGHT},
+{"scnt", "SCNT", pr_nop, sr_nop, 4, 0, DEC, RIGHT}, /* man page misspelling of scount? */
+{"scount", "SC", pr_nop, sr_nop, 4, 0, AIX, RIGHT}, /* scnt==scount, DEC claims both */
+{"sess", "SESS", pr_sess, sr_session, 5, 0, XXX, RIGHT},
+{"session", "SESS", pr_sess, sr_session, 5, 0, LNX, RIGHT},
+{"sgi_p", "P", pr_sgi_p, sr_nop, 1, 0, LNX, RIGHT}, /* "cpu" number */
+{"sgi_rss", "RSS", pr_rss, sr_nop, 4, 0, LNX, LEFT}, /* SZ:RSS */
+{"sgid", "SGID", pr_sgid, sr_sgid, 5, 0, LNX, RIGHT},
+{"sgroup", "SGROUP", pr_sgroup, sr_sgroup, 8, 0, LNX, USER},
+{"share", "-", pr_nop, sr_share, 1, 0, LNX, RIGHT},
+{"sid", "SID", pr_sess, sr_session, 5, 0, XXX, RIGHT}, /* Sun & HP */
+{"sig", "PENDING", pr_sig, sr_nop, 9, 0, XXX, SIGNAL}, /*pending*/
+{"sig_block", "BLOCKED", pr_sigmask, sr_nop, 9, 0, LNX, SIGNAL},
+{"sig_catch", "CATCHED", pr_sigcatch, sr_nop, 9, 0, LNX, SIGNAL},
+{"sig_ignore", "IGNORED",pr_sigignore, sr_nop, 9, 0, LNX, SIGNAL},
+{"sig_pend", "SIGNAL", pr_sig, sr_nop, 9, 0, LNX, SIGNAL},
+{"sigcatch", "CAUGHT", pr_sigcatch, sr_nop, 9, 0, XXX, SIGNAL}, /*caught*/
+{"sigignore", "IGNORED", pr_sigignore,sr_nop, 9, 0, XXX, SIGNAL}, /*ignored*/
+{"sigmask", "BLOCKED", pr_sigmask, sr_nop, 9, 0, XXX, SIGNAL}, /*blocked*/
+{"size", "-", pr_nop, sr_size, 1, 0, SCO, RIGHT},
+{"sl", "SL", pr_nop, sr_nop, 3, 0, XXX, RIGHT},
+{"spid", "SPID", pr_thread, sr_nop, 5, 0, SGI, RIGHT},
+{"stackp", "STACKP", pr_stackp, sr_nop, 8, 0, LNX, RIGHT}, /*start_stack*/
+{"start", "STARTED", pr_start, sr_nop, 8, 0, XXX, RIGHT},
+{"start_code", "S_CODE", pr_nop, sr_start_code, 8, 0, LNx, RIGHT},
+{"start_stack", "STACKP", pr_stackp, sr_start_stack, 8, 0, LNX, RIGHT}, /*stackp*/
+{"start_time", "START", pr_stime, sr_start_time, 5, 0, LNx, RIGHT},
+{"stat", "STAT", pr_stat, sr_state, 4, 0, BSD, LEFT}, /*state,s*/
+{"state", "S", pr_s, sr_state, 1, 0, XXX, LEFT}, /*stat,s*/ /* was STAT */
+{"status", "STATUS", pr_nop, sr_nop, 6, 0, DEC, RIGHT},
+{"stime", "STIME", pr_stime, sr_stime, 5, 0, XXX, /* CUMUL| */RIGHT}, /* was 6 wide */
+{"suid", "SUID", pr_suid, sr_suid, 5, 0, LNx, RIGHT},
+{"suser", "SUSER", pr_suser, sr_suser, 8, 0, LNx, USER},
+{"svgid", "SVGID", pr_sgid, sr_sgid, 5, 0, XXX, RIGHT},
+{"svgroup", "SVGROUP", pr_sgroup, sr_sgroup, 8, 0, LNX, USER},
+{"svuid", "SVUID", pr_suid, sr_suid, 5, 0, XXX, RIGHT},
+{"svuser", "SVUSER", pr_suser, sr_suser, 8, 0, LNX, USER},
+{"systime", "SYSTEM", pr_nop, sr_nop, 6, 0, DEC, RIGHT},
+{"sz", "SZ", pr_sz, sr_nop, 5, 0, HPU, RIGHT},
+{"tdev", "TDEV", pr_nop, sr_nop, 4, 0, XXX, RIGHT},
+{"thcount", "THCNT", pr_nlwp, sr_nop, 5, 0, AIX, RIGHT},
+{"tid", "TID", pr_thread, sr_nop, 5, 0, AIX, RIGHT},
+{"time", "TIME", pr_time, sr_nop, 8, 0, U98, CUMUL|RIGHT}, /*cputime*/ /* was 6 wide */
+{"timeout", "TMOUT", pr_timeout, sr_timeout, 5, 0, LNX, RIGHT},
+{"tmout", "TMOUT", pr_timeout, sr_timeout, 5, 0, LNX, RIGHT},
+{"tname", "TTY", pr_tty8, sr_tty, 8, 0, DEC, LEFT},
+{"tpgid", "TPGID", pr_tpgid, sr_tpgid, 5, 0, XXX, RIGHT},
+{"trs", "TRS", pr_trs, sr_trs, 4, 0, AIX, RIGHT},
+{"trss", "TRSS", pr_trs, sr_trs, 4, 0, BSD, RIGHT}, /* 4.3BSD NET/2 */
+{"tsess", "TSESS", pr_nop, sr_nop, 5, 0, BSD, RIGHT},
+{"tsession", "TSESS", pr_nop, sr_nop, 5, 0, DEC, RIGHT},
+{"tsiz", "TSIZ", pr_tsiz, sr_nop, 4, 0, BSD, RIGHT},
+{"tt", "TT", pr_tty8, sr_tty, 8, 0, BSD, LEFT},
+{"tty", "TT", pr_tty8, sr_tty, 8, 0, U98, LEFT}, /* Unix98 requires "TT" but has "TTY" too. :-( */ /* was 3 wide */
+{"tty4", "TTY", pr_tty4, sr_tty, 4, 0, LNX, LEFT},
+{"tty8", "TTY", pr_tty8, sr_tty, 8, 0, LNX, LEFT},
+{"u_procp", "UPROCP", pr_nop, sr_nop, 6, 0, DEC, RIGHT},
+{"ucmd", "CMD", pr_comm, sr_cmd, 16, 0, DEC, UNLIMITED}, /*ucomm*/
+{"ucomm", "COMMAND", pr_comm, sr_nop, 16, 0, XXX, UNLIMITED}, /*comm*/
+{"uid", "UID", pr_euid, sr_euid, 5, 0, XXX, RIGHT},
+{"uid_hack", "UID", pr_euser, sr_nop, 8, 0, XXX, USER},
+{"umask", "UMASK", pr_nop, sr_nop, 5, 0, DEC, RIGHT},
+{"uname", "USER", pr_euser, sr_euser, 8, 0, DEC, USER}, /* man page misspelling of user? */
+{"upr", "UPR", pr_nop, sr_nop, 3, 0, BSD, RIGHT}, /*usrpri*/
+{"uprocp", "-", pr_nop, sr_nop, 1, 0, BSD, RIGHT},
+{"user", "USER", pr_euser, sr_euser, 8, 0, U98, USER}, /* BSD n forces this to UID */
+{"usertime", "USER", pr_nop, sr_nop, 4, 0, DEC, RIGHT},
+{"usrpri", "UPR", pr_nop, sr_nop, 3, 0, DEC, RIGHT}, /*upr*/
+{"utime", "UTIME", pr_nop, sr_utime, 6, 0, LNx, CUMUL|RIGHT},
+{"vm_data", "DATA", pr_nop, sr_vm_data, 5, 0, LNx, RIGHT},
+{"vm_exe", "EXE", pr_nop, sr_vm_exe, 5, 0, LNx, RIGHT},
+{"vm_lib", "LIB", pr_nop, sr_vm_lib, 5, 0, LNx, RIGHT},
+{"vm_lock", "LCK", pr_nop, sr_vm_lock, 3, 0, LNx, RIGHT},
+{"vm_stack", "STACK", pr_nop, sr_vm_stack, 5, 0, LNx, RIGHT},
+{"vsize", "VSZ", pr_vsz, sr_vsize, 5, 0, DEC, RIGHT}, /*vsz*/
+{"vsz", "VSZ", pr_vsz, sr_vm_size, 5, 0, U98, RIGHT}, /*vsize*/
+{"wchan", "WCHAN", pr_wchan, sr_wchan, 6, 0, XXX, WCHAN}, /* BSD n forces this to nwchan */ /* was 10 wide */
+{"wname", "WCHAN", pr_wname, sr_nop, 6, 0, SGI, WCHAN}, /* opposite of nwchan */
+{"xstat", "XSTAT", pr_nop, sr_nop, 5, 0, BSD, RIGHT},
+{"~", "-", pr_nop, sr_nop, 1, 0, LNX, RIGHT} /* NULL would ruin alphabetical order */
+};
+
+static const int format_array_count = sizeof(format_array)/sizeof(format_struct);
+
+
+/****************************** Macro formats *******************************/
+/* First X field may be NR, which is p->start_code>>26 printed with %2ld */
+/* That seems useless though, and Debian already killed it. */
+/* The ones marked "Digital" have the name defined, not just the data. */
+static const macro_struct macro_array[] = {
+{"DFMT", "pid,tname,state,cputime,cmd"}, /* Digital's default */
+{"DefBSD", "pid,tname,stat,bsdtime,args"}, /* Our BSD default */
+{"DefSysV", "pid,tname,time,cmd"}, /* Our SysV default */
+{"END_BSD", "state,tname,cputime,comm"}, /* trailer for O */
+{"END_SYS5", "state,tname,time,command"}, /* trailer for -O */
+{"F5FMT", "uname,pid,ppid,c,start,tname,time,cmd"}, /* Digital -f */
+
+{"FB_", "pid,tt,stat,time,command"}, /* FreeBSD default */
+{"FB_j", "user,pid,ppid,pgid,sess,jobc,stat,tt,time,command"}, /* FreeBSD j */
+{"FB_l", "uid,pid,ppid,cpu,pri,nice,vsz,rss,wchan,stat,tt,time,command"}, /* FreeBSD l */
+{"FB_u", "user,pid,pcpu,pmem,vsz,rss,tt,stat,start,time,command"}, /* FreeBSD u */
+{"FB_v", "pid,stat,time,sl,re,pagein,vsz,rss,lim,tsiz,pcpu,pmem,command"}, /* FreeBSD v */
+
+{"FD_", "pid,tty,time,comm"}, /* Fictional Debian SysV default */
+{"FD_f", "user,pid,ppid,start_time,tty,time,comm"}, /* Fictional Debian -f */
+{"FD_fj", "user,pid,ppid,start_time,tty,time,pgid,sid,comm"}, /* Fictional Debian -jf */
+{"FD_j", "pid,tty,time,pgid,sid,comm"}, /* Fictional Debian -j */
+{"FD_l", "flags,state,uid,pid,ppid,priority,nice,vsz,wchan,tty,time,comm"}, /* Fictional Debian -l */
+{"FD_lj", "flags,state,uid,pid,ppid,priority,nice,vsz,wchan,tty,time,pgid,sid,comm"}, /* Fictional Debian -jl */
+
+{"FL5FMT", "f,state,uid,pid,ppid,pcpu,pri,nice,rss,wchan,start,time,command"}, /* Digital -fl */
+
+{"HP_", "pid,tty,time,comm"}, /* HP default */
+{"HP_f", "user,pid,ppid,cpu,stime,tty,time,args"}, /* HP -f */
+{"HP_fl", "flags,state,user,pid,ppid,cpu,intpri,nice,addr,sz,wchan,stime,tty,time,args"}, /* HP -fl */
+{"HP_l", "flags,state,uid,pid,ppid,cpu,intpri,nice,addr,sz,wchan,tty,time,comm"}, /* HP -l */
+
+{"J390", "pid,sid,pgrp,tname,atime,args"}, /* OS/390 -j */
+{"JFMT", "user,pid,ppid,pgid,sess,jobc,state,tname,cputime,command"}, /* Digital j and -j */
+{"L5FMT", "f,state,uid,pid,ppid,c,pri,nice,addr,sz,wchan,tt,time,ucmd"}, /* Digital -l */
+{"LFMT", "uid,pid,ppid,cp,pri,nice,vsz,rss,wchan,state,tname,cputime,command"}, /* Digital l */
+
+{"OL_X", "pid,start_stack,esp,eip,timeout,alarm,stat,tname,bsdtime,args"}, /* Old i386 Linux X */
+{"OL_j", "ppid,pid,pgid,sid,tname,tpgid,stat,uid,bsdtime,args"}, /* Old Linux j */
+{"OL_l", "flags,uid,pid,ppid,priority,nice,vsz,rss,wchan,stat,tname,bsdtime,args"}, /* Old Linux l */
+{"OL_m", "pid,tname,majflt,minflt,m_trs,m_drs,m_size,m_swap,rss,m_share,vm_lib,m_dt,args"}, /* Old Linux m */
+{"OL_s", "uid,pid,pending,sig_block,sig_ignore,caught,stat,tname,bsdtime,args"}, /* Old Linux s */
+{"OL_u", "user,pid,pcpu,pmem,vsz,rss,tname,stat,start_time,bsdtime,args"}, /* Old Linux u */
+{"OL_v", "pid,tname,stat,bsdtime,maj_flt,m_trs,m_drs,rss,pmem,args"}, /* Old Linux v */
+
+{"RD_", "pid,tname,state,bsdtime,comm"}, /* Real Debian default */
+{"RD_f", "uid,pid,ppid,start_time,tname,bsdtime,args"}, /* Real Debian -f */
+{"RD_fj", "uid,pid,ppid,start_time,tname,bsdtime,pgid,sid,args"}, /* Real Debian -jf */
+{"RD_j", "pid,tname,state,bsdtime,pgid,sid,comm"}, /* Real Debian -j */
+{"RD_l", "flags,state,uid,pid,ppid,priority,nice,wchan,tname,bsdtime,comm"}, /* Real Debian -l */
+{"RD_lj", "flags,state,uid,pid,ppid,priority,nice,wchan,tname,bsdtime,pgid,sid,comm"}, /* Real Debian -jl */
+
+{"RUSAGE", "minflt,majflt,nswap,inblock,oublock,msgsnd,msgrcv,nsigs,nvcsw,nivcsw"}, /* Digital -o "RUSAGE" */
+{"SCHED", "user,pcpu,pri,usrpri,nice,psxpri,psr,policy,pset"}, /* Digital -o "SCHED" */
+{"SFMT", "uid,pid,cursig,sig,sigmask,sigignore,sigcatch,stat,tname,command"}, /* Digital s */
+
+{"Std_f", "uid_hack,pid,ppid,c,stime,tname,time,cmd"}, /* new -f */
+{"Std_fl", "f,s,uid_hack,pid,ppid,c,opri,ni,addr,sz,wchan,stime,tname,time,cmd"}, /* -fl */
+{"Std_l", "f,s,uid,pid,ppid,c,opri,ni,addr,sz,wchan,tname,time,ucmd"}, /* new -l */
+
+{"THREAD", "user,pcpu,pri,scnt,wchan,usertime,systime"}, /* Digital -o "THREAD" */
+{"UFMT", "uname,pid,pcpu,pmem,vsz,rss,tt,state,start,time,command"}, /* Digital u */
+{"VFMT", "pid,tt,state,time,sl,pagein,vsz,rss,pcpu,pmem,command"}, /* Digital v */
+{"~", "~"} /* NULL would ruin alphabetical order */
+};
+
+static const int macro_array_count = sizeof(macro_array)/sizeof(macro_struct);
+
+
+/*************************** AIX formats ********************/
+/* Convert AIX format codes to normal format specifiers. */
+static const aix_struct aix_array[] = {
+{'C', "pcpu", "%CPU"},
+{'G', "group", "GROUP"},
+{'P', "ppid", "PPID"},
+{'U', "user", "USER"},
+{'a', "args", "COMMAND"},
+{'c', "comm", "COMMAND"},
+{'g', "rgroup", "RGROUP"},
+{'n', "nice", "NI"},
+{'p', "pid", "PID"},
+{'r', "pgid", "PGID"},
+{'t', "etime", "ELAPSED"},
+{'u', "ruser", "RUSER"},
+{'x', "time", "TIME"},
+{'y', "tty", "TTY"},
+{'z', "vsz", "VSZ"},
+{'~', "~", "~"} /* NULL would ruin alphabetical order */
+};
+static const int aix_array_count = sizeof(aix_array)/sizeof(aix_struct);
+
+
+/********************* sorting ***************************/
+/* Convert short sorting codes to normal format specifiers. */
+static const shortsort_struct shortsort_array[] = {
+{'C', "pcpu" },
+{'G', "tpgid" },
+{'J', "cstime" },
+/* {'K', "stime" }, */ /* conflict, system vs. start time */
+{'M', "maj_flt" },
+{'N', "cmaj_flt" },
+{'P', "ppid" },
+{'R', "resident" },
+{'S', "share" },
+{'T', "start_time" },
+{'U', "uid" }, /* euid */
+{'c', "cmd" },
+{'f', "flags" },
+{'g', "pgrp" },
+{'j', "cutime" },
+{'k', "utime" },
+{'m', "min_flt" },
+{'n', "cmin_flt" },
+{'o', "session" },
+{'p', "pid" },
+{'r', "rss" },
+{'s', "size" },
+{'t', "tty" },
+{'u', "user" },
+{'v', "vsize" },
+{'y', "priority" }, /* nice */
+{'~', "~" } /* NULL would ruin alphabetical order */
+};
+static const int shortsort_array_count = sizeof(shortsort_array)/sizeof(shortsort_struct);
+
+
+/*********** print format_array **********/
+/* called by the parser in another file */
+void print_format_specifiers(void){
+ const format_struct *walk = format_array;
+ while(*(walk->spec) != '~'){
+ if(walk->pr != pr_nop) printf("%-12.12s %-8.8s\n", walk->spec, walk->head);
+ walk++;
+ }
+}
+
+/************ comparison functions for bsearch *************/
+
+static int compare_format_structs(const void *a, const void *b){
+ return strcmp(((format_struct*)a)->spec,((format_struct*)b)->spec);
+}
+
+static int compare_macro_structs(const void *a, const void *b){
+ return strcmp(((macro_struct*)a)->spec,((macro_struct*)b)->spec);
+}
+
+/******** look up structs as needed by the sort & format parsers ******/
+
+const shortsort_struct *search_shortsort_array(const int findme){
+ const shortsort_struct *walk = shortsort_array;
+ while(walk->desc != '~'){
+ if(walk->desc == findme) return walk;
+ walk++;
+ }
+ return NULL;
+}
+
+const aix_struct *search_aix_array(const int findme){
+ const aix_struct *walk = aix_array;
+ while(walk->desc != '~'){
+ if(walk->desc == findme) return walk;
+ walk++;
+ }
+ return NULL;
+}
+
+const format_struct *search_format_array(const char *findme){
+ format_struct key;
+ key.spec = findme;
+ return bsearch(&key, format_array, format_array_count,
+ sizeof(format_struct), compare_format_structs
+ );
+}
+
+const macro_struct *search_macro_array(const char *findme){
+ macro_struct key;
+ key.spec = findme;
+ return bsearch(&key, macro_array, macro_array_count,
+ sizeof(macro_struct), compare_macro_structs
+ );
+}
+
+static unsigned int active_cols; /* some multiple of screen_cols */
+
+/***** Last chance, avoid needless trunctuation. */
+static void check_header_width(void){
+ format_node *walk = format_list;
+ unsigned int total = 0;
+ int was_normal = 0;
+ unsigned int i = 0;
+ unsigned int sigs = 0;
+ while(walk){
+ switch((walk->flags) & JUST_MASK){
+ default:
+ total += walk->width;
+ total += was_normal;
+ was_normal = 1;
+ break;
+ case SIGNAL:
+ sigs++;
+ total += walk->width;
+ total += was_normal;
+ was_normal = 1;
+ break;
+ case UNLIMITED: /* could chop this a bit */
+ if(walk->next) total += walk->width;
+ else total += 3; /* not strlen(walk->name) */
+ total += was_normal;
+ was_normal = 1;
+ break;
+ case 0: /* AIX */
+ total += walk->width;
+ was_normal = 0;
+ break;
+ }
+ walk = walk->next;
+ }
+ for(;;){
+ i++;
+ active_cols = screen_cols * i;
+ if(active_cols>=total) break;
+ if(screen_cols*i >= OUTBUF_SIZE/2) break; /* can't go over */
+ }
+ wide_signals = (total+sigs*7 <= active_cols);
+
+#if 0
+ printf("123456789-123456789-123456789-123456789-"
+ "123456789-123456789-123456789-123456789\n");
+ printf("need %d, using %d\n", total, active_cols);
+#endif
+}
+
+
+/********** show one process (NULL proc prints header) **********/
+void show_one_proc(proc_t* p){
+ /* unknown: maybe set correct & actual to 1, remove +/- 1 below */
+ int correct = 0; /* screen position we should be at */
+ int actual = 0; /* screen position we are at */
+ int amount = 0; /* amount of text that this data is */
+ int leftpad = 0; /* amount of space this column _could_ need */
+ int space = 0; /* amount of space we actually need to print */
+ int dospace = 0; /* previous column determined that we need a space */
+ int legit = 0; /* legitimately stolen extra space */
+ format_node *fmt = format_list;
+ static int did_stuff = 0; /* have we ever printed anything? */
+
+ if(-1==(long)p){ /* true only once, at the end */
+ check_header_width(); /* temporary test code */
+ if(did_stuff) return;
+ /* have _never_ printed anything, but might need a header */
+ if(!--lines_to_next_header){
+ lines_to_next_header = header_gap;
+ show_one_proc(NULL);
+ }
+ /* fprintf(stderr, "No processes available.\n"); */ /* legal? */
+ exit(1);
+ }
+ if(p){ /* not header, maybe we should call ourselves for it */
+ if(!--lines_to_next_header){
+ lines_to_next_header = header_gap;
+ show_one_proc(NULL);
+ }
+ }
+ did_stuff = 1;
+ pp = p; /* global, the proc_t struct */
+ if(active_cols>(int)OUTBUF_SIZE) fprintf(stderr,"Fix bigness error.\n");
+
+ /* print row start sequence */
+ for(;;){
+ legit = 0;
+ /* set width suggestion which might be ignored */
+ if(fmt->next) max_rightward = fmt->width;
+ else max_rightward = active_cols-((correct>actual) ? correct : actual);
+ max_leftward = fmt->width + actual - correct; /* TODO check this */
+ /* prepare data and calculate leftpad */
+ if(p && fmt->pr) amount = (*fmt->pr)();
+ else amount = strlen(strcpy(outbuf, fmt->name)); /* AIX or headers */
+ switch((fmt->flags) & JUST_MASK){
+ case 0: /* for AIX, assigned outside this file */
+ leftpad = 0;
+ break;
+ case LEFT: /* bad */
+ leftpad = 0;
+ break;
+ case RIGHT: /* OK */
+ leftpad = fmt->width - amount;
+ if(leftpad < 0) leftpad = 0;
+ break;
+ case SIGNAL:
+ /* if the screen is wide enough, use full 16-character output */
+ if(wide_signals){
+ leftpad = 16 - amount;
+ legit = 7;
+ }else{
+ leftpad = 9 - amount;
+ }
+ if(leftpad < 0) leftpad = 0;
+ break;
+ case USER: /* bad */
+ leftpad = fmt->width - amount;
+ if(leftpad < 0) leftpad = 0;
+ if(!user_is_number) leftpad = 0;
+ break;
+ case WCHAN: /* bad */
+ if(wchan_is_number){
+ leftpad = fmt->width - amount;
+ if(leftpad < 0) leftpad = 0;
+ break;
+ }else{
+ if(fmt->next){
+ outbuf[fmt->width] = '\0'; /* Must chop, more columns! */
+ }else{
+ int chopspot; /* place to chop */
+ int tmpspace; /* need "space" before it is calculated below */
+ tmpspace = correct - actual;
+ if(tmpspace<1) tmpspace = dospace;
+ chopspot = active_cols-actual-tmpspace;
+ if(chopspot<1) chopspot=1; /* oops, we (mostly) lose this column... */
+ outbuf[chopspot] = '\0'; /* chop at screen/buffer limit */
+ }
+ leftpad = 0;
+ break;
+ }
+ case UNLIMITED:
+ if(fmt->next){
+ outbuf[fmt->width] = '\0'; /* Must chop, more columns! */
+ }else{
+ int chopspot; /* place to chop */
+ int tmpspace; /* need "space" before it is calculated below */
+ tmpspace = correct - actual;
+ if(tmpspace<1) tmpspace = dospace;
+ chopspot = active_cols-actual-tmpspace;
+ if(chopspot<1) chopspot=1; /* oops, we (mostly) lose this column... */
+ outbuf[chopspot] = '\0'; /* chop at screen/buffer limit */
+ }
+ leftpad = 0;
+ break;
+ default:
+ fputs("bad alignment code\n", stderr);
+ break;
+ }
+ /* At this point:
+ *
+ * correct from previous column
+ * actual from previous column
+ * amount not needed (garbage due to chopping)
+ * leftpad left padding for this column alone (not make-up or gap)
+ * space not needed (will recalculate now)
+ * dospace if we require space between this and the prior column
+ * legit space we were allowed to steal, and thus did steal
+ */
+ space = correct - actual + leftpad;
+ if(space<1) space=dospace;
+ if(space>SPACE_AMOUNT) space=SPACE_AMOUNT;
+
+ /* print data, set x position stuff */
+ amount = strlen(outbuf); /* post-chop data width */
+ if(!fmt->next){
+ /* Last column. Write padding + data + newline all together. */
+ outbuf[amount] = '\n';
+ fwrite(outbuf-space, space+amount+1, 1, stdout);
+ break;
+ }
+ /* Not the last column. Write padding + data together. */
+ fwrite(outbuf-space, space+amount, 1, stdout);
+ actual += space+amount;
+ correct += fmt->width;
+ correct += legit; /* adjust for SIGNAL expansion */
+ if(fmt->pr && fmt->next->pr){ /* neither is AIX filler */
+ correct++;
+ dospace = 1;
+ }else{
+ dospace = 0;
+ }
+ fmt = fmt->next;
+ /* At this point:
+ *
+ * correct screen position we should be at
+ * actual screen position we are at
+ * amount not needed
+ * leftpad not needed
+ * space not needed
+ * dospace if have determined that we need a space next time
+ * legit not needed
+ */
+ }
+}
+
+#ifdef TESTING
+static void sanity_check(void){
+ format_struct *fs = format_array;
+ while((fs->spec)[0] != '~'){
+ if(strlen(fs->head) > fs->width) printf("%d %s\n",strlen(fs->head),fs->spec);
+ fs++;
+ }
+}
+#endif
+
+void init_output(void){
+ memset(whitespace, ' ', PAGE_SIZE);
+#if 0
+ mprotect(whitespace, PAGE_SIZE, PROT_READ); /* FIXME may fail if unaligned */
+ mprotect(
+ (void *)((unsigned long)(whitespace_and_outbuf-PAGE_SIZE) &~ (PAGE_SIZE-1)),
+ PAGE_SIZE, PROT_NONE
+ );
+#endif
+ seconds_since_1970 = time(NULL);
+ time_of_boot = seconds_since_1970 - seconds_since_boot;
+ meminfo();
+ switch(getpagesize()){
+ case 65536: page_shift = 16; break;
+ case 32768: page_shift = 15; break;
+ case 16384: page_shift = 14; break;
+ case 8192: page_shift = 13; break;
+ default: fprintf(stderr, "Unknown page size! (assume 4096)\n");
+ case 4096: page_shift = 12; break;
+ case 2048: page_shift = 11; break;
+ case 1024: page_shift = 10; break;
+ }
+ check_header_width();
+}
--- /dev/null
+#!/bin/sh
+#
+# Wow, using $* causes great pain with: ps "pid,user pcpu,pmem"
+# The "$@" won't break that into 2 arguments.
+#
+LD_PRELOAD=../proc/libproc.so exec ./ps "$@"
--- /dev/null
+/*
+ * Copyright 1998 by Albert Cahalan; all rights reserved.
+ * This file may be used subject to the terms and conditions of the
+ * GNU Library General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+
+/* Ought to have debug print stuff like this:
+ * #define Print(fmt, args...) printf("Debug: " fmt, ## args)
+ */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+/* username lookups */
+#include <sys/types.h>
+#include <pwd.h>
+#include <grp.h>
+
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "common.h"
+#include "../proc/version.h"
+
+#define ARG_GNU 0
+#define ARG_END 1
+#define ARG_PGRP 2
+#define ARG_SYSV 3
+#define ARG_PID 4
+#define ARG_BSD 5
+#define ARG_FAIL 6
+#define ARG_SESS 7
+
+static int w_count = 0;
+
+static int ps_argc; /* global argc */
+static char **ps_argv; /* global argv */
+static int thisarg; /* index into ps_argv */
+static char *flagptr; /* current location in ps_argv[thisarg] */
+static int not_pure_unix = 0; /* set by BSD and GNU options */
+static int force_bsd = 0; /* set when normal parsing fails */
+
+#define exclusive(x) if((ps_argc != 2) || strcmp(ps_argv[1],x))\
+ return "The " x " option is exclusive."
+
+
+/********** utility functions **********/
+
+/*
+ * Both "-Oppid" and "-O ppid" should be legal, though Unix98
+ * does not require it. BSD and Digital Unix allow both.
+ * Return the argument or NULL;
+ */
+static const char *get_opt_arg(void){
+ if(*(flagptr+1)){ /* argument is part of ps_argv[thisarg] */
+ not_pure_unix = 1;
+ return flagptr+1;
+ }
+ if(thisarg+2 > ps_argc) return NULL; /* there is nothing left */
+ /* argument follows ps_argv[thisarg] */
+ if(*(ps_argv[thisarg+1]) == '\0') return NULL;
+ return ps_argv[++thisarg];
+}
+
+/********** parse lists (of UID, tty, GID, PID...) **********/
+
+static const char *parse_pid(char *str, sel_union *ret){
+ char *endp;
+ int num;
+ static const char *pidrange = "Process ID out of range.";
+ static const char *pidsyntax = "Process ID list syntax error.";
+ num = strtol(str, &endp, 0);
+ if(*endp != '\0') return pidsyntax;
+ if(num>0x7fff) return pidrange; /* Linux PID limit */
+ if(num<1) return pidrange;
+ ret->pid = num;
+ return 0;
+}
+
+static const char *parse_uid(char *str, sel_union *ret){
+ struct passwd *passwd_data;
+ char *endp;
+ unsigned long num;
+ static const char *uidrange = "User ID out of range.";
+ static const char *uidexist = "User name does not exist.";
+ num = strtoul(str, &endp, 0);
+ if(*endp != '\0'){ /* hmmm, try as login name */
+ passwd_data = getpwnam(str);
+ if(!passwd_data) return uidexist;
+ num = passwd_data->pw_uid;
+ }
+ if(num > 0xfffffffeUL) return uidrange;
+ ret->uid = num;
+ return 0;
+}
+
+static const char *parse_gid(char *str, sel_union *ret){
+ struct group *group_data;
+ char *endp;
+ unsigned long num;
+ static const char *gidrange = "Group ID out of range.";
+ static const char *gidexist = "Group name does not exist.";
+ num = strtoul(str, &endp, 0);
+ if(*endp != '\0'){ /* hmmm, try as login name */
+ group_data = getgrnam(str);
+ if(!group_data) return gidexist;
+ num = group_data->gr_gid;
+ }
+ if(num > 0xfffffffeUL) return gidrange;
+ ret->gid = num;
+ return 0;
+}
+
+static const char *parse_cmd(char *str, sel_union *ret){
+ strncpy(ret->cmd, str, 8); /* strncpy pads to end */
+ return 0;
+}
+
+static const char *parse_tty(char *str, sel_union *ret){
+ struct stat sbuf;
+ static const char *missing = "TTY could not be found.";
+ static const char *not_tty = "List member was not a TTY.";
+ char path[4096];
+ if(str[0]=='/'){
+ if(stat(str, &sbuf) >= 0) goto found_it;
+ return missing;
+ }
+#define lookup(p) \
+ snprintf(path,4096,p,str); \
+ if(stat(path, &sbuf) >= 0) goto found_it
+
+ lookup("/dev/pts/%s"); /* New Unix98 ptys go first */
+ lookup("/dev/%s");
+ lookup("/dev/tty%s");
+ lookup("/dev/pty%s");
+ lookup("/dev/%snsole"); /* "co" means "console", maybe do all VCs too? */
+ if(!strcmp(str,"-")){ /* "-" means no tty (from AIX) */
+ ret->tty = -1; /* processes w/o tty */
+ return 0;
+ }
+ if(!strcmp(str,"?")){ /* "?" means no tty, which bash eats (Reno BSD?) */
+ ret->tty = -1; /* processes w/o tty */
+ return 0;
+ }
+ if(!*(str+1) && (stat(str,&sbuf)>=0)){ /* Kludge! Assume bash ate '?'. */
+ ret->tty = -1; /* processes w/o tty */
+ return 0;
+ }
+#undef lookup
+ return missing;
+found_it:
+ if(!S_ISCHR(sbuf.st_mode)) return not_tty;
+ ret->tty = sbuf.st_rdev;
+ return 0;
+}
+
+/*
+ * Used to parse lists in a generic way. (function pointers)
+ */
+static const char *parse_list(const char *arg, const char *(*parse_fn)(char *, sel_union *) ){
+ selection_node *node;
+ char *buf; /* temp copy of arg to hack on */
+ char *sep_loc; /* separator location: " \t," */
+ char *walk;
+ int items;
+ int need_item;
+ const char *err; /* error code that could or did happen */
+ /*** prepare to operate ***/
+ node = malloc(sizeof(selection_node));
+ node->u = malloc(strlen(arg)*sizeof(sel_union)); /* waste is insignificant */
+ node->n = 0;
+ buf = malloc(strlen(arg)+1);
+ strcpy(buf, arg);
+ /*** sanity check and count items ***/
+ need_item = 1; /* true */
+ items = 0;
+ walk = buf;
+ err = "Improper list.";
+ do{
+ switch(*walk){
+ case ' ': case ',': case '\t': case '\0':
+ if(need_item) goto parse_error;
+ need_item=1;
+ break;
+ default:
+ if(need_item) items++;
+ need_item=0;
+ }
+ } while (*++walk);
+ if(need_item) goto parse_error;
+ node->n = items;
+ /*** actually parse the list ***/
+ walk = buf;
+ while(items--){
+ sep_loc = strpbrk(walk," ,\t");
+ if(sep_loc) *sep_loc = '\0';
+ if(( err=(parse_fn)(walk, node->u+items) )) goto parse_error;
+ walk = sep_loc + 1; /* point to next item, if any */
+ }
+ free(buf);
+ node->next = selection_list;
+ selection_list = node;
+ return NULL;
+parse_error:
+ free(buf);
+ free(node->u);
+ free(node);
+ return err;
+}
+
+/***************** parse SysV options, including Unix98 *****************/
+static const char *parse_sysv_option(void){
+ const char *arg;
+ const char *err;
+ flagptr = ps_argv[thisarg];
+ while(*++flagptr){
+ /* Find any excuse to ignore stupid Unix98 misfeatures. */
+ if(!strchr("aAdefgGlnoptuU", *flagptr)) not_pure_unix = 1;
+ switch(*flagptr){
+ case 'A':
+ trace("-A selects all processes.\n");
+ all_processes = 1;
+ break;
+ case 'C': /* end */
+ trace("-C select by process name.\n"); /* Why only HP/UX and us? */
+ arg=get_opt_arg();
+ if(!arg) return "List of command names must follow -C.";
+ err=parse_list(arg, parse_cmd);
+ if(err) return err;
+ selection_list->typecode = SEL_COMM;
+ return NULL; /* can't have any more options */
+ case 'F': /* DYNIX/ptx -f plus sz,rss,psr=ENG between c and stime */
+ trace("-F does fuller listing\n");
+ format_modifiers |= FM_F;
+ format_flags |= FF_Uf;
+ unix_f_option = 1; /* does this matter? */
+ break;
+ case 'G': /* end */
+ trace("-G select by RGID (supports names)\n");
+ arg=get_opt_arg();
+ if(!arg) return "List of real groups must follow -G.";
+ err=parse_list(arg, parse_gid);
+ if(err) return err;
+ selection_list->typecode = SEL_RGID;
+ return NULL; /* can't have any more options */
+ case 'H': /* another nice HP/UX feature */
+ trace("-H Process heirarchy (like ASCII art forest option)\n");
+ forest_type = 'u';
+ break;
+ case 'L': /* */
+ /* In spite of the insane 2-level thread system, Sun appears to
+ * have made this option Linux-compatible. If a process has N
+ * threads, ps will produce N lines of output. (not N+1 lines)
+ * Zombies are the only exception, with NLWP==0 and 1 output line.
+ * SCO UnixWare uses -L too.
+ */
+ trace("-L Print LWP (thread) info.\n");
+ format_modifiers |= FM_L;
+ break;
+ case 'M': /* someday, maybe, we will have MAC like SGI's Irix */
+ trace("-M Print security label for Mandatory Access Control.\n");
+ format_modifiers |= FM_M;
+ return "Sorry, no Mandatory Access Control support.";
+ break;
+ case 'N':
+ trace("-N negates.\n");
+ negate_selection = 1;
+ break;
+ case 'O': /* end */
+ trace("-O is preloaded -o.\n");
+ arg=get_opt_arg();
+ if(!arg) return "Format or sort specification must follow -O.";
+ defer_sf_option(arg, SF_U_O);
+ return NULL; /* can't have any more options */
+ case 'P': /* SunOS 5 "psr" or unknown HP/UX feature */
+ trace("-P adds columns of PRM info (HP) or PSR column (Sun)\n");
+ format_modifiers |= FM_P;
+ break;
+#ifdef WE_UNDERSTAND_THIS
+ case 'R': /* unknown HP/UX feature */
+ trace("-R selects PRM groups\n");
+ return "Don't understand PRM on Linux.";
+ break;
+#endif
+ case 'T':
+ /* IRIX 6.5 docs suggest POSIX threads get shown individually.
+ * This would make -T be like -L, -m, and m. (but an extra column)
+ * Testing (w/ normal processes) shows 1 line/process, not 2.
+ * Also, testing shows PID==SPID for all normal processes.
+ */
+ trace("-T adds strange SPID column (old sproc() threads?)\n");
+ format_modifiers |= FM_T;
+ break;
+ case 'U': /* end */
+ trace("-U select by RUID (supports names).\n");
+ arg=get_opt_arg();
+ if(!arg) return "List of real groups must follow -U.";
+ err=parse_list(arg, parse_uid);
+ if(err) return err;
+ selection_list->typecode = SEL_RUID;
+ return NULL; /* can't have any more options */
+ case 'V': /* single */
+ trace("-V prints version.\n");
+ exclusive("-V");
+ display_version();
+ exit(0);
+ case 'Z': /* full Mandatory Access Control level info */
+ trace("-Z shows full MAC info\n");
+ return "Don't understand MAC on Linux.";
+ break;
+ case 'a':
+ trace("-a select all with a tty, but omit session leaders.\n");
+ simple_select |= SS_U_a;
+ break;
+ case 'c':
+ /* HP-UX and SunOS 5 scheduling info modifier */
+ trace("-c changes scheduling info.\n");
+ format_modifiers |= FM_c;
+ break;
+ case 'd':
+ trace("-d select all, but omit session leaders.\n");
+ simple_select |= SS_U_d;
+ break;
+ case 'e':
+ trace("-e selects all processes.\n");
+ all_processes = 1;
+ break;
+ case 'f':
+ trace("-f does full listing\n");
+ format_flags |= FF_Uf;
+ unix_f_option = 1; /* does this matter? */
+ break;
+ case 'g': /* end */
+ trace("-g selects by session leader OR by group name\n");
+ arg=get_opt_arg();
+ if(!arg) return "List of session leaders OR effective group names must follow -g.";
+ err=parse_list(arg, parse_pid);
+ if(!err){
+ selection_list->typecode = SEL_SESS;
+ return NULL; /* can't have any more options */
+ }
+ err=parse_list(arg, parse_gid);
+ if(!err){
+ selection_list->typecode = SEL_EGID;
+ return NULL; /* can't have any more options */
+ }
+ return "List of session leaders OR effective group IDs was invalid.";
+ case 'j':
+ trace("-j jobs format.\n");
+ /* Debian uses RD_j and Digital uses JFMT */
+ if(sysv_j_format) format_flags |= FF_Uj;
+ else format_modifiers |= FM_j;
+ break;
+ case 'l':
+ trace("-l long format.\n");
+ format_flags |= FF_Ul;
+ break;
+ case 'm':
+ trace("-m shows threads.\n");
+ /* note that AIX shows 2 lines for a normal process */
+ /* not implemented -- silently ignore the option */
+ break;
+ case 'n': /* end */
+ trace("-n sets namelist file.\n");
+ arg=get_opt_arg();
+ if(!arg) return "Alternate System.map file must follow -n.";
+ namelist_file = arg;
+ return NULL; /* can't have any more options */
+ case 'o': /* end */
+ /* Unix98 has gross behavior regarding this. From the following: */
+ /* ps -o pid,nice=NICE,tty=TERMINAL,comm */
+ /* The result must be 2 columns: "PID NICE,tty=TERMINAL,comm" */
+ /* Yes, the second column has the name "NICE,tty=TERMINAL,comm" */
+ /* This parser looks for any excuse to ignore that braindamage. */
+ trace("-o user-defined format.\n");
+ arg=get_opt_arg();
+ if(!arg) return "Format specification must follow -o.";
+ not_pure_unix |= defer_sf_option(arg, SF_U_o);
+ return NULL; /* can't have any more options */
+ case 'p': /* end */
+ trace("-p select by PID.\n");
+ arg=get_opt_arg();
+ if(!arg) return "List of process IDs must follow -p.";
+ err=parse_list(arg, parse_pid);
+ if(err) return err;
+ selection_list->typecode = SEL_PID;
+ return NULL; /* can't have any more options */
+#ifdef KNOW_WHAT_TO_DO_WITH_THIS
+ case 'r':
+ trace("-r some Digital Unix thing about warnings...\n");
+ trace(" or SCO's option to chroot() for new /proc and /dev.\n");
+ return "The -r option is reserved.";
+ break;
+#endif
+ case 's': /* end */
+ trace("-s Select processes belonging to the sessions given.\n");
+ arg=get_opt_arg();
+ if(!arg) return "List of session IDs must follow -s.";
+ err=parse_list(arg, parse_pid);
+ if(err) return err;
+ selection_list->typecode = SEL_SESS;
+ return NULL; /* can't have any more options */
+ case 't': /* end */
+ trace("-t select by tty.\n");
+ arg=get_opt_arg();
+ if(!arg) return "List of terminals (pty, tty...) must follow -t.";
+ err=parse_list(arg, parse_tty);
+ if(err) return err;
+ selection_list->typecode = SEL_TTY;
+ return NULL; /* can't have any more options */
+ case 'u': /* end */
+ trace("-u select by user ID (the EUID?) (supports names).\n");
+ arg=get_opt_arg();
+ if(!arg) return "List of users must follow -u.";
+ err=parse_list(arg, parse_uid);
+ if(err) return err;
+ selection_list->typecode = SEL_EUID;
+ return NULL; /* can't have any more options */
+ case 'w':
+ trace("-w wide output.\n");
+ w_count++;
+ break;
+#ifdef NOBODY_HAS_BSD_HABITS_ANYMORE
+ case 'x': /* Same as -y, but for System V Release 4 MP */
+ trace("-x works like Sun Solaris & SCO Unixware -y option\n");
+ format_modifiers |= FM_x;
+ break;
+#endif
+ case 'y': /* Sun's -l hack (also: Irix "lnode" resource control info) */
+ trace("-y Print lnone info in UID/USER column or do Sun -l hack.\n");
+ format_modifiers |= FM_y;
+ break;
+ case 'z': /* alias of Mandatory Access Control level info */
+ trace("-z shows aliased MAC info\n");
+ return "Don't understand MAC on Linux.";
+ break;
+ case '-':
+ return "Embedded '-' among SysV options makes no sense.";
+ break;
+ case '\0':
+ return "Please report the \"SysV \\0 can't happen\" bug.";
+ break;
+ default:
+ return "Unsupported SysV option.";
+ } /* switch */
+ } /* while */
+ return NULL;
+}
+
+/************************* parse BSD options **********************/
+static const char *parse_bsd_option(void){
+ const char *arg;
+ const char *err;
+
+ flagptr = ps_argv[thisarg]; /* assume we _have_ a '-' */
+ if(flagptr[0]=='-'){
+ if(!force_bsd) return "Can't happen! Problem #1.";
+ }else{
+ flagptr--; /* off beginning, will increment before use */
+ if(personality & PER_FORCE_BSD){
+ if(!force_bsd) return "Can't happen! Problem #2.";
+ }else{
+ if(force_bsd) return "2nd chance parse failed, not BSD or SysV.";
+ }
+ }
+
+ while(*++flagptr){
+ switch(*flagptr){
+ case '0' ... '9': /* end */
+ trace("0..9 Old BSD-style select by process ID\n");
+ arg=flagptr;
+ err=parse_list(arg, parse_pid);
+ if(err) return err;
+ selection_list->typecode = SEL_PID;
+ return NULL; /* can't have any more options */
+#if 0
+ case 'A':
+ /* maybe this just does a larger malloc() ? */
+ trace("A Increases the argument space (Digital Unix)\n");
+ return "Option A is reserved.";
+ break;
+ case 'C':
+ /* should divide result by 1-(e**(foo*log(bar))) */
+ trace("C Use raw CPU time for %%CPU instead of decaying ave\n");
+ return "Option C is reserved.";
+ break;
+#endif
+ case 'L': /* single */
+ trace("L List all format specifiers\n");
+ exclusive("L");
+ print_format_specifiers();
+ exit(0);
+#if 0
+ case 'M':
+ trace("M junk (use alternate core)\n");
+ return "Option M is unsupported, try N or -n instead.";
+ break;
+#endif
+ case 'N': /* end */
+ trace("N Specify namelist file\n");
+ arg=get_opt_arg();
+ if(!arg) return "Alternate System.map file must follow N.";
+ namelist_file = arg;
+ return NULL; /* can't have any more options */
+ case 'O': /* end */
+ trace("O Like o + defaults, add new columns after PID. Also sort.\n");
+ arg=get_opt_arg();
+ if(!arg) return "Format or sort specification must follow O.";
+ defer_sf_option(arg, SF_B_O);
+ return NULL; /* can't have any more options */
+ break;
+ case 'S':
+ trace("S include dead kids in sum\n");
+ include_dead_children = 1;
+ break;
+ case 'T':
+ trace("T Select all processes on this terminal\n");
+ /* put our tty on a tiny list */
+ {
+ selection_node *node;
+ node = malloc(sizeof(selection_node));
+ node->u = malloc(sizeof(sel_union));
+ node->u[0].tty = cached_tty;
+ node->typecode = SEL_TTY;
+ node->n = 1;
+ node->next = selection_list;
+ selection_list = node;
+ }
+ break;
+ case 'U': /* end */
+ trace("U Select processes for specified users.\n");
+ arg=get_opt_arg();
+ if(!arg) return "List of users must follow U.";
+ err=parse_list(arg, parse_uid);
+ if(err) return err;
+ selection_list->typecode = SEL_EUID;
+ return NULL; /* can't have any more options */
+ case 'V': /* single */
+ trace("V show version info\n");
+ exclusive("V");
+ display_version();
+ exit(0);
+ case 'W':
+ trace("W N/A get swap info from ... not /dev/drum.\n");
+ return "Obsolete W option not supported. (You have a /dev/drum?)";
+ break;
+ case 'X':
+ trace("X Old Linux i386 register format\n");
+ format_flags |= FF_LX;
+ break;
+ case 'a':
+ trace("a Select all w/tty, including other users\n");
+ simple_select |= SS_B_a;
+ break;
+ case 'c':
+ trace("c true command name\n");
+ bsd_c_option = 1;
+ break;
+ case 'e':
+ trace("e environment\n");
+ bsd_e_option = 1;
+ break;
+ case 'f':
+ trace("f ASCII art forest\n");
+ forest_type = 'b';
+ break;
+ case 'g':
+ trace("g _all_, even group leaders!.\n");
+ simple_select |= SS_B_g;
+ break;
+ case 'h':
+ trace("h Repeat header... yow.\n");
+ if(header_type) return "Only one heading option may be specified.";
+ if(personality & PER_BSD_h) header_type = HEAD_MULTI;
+ else header_type = HEAD_NONE;
+ break;
+ case 'j':
+ trace("j job control format\n");
+ format_flags |= FF_Bj;
+ break;
+#if 0
+ case 'k':
+ trace("k N/A Use /vmcore as c-dumpfile\n");
+ return "Obsolete k option not supported.";
+ break;
+#endif
+ case 'l':
+ trace("l Display long format\n");
+ format_flags |= FF_Bl;
+ break;
+ case 'm':
+ trace("m all threads, sort on mem use, show mem info\n");
+ if(personality & PER_OLD_m){
+ format_flags |= FF_Lm;
+ break;
+ }
+ if(personality & PER_BSD_m){
+ defer_sf_option("pmem", SF_B_m);
+ break;
+ }
+ /* not implemented -- silently ignore the option */
+ break;
+ case 'n':
+ trace("n Numeric output for WCHAN, and USER replaced by UID\n");
+ wchan_is_number = 1;
+ user_is_number = 1;
+ /* TODO add tty_is_number too? */
+ break;
+ case 'o': /* end */
+ trace("o Specify user-defined format\n");
+ arg=get_opt_arg();
+ if(!arg) return "Format specification must follow o.";
+ defer_sf_option(arg, SF_B_o);
+ return NULL; /* can't have any more options */
+ case 'p': /* end */
+ trace("p Select by process ID\n");
+ arg=get_opt_arg();
+ if(!arg) return "List of process IDs must follow p.";
+ err=parse_list(arg, parse_pid);
+ if(err) return err;
+ selection_list->typecode = SEL_PID;
+ return NULL; /* can't have any more options */
+ case 'r':
+ trace("r Select running processes\n");
+ running_only = 1;
+ break;
+ case 's':
+ trace("s Display signal format\n");
+ format_flags |= FF_Bs;
+ break;
+ case 't': /* end */
+ trace("t Select by tty.\n");
+ /* List of terminals (tty, pty...) _should_ follow t. */
+ arg=get_opt_arg();
+ if(!arg){
+ /* Wow, obsolete BSD syntax. Put our tty on a tiny list. */
+ selection_node *node;
+ node = malloc(sizeof(selection_node));
+ node->u = malloc(sizeof(sel_union));
+ node->u[0].tty = cached_tty;
+ node->typecode = SEL_TTY;
+ node->n = 1;
+ node->next = selection_list;
+ selection_list = node;
+ return NULL;
+ }
+ err=parse_list(arg, parse_tty);
+ if(err) return err;
+ selection_list->typecode = SEL_TTY;
+ return NULL; /* can't have any more options */
+ case 'u':
+ trace("u Display user-oriented\n");
+ format_flags |= FF_Bu;
+ break;
+ case 'v':
+ trace("v Display virtual memory\n");
+ format_flags |= FF_Bv;
+ break;
+ case 'w':
+ trace("w wide output\n");
+ w_count++;
+ break;
+ case 'x':
+ trace("x Select processes without controlling ttys\n");
+ simple_select |= SS_B_x;
+ break;
+ case '-':
+ return "Embedded '-' among BSD options makes no sense.";
+ break;
+ case '\0':
+ return "Please report the \"BSD \\0 can't happen\" bug.";
+ break;
+ default:
+ return "Unsupported option (BSD syntax)";
+ } /* switch */
+ } /* while */
+ return NULL;
+}
+
+/*************** gnu long options **********************/
+
+/*
+ * Return the argument or NULL
+ */
+static const char *grab_gnu_arg(void){
+ switch(*flagptr){ /* argument is part of ps_argv[thisarg] */
+ default:
+ return NULL; /* something bad */
+ case '=': case ':':
+ if(*++flagptr) return flagptr; /* found it */
+ return NULL; /* empty '=' or ':' */
+ case '\0': /* try next argv[] */
+ }
+ if(thisarg+2 > ps_argc) return NULL; /* there is nothing left */
+ /* argument follows ps_argv[thisarg] */
+ if(*(ps_argv[thisarg+1]) == '\0') return NULL;
+ return ps_argv[++thisarg];
+}
+
+typedef struct gnu_table_struct {
+ const char *name; /* long option name */
+ const void *jump; /* See gcc extension info. :-) */
+} gnu_table_struct;
+
+static int compare_gnu_table_structs(const void *a, const void *b){
+ return strcmp(((gnu_table_struct*)a)->name,((gnu_table_struct*)b)->name);
+}
+
+/* Option arguments are after ':', after '=', or in argv[n+1] */
+static const char *parse_gnu_option(void){
+ const char *arg;
+ const char *err;
+ char *s;
+ size_t sl;
+ char buf[16];
+ gnu_table_struct findme = { buf, NULL};
+ gnu_table_struct *found;
+ static const gnu_table_struct gnu_table[] = {
+ {"Group", &&case_Group}, /* rgid */
+ {"User", &&case_User}, /* ruid */
+ {"cols", &&case_cols},
+ {"columns", &&case_columns},
+ {"cumulative", &&case_cumulative},
+ {"deselect", &&case_deselect}, /* -N */
+ {"forest", &&case_forest}, /* f -H */
+ {"format", &&case_format},
+ {"group", &&case_group}, /* egid */
+ {"header", &&case_header},
+ {"headers", &&case_headers},
+ {"heading", &&case_heading},
+ {"headings", &&case_headings},
+ {"help", &&case_help},
+ {"info", &&case_info},
+ {"lines", &&case_lines},
+ {"no-header", &&case_no_header},
+ {"no-headers", &&case_no_headers},
+ {"no-heading", &&case_no_heading},
+ {"no-headings", &&case_no_headings},
+ {"noheader", &&case_noheader},
+ {"noheaders", &&case_noheaders},
+ {"noheading", &&case_noheading},
+ {"noheadings", &&case_noheadings},
+ {"pid", &&case_pid},
+ {"rows", &&case_rows},
+ {"sid", &&case_sid},
+ {"sort", &&case_sort},
+ {"tty", &&case_tty},
+ {"user", &&case_user}, /* euid */
+ {"version", &&case_version},
+ {"width", &&case_width},
+ };
+ const int gnu_table_count = sizeof(gnu_table)/sizeof(gnu_table_struct);
+
+ s = ps_argv[thisarg]+2;
+ sl = strcspn(s,":=");
+ if(sl > 15) return "Unknown gnu long option.";
+ strncpy(buf, s, sl);
+ buf[sl] = '\0';
+ flagptr = s+sl;
+
+ found = bsearch(&findme, gnu_table, gnu_table_count,
+ sizeof(gnu_table_struct), compare_gnu_table_structs
+ );
+
+ if(!found) return "Unknown gnu long option.";
+
+ goto *(found->jump); /* See gcc extension info. :-) */
+
+ case_Group:
+ trace("--Group\n");
+ arg = grab_gnu_arg();
+ if(!arg) return "List of real groups must follow --Group.";
+ err=parse_list(arg, parse_gid);
+ if(err) return err;
+ selection_list->typecode = SEL_RGID;
+ return NULL;
+ case_User:
+ trace("--User\n");
+ arg = grab_gnu_arg();
+ if(!arg) return "List of real users must follow --User.";
+ err=parse_list(arg, parse_uid);
+ if(err) return err;
+ selection_list->typecode = SEL_RUID;
+ return NULL;
+ case_cols:
+ case_width:
+ case_columns:
+ trace("--cols\n");
+ arg = grab_gnu_arg();
+ if(arg && *arg){
+ long t;
+ char *endptr;
+ t = strtol(arg, &endptr, 0);
+ if(!*endptr && (t>0) && (t<2000000000)){
+ screen_cols = (int)t;
+ return NULL;
+ }
+ }
+ return "Number of columns must follow --cols, --width, or --columns.";
+ case_cumulative:
+ trace("--cumulative\n");
+ if(s[sl]) return "Option --cumulative does not take an argument.";
+ include_dead_children = 1;
+ return NULL;
+ case_deselect:
+ trace("--deselect\n");
+ if(s[sl]) return "Option --deselect does not take an argument.";
+ negate_selection = 1;
+ return NULL;
+ case_no_header:
+ case_no_headers:
+ case_no_heading:
+ case_no_headings:
+ case_noheader:
+ case_noheaders:
+ case_noheading:
+ case_noheadings:
+ trace("--noheaders\n");
+ if(s[sl]) return "Option --no-heading does not take an argument.";
+ if(header_type) return "Only one heading option may be specified.";
+ header_type = HEAD_NONE;
+ return NULL;
+ case_header:
+ case_headers:
+ case_heading:
+ case_headings:
+ trace("--headers\n");
+ if(s[sl]) return "Option --heading does not take an argument.";
+ if(header_type) return "Only one heading option may be specified.";
+ header_type = HEAD_MULTI;
+ return NULL;
+ case_forest:
+ trace("--forest\n");
+ if(s[sl]) return "Option --forest does not take an argument.";
+ forest_type = 'g';
+ return NULL;
+ case_format:
+ trace("--format\n");
+ arg=grab_gnu_arg();
+ if(!arg) return "Format specification must follow --format.";
+ defer_sf_option(arg, SF_G_format);
+ return NULL;
+ case_group:
+ trace("--group\n");
+ arg = grab_gnu_arg();
+ if(!arg) return "List of effective groups must follow --group.";
+ err=parse_list(arg, parse_gid);
+ if(err) return err;
+ selection_list->typecode = SEL_EGID;
+ return NULL;
+ case_help:
+ trace("--help\n");
+ exclusive("--help");
+ fputs(help_message, stderr);
+ exit(0);
+ return NULL;
+ case_info:
+ trace("--info\n");
+ exclusive("--info");
+ self_info();
+ exit(0);
+ return NULL;
+ case_pid:
+ trace("--pid\n");
+ arg = grab_gnu_arg();
+ if(!arg) return "List of process IDs must follow --pid.";
+ err=parse_list(arg, parse_pid);
+ if(err) return err;
+ selection_list->typecode = SEL_PID;
+ return NULL;
+ case_rows:
+ case_lines:
+ trace("--rows\n");
+ arg = grab_gnu_arg();
+ if(arg && *arg){
+ long t;
+ char *endptr;
+ t = strtol(arg, &endptr, 0);
+ if(!*endptr && (t>0) && (t<2000000000)){
+ screen_rows = (int)t;
+ return NULL;
+ }
+ }
+ return "Number of rows must follow --rows or --lines.";
+ case_sid:
+ trace("--sid\n");
+ arg = grab_gnu_arg();
+ if(!arg) return "Some sid thing(s) must follow --sid.";
+ err=parse_list(arg, parse_pid);
+ if(err) return err;
+ selection_list->typecode = SEL_SESS;
+ return NULL;
+ case_sort:
+ trace("--sort\n");
+ arg=grab_gnu_arg();
+ if(!arg) return "Long sort specification must follow --sort.";
+ defer_sf_option(arg, SF_G_sort);
+ return NULL;
+ case_tty:
+ trace("--tty\n");
+ arg = grab_gnu_arg();
+ if(!arg) return "List of ttys must follow --tty.";
+ err=parse_list(arg, parse_tty);
+ if(err) return err;
+ selection_list->typecode = SEL_TTY;
+ return NULL;
+ case_user:
+ trace("--user\n");
+ arg = grab_gnu_arg();
+ if(!arg) return "List of effective users must follow --user.";
+ err=parse_list(arg, parse_uid);
+ if(err) return err;
+ selection_list->typecode = SEL_EUID;
+ return NULL;
+ case_version:
+ trace("--version\n");
+ exclusive("--version");
+ display_version();
+ exit(0);
+ return NULL;
+}
+
+/*************** process trailing PIDs **********************/
+static const char *parse_trailing_pids(void){
+ selection_node *pidnode; /* pid */
+ selection_node *grpnode; /* process group */
+ selection_node *sidnode; /* session */
+ char **argp; /* pointer to pointer to text of PID */
+ const char *err; /* error code that could or did happen */
+ int i;
+
+ i = ps_argc - thisarg; /* how many trailing PIDs, SIDs, PGRPs?? */
+ argp = ps_argv + thisarg;
+ thisarg = ps_argc - 1; /* we must be at the end now */
+
+ pidnode = malloc(sizeof(selection_node));
+ pidnode->u = malloc(i*sizeof(sel_union)); /* waste is insignificant */
+ pidnode->n = 0;
+
+ grpnode = malloc(sizeof(selection_node));
+ grpnode->u = malloc(i*sizeof(sel_union)); /* waste is insignificant */
+ grpnode->n = 0;
+
+ sidnode = malloc(sizeof(selection_node));
+ sidnode->u = malloc(i*sizeof(sel_union)); /* waste is insignificant */
+ sidnode->n = 0;
+
+ while(i--){
+ char *data;
+ data = *(argp++);
+ switch(*data){
+ default: err = parse_pid( data, pidnode->u + pidnode->n++); break;
+ case '-': err = parse_pid(++data, grpnode->u + grpnode->n++); break;
+ case '+': err = parse_pid(++data, sidnode->u + sidnode->n++); break;
+ }
+ if(err) return err; /* the node gets freed with the list */
+ }
+
+ if(pidnode->n){
+ pidnode->next = selection_list;
+ selection_list = pidnode;
+ selection_list->typecode = SEL_PID;
+ } /* else free both parts */
+
+ if(grpnode->n){
+ grpnode->next = selection_list;
+ selection_list = grpnode;
+ selection_list->typecode = SEL_PGRP;
+ } /* else free both parts */
+
+ if(sidnode->n){
+ sidnode->next = selection_list;
+ selection_list = sidnode;
+ selection_list->typecode = SEL_SESS;
+ } /* else free both parts */
+
+ return NULL;
+}
+
+/************** misc stuff ***********/
+
+static void reset_parser(void){
+ w_count = 0;
+}
+
+static int arg_type(const char *str){
+ int tmp = str[0];
+ if((tmp>='a') && (tmp<='z')) return ARG_BSD;
+ if((tmp>='A') && (tmp<='Z')) return ARG_BSD;
+ if((tmp>='0') && (tmp<='9')) return ARG_PID;
+ if(tmp=='+') return ARG_SESS;
+ if(tmp!='-') return ARG_FAIL;
+ tmp = str[1];
+ if((tmp>='a') && (tmp<='z')) return ARG_SYSV;
+ if((tmp>='A') && (tmp<='Z')) return ARG_SYSV;
+ if((tmp>='0') && (tmp<='9')) return ARG_PGRP;
+ if(tmp!='-') return ARG_FAIL;
+ tmp = str[2];
+ if((tmp>='a') && (tmp<='z')) return ARG_GNU;
+ if((tmp>='A') && (tmp<='Z')) return ARG_GNU;
+ if(tmp=='\0') return ARG_END;
+ return ARG_FAIL;
+}
+
+/* First assume sysv, because that is the POSIX and Unix98 standard. */
+static const char *parse_all_options(void){
+ const char *err = NULL;
+ int at;
+ while(++thisarg < ps_argc){
+ trace("parse_all_options calling arg_type for \"%s\"\n", ps_argv[thisarg]);
+ at = arg_type(ps_argv[thisarg]);
+ trace("ps_argv[thisarg] is %s\n", ps_argv[thisarg]);
+ if(at != ARG_SYSV) not_pure_unix = 1;
+ switch(at){
+ case ARG_GNU:
+ err = parse_gnu_option();
+ break;
+ case ARG_SYSV:
+ if(!force_bsd){ /* else go past case ARG_BSD */
+ err = parse_sysv_option();
+ break;
+ case ARG_BSD:
+ if(force_bsd && !(personality & PER_FORCE_BSD)) return "way bad";
+ }
+ prefer_bsd_defaults = 1;
+ err = parse_bsd_option();
+ break;
+ case ARG_PGRP:
+ case ARG_SESS:
+ case ARG_PID:
+ prefer_bsd_defaults = 1;
+ err = parse_trailing_pids();
+ break;
+ case ARG_END:
+ case ARG_FAIL:
+ trace(" FAIL/END on [%s]\n",ps_argv[thisarg]);
+ return "Garbage option.";
+ break;
+ default:
+ printf(" ? %s\n",ps_argv[thisarg]);
+ return "Something broke.";
+ } /* switch */
+ if(err) return err;
+ } /* while */
+ return NULL;
+}
+
+static void choose_dimensions(void){
+ if(w_count && (screen_cols<132)) screen_cols=132;
+ if(w_count>1) screen_cols=OUTBUF_SIZE;
+ /* perhaps --html and --null should set unlimited width */
+}
+
+int arg_parse(int argc, char *argv[]){
+ const char *err = NULL;
+ const char *err2 = NULL;
+ ps_argc = argc;
+ ps_argv = argv;
+ thisarg = 0;
+
+#if 0
+ {int debugloop = 0; while(debugloop<argc){
+ trace("argv[%d]=%s\n", debugloop, argv[debugloop]); debugloop++;}}
+#endif
+
+ if(personality & PER_FORCE_BSD) goto try_bsd;
+
+ err = parse_all_options();
+ if(err) goto try_bsd;
+ err = process_sf_options(!not_pure_unix);
+ if(err) goto try_bsd;
+ err = select_bits_setup();
+ if(err) goto try_bsd;
+
+ choose_dimensions();
+ return 0;
+
+try_bsd:
+ trace("--------- now try BSD ------\n");
+
+ reset_global();
+ reset_parser();
+ reset_sortformat();
+ format_flags = 0;
+ ps_argc = argc;
+ ps_argv = argv;
+ thisarg = 0;
+ /* no need to reset flagptr */
+ not_pure_unix=1;
+ force_bsd=1;
+ prefer_bsd_defaults=1;
+ if(!( (PER_OLD_m|PER_BSD_m) & personality )) /* if default m setting... */
+ personality |= PER_OLD_m; /* Prefer old Linux over true BSD. */
+ /* Do not set PER_FORCE_BSD! It is tested below. */
+
+ err2 = parse_all_options();
+ if(err2) goto total_failure;
+ err2 = process_sf_options(!not_pure_unix);
+ if(err2) goto total_failure;
+ err2 = select_bits_setup();
+ if(err2) goto total_failure;
+
+ if(!(personality & PER_FORCE_BSD))
+ fprintf(stderr, "Bad syntax, perhaps a bogus '-'?\n");
+
+ choose_dimensions();
+ return 0;
+
+total_failure:
+ reset_parser();
+ if(personality & PER_FORCE_BSD) fprintf(stderr, "ERROR: %s\n", err2);
+ else fprintf(stderr, "ERROR: %s\n", err);
+ fputs(help_message, stderr);
+ exit(1);
+ /* return 1; */ /* useless */
+}
--- /dev/null
+.\" Man page for ps.
+.\" Quick hack conversion by Albert Cahalan, 1998.
+.\" Licensed under version 2 of the Gnu General Public License.
+.\"
+.\" This man page is a horrid hack because *roff sucks.
+.\" The whole system is way obsolete. The internal header
+.\" stuff must die, and will when I figure out how to kill it.
+.\" I've already killed the wasteful left margin and screwy
+.\" old perfect justification. Gross! You'd think someone
+.\" invented this crap in 1973. Oh yeah, they did. Sorry.
+.\"
+.TH PS 1 "July 5, 1998" "Linux" "Linux User's Manual"
+.SH \fRNAME\fR
+ps \- report process status
+.ad r
+.na
+.ss 12 0
+.in 0
+.nh
+.nf
+
+SYNOPSIS
+ps [options]
+
+
+DESCRIPTION
+ps gives a snapshot of the current processes. If you want
+a repetitive update of this status, use top. This man
+page documents the /proc-based version of ps, or tries to.
+
+
+COMMAND-LINE OPTIONS
+
+This version of ps accepts several kinds of options.
+
+Unix options may be grouped and must be preceeded by a dash.
+BSD options may be grouped and must not be used with a dash.
+Gnu long options are preceeded by two dashes.
+
+Options of different types may be freely mixed.
+
+Set the I_WANT_A_BROKEN_PS environment variable to force BSD syntax even
+when options are preceeded by a dash. The PS_PERSONALITY environment
+variable (described below) provides more detailed control of ps behavior.
+
+SIMPLE PROCESS SELECTION
+-A select all processes
+-N negate selection
+-a select all with a tty except session leaders
+-d select all, but omit session leaders
+-e select all processes
+T select all processes on this terminal
+a select all processes on a terminal, including those of other users
+g really all, even group leaders (does nothing w/o SunOS settings)
+r restrict output to running processes
+x select processes without controlling ttys
+--deselect negate selection
+
+PROCESS SELECTION BY LIST
+-C select by command name
+-G select by RGID (supports names)
+-U select by RUID (supports names)
+-g select by session leader OR by group name
+-p select by PID
+-s select processes belonging to the sessions given
+-t select by tty
+-u select by effective user ID (supports names)
+U select processes for specified users
+p select by process ID
+t select by tty
+--Group select by real group name or ID
+--User select by real user name or ID
+--group select by effective group name or ID
+--pid select by process ID
+--sid select by session ID
+--tty select by terminal
+--user select by effective user name or ID
+-123 implied --sid
+123 implied --pid
+
+OUTPUT FORMAT CONTROL
+-O is preloaded "-o"
+-c different scheduler info for -l option
+-f does full listing
+-j jobs format
+-l long format
+-o user-defined format
+-y do not show flags; show rss in place of addr
+O is preloaded "o" (overloaded)
+X old Linux i386 register format
+j job control format
+l display long format
+o specify user-defined format
+s display signal format
+u display user-oriented format
+v display virtual memory format
+--format user-defined format
+
+OUTPUT MODIFIERS
+-H show process hierarchy (forest)
+-m show threads
+-n set namelist file
+-w wide output
+C use raw CPU time for %CPU instead of decaying average
+N specify namelist file
+O sorting order (overloaded)
+S include some dead child process data (as a sum with the parent)
+c true command name
+e show environment after the command
+f ASCII-art process hierarchy (forest)
+h no header (or, one header per screen in the BSD personality)
+m all threads
+n numeric output for WCHAN and USER
+w wide output
+--cols set screen width
+--columns set screen width
+--cumulative include some dead child process data (as a sum with the parent)
+--forest ASCII art process tree
+--headers repeat header lines, one per page of output
+--no-headers print no header line at all
+--lines set screen height
+--rows set screen height
+--sort specify sorting order
+--width set screen width
+
+INFORMATION
+-V print version
+L list all format specifiers
+V show version info
+--help print help message
+--info print debugging info
+--version print version
+
+OBSOLETE
+A increases the argument space (DecUnix)
+M use alternate core (try -n or N instead)
+W get swap info from ... not /dev/drum (try -n or N instead)
+k use /vmcore as c-dumpfile (try -n or N instead)
+
+
+
+NOTES
+
+The "-g" option can select by session leader OR by group name.
+Selection by session leader is specified by many standards,
+but selection by group is the logical behavior that several other
+operating systems use. This ps will select by session leader when
+the list is completely numeric (as sessions are). Group ID numbers
+will work only when some group names are also specified.
+
+The "m" option should not be used. Use "-m" or "-o" with a list.
+("m" displays memory info, shows threads, or sorts by memory use)
+
+The "h" option is problematic. Standard BSD ps uses the option to
+print a header on each page of output, but older Linux ps uses the option
+to totally disable the header. This version of ps follows the Linux
+usage of not printing the header unless the BSD personality has been
+selected, in which case it prints a header on each page of output.
+Regardless of the current personality, you can use the long options
+--headers and --no-headers to enable printing headers each page and
+disable headers entirely, respectively.
+
+Terminals (ttys, or screens for text output) can be specified in several
+forms: /dev/ttyS1, ttyS1, S1. Obsolete "ps t" (your own terminal) and
+"ps t?" (processes without a terminal) syntax is supported, but modern
+options ("T", "-t" with list, "x", "t" with list) should be used instead.
+
+The BSD "O" option can act like "-O" (user-defined output format with
+some common fields predefined) or can be used to specify sort order.
+Heuristics are used to determine the behavior of this option. To ensure
+that the desired behavior is obtained, specify the other option (sorting
+or formatting) in some other way.
+
+For sorting, BSD "O" option syntax is O[+|-]k1[,[+|-]k2[,...]]
+Order the process listing according to the multilevel sort specified by
+the sequence of short keys from SORT KEYS, k1, k2, ... The `+' is quite
+optional, merely re-iterating the default direction on a key. `-' reverses
+direction only on the key it precedes. The O option must be the last option
+in a single command argument, but specifications in successive arguments are
+catenated.
+
+Gnu sorting syntax is --sortX[+|-]key[,[+|-]key[,...]]
+Choose a multi-letter key from the SORT KEYS section. X may be any
+convenient separator character. To be GNU-ish use `='. The `+' is really
+optional since default direction is increasing numerical or lexicographic
+order. For example, ps jax --sort=uid,-ppid,+pid
+
+This ps works by reading the virtual files in /proc. This ps does not
+need to be suid kmem or have any privileges to run. Do not give this ps
+any special permissions.
+
+This ps needs access to a namelist file for proper WCHAN display.
+The namelist file must match the current Linux kernel exactly for
+correct output.
+
+To produce the WCHAN field, ps needs to read the System.map file created
+when the kernel is compiled. The search path is:
+
+$PS_SYSTEM_MAP
+/boot/System.map-`uname -r`
+/boot/System.map
+/lib/modules/`uname -r`/System.map
+/usr/src/linux/System.map
+
+The member used_math of task_struct is not shown, since crt0.s checks
+to see if math is present. This causes the math flag to be set for all
+processes, and so it is worthless. (Somebody fix libc or the kernel please)
+
+Programs swapped out to disk will be shown without command line arguments,
+and unless the c option is given, in brackets.
+
+%CPU shows the cputime/realtime percentage. It will not add up to 100%
+unless you are lucky. It is time used divided by the time the process has
+been running.
+
+The SIZE and RSS fields don't count the page tables and the task_struct of a
+proc; this is at least 12k of memory that is always resident. SIZE is the
+virtual size of the proc (code+data+stack).
+
+Processes marked <defunct> are dead processes (so-called "zombies") that
+remain because their parent has not destroyed them properly. These processes
+will be destroyed by init(8) if the parent process exits.
+
+
+PROCESS FLAGS
+
+ALIGNWARN 001 print alignment warning msgs
+STARTING 002 being created
+EXITING 004 getting shut down
+PTRACED 010 set if ptrace (0) has been called
+TRACESYS 020 tracing system calls
+FORKNOEXEC 040 forked but didn't exec
+SUPERPRIV 100 used super-user privileges
+DUMPCORE 200 dumped core
+SIGNALED 400 killed by a signal
+
+
+PROCESS STATE CODES
+
+D uninterruptible sleep (usually IO)
+R runnable (on run queue)
+S sleeping
+T traced or stopped
+Z a defunct ("zombie") process
+
+For BSD formats and when the "stat" keyword is used, additional
+letters may be displayed:
+
+W has no resident pages
+< high-priority process
+N low-priority task
+L has pages locked into memory (for real-time and custom IO)
+
+
+SORT KEYS
+
+Note that the values used in sorting are the internal values ps uses and not
+the `cooked' values used in some of the output format fields. Pipe ps
+output into the sort(1) command if you want to sort the cooked values.
+
+KEY LONG DESCRIPTION
+c cmd simple name of executable
+C cmdline full command line
+f flags flags as in long format F field
+g pgrp process group ID
+G tpgid controlling tty process group ID
+j cutime cumulative user time
+J cstime cumulative system time
+k utime user time
+K stime system time
+m min_flt number of minor page faults
+M maj_flt number of major page faults
+n cmin_flt cumulative minor page faults
+N cmaj_flt cumulative major page faults
+o session session ID
+p pid process ID
+P ppid parent process ID
+r rss resident set size
+R resident resident pages
+s size memory size in kilobytes
+S share amount of shared pages
+t tty the minor device number of tty
+T start_time time process was started
+U uid user ID number
+u user user name
+v vsize total VM size in kB
+y priority kernel scheduling priority
+
+
+AIX FORMAT DESCRIPTORS
+
+This ps supports AIX format descriptors, which work somewhat like the
+formatting codes of printf(1) and printf(3). For example, the normal
+default output can be produced with this: ps -eo "%p %y %x %c"
+
+CODE NORMAL HEADER
+%C pcpu %CPU
+%G group GROUP
+%P ppid PPID
+%U user USER
+%a args COMMAND
+%c comm COMMAND
+%g rgroup RGROUP
+%n nice NI
+%p pid PID
+%r pgid PGID
+%t etime ELAPSED
+%u ruser RUSER
+%x time TIME
+%y tty TTY
+%z vsz VSZ
+
+
+STANDARD FORMAT SPECIFIERS
+
+These may be used to control both output format and sorting.
+For example: ps -eo pid,user,args --sort user
+
+CODE HEADER
+%cpu %CPU
+%mem %MEM
+alarm ALARM
+args COMMAND
+blocked BLOCKED
+bsdstart START
+bsdtime TIME
+c C
+caught CAUGHT
+cmd CMD
+comm COMMAND
+command COMMAND
+cputime TIME
+drs DRS
+dsiz DSIZ
+egid EGID
+egroup EGROUP
+eip EIP
+esp ESP
+etime ELAPSED
+euid EUID
+euser EUSER
+f F
+fgid FGID
+fgroup FGROUP
+flag F
+flags F
+fname COMMAND
+fsgid FSGID
+fsgroup FSGROUP
+fsuid FSUID
+fsuser FSUSER
+fuid FUID
+fuser FUSER
+gid GID
+group GROUP
+ignored IGNORED
+intpri PRI
+lim LIM
+longtname TTY
+lstart STARTED
+m_drs DRS
+m_trs TRS
+maj_flt MAJFL
+majflt MAJFLT
+min_flt MINFL
+minflt MINFLT
+ni NI
+nice NI
+nwchan WCHAN
+opri PRI
+pagein PAGEIN
+pcpu %CPU
+pending PENDING
+pgid PGID
+pgrp PGRP
+pid PID
+pmem %MEM
+ppid PPID
+pri PRI
+priority PRI
+rgid RGID
+rgroup RGROUP
+rss RSS
+rssize RSS
+rsz RSZ
+ruid RUID
+ruser RUSER
+s S
+sess SESS
+session SESS
+sgi_p P
+sgi_rss RSS
+sgid SGID
+sgroup SGROUP
+sid SID
+sig PENDING
+sig_block BLOCKED
+sig_catch CATCHED
+sig_ignore IGNORED
+sig_pend SIGNAL
+sigcatch CAUGHT
+sigignore IGNORED
+sigmask BLOCKED
+stackp STACKP
+start STARTED
+start_stack STACKP
+start_time START
+stat STAT
+state S
+stime STIME
+suid SUID
+suser SUSER
+svgid SVGID
+svgroup SVGROUP
+svuid SVUID
+svuser SVUSER
+sz SZ
+time TIME
+timeout TMOUT
+tmout TMOUT
+tname TTY
+tpgid TPGID
+trs TRS
+trss TRSS
+tsiz TSIZ
+tt TT
+tty TT
+tty4 TTY
+tty8 TTY
+ucmd CMD
+ucomm COMMAND
+uid UID
+uid_hack UID
+uname USER
+user USER
+vsize VSZ
+vsz VSZ
+wchan WCHAN
+
+
+
+
+ENVIRONMENT VARIABLES
+The following environment variables could affect ps:
+ COLUMNS Override default display width.
+ LINES Override default display height.
+ PS_PERSONALITY Set to one of posix,old,linux,bsd,sun,digital...
+ CMD_ENV Set to one of posix,old,linux,bsd,sun,digital...
+ I_WANT_A_BROKEN_PS Force obsolete command line interpretation.
+ LC_TIME Date format.
+ PS_COLORS Not currently supported.
+ PS_FORMAT Default output format override.
+ PS_SYSMAP Default namelist (System.map) location.
+ PS_SYSTEM_MAP Default namelist (System.map) location.
+ POSIXLY_CORRECT Don't find excuses to ignore bad "features".
+ UNIX95 Don't find excuses to ignore bad "features".
+ _XPG Cancel CMD_ENV=irix non-standard behavior.
+
+In general, it is a bad idea to set these variables. The one exception
+is CMD_ENV or PS_PERSONALITY, which could be set to Linux for normal
+systems. Without that setting, ps follows the useless and bad parts
+of the Unix98 standard.
+
+
+PERSONALITY
+ 390 like the S/390 OpenEdition ps
+ aix like AIX ps
+ bsd like FreeBSD ps (totally non-standard)
+ compaq like Digital Unix ps
+ debian like the old Debian ps
+ digital like Digital Unix ps
+ gnu like the old Debian ps
+ hp like HP-UX ps
+ hpux like HP-UX ps
+ irix like Irix ps
+ linux ***** RECOMMENDED *****
+ old like the original Linux ps (totally non-standard)
+ posix standard
+ sco like SCO ps
+ sgi like Irix ps
+ sun like SunOS 4 ps (totally non-standard)
+ sunos like SunOS 4 ps (totally non-standard)
+ sysv standard
+ unix standard
+ unix95 standard
+ unix98 standard
+
+
+EXAMPLES
+To see every process on the system using standard syntax:
+ ps -e
+To see every process on the system using BSD syntax:
+ ps ax
+To see every process except those running as root (real & effective ID)
+ ps -U root -u root -N
+To see every process with a user-defined format:
+ ps -eo pid,tt,user,fname,tmout,f,wchan
+Odd display with AIX field descriptors:
+ ps -o "%u : %U : %p : %a"
+Print only the process IDs of syslogd:
+ ps -C syslogd -o pid=
+
+SEE ALSO
+top(1) pstree(1) proc(5)
+
+STANDARDS
+This ps conforms to version 2 of the Single Unix Specification.
+
+AUTHOR
+ps was originally written by Branko Lankester <lankeste@fwi.uva.nl>. Michael
+K. Johnson <johnsonm@redhat.com> re-wrote it significantly to use the proc
+filesystem, changing a few things in the process. Michael Shields
+<mjshield@nyx.cs.du.edu> added the pid-list feature. Charles Blake
+<cblake@bbn.com> added multi-level sorting, the dirent-style library, the
+device name-to-number mmaped database, the approximate binary search
+directly on System.map, and many code and documentation cleanups. David
+Mossberger-Tang wrote the generic BFD support for psupdate. Albert Cahalan
+<acahalan@cs.uml.edu> rewrote ps for full Unix98 and BSD support, along with
+some ugly hacks for obsolete and foreign syntax.
+
+Please send bug reports to <acahalan@cs.uml.edu>
--- /dev/null
+-u 500 -o pid,ppid,fname,comm,args # right margin trouble
+-u 500 -o pid,ppid,fname,comm,args,wchan,wchan,wchan,wchan,wchan,nice,wchan
+-u 500 -o pid,pid,pid,pid,user,user,user,args # had trouble
+-u 500 -o user,user,user,pid,pid,pid,pid,args # no trouble!
+
+Test with each type of field (RIGHT,LEFT,UNLIMITED...) hanging off the
+edge of the screen and each type of field to the left of the one that
+hangs off the edge.
+
+Test "ps ef" as _both_ normal user and root. Especially after su!
+
+On a 108-col screen, try "ps alx" and "ps alx | cat"
+
+These ought to be the same:
+CMD_ENV=old ps -m
+CMD_ENV=old ps m
+
+These ought to be the same:
+CMD_ENV=old ps -X
+CMD_ENV=old ps X
+ps X
+ps -X # needs to be a non-SysV option
+
+This should fail:
+ps x -x
+
--- /dev/null
+/*
+ * Copyright 1998 by Albert Cahalan; all rights resered.
+ * This file may be used subject to the terms and conditions of the
+ * GNU Library General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "common.h"
+#include "../proc/readproc.h"
+#include "../proc/procps.h"
+
+#define session_leader(p) ((p)->session == (p)->pid)
+#define process_group_leader(p) ((p)->pgid == (p)->pid)
+#define without_a_tty(p) ((unsigned short)((p)->tty) == (unsigned short)-1)
+#define some_other_user(p) ((p)->euid != cached_euid)
+#define running(p) (((p)->state=='R')||((p)->state=='D'))
+#define has_our_euid(p) ((unsigned short)((p)->euid) == (unsigned short)cached_euid)
+#define on_our_tty(p) ((unsigned short)((p)->tty) == (unsigned short)cached_tty)
+
+static unsigned long select_bits = 0;
+
+/***** prepare select_bits for use */
+const char *select_bits_setup(void){
+ int switch_val = 0;
+ /* don't want a 'g' screwing up simple_select */
+ if(!simple_select && !prefer_bsd_defaults){
+ select_bits = 0xaa00; /* the STANDARD selection */
+ return NULL;
+ }
+ /* For every BSD but SunOS, the 'g' option is a NOP. (enabled by default) */
+ if( !(personality & PER_NO_DEFAULT_g) && !(simple_select&(SS_U_a|SS_U_d)) )
+ switch_val = simple_select|SS_B_g;
+ else
+ switch_val = simple_select;
+ switch(switch_val){
+ /* UNIX options */
+ case SS_U_a | SS_U_d: select_bits = 0x3f3f; break; /* 3333 or 3f3f */
+ case SS_U_a: select_bits = 0x0303; break; /* 0303 or 0f0f */
+ case SS_U_d: select_bits = 0x3333; break;
+ /* SunOS 4 only (others have 'g' enabled all the time) */
+ case 0: select_bits = 0x0202; break;
+ case SS_B_a: select_bits = 0x0303; break;
+ case SS_B_x : select_bits = 0x2222; break;
+ case SS_B_x | SS_B_a: select_bits = 0x3333; break;
+ /* General BSD options */
+ case SS_B_g : select_bits = 0x0a0a; break;
+ case SS_B_g | SS_B_a: select_bits = 0x0f0f; break;
+ case SS_B_g | SS_B_x : select_bits = 0xaaaa; break;
+ case SS_B_g | SS_B_x | SS_B_a: /* convert to -e instead of using 0xffff */
+ all_processes = 1;
+ simple_select = 0;
+ break;
+ default:
+ return "Process selection options conflict.";
+ break;
+ }
+ return NULL;
+}
+
+/***** selected by simple option? */
+static int table_accept(proc_t *buf){
+ unsigned proc_index;
+ proc_index = (has_our_euid(buf) <<0)
+ | (session_leader(buf) <<1)
+ | (without_a_tty(buf) <<2)
+ | (on_our_tty(buf) <<3);
+ return (select_bits & (1<<proc_index));
+}
+
+/***** selected by some kind of list? */
+static int proc_was_listed(proc_t *buf){
+ selection_node *sn = selection_list;
+ int i;
+ if(!sn) return 0;
+ while(sn){
+ switch(sn->typecode){
+ default:
+ printf("Internal error in ps! Please report this bug.\n");
+
+#define return_if_match(foo,bar) \
+ i=sn->n; while(i--) \
+ if((unsigned short )(buf->foo) == (unsigned short)(*(sn->u+i)).bar) \
+ return 1
+
+ break; case SEL_RUID: return_if_match(ruid,uid);
+ break; case SEL_EUID: return_if_match(euid,uid);
+ break; case SEL_SUID: return_if_match(suid,uid);
+ break; case SEL_FUID: return_if_match(fuid,uid);
+
+ break; case SEL_RGID: return_if_match(rgid,gid);
+ break; case SEL_EGID: return_if_match(egid,gid);
+ break; case SEL_SGID: return_if_match(sgid,gid);
+ break; case SEL_FGID: return_if_match(fgid,gid);
+
+ break; case SEL_PGRP: return_if_match(pgrp,pid);
+ break; case SEL_PID : return_if_match(pid,pid);
+ break; case SEL_TTY : return_if_match(tty,tty);
+ break; case SEL_SESS: return_if_match(session,pid);
+
+ /* TODO Should use a long long cast for performance */
+ break; case SEL_COMM: i=sn->n; while(i--)
+ if(!strncmp( buf->cmd, (*(sn->u+i)).cmd, 8 )) return 1;
+
+
+
+#undef return_if_match
+
+ }
+ sn = sn->next;
+ }
+ return 0;
+}
+
+
+/***** This must satisfy Unix98 and as much BSD as possible */
+int want_this_proc(proc_t *buf){
+ int accepted_proc = 1; /* assume success */
+ /* elsewhere, convert T to list, U sets x implicitly */
+
+ /* handle -e -A */
+ if(all_processes) goto finish;
+
+ /* use table for -a a d g x */
+ if((simple_select || !selection_list))
+ if(table_accept(buf)) goto finish;
+
+ /* search lists */
+ if(proc_was_listed(buf)) goto finish;
+
+ /* fail, fall through to loose ends */
+ accepted_proc = 0;
+
+ /* do r N */
+finish:
+ if(running_only && !running(buf)) accepted_proc = 0;
+ if(negate_selection) return !accepted_proc;
+ return accepted_proc;
+}
--- /dev/null
+/*
+ * Copyright 1998 by Albert Cahalan; all rights resered.
+ * This file may be used subject to the terms and conditions of the
+ * GNU Library General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+/* username lookups */
+#include <sys/types.h>
+#include <pwd.h>
+#include <grp.h>
+
+#include "../proc/readproc.h"
+#include "common.h"
+
+static sf_node *sf_list = NULL; /* deferred sorting and formatting */
+static int broken; /* use gross Unix98 parsing? */
+static int have_gnu_sort = 0; /* if true, "O" must be format */
+static int already_parsed_sort = 0; /* redundantly set in & out of fn */
+static int already_parsed_format = 0;
+
+
+#define parse_sort_opt <-- arrgh! do not use this -->
+#define gnusort_parse <-- arrgh! do not use this -->
+
+
+/**************** Parse single format specifier *******************/
+static format_node *do_one_spec(const char *spec, const char *override){
+ const format_struct *fs;
+ const macro_struct *ms;
+
+ fs = search_format_array(spec);
+ if(fs){
+ int w1, w2;
+ format_node *thisnode;
+ thisnode = malloc(sizeof(format_node));
+ w1 = fs->width;
+ if(override){
+ w2 = strlen(override);
+ thisnode->width = (w1>w2)?w1:w2;
+ thisnode->name = malloc(strlen(override)+1);
+ strcpy(thisnode->name, override);
+ }else{
+ thisnode->width = w1;
+ thisnode->name = malloc(strlen(fs->head)+1);
+ strcpy(thisnode->name, fs->head);
+ }
+ thisnode->pr = fs->pr;
+ thisnode->pad = fs->pad;
+ thisnode->vendor = fs->vendor;
+ thisnode->flags = fs->flags;
+ thisnode->next = NULL;
+ return thisnode;
+ }
+
+ /* That failed, so try it as a macro. */
+ ms = search_macro_array(spec);
+ if(ms){
+ format_node *list = NULL;
+ format_node *newnode;
+ const char *walk;
+ int dist;
+ char buf[16]; /* trust strings will be short (from above, not user) */
+ walk = ms->head;
+ while(*walk){
+ dist = strcspn(walk, ", ");
+ strncpy(buf,walk,dist);
+ buf[dist] = '\0';
+ newnode = do_one_spec(buf,override); /* call self, assume success */
+ newnode->next = list;
+ list = newnode;
+ walk += dist;
+ if(*walk) walk++;
+ }
+ return list;
+ }
+ return NULL; /* bad, spec not found */
+}
+
+
+/************ must wrap user format in default *************/
+static void O_wrap(sf_node *sfn, int otype){
+ format_node *fnode;
+ format_node *endp;
+ char *trailer;
+
+ trailer = (otype=='b') ? "END_BSD" : "END_SYS5" ;
+
+ fnode = do_one_spec("pid",NULL);
+ if(!fnode)fprintf(stderr,"Seriously crashing. Goodbye cruel world.\n");
+ endp = sfn->f_cooked; while(endp->next) endp = endp->next; /* find end */
+ endp->next = fnode;
+
+ fnode = do_one_spec(trailer,NULL);
+ if(!fnode)fprintf(stderr,"Seriously crashing. Goodbye cruel world.\n");
+ endp = fnode; while(endp->next) endp = endp->next; /* find end */
+ endp->next = sfn->f_cooked;
+ sfn->f_cooked = fnode;
+}
+
+/******************************************************************
+ * Used to parse option AIX field descriptors.
+ * Put each completed format_node onto the list starting at ->f_cooked
+ */
+static const char *aix_format_parse(sf_node *sfn){
+ char *buf; /* temp copy of arg to hack on */
+ char *walk;
+ int items;
+
+ /*** sanity check and count items ***/
+ items = 0;
+ walk = sfn->sf;
+ /* state machine */ {
+ int c;
+ initial:
+ c = *walk++;
+ if(c=='%') goto get_desc;
+ if(!c) goto looks_ok;
+ /* get_text: */
+ items++;
+ get_more_text:
+ c = *walk++;
+ if(c=='%') goto get_desc;
+ if(c) goto get_more_text;
+ goto looks_ok;
+ get_desc:
+ items++;
+ c = *walk++;
+ if(c) goto initial;
+ return "Improper AIX field descriptor.";
+ looks_ok:
+ }
+
+ /*** sanity check passed ***/
+ buf = malloc(strlen(sfn->sf)+1);
+ strcpy(buf, sfn->sf);
+ walk = sfn->sf;
+
+ while(items--){
+ format_node *fnode; /* newly allocated */
+ format_node *endp; /* for list manipulation */
+
+ if(*walk == '%'){
+ const aix_struct *aix;
+ walk++;
+ if(*walk == '%') goto double_percent;
+ aix = search_aix_array(*walk);
+ walk++;
+ if(!aix){
+ free(buf);
+ return "Unknown AIX field descriptor.";
+ }
+ fnode = do_one_spec(aix->spec, aix->head);
+ if(!fnode){
+ free(buf);
+ return "AIX field descriptor processing bug.";
+ }
+ } else {
+ int len;
+ len = strcspn(walk, "%");
+ memcpy(buf,walk,len);
+ if(0){
+double_percent:
+ len = 1;
+ buf[0] = '%';
+ }
+ buf[len] = '\0';
+ walk += len;
+ fnode = malloc(sizeof(format_node));
+ fnode->width = len;
+ fnode->name = malloc(len+1);
+ strcpy(fnode->name, buf);
+ fnode->pr = NULL; /* checked for */
+ fnode->pad = 0;
+ fnode->vendor = AIX;
+ fnode->flags = 0;
+ fnode->next = NULL;
+ }
+
+ endp = fnode; while(endp->next) endp = endp->next; /* find end */
+ endp->next = sfn->f_cooked;
+ sfn->f_cooked = fnode;
+ }
+ free(buf);
+ already_parsed_format = 1;
+ return NULL;
+}
+
+/***************************************************************
+ * Used to parse option O lists. Option O is shared between
+ * sorting and formatting. Users may expect one or the other.
+ * The "broken" flag enables a really bad Unix98 misfeature.
+ * Put each completed format_node onto the list starting at ->f_cooked
+ */
+static const char *format_parse(sf_node *sfn){
+ char *buf; /* temp copy of arg to hack on */
+ char *sep_loc; /* separator location: " \t,\n" */
+ char *walk;
+ const char *err; /* error code that could or did happen */
+ format_node *fnode;
+ int items;
+ int need_item;
+ static char errbuf[80]; /* for variable-text error message */
+
+ /*** prepare to operate ***/
+ buf = malloc(strlen(sfn->sf)+1);
+ strcpy(buf, sfn->sf);
+
+ /*** sanity check and count items ***/
+ need_item = 1; /* true */
+ items = 0;
+ walk = buf;
+ do{
+ switch(*walk){
+ case ' ': case ',': case '\t': case '\n': case '\0':
+ /* Linux extension: allow \t and \n as delimiters */
+ if(need_item){
+ free(buf);
+ goto improper;
+ }
+ need_item=1;
+ break;
+ case '=':
+ if(broken) goto out;
+ /* fall through */
+ default:
+ if(need_item) items++;
+ need_item=0;
+ }
+ } while (*++walk);
+out:
+ if(!items){
+ free(buf);
+ goto empty;
+ }
+#ifdef STRICT_LIST
+ if(need_item){ /* can't have trailing deliminator */
+ free(buf);
+ goto improper;
+ }
+#else
+ if(need_item){ /* allow 1 trailing deliminator */
+ *--walk='\0'; /* remove the trailing deliminator */
+ }
+#endif
+ /*** actually parse the list ***/
+ walk = buf;
+ while(items--){
+ format_node *endp;
+ char *equal_loc;
+ sep_loc = strpbrk(walk," ,\t\n");
+ /* if items left, then sep_loc is not in header override */
+ if(items && sep_loc) *sep_loc = '\0';
+ equal_loc = strpbrk(walk,"=");
+ if(equal_loc){ /* if header override */
+ *equal_loc = '\0';
+ equal_loc++;
+ }
+ fnode = do_one_spec(walk,equal_loc);
+ if(!fnode){
+ if(!*errbuf){ /* if didn't already create an error string */
+ snprintf(
+ errbuf,
+ sizeof(errbuf),
+ "Unknown user-defined format specifier \"%s\".",
+ walk
+ );
+ }
+ free(buf);
+ goto unknown;
+ }
+ endp = fnode; while(endp->next) endp = endp->next; /* find end */
+ endp->next = sfn->f_cooked;
+ sfn->f_cooked = fnode;
+ walk = sep_loc + 1; /* point to next item, if any */
+ }
+ free(buf);
+ already_parsed_format = 1;
+ return NULL;
+
+ /* errors may cause a retry looking for AIX format codes */
+ if(0) unknown: err=errbuf;
+ if(0) empty: err="Empty format list.";
+ if(0) improper: err="Improper format list.";
+ if(strchr(sfn->sf,'%')) err = aix_format_parse(sfn);
+ return err;
+}
+
+/**************** Parse single sort specifier *******************/
+static sort_node *do_one_sort_spec(const char *spec){
+ const format_struct *fs;
+ int reverse = 0;
+ if(*spec == '-'){
+ reverse = 1;
+ spec++;
+ }
+ fs = search_format_array(spec);
+ if(fs){
+ sort_node *thisnode;
+ thisnode = malloc(sizeof(format_node));
+ thisnode->sr = fs->sr;
+ thisnode->reverse = reverse;
+ thisnode->next = NULL;
+ return thisnode;
+ }
+ return NULL; /* bad, spec not found */
+}
+
+
+/**************************************************************
+ * Used to parse long sorting options.
+ * Put each completed sort_node onto the list starting at ->s_cooked
+ */
+static const char *long_sort_parse(sf_node *sfn){
+ char *buf; /* temp copy of arg to hack on */
+ char *sep_loc; /* separator location: " \t,\n" */
+ char *walk;
+ const char *err; /* error code that could or did happen */
+ sort_node *snode;
+ int items;
+ int need_item;
+
+ /*** prepare to operate ***/
+ buf = malloc(strlen(sfn->sf)+1);
+ strcpy(buf, sfn->sf);
+
+ /*** sanity check and count items ***/
+ need_item = 1; /* true */
+ items = 0;
+ walk = buf;
+ err = "Improper sort specifier list.";
+ do{
+ switch(*walk){
+ case ' ': case ',': case '\t': case '\n': case '\0':
+ if(need_item){
+ free(buf);
+ return "Improper sort list";
+ }
+ need_item=1;
+ break;
+ default:
+ if(need_item) items++;
+ need_item=0;
+ }
+ } while (*++walk);
+ if(!items){
+ free(buf);
+ return "Empty sort list.";
+ }
+#ifdef STRICT_LIST
+ if(need_item){ /* can't have trailing deliminator */
+ free(buf);
+ return "Improper sort list.";
+ }
+#else
+ if(need_item){ /* allow 1 trailing deliminator */
+ *--walk='\0'; /* remove the trailing deliminator */
+ }
+#endif
+ /*** actually parse the list ***/
+ walk = buf;
+ while(items--){
+ sort_node *endp;
+ sep_loc = strpbrk(walk," ,\t\n");
+ if(sep_loc) *sep_loc = '\0';
+ snode = do_one_sort_spec(walk);
+ if(!snode){
+ free(buf);
+ return "Unknown sort specifier.";
+ }
+ endp = snode; while(endp->next) endp = endp->next; /* find end */
+ endp->next = sfn->s_cooked;
+ sfn->s_cooked = snode;
+ walk = sep_loc + 1; /* point to next item, if any */
+ }
+ free(buf);
+ already_parsed_sort = 1;
+ return NULL;
+}
+
+
+
+
+
+
+/************ pre-parse short sorting option *************/
+/* Errors _must_ be detected so that the "O" option can try to
+ * reparse as formatting codes.
+ */
+static const char *verify_short_sort(const char *arg){
+ const char *all = "CGJKMNPRSTUcfgjkmnoprstuvy+-";
+ char checkoff[256];
+ int i;
+ const char *walk;
+ int tmp;
+ if(strspn(arg,all) != strlen(arg)) return "Bad sorting code.";
+ for(i=256; i--;) checkoff[i] = 0;
+ walk = arg;
+ for(;;){
+ tmp = *walk;
+ switch(tmp){
+ case '\0':
+ return NULL; /* looks good */
+ case '+':
+ case '-':
+ tmp = *(walk+1);
+ if(!tmp || tmp=='+' || tmp=='-') return "Bad sorting code.";
+ break;
+ case 'P':
+ if(forest_type) return "PPID sort and forest output conflict.";
+ /* fall through */
+ default:
+ if(checkoff[tmp]) return "Bad sorting code."; /* repeated */
+ /* ought to check against already accepted sort options */
+ checkoff[tmp] = 1;
+ break;
+ }
+ walk++;
+ }
+}
+
+
+
+/************ parse short sorting option *************/
+static const char *short_sort_parse(sf_node *sfn){
+ int direction = 0;
+ const char *walk;
+ int tmp;
+ sort_node *snode;
+ sort_node *endp;
+ const struct shortsort_struct *ss;
+ walk = sfn->sf;
+ for(;;){
+ tmp = *walk;
+ switch(tmp){
+ case '\0':
+ already_parsed_sort = 1;
+ return NULL;
+ case '+':
+ direction = 0;
+ break;
+ case '-':
+ direction = 1;
+ break;
+ default:
+ ss = search_shortsort_array(tmp);
+ if(!ss) return "Unknown sort specifier.";
+ snode = do_one_sort_spec(ss->spec);
+ if(!snode) return "Unknown sort specifier.";
+ snode->reverse = direction;
+ endp = snode; while(endp->next) endp = endp->next; /* find end */
+ endp->next = sfn->s_cooked;
+ sfn->s_cooked = snode;
+ direction = 0;
+ break;
+ }
+ walk++;
+ }
+}
+
+/******************* high-level below here *********************/
+
+
+/*
+ * Used to parse option O lists. Option O is shared between
+ * sorting and formatting. Users may expect one or the other.
+ * The "broken" flag enables a really bad Unix98 misfeature.
+ * Recursion is to preserve original order.
+ */
+static const char *parse_O_option(sf_node *sfn){
+ const char *err; /* error code that could or did happen */
+
+ if(sfn->next){
+ err = parse_O_option(sfn->next);
+ if(err) return err;
+ }
+
+ switch(sfn->sf_code){
+ case SF_B_o: case SF_G_format: case SF_U_o: /*** format ***/
+ err = format_parse(sfn);
+ if(!err) already_parsed_format = 1;
+ break;
+ case SF_U_O: /*** format ***/
+ /* Can have -l -f f u... set already_parsed_format like DEC does */
+ if(already_parsed_format) return "option -O can not follow other format options.";
+ err = format_parse(sfn);
+ if(err) return err;
+ already_parsed_format = 1;
+ O_wrap(sfn,'u'); /* must wrap user format in default */
+ break;
+ case SF_B_O: /*** both ***/
+ if(have_gnu_sort || already_parsed_sort) err = "Multiple sort options.";
+ else err = verify_short_sort(sfn->sf);
+ if(!err){ /* success as sorting code */
+ short_sort_parse(sfn);
+ already_parsed_sort = 1;
+ return NULL;
+ }
+ if(already_parsed_format){
+ err = "option O is neither first format nor sort order.";
+ break;
+ }
+ if(!format_parse(sfn)){ /* if success as format code */
+ already_parsed_format = 1;
+ O_wrap(sfn,'b'); /* must wrap user format in default */
+ return NULL;
+ }
+ break;
+ case SF_G_sort: case SF_B_m: /*** sort ***/
+ if(already_parsed_sort) err = "Multiple sort options.";
+ else err = long_sort_parse(sfn);
+ already_parsed_sort = 1;
+ break;
+ default: /*** junk ***/
+ return "Bug: parse_O_option got weirdness!";
+ }
+ return err; /* could be NULL */
+}
+
+
+/************ Main parser calls this to save lists for later **********/
+/* store data for later and return 1 if arg looks non-standard */
+int defer_sf_option(const char *arg, int source){
+ sf_node *sfn;
+ char buf[16];
+ int dist;
+ const format_struct *fs;
+ int need_item = 1;
+
+ sfn = malloc(sizeof(sf_node));
+ sfn->sf = malloc(strlen(arg)+1);
+ strcpy(sfn->sf, arg);
+ sfn->sf_code = source;
+ sfn->s_cooked = NULL;
+ sfn->f_cooked = NULL;
+ sfn->next = sf_list;
+ sf_list = sfn;
+
+ if(source == SF_G_sort) have_gnu_sort = 1;
+
+ /* Now try to find an excuse to ignore broken Unix98 parsing. */
+ if(source != SF_U_o) return 1; /* Wonderful! Already non-Unix98. */
+ do{
+ switch(*arg){
+ case ' ': case ',': case '\0': /* no \t\n\r support in Unix98 */
+ if(need_item) return 1; /* something wrong */
+ need_item=1;
+ break;
+ case '=':
+ if(need_item) return 1; /* something wrong */
+ return 0; /* broken Unix98 parsing is required */
+ default:
+ if(!need_item) break;
+ need_item=0;
+ dist = strcspn(arg,", =");
+ if(dist>15) return 1; /* something wrong, sort maybe? */
+ strncpy(buf,arg,dist); /* no '\0' on end */
+ buf[dist] = '\0'; /* fix that problem */
+ fs = search_format_array(buf);
+ if(!fs) return 1; /* invalid spec, macro or sort maybe? */
+ if(fs->vendor) return 1; /* Wonderful! Legal non-Unix98 spec. */
+ }
+ } while (*++arg);
+
+ return 0; /* boring, Unix98 is no change */
+}
+
+/***** Since ps is not long-lived, the memory leak can be ignored. ******/
+void reset_sortformat(void){
+ sf_list = NULL; /* deferred sorting and formatting */
+ format_list = NULL; /* digested formatting options */
+ sort_list = NULL; /* digested sorting options (redundant?) */
+ have_gnu_sort = 0;
+ already_parsed_sort = 0;
+ already_parsed_format = 0;
+}
+
+
+/***** Search format_list for findme, then insert putme after findme. ****/
+static int fmt_add_after(const char *findme, format_node *putme){
+ format_node *walk;
+ if(!strcmp(format_list->name, findme)){
+ putme->next = format_list->next;
+ format_list->next = putme;
+ return 1; /* success */
+ }
+ walk = format_list;
+ while(walk->next){
+ if(!strcmp(walk->next->name, findme)){
+ putme->next = walk->next->next;
+ walk->next->next = putme;
+ return 1; /* success */
+ }
+ walk = walk->next;
+ }
+ return 0; /* fail */
+}
+
+/******* Search format_list for findme, then delete it. ********/
+static int fmt_delete(const char *findme){
+ format_node *walk;
+ format_node *old;
+ if(!strcmp(format_list->name, findme)){
+ old = format_list;
+ format_list = format_list->next;
+ free(old);
+ return 1; /* success */
+ }
+ walk = format_list;
+ while(walk->next){
+ if(!strcmp(walk->next->name, findme)){
+ old = walk->next;
+ walk->next = walk->next->next;
+ free(old);
+ return 1; /* success */
+ }
+ walk = walk->next;
+ }
+ return 0; /* fail */
+}
+
+
+/************ Build a SysV format backwards. ***********/
+#define PUSH(foo) (fn=do_one_spec(foo, NULL), fn->next=format_list, format_list=fn)
+static const char *generate_sysv_list(void){
+ format_node *fn;
+ if((format_modifiers & FM_y) && !(format_flags & FF_Ul))
+ return "Modifier -y without format -l makes no sense.";
+ if(prefer_bsd_defaults){
+ if(format_flags) PUSH("cmd");
+ else PUSH("args");
+ PUSH("bsdtime");
+ if(!(format_flags & FF_Ul)) PUSH("stat");
+ }else{
+ if(format_flags & FF_Uf) PUSH("cmd");
+ else PUSH("ucmd");
+ PUSH("time");
+ }
+ PUSH("tname"); /* Unix98 says "TTY" here, yet "tty" produces "TT". */
+ if(format_flags & FF_Uf) PUSH("stime");
+ /* avoid duplicate columns from -FP and -Fly */
+ if(format_modifiers & FM_F){
+ /* if -FP take the Sun-style column instead (sorry about "sgi_p") */
+ if(!(format_modifiers & FM_P)) PUSH("psr"); /* should be ENG */
+ /* if -Fly take the ADDR-replacement RSS instead */
+ if(!( (format_flags & FF_Ul) && (format_modifiers & FM_y) )) PUSH("rss");
+ }
+ if(format_flags & FF_Ul){
+ PUSH("wchan");
+ }
+ /* since FM_y adds RSS anyway, don't do this hack when that is true */
+ if( (format_flags & FF_Ul) && !(format_modifiers & FM_y) ){
+ if(personality & PER_IRIX_l){ /* add "rss" then ':' here */
+ PUSH("sgi_rss");
+ fn = malloc(sizeof(format_node));
+ fn->width = 1;
+ fn->name = malloc(2);
+ strcpy(fn->name, ":");
+ fn->pr = NULL; /* checked for */
+ fn->pad = 0;
+ fn->vendor = AIX; /* yes, for SGI weirdness */
+ fn->flags = 0;
+ fn->next = format_list;
+ format_list=fn;
+ }
+ }
+ if((format_modifiers & FM_F) || (format_flags & FF_Ul)){
+ PUSH("sz");
+ }
+ if(format_flags & FF_Ul){
+ if(format_modifiers & FM_y) PUSH("rss");
+ else if(personality & (PER_ZAP_ADDR|PER_IRIX_l)) PUSH("sgi_p");
+ else PUSH("addr_1");
+ }
+ if(format_modifiers & FM_c){
+ PUSH("pri"); PUSH("class");
+ }else if(format_flags & FF_Ul){
+ PUSH("ni"); PUSH("opri");
+ }
+ if((format_modifiers & FM_L) && (format_flags & FF_Uf)) PUSH("nlwp");
+ if( (format_flags & (FF_Uf|FF_Ul)) && !(format_modifiers & FM_c) ) PUSH("c");
+ if(format_modifiers & FM_P) PUSH("psr");
+ if(format_modifiers & FM_L) PUSH("lwp");
+ if(format_modifiers & FM_j){
+ PUSH("sid");
+ PUSH("pgid");
+ }
+ if(format_flags & (FF_Uf|FF_Ul)) PUSH("ppid");
+ if(format_modifiers & FM_T) PUSH("spid");
+ PUSH("pid");
+ if(format_flags & FF_Uf){
+ if(personality & PER_SANE_USER) PUSH("user");
+ else PUSH("uid_hack");
+ }else if(format_flags & FF_Ul){
+ PUSH("uid");
+ }
+ if(format_flags & FF_Ul){
+ PUSH("s");
+ if(!(format_modifiers & FM_y)) PUSH("f");
+ }
+ if(format_modifiers & FM_M){
+ PUSH("label"); /* Mandatory Access Control */
+ }
+ format_modifiers = 0;
+ return NULL;
+}
+
+
+/**************************************************************************
+ * Used to parse option O lists. Option O is shared between
+ * sorting and formatting. Users may expect one or the other.
+ * The "broken" flag enables a really bad Unix98 misfeature.
+ */
+const char *process_sf_options(int localbroken){
+ const char *err;
+ sf_node *sf_walk;
+ int option_source; /* true if user-defined */
+ if(personality & PER_BROKEN_o) localbroken = 1;
+ if(personality & PER_GOOD_o) localbroken = 0;
+ broken = localbroken;
+ if(sf_list){
+ err = parse_O_option(sf_list);
+ if(err) return err;
+ }
+
+ if(format_list) printf("Bug: must reset the list first!\n");
+
+ /* merge formatting info of sf_list into format_list here */
+ sf_walk = sf_list;
+ while(sf_walk){
+ format_node *fmt_walk;
+ fmt_walk = sf_walk->f_cooked;
+ sf_walk->f_cooked = NULL;
+ while(fmt_walk){ /* put any nodes onto format_list in opposite way */
+ format_node *travler;
+ travler = fmt_walk;
+ fmt_walk = fmt_walk->next;
+ travler->next = format_list;
+ format_list = travler;
+ }
+ sf_walk = sf_walk->next;
+ }
+
+ /* merge sorting info of sf_list into sort_list here */
+ sf_walk = sf_list;
+ while(sf_walk){
+ sort_node *srt_walk;
+ srt_walk = sf_walk->s_cooked;
+ sf_walk->s_cooked = NULL;
+ while(srt_walk){ /* put any nodes onto sort_list in opposite way */
+ sort_node *travler;
+ travler = srt_walk;
+ srt_walk = srt_walk->next;
+ travler->next = sort_list;
+ sort_list = travler;
+ }
+ sf_walk = sf_walk->next;
+ }
+
+ if(format_list){
+ if(format_flags) return "Conflicting format options.";
+ option_source = 1;
+ }else{
+ format_node *fmt_walk;
+ format_node *fn;
+ const char *spec;
+ switch(format_flags){
+
+ default: return "Conflicting format options.";
+
+ /* These can be NULL, which enables SysV list generation code. */
+ case 0: spec=NULL; break;
+ case FF_Uf | FF_Ul: spec=sysv_fl_format; break;
+ case FF_Uf: spec=sysv_f_format; break;
+ case FF_Ul: spec=sysv_l_format; break;
+
+ /* These are NOT REACHED for normal -j processing. */
+ case FF_Uj: spec=sysv_j_format; break; /* Debian & Digital */
+ case FF_Uj | FF_Ul: spec="RD_lj"; break; /* Debian */
+ case FF_Uj | FF_Uf: spec="RD_fj"; break; /* Debian */
+
+ /* These are true BSD options. */
+ case FF_Bj: spec=bsd_j_format; break;
+ case FF_Bl: spec=bsd_l_format; break;
+ case FF_Bs: spec=bsd_s_format; break;
+ case FF_Bu: spec=bsd_u_format; break;
+ case FF_Bv: spec=bsd_v_format; break;
+
+ /* These are old Linux options. Option m is overloaded. */
+ case FF_LX: spec="OL_X"; break;
+ case FF_Lm: spec="OL_m"; break;
+
+ } /* end switch(format_flags) */
+
+ option_source = 0;
+ if(!format_flags && !format_modifiers){ /* was default */
+ char *tmp;
+ tmp = getenv("PS_FORMAT"); /* user override kills default */
+ if(tmp && *tmp){
+ spec = tmp;
+ option_source = 2;
+ }
+ }
+
+ if(spec){
+ fn = do_one_spec(spec, NULL); /* use override "" for no headers */
+ fmt_walk = fn;
+ while(fmt_walk){ /* put any nodes onto format_list in opposite way */
+ format_node *travler;
+ travler = fmt_walk;
+ fmt_walk = fmt_walk->next;
+ travler->next = format_list;
+ format_list = travler;
+ }
+ }else{
+ err = generate_sysv_list();
+ if(err) return err;
+ option_source = 3;
+ }
+ }
+ if(format_modifiers){ /* generate_sysv_list() may have cleared some bits */
+ format_node *fn;
+ if(option_source) return "Can't use output modifiers with user-defined output";
+ if(format_modifiers & FM_j){
+ fn = do_one_spec("pgid", NULL);
+ if(!fmt_add_after("PPID", fn)) if(!fmt_add_after("PID", fn))
+ return "Internal error, no PID or PPID for -j option.";
+ fn = do_one_spec("sid", NULL);
+ if(!fmt_add_after("PGID", fn)) return "Lost my PGID!";
+ }
+ if(format_modifiers & FM_y){
+ /* TODO: check for failure to do something, and complain if so */
+ fmt_delete("F");
+ fn = do_one_spec("rss", NULL);
+ if(fmt_add_after("ADDR", fn)) fmt_delete("ADDR");
+ }
+ if(format_modifiers & FM_c){
+ fmt_delete("%CPU"); fmt_delete("CPU"); fmt_delete("CP"); fmt_delete("C");
+ fmt_delete("NI");
+ fn = do_one_spec("class", NULL);
+ if(!fmt_add_after("PRI", fn))
+ return "Internal error, no PRI for -c option.";
+ fmt_delete("PRI"); /* we want a different one */
+ fn = do_one_spec("pri", NULL);
+ if(!fmt_add_after("CLS", fn)) return "Lost my CLS!";
+ }
+ }
+ if(!option_source){ /* OK to really muck with stuff */
+ format_node *fn;
+ /* Do personality-specific translations not covered by format_flags.
+ * Generally, these only get hit when personality overrides unix output.
+ * That (mostly?) means the Digital and Debian personalities.
+ */
+ if((personality & PER_ZAP_ADDR) && (format_flags & FF_Ul)){
+ fn = do_one_spec("sgi_p", NULL);
+ if(fmt_add_after("ADDR", fn)) fmt_delete("ADDR");
+ }
+ if((personality & PER_SANE_USER) && (format_flags & FF_Uf)){
+ fn = do_one_spec("user", NULL);
+ if(fmt_add_after("UID", fn)) fmt_delete("UID");
+ }
+ }
+
+ /* Could scan for duplicates (format and sort) here. Digital does. */
+ return NULL;
+}
+
--- /dev/null
+/*
+ * Gnu debugger stack trace code provided by Peter Mattis
+ * <petm@CSUA.Berkeley.EDU> on Thu, 2 Nov 1995
+ *
+ * Modified for easy use by Albert Cahalan.
+ */
+
+#include <unistd.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/time.h>
+
+#define INTERACTIVE 0
+#define STACK_TRACE 1
+
+char *stored_prog_name = "You forgot to set \"program\"";
+static int stack_trace_done;
+
+/***********/
+static void debug_stop(char **args){
+ execvp (args[0], args);
+ perror ("exec failed");
+ _exit (0);
+}
+
+/***********/
+static void stack_trace_sigchld(int signum){
+ stack_trace_done = 1;
+}
+
+/************/
+static void stack_trace(char **args){
+ pid_t pid;
+ int in_fd[2];
+ int out_fd[2];
+ fd_set fdset;
+ fd_set readset;
+ struct timeval tv;
+ int sel, index, state;
+ char buffer[256];
+ char c;
+
+ stack_trace_done = 0;
+ signal(SIGCHLD, stack_trace_sigchld);
+
+ if((pipe (in_fd) == -1) || (pipe (out_fd) == -1)){
+ perror ("could open pipe");
+ _exit (0);
+ }
+
+ pid = fork ();
+ if (pid == 0){
+ close (0); dup (in_fd[0]); /* set the stdin to the in pipe */
+ close (1); dup (out_fd[1]); /* set the stdout to the out pipe */
+ close (2); dup (out_fd[1]); /* set the stderr to the out pipe */
+ execvp (args[0], args); /* exec gdb */
+ perror ("exec failed");
+ _exit (0);
+ } else {
+ if(pid == (pid_t) -1){
+ perror ("could not fork");
+ _exit (0);
+ }
+ }
+
+ FD_ZERO (&fdset);
+ FD_SET (out_fd[0], &fdset);
+
+ write (in_fd[1], "backtrace\n", 10);
+ write (in_fd[1], "p x = 0\n", 8);
+ write (in_fd[1], "quit\n", 5);
+
+ index = 0;
+ state = 0;
+
+ for(;;){
+ readset = fdset;
+ tv.tv_sec = 1;
+ tv.tv_usec = 0;
+
+ sel = select (FD_SETSIZE, &readset, NULL, NULL, &tv);
+ if (sel == -1) break;
+
+ if((sel > 0) && (FD_ISSET (out_fd[0], &readset))){
+ if(read (out_fd[0], &c, 1)){
+ switch(state){
+ case 0:
+ if(c == '#'){
+ state = 1;
+ index = 0;
+ buffer[index++] = c;
+ }
+ break;
+ case 1:
+ buffer[index++] = c;
+ if((c == '\n') || (c == '\r')){
+ buffer[index] = 0;
+ fprintf (stderr, "%s", buffer);
+ state = 0;
+ index = 0;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ }
+ else if(stack_trace_done) break;
+ }
+
+ close (in_fd[0]);
+ close (in_fd[1]);
+ close (out_fd[0]);
+ close (out_fd[1]);
+ _exit (0);
+}
+
+/************/
+void debug(int method, char *prog_name){
+ pid_t pid;
+ char buf[16];
+ char *args[4] = { "gdb", NULL, NULL, NULL };
+ int x;
+
+ snprintf (buf, 99, "%d", getpid ());
+
+ args[1] = prog_name;
+ args[2] = buf;
+
+ pid = fork ();
+ if(pid == 0){
+ switch (method){
+ case INTERACTIVE:
+ fprintf (stderr, "debug_stop\n");
+ debug_stop(args);
+ break;
+ case STACK_TRACE:
+ fprintf (stderr, "stack_trace\n");
+ stack_trace(args);
+ break;
+ }
+ _exit(0);
+ } else if(pid == (pid_t) -1){
+ perror ("could not fork");
+ return;
+ }
+
+ x = 1;
+ while(x); /* wait for debugger? */
+}
+
+/************/
+static void stack_trace_sigsegv(int signum){
+ debug(STACK_TRACE, stored_prog_name);
+}
+
+/************/
+void init_stack_trace(char *prog_name){
+ stored_prog_name = prog_name;
+ signal(SIGSEGV, stack_trace_sigsegv);
+}
--- /dev/null
+,\" t
+.\" (The preceding line is a note to broken versions of man to tell
+.\" them to pre-process this man page with tbl)
+.\" Man page for skill and snice.
+.\" Licensed under version 2 of the GNU General Public License.
+.\" Written by Albert Cahalan, converted to a man page by
+.\" Michael K. Johnson
+.\"
+.TH SKILL 1 "March 12, 1999" "Linux" "Linux User's Manual"
+.SH NAME
+skill, snice \- report process status
+
+.SH SYNOPSIS
+.nf
+skill [signal to send] [options] process selection criteria
+snice [new priority] [options] process selection criteria
+.fi
+
+.SH DESCRIPTION
+The default signal for skill is TERM. Use -l or -L to list available signals.
+Particularly useful signals include HUP, INT, KILL, STOP, CONT, and 0.
+Alternate signals may be specified in three ways: -9 -SIGKILL -KILL.
+
+The default priority for snice is +4. (snice +4 ...)
+Priority numbers range from +20 (slowest) to -20 (fastest).
+Negative priority numbers are restricted to administrative users.
+
+.SH "GENERAL OPTIONS"
+.TS
+l l l.
+-f fast mode This is not currently useful.
+-i interactive use T{
+You will be asked to approve each action.
+T}
+-v verbose output T{
+Display information about selected processes.
+T}
+-w warnings enabled This is not currently useful.
+-n no action This only displays the process ID.
+.TE
+
+.SH "PROCESS SELECTION OPTIONS"
+Selection criteria can be: terminal, user, pid, command.
+The options below may be used to ensure correct interpretation.
+.TS
+l l.
+-t The next argument is a terminal (tty or pty).
+-u The next argument is a username.
+-p The next argument is a process ID number.
+-c The next argument is a command name.
+.TE
+
+.SH SIGNALS
+The signals listed below may be available for use with skill.
+When known, numbers and default behavior are shown.
+.TS
+lB rB lB lB
+lfCW r l l.
+Name Num Action Description
+.TH
+ALRM 14 exit
+HUP 1 exit
+INT 2 exit
+KILL 9 exit this signal may not be blocked
+PIPE 13 exit
+POLL exit
+PROF exit
+TERM 15 exit
+USR1 exit
+USR2 exit
+VTALRM exit
+STKFLT exit may not be implemented
+PWR ignore may exit on some systems
+WINCH ignore
+CHLD ignore
+URG ignore
+TSTP stop may interact with the shell
+TTIN stop may interact with the shell
+TTOU stop may interact with the shell
+STOP stop this signal may not be blocked
+CONT restart continue if stopped, otherwise ignore
+ABRT 6 core
+FPE 8 core
+ILL 4 core
+QUIT 3 core
+SEGV 11 core
+TRAP 5 core
+SYS core may not be implemented
+EMT core may not be implemented
+BUS core core dump may fail
+XCPU core core dump may fail
+XFSZ core core dump may fail
+.TE
+
+.SH EXAMPLES
+.TS
+lB lB
+lfCW l.
+Command Description
+.TC
+snice netscape crack +7 Slow down netscape and crack
+skill -KILL -v /dev/pts/* Kill users on new-style PTY devices
+skill -STOP torvalds davem tytso Stop 3 users
+snice -17 root bash Give priority to root's shell
+.TE
+
+.SH "SEE ALSO"
+top(1) kill(1) renice(1) nice(1)
+
+.SH STANDARDS
+No standards apply.
+
+.SH AUTHOR
+Albert Cahalan <acahalan@cs.uml.edu> wrote skill and snice in 1999 as a
+replacement for a non-free version. Michael K. Johnson <johnsonm@redhat.com>
+is the current maintainer of the procps collection.
+
+Please send bug reports to <acahalan@cs.uml.edu>
--- /dev/null
+/*
+ * Copyright 1998 by Albert Cahalan; all rights resered.
+ * This file may be used subject to the terms and conditions of the
+ * GNU Library General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ */
+#include <fcntl.h>
+#include <pwd.h>
+#include <dirent.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/resource.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <proc/sig.h>
+#include <proc/devname.h>
+#include <proc/procps.h> /* char *user_from_uid(uid_t uid) */
+
+static int f_flag, i_flag, v_flag, w_flag, n_flag;
+
+static int tty_count, uid_count, cmd_count, pid_count;
+static int *ttys;
+static uid_t *uids;
+static char **cmds;
+static int *pids;
+
+#define ENLIST(thing,addme) do{ \
+if(!thing##s) thing##s = malloc(sizeof(*thing##s)*saved_argc); \
+if(!thing##s) fprintf(stderr,"No memory.\n"),exit(2); \
+thing##s[thing##_count++] = addme; \
+}while(0)
+
+static int my_pid;
+static int saved_argc;
+static char **saved_argv;
+
+static int sig_or_pri;
+
+static int program;
+#define PROG_GARBAGE 0 /* keep this 0 */
+#define PROG_KILL 1
+#define PROG_SKILL 2
+/* #define PROG_NICE 3 */ /* easy, but the old one isn't broken */
+#define PROG_SNICE 4
+
+
+/********************************************************************/
+
+
+/***** kill or nice a process */
+static void hurt_proc(int tty, int uid, int pid, char *cmd){
+ int failed;
+ int saved_errno;
+ char dn_buf[1000];
+ dev_to_tty(dn_buf, 999, tty, pid, ABBREV_DEV);
+ if(i_flag){
+ char buf[8];
+ fprintf(stderr, "%-8.8s %-8.8s %5d %-16.16s ? ",
+ (char*)dn_buf,user_from_uid(uid),pid,cmd
+ );
+ if(!fgets(buf,7,stdin)){
+ printf("\n");
+ exit(0);
+ }
+ if(*buf!='y' && *buf!='Y') return;
+ }
+ /* do the actual work */
+ if(program==PROG_SKILL) failed=kill(pid,sig_or_pri);
+ else failed=setpriority(PRIO_PROCESS,pid,sig_or_pri);
+ saved_errno = errno;
+ if(w_flag && failed){
+ fprintf(stderr, "%-8.8s %-8.8s %5d %-16.16s ",
+ (char*)dn_buf,user_from_uid(uid),pid,cmd
+ );
+ errno = saved_errno;
+ perror("");
+ return;
+ }
+ if(i_flag) return;
+ if(v_flag){
+ printf("%-8.8s %-8.8s %5d %-16.16s\n",
+ (char*)dn_buf,user_from_uid(uid),pid,cmd
+ );
+ return;
+ }
+ if(n_flag){
+ printf("%d\n",pid);
+ return;
+ }
+}
+
+
+/***** check one process */
+static void check_proc(int pid){
+ char buf[128];
+ struct stat statbuf;
+ char *tmp;
+ int tty;
+ int fd;
+ int i;
+ if(pid==my_pid) return;
+ sprintf(buf, "/proc/%d/stat", pid); /* pid (cmd) state ppid pgrp session tty */
+ fd = open(buf,O_RDONLY);
+ if(fd==-1){ /* process exited maybe */
+ if(pids && w_flag) printf("WARNING: process %d could not be found.",pid);
+ return;
+ }
+ fstat(fd, &statbuf);
+ if(uids){ /* check the EUID */
+ i=uid_count;
+ while(i--) if(uids[i]==statbuf.st_uid) break;
+ if(i==-1) goto closure;
+ }
+ read(fd,buf,128);
+ buf[127] = '\0';
+ tmp = strrchr(buf, ')');
+ *tmp++ = '\0';
+ i = 5; while(i--) while(*tmp++!=' '); /* scan to find tty */
+ tty = atoi(tmp);
+ if(ttys){
+ i=tty_count;
+ while(i--) if(ttys[i]==tty) break;
+ if(i==-1) goto closure;
+ }
+ tmp = strchr(buf, '(') + 1;
+ if(cmds){
+ i=cmd_count;
+ /* fast comparison trick -- useful? */
+ while(i--) if(cmds[i][0]==*tmp && !strcmp(cmds[i],tmp)) break;
+ if(i==-1) goto closure;
+ }
+ /* This is where we kill/nice something. */
+/* fprintf(stderr, "PID %d, UID %d, TTY %d,%d, COMM %s\n",
+ pid, statbuf.st_uid, tty>>8, tty&0xf, tmp
+ );
+*/
+ hurt_proc(tty, statbuf.st_uid, pid, tmp);
+closure:
+ close(fd); /* kill/nice _first_ to avoid PID reuse */
+}
+
+
+/***** debug function */
+#if 0
+static void show_lists(void){
+ int i;
+
+ fprintf(stderr, "%d TTY: ", tty_count);
+ if(ttys){
+ i=tty_count;
+ while(i--){
+ fprintf(stderr, "%d,%d%c", (ttys[i]>>8)&0xff, ttys[i]&0xff, i?' ':'\n');
+ }
+ }else fprintf(stderr, "\n");
+
+ fprintf(stderr, "%d UID: ", uid_count);
+ if(uids){
+ i=uid_count;
+ while(i--) fprintf(stderr, "%d%c", uids[i], i?' ':'\n');
+ }else fprintf(stderr, "\n");
+
+ fprintf(stderr, "%d PID: ", pid_count);
+ if(pids){
+ i=pid_count;
+ while(i--) fprintf(stderr, "%d%c", pids[i], i?' ':'\n');
+ }else fprintf(stderr, "\n");
+
+ fprintf(stderr, "%d CMD: ", cmd_count);
+ if(cmds){
+ i=cmd_count;
+ while(i--) fprintf(stderr, "%s%c", cmds[i], i?' ':'\n');
+ }else fprintf(stderr, "\n");
+}
+#endif
+
+
+/***** iterate over all PIDs */
+static void iterate(void){
+ int pid;
+ DIR *d;
+ struct dirent *de;
+ if(pids){
+ pid = pid_count;
+ while(pid--) check_proc(pids[pid]);
+ return;
+ }
+#if 0
+ /* could setuid() and kill -1 to have the kernel wipe out a user */
+ if(!ttys && !cmds && !pids && !i_flag){
+ }
+#endif
+ d = opendir("/proc");
+ if(!d){
+ perror("/proc");
+ exit(1);
+ }
+ while(( de = readdir(d) )){
+ if(de->d_name[0] > '9') continue;
+ if(de->d_name[0] < '1') continue;
+ pid = atoi(de->d_name);
+ if(pid) check_proc(pid);
+ }
+ closedir (d);
+}
+
+/***** kill help */
+static void kill_usage(void){
+ fprintf(stderr,
+ "Usage:\n"
+ " kill pid ... Send SIGTERM to every process listed.\n"
+ " kill signal pid ... Send a signal to every process listed.\n"
+ " kill -s signal pid ... Send a signal to every process listed.\n"
+ " kill -l List all signal names.\n"
+ " kill -L List all signal names in a nice table.\n"
+ " kill -l signal Convert between signal numbers and names.\n"
+ );
+ exit(1);
+}
+
+/***** kill */
+static void kill_main(int argc, char *argv[]){
+ char *sigptr;
+ int signo = SIGTERM;
+ int exitvalue = 0;
+ if(argc<2) kill_usage();
+ if(argv[1][0]!='-'){
+ argv++;
+ argc--;
+ goto no_more_args;
+ }
+
+ /* The -l option prints out signal names. */
+ if(argv[1][1]=='l' && argv[1][2]=='\0'){
+ if(argc==2){
+ unix_print_signals();
+ exit(0);
+ }
+ /* at this point, argc must be 3 or more */
+ if(argc>128 || argv[2][0] == '-') kill_usage();
+ exit(print_given_signals(argc-2, argv+2, 80));
+ }
+
+ /* The -L option prints out signal names in a nice table. */
+ if(argv[1][1]=='L' && argv[1][2]=='\0'){
+ if(argc==2){
+ pretty_print_signals();
+ exit(0);
+ }
+ kill_usage();
+ }
+ if(argv[1][1]=='-' && argv[1][2]=='\0'){
+ argv+=2;
+ argc-=2;
+ goto no_more_args;
+ }
+ if(argv[1][1]=='-') kill_usage(); /* likely --help */
+ if(argv[1][1]=='s' && argv[1][2]=='\0'){
+ sigptr = argv[2];
+ argv+=3;
+ argc-=3;
+ }else{
+ sigptr = argv[1]+1;
+ argv+=2;
+ argc-=2;
+ }
+ signo = signal_name_to_number(sigptr);
+ if(signo<0){
+ fprintf(stderr, "ERROR: unknown signal name \"%s\".\n", sigptr);
+ kill_usage();
+ }
+no_more_args:
+ if(!argc) kill_usage(); /* nothing to kill? */
+ while(argc--){
+ long pid;
+ char *endp;
+ pid = strtol(argv[argc],&endp,10);
+ if(!*endp){
+ if(!kill((pid_t)pid,signo)) continue;
+ exitvalue = 1;
+ continue;
+ }
+ fprintf(stderr, "ERROR: garbage process ID \"%s\".\n", argv[argc]);
+ kill_usage();
+ }
+ exit(exitvalue);
+}
+
+/***** skill/snice help */
+static void skillsnice_usage(void){
+ if(program==PROG_SKILL){
+ fprintf(stderr,
+ "Usage: skill [signal to send] [options] process selection criteria\n"
+ "Example: skill -KILL -v pts/*\n"
+ "\n"
+ "The default signal is TERM. Use -l or -L to list available signals.\n"
+ "Particularly useful signals include HUP, INT, KILL, STOP, CONT, and 0.\n"
+ "Alternate signals may be specified in three ways: -SIGKILL -KILL -9\n"
+ );
+ }else{
+ fprintf(stderr,
+ "Usage: snice [new priority] [options] process selection criteria\n"
+ "Example: snice netscape crack +7\n"
+ "\n"
+ "The default priority is +4. (snice +4 ...)\n"
+ "Priority numbers range from +20 (slowest) to -20 (fastest).\n"
+ "Negative priority numbers are restricted to administrative users.\n"
+ );
+ }
+ fprintf(stderr,
+ "\n"
+ "General options:\n"
+ "-f fast mode This is not currently useful.\n"
+ "-i interactive use You will be asked to approve each action.\n"
+ "-v verbose output Display information about selected processes.\n"
+ "-w warnings enabled This is not currently useful.\n"
+ "-n no action This only displays the process ID.\n"
+ "\n"
+ "Selection criteria can be: terminal, user, pid, command.\n"
+ "The options below may be used to ensure correct interpretation.\n"
+ "-t The next argument is a terminal (tty or pty).\n"
+ "-u The next argument is a username.\n"
+ "-p The next argument is a process ID number.\n"
+ "-c The next argument is a command name.\n"
+ );
+ exit(1);
+}
+
+#if 0
+static void _skillsnice_usage(int line){
+ fprintf(stderr,"Something at line %d.\n", line);
+ skillsnice_usage();
+}
+#define skillsnice_usage() _skillsnice_usage(__LINE__)
+#endif
+
+#define NEXTARG (argc?( argc--, ((argptr=*++argv)) ):NULL)
+
+/***** common skill/snice argument parsing code */
+#define NO_PRI_VAL ((int)0xdeafbeef)
+static void skillsnice_parse(int argc, char *argv[]){
+ int signo = -1;
+ int prino = NO_PRI_VAL;
+ int force = 0;
+ int num_found = 0;
+ char *argptr;
+ if(argc<2) skillsnice_usage();
+ if(argc==2 && argv[1][0]=='-'){
+ if(!strcmp(argv[1],"-L")){
+ pretty_print_signals();
+ exit(0);
+ }
+ if(!strcmp(argv[1],"-l")){
+ unix_print_signals();
+ exit(0);
+ }
+ skillsnice_usage();
+ }
+ NEXTARG;
+ /* Time for serious parsing. What does "skill -int 123 456" mean? */
+ while(argc){
+ if(force && !num_found){ /* if forced, _must_ find something */
+ fprintf(stderr,"ERROR: -%c used with bad data.\n", force);
+ skillsnice_usage();
+ }
+ force = 0;
+ if(program==PROG_SKILL && signo<0 && *argptr=='-'){
+ signo = signal_name_to_number(argptr+1);
+ if(signo>=0){ /* found a signal */
+ if(!NEXTARG) break;
+ continue;
+ }
+ }
+ if(program==PROG_SNICE && prino==NO_PRI_VAL
+ && (*argptr=='+' || *argptr=='-') && argptr[1]){
+ long val;
+ char *endp;
+ val = strtol(argptr,&endp,10);
+ if(!*endp && val<=999 && val>=-999){
+ prino=val;
+ if(!NEXTARG) break;
+ continue;
+ }
+ }
+ /* If '-' found, collect any flags. (but lone "-" is a tty) */
+ if(*argptr=='-' && argptr[1]){
+ argptr++;
+ do{
+ switch(( force = *argptr++ )){
+ default: skillsnice_usage();
+ case 't':
+ case 'u':
+ case 'p':
+ case 'c':
+ if(!*argptr){ /* nothing left here, *argptr is '\0' */
+ if(!NEXTARG){
+ fprintf(stderr,"ERROR: -%c with nothing after it.\n", force);
+ skillsnice_usage();
+ }
+ }
+ goto selection_collection;
+ case 'f': f_flag++; break;
+ case 'i': i_flag++; break;
+ case 'v': v_flag++; break;
+ case 'w': w_flag++; break;
+ case 'n': n_flag++; break;
+ case 0:
+ NEXTARG;
+ /*
+ * If no more arguments, all the "if(argc)..." tests will fail
+ * and the big loop will exit.
+ */
+ } /* END OF SWITCH */
+ }while(force);
+ } /* END OF IF */
+selection_collection:
+ num_found = 0; /* we should find at least one thing */
+ switch(force){ /* fall through each data type */
+ default: skillsnice_usage();
+ case 0: /* not forced */
+ case 't':
+ if(argc){
+ struct stat sbuf;
+ char path[32];
+ if(!argptr) skillsnice_usage(); /* Huh? Maybe "skill -t ''". */
+ snprintf(path,32,"/dev/%s",argptr);
+ if(stat(path, &sbuf)>=0 && S_ISCHR(sbuf.st_mode)){
+ num_found++;
+ ENLIST(tty,sbuf.st_rdev);
+ if(!NEXTARG) break;
+ }else if(!(argptr[1])){ /* if only 1 character */
+ switch(*argptr){
+ default:
+ if(stat(argptr,&sbuf)<0) break; /* the shell eats '?' */
+ case '-':
+ case '?':
+ num_found++;
+ ENLIST(tty,-1);
+ if(!NEXTARG) break;
+ }
+ }
+ }
+ if(force) continue;
+ case 'u':
+ if(argc){
+ struct passwd *passwd_data;
+ passwd_data = getpwnam(argptr);
+ if(passwd_data){
+ num_found++;
+ ENLIST(uid,passwd_data->pw_uid);
+ if(!NEXTARG) break;
+ }
+ }
+ if(force) continue;
+ case 'p':
+ if(argc && *argptr>='0' && *argptr<='9'){
+ char *endp;
+ int num;
+ num = strtol(argptr, &endp, 0);
+ if(*endp == '\0'){
+ num_found++;
+ ENLIST(pid,num);
+ if(!NEXTARG) break;
+ }
+ }
+ if(force) continue;
+ if(num_found) continue; /* could still be an option */
+ case 'c':
+ if(argc){
+ num_found++;
+ ENLIST(cmd,argptr);
+ if(!NEXTARG) break;
+ }
+ } /* END OF SWITCH */
+ } /* END OF WHILE */
+ /* No more arguments to process. Must sanity check. */
+ if(!tty_count && !uid_count && !cmd_count && !pid_count){
+ fprintf(stderr,"ERROR: no process selection criteria.\n");
+ skillsnice_usage();
+ }
+ if((f_flag|i_flag|v_flag|w_flag|n_flag) & ~1){
+ fprintf(stderr,"ERROR: general flags may not be repeated.\n");
+ skillsnice_usage();
+ }
+ if(i_flag && (v_flag|f_flag|n_flag)){
+ fprintf(stderr,"ERROR: -i makes no sense with -v, -f, and -n.\n");
+ skillsnice_usage();
+ }
+ if(v_flag && (i_flag|f_flag)){
+ fprintf(stderr,"ERROR: -v makes no sense with -i and -f.\n");
+ skillsnice_usage();
+ }
+ if(n_flag && signo>=0){
+ fprintf(stderr,"ERROR: -n makes no sense with a signal.\n");
+ skillsnice_usage();
+ }
+ if(n_flag && prino!=NO_PRI_VAL){
+ fprintf(stderr,"ERROR: -n makes no sense with a priority value.\n");
+ skillsnice_usage();
+ }
+ /* OK, set up defaults */
+ if(prino==NO_PRI_VAL) prino=4;
+ if(signo<0) signo=SIGTERM;
+ if(n_flag){
+ program=PROG_SKILL;
+ signo=0; /* harmless */
+ }
+ if(program==PROG_SKILL) sig_or_pri = signo;
+ else sig_or_pri = prino;
+}
+
+/***** main body */
+int main(int argc, char *argv[]){
+ char *tmpstr;
+ my_pid = getpid();
+ saved_argv = argv;
+ saved_argc = argc;
+ if(!argc){
+ fprintf(stderr,"ERROR: could not determine own name.\n");
+ exit(1);
+ }
+ tmpstr=strrchr(*argv,'/');
+ if(tmpstr) tmpstr++;
+ if(!tmpstr) tmpstr=*argv;
+ program = PROG_GARBAGE;
+ if(*tmpstr=='s'){
+ setpriority(PRIO_PROCESS,my_pid,-20);
+ if(!strcmp(tmpstr,"snice")) program = PROG_SNICE;
+ if(!strcmp(tmpstr,"skill")) program = PROG_SKILL;
+ }else{
+ if(!strcmp(tmpstr,"kill")) program = PROG_KILL;
+ }
+ switch(program){
+ case PROG_SNICE:
+ case PROG_SKILL:
+ skillsnice_parse(argc, argv);
+/* show_lists(); */
+ iterate(); /* this is it, go get them */
+ break;
+ case PROG_KILL:
+ kill_main(argc, argv);
+ break;
+ default:
+ fprintf(stderr,"ERROR: no \"%s\" support.\n",tmpstr);
+ }
+ return 0;
+}
+
+
--- /dev/null
+.so man1/skill.1
--- /dev/null
+.\" Copyright 1999, George Staikos (staikos@0wned.org)
+.\" This file may be used subject to the terms and conditions of the
+.\" GNU General Public License Version 2, or any later version
+.\" at your option, as published by the Free Software Foundation.
+.\" This program is distributed in the hope that it will be useful,
+.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
+.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+.\" GNU General Public License for more details."
+.TH SYSCTL 8 "21 Sep 1999" "" ""
+.SH NAME
+sysctl \- configure kernel parameters at runtime
+.SH SYNOPSIS
+.B "sysctl [-n] variable ..."
+.br
+.B "sysctl [-n] -w variable=value ..."
+.br
+.B "sysctl [-n] -p <filename> (default /etc/sysctl.conf)"
+.br
+.B "sysctl [-n] -a"
+.br
+.B "sysctl [-n] -A"
+.SH DESCRIPTION
+.B sysctl
+is used to modify kernel parameters at runtime. The parameters available
+are those listed under /proc/sys/. Procfs is required for
+.B sysctl(8)
+support in Linux. You can use
+.B sysctl(8)
+to both read and write sysctl data.
+.SH PARAMETERS
+.TP
+.B "variable"
+The name of a key to read from. An example is kernel.ostype. The '/'
+separator is also accepted in place of a '.'.
+.TP
+.B "variable=value"
+To set a key, use the form variable=value, where variable is the key and
+value is the value to set it to. If the value contains quotes or characters
+which are parsed by the shell, you may need to enclose the value in double
+quotes. This requires the -w parameter to use.
+.TP
+.B "-n"
+Use this option to disable printing of the key name when printing values.
+.TP
+.B "-w"
+Use this option when you want to change a sysctl setting.
+.TP
+.B "-p"
+Load in sysctl settings from the file specified or /etc/sysctl.conf if none given.
+.TP
+.B "-a"
+Display all values currently available.
+.TP
+.B "-A"
+Display all values currently available in table form.
+.SH EXAMPLES
+.TP
+/sbin/sysctl -a
+.TP
+/sbin/sysctl -n kernel.hostname
+.TP
+/sbin/sysctl -w kernel.domainname="example.com"
+.TP
+/sbin/sysctl -p /etc/sysctl.conf
+.SH FILES
+.I /proc/sys
+.I /etc/sysctl.conf
+.SH SEE ALSO
+.BR sysctl.conf (5)
+.SH BUGS
+The -A parameter behaves just as -a does.
+.SH AUTHOR
+George Staikos, <staikos@0wned.org>
+
--- /dev/null
+
+/*
+ * Sysctl 1.01 - A utility to read and manipulate the sysctl parameters
+ *
+ *
+ * "Copyright 1999 George Staikos
+ * This file may be used subject to the terms and conditions of the
+ * GNU General Public License Version 2, or any later version
+ * at your option, as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details."
+ *
+ * Changelog:
+ * v1.01:
+ * - added -p <preload> to preload values from a file
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <string.h>
+#include <errno.h>
+
+/*
+ * Additional types we might need.
+ */
+typedef int bool;
+
+static bool true = 1;
+static bool false = 0;
+
+
+/*
+ * Function Prototypes
+ */
+int Usage(const char *name);
+void Preload(const char *filename);
+int WriteSetting(const char *setting);
+int ReadSetting(const char *setting);
+int DisplayAll(const char *path, bool ShowTableUtil);
+
+
+/*
+ * Globals...
+ */
+
+const char *PROC_PATH = "/proc/sys/";
+const char *DEFAULT_PRELOAD = "/etc/sysctl.conf";
+static bool PrintName;
+static bool PrintNewline;
+
+/* error messages */
+const char *ERR_UNKNOWN_PARAMETER = "error: Unknown parameter '%s'\n";
+const char *ERR_MALFORMED_SETTING = "error: Malformed setting '%s'\n";
+const char *ERR_NO_EQUALS = "error: '%s' must be of the form name=value\n";
+const char *ERR_INVALID_KEY = "error: '%s' is an unknown key\n";
+const char *ERR_UNKNOWN_WRITING = "error: unknown error %d setting key '%s'\n";
+const char *ERR_UNKNOWN_READING = "error: unknown error %d reading key '%s'\n";
+const char *ERR_PERMISSION_DENIED = "error: permission denied on key '%s'\n";
+const char *ERR_OPENING_DIR = "error: unable to open directory '%s'\n";
+const char *ERR_PRELOAD_FILE = "error: unable to open preload file '%s'\n";
+const char *WARN_BAD_LINE = "warning: %s(%d): invalid syntax, continuing...\n";
+
+
+#define DOTSLASH(x) do{ \
+ char *p_ = (x); \
+ for(;;){ \
+ p_ = strchr(p_, '.'); \
+ if(!p_) break; \
+ *p_ = '/'; \
+ } \
+}while(0)
+
+#define SLASHDOT(x) do{ \
+ char *p_ = (x); \
+ for(;;){ \
+ p_ = strchr(p_, '.'); \
+ if(!p_) break; \
+ *p_ = '/'; \
+ } \
+}while(0)
+
+
+/*
+ * Main...
+ *
+ */
+int main(int argc, char **argv) {
+const char *me = (const char *)basename(argv[0]);
+bool SwitchesAllowed = true;
+bool WriteMode = false;
+int ReturnCode = 0;
+const char *preloadfile = DEFAULT_PRELOAD;
+
+ PrintName = true;
+ PrintNewline = true;
+
+ if (argc < 2) {
+ return Usage(me);
+ } /* endif */
+
+ argv++;
+
+ for (; argv && *argv && **argv; argv++) {
+ if (SwitchesAllowed && **argv == '-') { /* we have a switch */
+ switch((*argv)[1]) {
+ case 'b':
+ /* This is "binary" format, which means more for BSD. */
+ PrintNewline = false;
+ /* FALL THROUGH */
+ case 'n':
+ PrintName = false;
+ break;
+ case 'w':
+ SwitchesAllowed = false;
+ WriteMode = true;
+ break;
+ case 'p':
+ argv++;
+ if (argv && *argv && **argv) {
+ preloadfile = *argv;
+ } /* endif */
+
+ Preload(preloadfile);
+ return(0);
+ break;
+ case 'a': /* string and integer values (for Linux, all of them) */
+ case 'A': /* the above, including "opaques" (would be unprintable) */
+ case 'X': /* the above, with opaques completly printed in hex */
+ SwitchesAllowed = false;
+ return DisplayAll(PROC_PATH, ((*argv)[1] == 'a') ? false : true);
+ case 'h':
+ case '?':
+ return Usage(me);
+ default:
+ fprintf(stderr, ERR_UNKNOWN_PARAMETER, *argv);
+ return Usage(me);
+ } /* end switch */
+ } else {
+ SwitchesAllowed = false;
+ if (WriteMode)
+ ReturnCode = WriteSetting(*argv);
+ else ReadSetting(*argv);
+ } /* end if */
+ } /* end for */
+
+return ReturnCode;
+} /* end main */
+
+
+
+
+
+/*
+ * Display the usage format
+ *
+ */
+int Usage(const char *name) {
+ printf("usage: %s [-n] variable ... \n"
+ " %s [-n] -w variable=value ... \n"
+ " %s [-n] -a \n"
+ " %s [-n] -p <file> (default /etc/sysctl.conf) \n"
+ " %s [-n] -A\n", name, name, name, name, name);
+return -1;
+} /* end Usage() */
+
+
+/*
+ * Strip the leading and trailing spaces from a string
+ *
+ */
+char *StripLeadingAndTrailingSpaces(char *oneline) {
+char *t;
+
+if (!oneline || !*oneline)
+ return oneline;
+
+t = oneline;
+t += strlen(oneline)-1;
+
+while ((*t == ' ' || *t == '\t' || *t == '\n' || *t == '\r') && t != oneline)
+ *t-- = 0;
+
+t = oneline;
+
+while ((*t == ' ' || *t == '\t') && *t != 0)
+ t++;
+
+return t;
+} /* end StripLeadingAndTrailingSpaces() */
+
+
+
+/*
+ * Preload the sysctl's from the conf file
+ * - we parse the file and then reform it (strip out whitespace)
+ *
+ */
+void Preload(const char *filename) {
+FILE *fp;
+char oneline[257];
+char buffer[257];
+char *t;
+int n = 0;
+char *name, *value;
+
+ if (!filename || ((fp = fopen(filename, "r")) == NULL)) {
+ fprintf(stderr, ERR_PRELOAD_FILE, filename);
+ return;
+ } /* endif */
+
+ while (fgets(oneline, 256, fp)) {
+ oneline[256] = 0;
+ n++;
+ t = StripLeadingAndTrailingSpaces(oneline);
+
+ if (strlen(t) < 2)
+ continue;
+
+ if (*t == '#' || *t == ';')
+ continue;
+
+ name = strtok(t, "=");
+ if (!name || !*name) {
+ fprintf(stderr, WARN_BAD_LINE, filename, n);
+ continue;
+ } /* endif */
+
+ StripLeadingAndTrailingSpaces(name);
+
+ value = strtok(NULL, "\n\r");
+ if (!value || !*value) {
+ fprintf(stderr, WARN_BAD_LINE, filename, n);
+ continue;
+ } /* endif */
+
+ while ((*value == ' ' || *value == '\t') && *value != 0)
+ value++;
+
+ sprintf(buffer, "%s=%s", name, value);
+ WriteSetting(buffer);
+ } /* endwhile */
+
+ fclose(fp);
+} /* end Preload() */
+
+
+
+/*
+ * Write a sysctl setting
+ *
+ */
+int WriteSetting(const char *setting) {
+int rc = 0;
+const char *name = setting;
+const char *value;
+const char *equals;
+char *tmpname;
+FILE *fp;
+char *outname;
+
+ if (!name) { /* probably dont' want to display this err */
+ return 0;
+ } /* end if */
+
+ equals = index(setting, '=');
+
+ if (!equals) {
+ fprintf(stderr, ERR_NO_EQUALS, setting);
+ return -1;
+ } /* end if */
+
+ value = equals + sizeof(char); /* point to the value in name=value */
+
+ if (!*name || !*value || name == equals) {
+ fprintf(stderr, ERR_MALFORMED_SETTING, setting);
+ return -2;
+ } /* end if */
+
+ tmpname = (char *)malloc((equals-name+1+strlen(PROC_PATH))*sizeof(char));
+ outname = (char *)malloc((equals-name+1)*sizeof(char));
+
+ strcpy(tmpname, PROC_PATH);
+ strncat(tmpname, name, (int)(equals-name));
+ tmpname[equals-name+strlen(PROC_PATH)] = 0;
+ strncpy(outname, name, (int)(equals-name));
+ outname[equals-name] = 0;
+
+ DOTSLASH(tmpname); /* change . to / */
+ SLASHDOT(outname); /* change / to . */
+
+ fp = fopen(tmpname, "w");
+
+ if (!fp) {
+ switch(errno) {
+ case ENOENT:
+ fprintf(stderr, ERR_INVALID_KEY, outname);
+ break;
+ case EACCES:
+ fprintf(stderr, ERR_PERMISSION_DENIED, outname);
+ break;
+ default:
+ fprintf(stderr, ERR_UNKNOWN_WRITING, errno, outname);
+ break;
+ } /* end switch */
+ rc = -1;
+ } else {
+ fprintf(fp, "%s\n", value);
+ fclose(fp);
+ if (PrintName) {
+ fprintf(stdout, "%s = %s\n", outname, value);
+ } else {
+ if (PrintNewline)
+ fprintf(stdout, "%s\n", value);
+ else
+ fprintf(stdout, "%s", value);
+ }
+ } /* endif */
+
+ free(tmpname);
+ free(outname);
+return rc;
+} /* end WriteSetting() */
+
+
+
+/*
+ * Read a sysctl setting
+ *
+ */
+int ReadSetting(const char *setting) {
+int rc = 0;
+char *tmpname, *outname;
+char inbuf[1025];
+const char *name = setting;
+FILE *fp;
+
+ if (!setting || !*setting) {
+ fprintf(stderr, ERR_INVALID_KEY, setting);
+ } /* endif */
+
+ tmpname = (char *)malloc((strlen(name)+strlen(PROC_PATH)+1)*sizeof(char));
+ outname = (char *)malloc((strlen(name)+1)*sizeof(char));
+
+ strcpy(tmpname, PROC_PATH);
+ strcat(tmpname, name);
+ strcpy(outname, name);
+
+
+ DOTSLASH(tmpname); /* change . to / */
+ SLASHDOT(outname); /* change / to . */
+
+ fp = fopen(tmpname, "r");
+
+ if (!fp) {
+ switch(errno) {
+ case ENOENT:
+ fprintf(stderr, ERR_INVALID_KEY, outname);
+ break;
+ case EACCES:
+ fprintf(stderr, ERR_PERMISSION_DENIED, outname);
+ break;
+ default:
+ fprintf(stderr, ERR_UNKNOWN_READING, errno, outname);
+ break;
+ } /* end switch */
+ rc = -1;
+ } else {
+ while(fgets(inbuf, 1024, fp)) {
+ /* already has the \n in it */
+ if (PrintName) {
+ fprintf(stdout, "%s = %s", outname, inbuf);
+ } else {
+ if (!PrintNewline) {
+ char *nlptr = strchr(inbuf,'\n');
+ if(nlptr) *nlptr='\0';
+ }
+ fprintf(stdout, "%s", inbuf);
+ }
+ } /* endwhile */
+ fclose(fp);
+ } /* endif */
+
+ free(tmpname);
+ free(outname);
+return rc;
+} /* end ReadSetting() */
+
+
+
+/*
+ * Display all the sysctl settings
+ *
+ */
+int DisplayAll(const char *path, bool ShowTableUtil) {
+int rc = 0;
+int rc2;
+DIR *dp;
+struct dirent *de;
+char *tmpdir;
+struct stat ts;
+
+ dp = opendir(path);
+
+ if (!dp) {
+ fprintf(stderr, ERR_OPENING_DIR, path);
+ rc = -1;
+ } else {
+ readdir(dp); readdir(dp); /* skip . and .. */
+ while (( de = readdir(dp) )) {
+ tmpdir = (char *)malloc(strlen(path)+strlen(de->d_name)+2);
+ sprintf(tmpdir, "%s%s", path, de->d_name);
+ rc2 = stat(tmpdir, &ts); /* should check this return code */
+ if (rc2 != 0) {
+ perror(tmpdir);
+ } else {
+ if (S_ISDIR(ts.st_mode)) {
+ strcat(tmpdir, "/");
+ DisplayAll(tmpdir, ShowTableUtil);
+ } else {
+ rc |= ReadSetting(tmpdir+strlen(PROC_PATH));
+ } /* endif */
+ } /* endif */
+ free(tmpdir);
+ } /* end while */
+ closedir(dp);
+ } /* endif */
+
+return rc;
+} /* end DisplayAll() */
+
--- /dev/null
+.\" Copyright 1999, George Staikos (staikos@0wned.org)
+.\" This file may be used subject to the terms and conditions of the
+.\" GNU General Public License Version 2, or any later version
+.\" at your option, as published by the Free Software Foundation.
+.\" This program is distributed in the hope that it will be useful,
+.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
+.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+.\" GNU General Public License for more details."
+.TH SYSCTL.CONF 5 "21 Sep 1999" "" ""
+.SH NAME
+sysctl.conf \- sysctl(8) preload/configuration file
+.SH DESCRIPTION
+.I sysctl.conf
+is a simple file containing sysctl values to be read in and set by sysctl(8).
+The syntax is simply as follows:
+.RS
+.sp
+.nf
+.ne 7
+# comment
+; comment
+
+ token = value
+.fi
+.sp
+.RE
+.PP
+Note that blank lines are ignored, and whitespace before and after a token or
+value is ignored, although a value can contain whitespace within. Lines which
+begin with a # or ; are considered comments and ignored.
+.SH EXAMPLE
+.RS
+.sp
+.nf
+.ne 7
+# sysctl.conf sample
+#
+
+ kernel.domainname = example.com
+; this one has a space which will be written to the sysctl!
+ kernel.modprobe = /sbin/mod probe
+
+.fi
+.sp
+.RE
+.PP
+.SH SEE ALSO
+.BR sysctl(8)
+.SH AUTHOR
+George Staikos, <staikos@0wned.org>
+
--- /dev/null
+#!/bin/sh
+#
+# Wow, using $* causes great pain with embedded spaces in arguments.
+# The "$@" won't break that into 2 arguments.
+#
+LD_PRELOAD=proc/libproc.so exec ./top "$@"
--- /dev/null
+.\" -*-Nroff-*-
+.\" This page Copyright (C) 1993 Matt Welsh, mdw@tc.cornell.edu.
+.\" Freely distributable under the terms of the GPL
+.TH TLOAD 1 "20 Mar 1993 " "Cohesive Systems" "Linux User's Manual"
+.SH NAME
+tload \- graphic representation of system load average
+.SH SYNOPSIS
+.B tload
+.RB [ "\-V" "] [" "\-s"
+.IR scale "] ["
+.BI "\-d" " delay"
+.RI "] [" tty ]
+.SH DESCRIPTION
+\fBtload\fP prints a graph of the current system load average to the
+specified \fItty\fP (or the tty of the tload process if none is specified).
+.SS Options
+The
+.BI "\-s" " scale"
+option allows a vertical scale to be specified for the
+display (in characters between graph ticks); thus, a smaller value
+represents a larger scale, and vice versa.
+
+The
+.BI "\-d" " delay"
+sets the delay between graph updates in seconds.
+.PP
+.SH FILES
+.I /proc/loadavg
+load average information
+
+.SH "SEE ALSO"
+.BR ps (1),
+.BR top (1),
+.BR uptime (1),
+.BR w (1)
+
+.SH BUGS
+The
+.BI "\-d" " delay"
+option sets the time argument for an
+.BR alarm (2);
+if -d 0 is specified, the alarm is set to 0, which will never send the
+.B SIGALRM
+and update the display.
+
+.SH AUTHORS
+Branko Lankester, David Engel <david@ods.com>, and
+Michael K. Johnson <johnsonm@redhat.com>.
+
+Please send bug reports to <acahalan@cs.uml.edu>
--- /dev/null
+/*
+ * tload.c - terminal version of xload
+ *
+ * Options:
+ * -s initial scaling exponent (default = 6)
+ * -d delay
+ *
+ * Copyright (c) 1992 Branko Lankester
+ * /proc changes by David Engel (david@ods.com)
+ * Made a little more efficient by Michael K. Johnson (johnsonm@sunsite.unc.edu)
+ */
+#include "proc/version.h"
+#include "proc/sysinfo.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <string.h>
+#include <unistd.h>
+#include <termios.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+
+static char *screen;
+
+static int nrows = 25;
+static int ncols = 80;
+static int scr_size;
+static int fd=1;
+static int dly=5;
+static jmp_buf jb;
+
+extern int optind;
+extern char *optarg;
+
+static void alrm(int signo)
+{
+ (void)signo;
+ signal(SIGALRM, alrm);
+ alarm(dly);
+}
+
+static void setsize(int i)
+{
+ struct winsize win;
+
+ signal(SIGWINCH, setsize);
+ if (ioctl(fd, TIOCGWINSZ, &win) != -1) {
+ if (win.ws_col > 0)
+ ncols = win.ws_col;
+ if (win.ws_row > 0)
+ nrows = win.ws_row;
+ }
+ scr_size = nrows * ncols;
+ if (screen == NULL)
+ screen = (char *) malloc(scr_size);
+ else
+ screen = (char *) realloc(screen, scr_size);
+
+ if (screen == NULL) {
+ perror("");
+ exit(1);
+ }
+ memset(screen, ' ', scr_size-1);
+ *(screen + scr_size - 2) = '\0';
+ if (i)
+ longjmp(jb, 0);
+}
+
+int main(int argc, char **argv)
+{
+ int lines, row, col=0;
+ int i, opt;
+ double av[3];
+ static double max_scale, scale_fact;
+ char *scale_arg = NULL;
+
+ while ((opt = getopt(argc, argv, "s:d:V")) != -1)
+ switch (opt) {
+ case 's': scale_arg = optarg; break;
+ case 'd': dly = atoi(optarg); break;
+ case 'V': display_version(); exit(0); break;
+ default:
+ printf("usage: tload [-V] [-d delay] [-s scale] [tty]\n");
+ exit(1);
+ }
+
+ if (argc > optind) {
+ if ((fd = open(argv[optind], 1)) == -1) {
+ perror(argv[optind]);
+ exit(1);
+ }
+ }
+
+ setsize(0);
+
+ if (scale_arg)
+ max_scale = atof(scale_arg);
+ else
+ max_scale = nrows;
+
+ scale_fact = max_scale;
+
+ setjmp(jb);
+ col = 0;
+ alrm(0);
+
+ while (1) {
+
+ if (scale_fact < max_scale)
+ scale_fact *= 2.0; /* help it drift back up. */
+
+ loadavg(&av[0], &av[1], &av[2]);
+
+ repeat:
+ lines = av[0] * scale_fact;
+ row = nrows-1;
+
+ while (--lines >= 0) {
+ *(screen + row * ncols + col) = '*';
+ if (--row < 0) {
+ scale_fact /= 2.0;
+ goto repeat;
+ }
+ }
+ while (row >= 0)
+ *(screen + row-- * ncols + col) = ' ';
+
+ for (i = 1; ; ++i) {
+ char *p;
+ row = nrows - (i * scale_fact);
+ if (row < 0)
+ break;
+ if (*(p = screen + row * ncols + col) == ' ')
+ *p = '-';
+ else
+ *p = '=';
+ }
+
+ if (++col == ncols) {
+ --col;
+ memmove(screen, screen + 1, scr_size-1);
+
+ for(row = nrows-2; row >= 0; --row)
+ *(screen + row * ncols + col) = ' ';
+ }
+ i = sprintf(screen, " %.2f, %.2f, %.2f",
+ av[0], av[1], av[2]);
+ if (i>0)
+ screen[i] = ' ';
+
+ write(fd, "\033[H", 3);
+ write(fd, screen, scr_size - 1);
+ pause();
+ }
+}
--- /dev/null
+/*
+ * w.c v1.4
+ *
+ * An alternative "w" program for Linux.
+ * Shows users and their processes.
+ *
+ * Copyright (c) Dec 1993, Oct 1994 Steve "Mr. Bassman" Bryant
+ * bassman@hpbbi30.bbn.hp.com (Old address)
+ * bassman@muttley.soc.staffs.ac.uk
+ *
+ * Info:
+ * I starting writing as an improvement of the w program included
+ * with linux. The idea was to add in some extra functionality to the
+ * program, and see if I could fix a couple of bugs which seemed to
+ * occur.
+ * Mr. Bassman, 10/94
+ *
+ * Acknowledgments:
+ *
+ * The original version of w:
+ * Copyright (c) 1993 Larry Greenfield (greenfie@gauss.rutgers.edu)
+ *
+ * Uptime routine and w mods:
+ * Michael K. Johnson (johnsonm@stolaf.edu)
+ *
+ *
+ * Distribution:
+ * This program is freely distributable under the terms of copyleft.
+ * No warranty, no support, use at your own risk etc.
+ *
+ * Compilation:
+ * gcc -O -o w sysinfo.c whattime.c w.c
+ *
+ * Usage:
+ * w [-hfusd] [user]
+ *
+ *
+ * $Log: tmp-junk.c,v $
+ * Revision 1.1 2002/02/01 22:46:37 csmall
+ * Initial revision
+ *
+ * Revision 1.5 1994/10/26 17:57:35 bassman
+ * Loads of stuff - see comments.
+ *
+ * Revision 1.4 1994/01/01 12:57:21 johnsonm
+ * Added RCS, and some other fixes.
+ *
+ * Revision history:
+ * Jan 01, 1994 (mkj): Eliminated GCC warnings, took out unnecessary
+ * dead variables in fscanf, replacing them with
+ * *'d format qualifiers. Also added RCS stuff.
+ * Oct 26, 1994 (bass): Tidied up the code, fixed bug involving corrupt
+ * utmp records. Added switch for From field;
+ * default is compile-time set. Added -d option
+ * as a remnant from BSD 'w'. Fixed bug so it now
+ * behaves if the first process on a tty isn't owned
+ * by the person first logged in on that tty, and
+ * also detects su'd users. Changed the tty format
+ * to the short one.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <time.h>
+#include <utmp.h>
+#include <unistd.h>
+#include <errno.h>
+#include <pwd.h>
+#include "proc/whattime.h"
+
+
+#define TRUE 1
+#define FALSE 0
+/*
+ * Default setting for whether to have a From field. The -f switch
+ * toggles this - if the default is to have it, using -f will turn
+ * it off; if the default is not to have it, the -f switch will put
+ * it in. Possible values are TRUE (to have the field by default),
+ * and FALSE.
+ */
+#define DEFAULT_FROM TRUE
+#define ZOMBIE "<zombie>"
+
+
+void put_syntax();
+char *idletime();
+char *logintime();
+
+static char rcsid[]="$Id: tmp-junk.c,v 1.1 2002/02/01 22:46:37 csmall Exp $";
+
+
+void main (argc, argv)
+
+int argc;
+char *argv[];
+
+{
+ int header=TRUE, long_format=TRUE, ignore_user=TRUE,
+ from_switch=DEFAULT_FROM, show_pid=FALSE, line_length;
+ int i, j;
+ struct utmp *utmp_rec;
+ struct stat stat_rec;
+ struct passwd *passwd_entry;
+ uid_t uid;
+ char username[9], tty[13], rhost[17], login_time[27];
+ char idle_time[7], what[1024], pid[10];
+ char out_line[1024], file_name[256];
+ char search_name[9];
+ int jcpu, pcpu, tpgid, curr_pid, utime, stime, cutime, cstime;
+ char /*ch,*/ state, comm[1024], *columns_ptr;
+ FILE *fp;
+
+
+ search_name[0] = '\0';
+
+
+ /*
+ * Process the command line
+ */
+ if (argc > 1)
+ {
+ /*
+ * Args that start with '-'
+ */
+ for (i = 1; ((i < argc) && (argv[i][0] == '-')); i ++)
+ {
+ for (j = 1; argv[i][j] != '\0'; j++)
+ {
+ switch (argv[i][j])
+ {
+ case 'h':
+ header = FALSE;
+ break;
+ case 's':
+ long_format = FALSE;
+ break;
+ case 'u':
+ ignore_user = FALSE;
+ break;
+ case 'd':
+ show_pid = TRUE;
+ break;
+ case 'f':
+ if (DEFAULT_FROM == TRUE)
+ from_switch = FALSE;
+ else
+ from_switch = TRUE;
+ break;
+ default:
+ fprintf (stderr, "w: unknown option: '%c'\n",
+ argv[i][j]);
+ put_syntax ();
+ break;
+ }
+ }
+ }
+
+
+ /*
+ * Check for arg not starting with '-' (ie: username)
+ */
+ if (argc > i)
+ {
+ strncpy (search_name, argv[i], 8);
+ search_name[8] = '\0';
+ i ++;
+
+ if (argc > i)
+ {
+ fprintf (stderr, "w: syntax error\n");
+ put_syntax ();
+ }
+ }
+ }
+
+
+
+ /*
+ * Check that /proc is actually there, or else we can't
+ * get all the information.
+ */
+ if (chdir ("/proc"))
+ {
+ fprintf (stderr, "w: fatal error: cannot access /proc\n");
+ perror (strerror(errno));
+ exit (-1);
+ }
+
+
+
+ /*
+ * Find out our screen width from $COLUMNS
+ */
+ columns_ptr = getenv ("COLUMNS");
+ if (columns_ptr == NULL)
+ {
+ struct winsize window;
+
+ /*
+ * Try getting it directly
+ */
+ if ((ioctl (1, TIOCGWINSZ, &window) != 1) && (window.ws_col > 0))
+ line_length = window.ws_col;
+ else
+ line_length = 80; /* Default length assumed */
+ }
+ else
+ line_length = atoi (columns_ptr);
+
+ /*
+ * Maybe we should check whether there is enough space on
+ * the lines for the options selected...
+ */
+ if (line_length < 60)
+ long_format = FALSE;
+
+ line_length --;
+
+
+ /*
+ * Print whatever headers
+ */
+ if (header == TRUE)
+ {
+ /*
+ * uptime: from MKJ's uptime routine,
+ * found in whattime.c
+ */
+ print_uptime();
+
+
+ /*
+ * Print relevant header bits
+ */
+ printf ("User tty ");
+
+ if (long_format == TRUE)
+ {
+ if (from_switch == TRUE)
+ printf ("From ");
+
+ printf (" login@ idle JCPU PCPU ");
+
+ if (show_pid == TRUE)
+ printf (" PID ");
+
+ printf ("what\n");
+ }
+ else
+ {
+ printf (" idle ");
+
+ if (show_pid == TRUE)
+ printf (" PID ");
+
+ printf ("what\n");
+ }
+ }
+
+
+
+
+ /*
+ * Process user information.
+ */
+ while ((utmp_rec = getutent()))
+ {
+ /*
+ * Check we actually want to see this record.
+ * It must be a valid active user process,
+ * and match a specified search name.
+ */
+ if ( (utmp_rec->ut_type == USER_PROCESS)
+ && (strcmp(utmp_rec->ut_user, ""))
+ && ( (search_name[0] == '\0')
+ || ( (search_name[0] != '\0')
+ && !strncmp(search_name, utmp_rec->ut_user, 8) ) ) )
+ {
+ /*
+ * Get the username
+ */
+ strncpy (username, utmp_rec->ut_user, 8);
+ username[8] = '\0'; /* Set end terminator */
+
+
+ /*
+ * Find out the uid of that user (from their
+ * passwd entry)
+ */
+ uid = -1;
+ if ((passwd_entry = getpwnam (username)) != NULL)
+ {
+ uid = passwd_entry->pw_uid;
+ }
+
+ /*
+ * Get (and clean up) the tty line
+ */
+ for (i = 0; (utmp_rec->ut_line[i] > 32) && (i < 6); i ++)
+ tty[i] = utmp_rec->ut_line[i];
+
+ utmp_rec->ut_line[i] = '\0';
+ tty[i] = '\0';
+
+
+ /*
+ * Don't bother getting info if it's not asked for
+ */
+ if (long_format == TRUE)
+ {
+
+ /*
+ * Get the remote hostname; this can be up to 16 chars,
+ * but if any chars are invalid (ie: [^a-zA-Z0-9\.])
+ * then the char is changed to a string terminator.
+ */
+ if (from_switch == TRUE)
+ {
+ strncpy (rhost, utmp_rec->ut_host, 16);
+ rhost[16] = '\0';
+
+ }
+
+
+ /*
+ * Get the login time
+ * (Calculated by LG's routine, below)
+ */
+ strcpy (login_time, logintime(utmp_rec->ut_time));
+ }
+
+
+
+ /*
+ * Get the idle time.
+ * (Calculated by LG's routine, below)
+ */
+ strcpy (idle_time, idletime (tty));
+
+
+
+ /*
+ * That's all the info out of /etc/utmp.
+ * The rest is more difficult. We use the pid from
+ * utmp_rec->ut_pid to look in /proc for the info.
+ * NOTE: This is not necessarily the active pid, so we chase
+ * down the path of parent -> child pids until we find it,
+ * according to the information given in /proc/<pid>/stat.
+ */
+
+ sprintf (pid, "%d", utmp_rec->ut_pid);
+
+ what[0] = '\0';
+ strcpy (file_name, pid);
+ strcat (file_name, "/stat");
+ jcpu = 0;
+ pcpu = 0;
+
+ if ((fp = fopen(file_name, "r")))
+ {
+ while (what[0] == '\0')
+ {
+ /*
+ * Check /proc/<pid>/stat to see if the process
+ * controlling the tty is the current one
+ */
+ fscanf (fp, "%d %s %c %*d %*d %*d %*d %d "
+ "%*u %*u %*u %*u %*u %d %d %d %d",
+ &curr_pid, comm, &state, &tpgid,
+ &utime, &stime, &cutime, &cstime);
+
+ fclose (fp);
+
+ if (comm[0] == '\0')
+ strcpy (comm, "-");
+
+ /*
+ * Calculate jcpu and pcpu.
+ * JCPU is the time used by all processes and their
+ * children, attached to the tty.
+ * PCPU is the time used by the current process
+ * (calculated once after the loop, using last
+ * obtained values).
+ */
+ if (!jcpu)
+ jcpu = cutime + cstime;
+
+ /*
+ * Check for a zombie first...
+ */
+ if (state == 'Z')
+ strcpy (what, ZOMBIE);
+ else if (curr_pid == tpgid)
+ {
+ /*
+ * If it is the current process, read cmdline
+ * If that's empty, then the process is swapped out,
+ * or is a zombie, so we use the command given in stat
+ * which is in normal round brackets, ie: "()".
+ */
+ strcpy (file_name, pid);
+ strcat (file_name, "/cmdline");
+ if ((fp = fopen(file_name, "r")))
+ {
+ i = 0;
+ j = fgetc (fp);
+ while ((j != EOF) && (i < 256))
+ {
+ if (j == '\0')
+ j = ' ';
+
+ what[i] = j;
+ i++;
+ j = fgetc (fp);
+ }
+ what[i] = '\0';
+ fclose (fp);
+ }
+
+ if (what[0] == '\0')
+ strcpy (what, comm);
+ }
+ else
+ {
+ /*
+ * Check out the next process
+ * If we can't open it, use info from this process,
+ * so we have to check out cmdline first.
+ *
+ * If we're not using "-u" then should we just
+ * say "-" (or "-su") instead of a command line ?
+ * If so, we should strpcy(what, "-"); when we
+ * fclose() in the if after the stat() below.
+ */
+ strcpy (file_name, pid);
+ strcat (file_name, "/cmdline");
+
+ if ((fp = fopen (file_name, "r")))
+ {
+ i = 0;
+ j = fgetc (fp);
+ while ((j != EOF) && (i < 256))
+ {
+ if (j == '\0')
+ j = ' ';
+
+ what[i] = j;
+ i++;
+ j = fgetc (fp);
+ }
+ what[i] = '\0';
+ fclose (fp);
+ }
+
+ if (what[0] == '\0')
+ strcpy (what, comm);
+
+ /*
+ * Now we have something in the what variable,
+ * in case we can't open the next process.
+ */
+ sprintf (pid, "%d", tpgid);
+ strcpy (file_name, pid);
+ strcat (file_name, "/stat");
+
+ fp = fopen (file_name, "r");
+
+ if (fp && (ignore_user == FALSE))
+ {
+ /*
+ * We don't necessarily go onto the next process,
+ * unless we are either ignoring who the effective
+ * user is, or it's the same uid
+ */
+ stat (file_name, &stat_rec);
+
+ /*
+ * If the next process is not owned by this
+ * user finish the loop.
+ */
+ if (stat_rec.st_uid != uid)
+ {
+ fclose (fp);
+
+ strcpy (what, "-su");
+ /*
+ * See comment above somewhere; I've used
+ * "-su" here, as the next process is owned
+ * by someone else; this is generally
+ * because the user has done an "su" which
+ * then exec'd something else.
+ */
+ }
+ else
+ what[0] = '\0';
+ }
+ else if (fp) /* else we are ignoring uid's */
+ what[0] = '\0';
+ }
+ }
+ }
+ else /* Could not open first process for user */
+ strcpy (what, "?");
+
+
+ /*
+ * There is a bug somewhere in my version of linux
+ * which means that utmp records are not cleaned
+ * up properly when users log out. However, we
+ * can detect this, by the users first process
+ * not being there when we look in /proc.
+ */
+
+
+ /*
+ * Don't output a line for "dead" users.
+ * This gets round a bug which doesn't update utmp/wtmp
+ * when users log out.
+ */
+ if (what[0] != '?')
+ {
+#ifdef 0
+/* This makes unix98 pty's not line up, so has been disabled - JEH. */
+ /*
+ * Remove the letters 'tty' from the tty id
+ */
+ if (!strncmp (tty, "tty", 3))
+ {
+ for (i = 3; tty[i - 1] != '\0'; i ++)
+ tty[i - 3] = tty[i];
+ }
+#endif
+
+ /*
+ * Common fields
+ */
+ sprintf (out_line, "%-9.8s%-6.7s ", username, tty);
+
+
+ /*
+ * Format the line for output
+ */
+ if (long_format == TRUE)
+ {
+ /*
+ * Calculate CPU usage
+ */
+ pcpu = utime + stime;
+ jcpu /= 100;
+ pcpu /= 100;
+
+ if (from_switch == TRUE)
+ sprintf (out_line, "%s %-16.15s", out_line, rhost);
+
+ sprintf (out_line, "%s%8.8s ", out_line, login_time);
+
+ }
+
+ sprintf (out_line, "%s%6s", out_line, idle_time);
+
+
+ if (long_format == TRUE)
+ {
+ if (!jcpu)
+ strcat (out_line, " ");
+ else if (jcpu/60)
+ sprintf (out_line, "%s%3d:%02d", out_line,
+ jcpu/60, jcpu%60);
+ else
+ sprintf (out_line, "%s %2d", out_line, jcpu);
+
+ if (!pcpu)
+ strcat (out_line, " ");
+ else if (pcpu/60)
+ sprintf (out_line, "%s%3d:%02d", out_line,
+ pcpu/60, pcpu%60);
+ else
+ sprintf (out_line, "%s %2d", out_line, pcpu);
+ }
+
+ if (show_pid == TRUE)
+ sprintf (out_line, "%s %5.5s", out_line, pid);
+
+
+ strcat (out_line, " ");
+ strcat (out_line, what);
+
+
+ /*
+ * Try not to exceed the line length
+ */
+ out_line[line_length] = '\0';
+
+ printf ("%s\n", out_line);
+ }
+ }
+ }
+}
+
+
+
+/*
+ * put_syntax()
+ *
+ * Routine to print the correct syntax to call this program,
+ * and then exit out appropriately
+ */
+void put_syntax ()
+{
+ fprintf (stderr, "usage: w [-hfsud] [user]\n");
+ exit (-1);
+}
+
+
+
+/*
+ * idletime()
+ *
+ * Routine which returns a string containing
+ * the idle time of a given user.
+ *
+ * This routine was lifted from the original w program
+ * by Larry Greenfield (greenfie@gauss.rutgers.edu)
+ * Copyright (c) 1993 Larry Greenfield
+ *
+ */
+char *idletime (tty)
+
+char *tty;
+
+{
+ struct stat terminfo;
+ unsigned long idle;
+ char ttytmp[40];
+ static char give[20];
+ time_t curtime;
+
+ curtime = time (NULL);
+
+ sprintf (ttytmp, "/dev/%s", tty);
+ stat (ttytmp, &terminfo);
+ idle = (unsigned long) curtime - (unsigned long) terminfo.st_atime;
+
+ if (idle >= (60 * 60)) /* more than an hour */
+ {
+ if (idle >= (60 * 60 * 48)) /* more than two days */
+ sprintf (give, "%2ludays", idle / (60 * 60 * 24));
+ else
+ sprintf (give, " %2lu:%02u", idle / (60 * 60),
+ (unsigned) ((idle / 60) % 60));
+ }
+ else
+ {
+ if (idle / 60)
+ sprintf (give, "%6lu", idle / 60);
+ else
+ give[0]=0;
+ }
+
+ return give;
+}
+
+
+
+/*
+ * logintime()
+ *
+ * Returns the time given in a suitable format
+ *
+ * This routine was lifted from the original w program
+ * by Larry Greenfield (greenfie@gauss.rutgers.edu)
+ * Copyright (c) 1993 Larry Greenfield
+ *
+ */
+
+#undef ut_time
+
+char *logintime(ut_time)
+
+time_t ut_time;
+
+{
+ time_t curtime;
+ struct tm *logintime, *curtm;
+ int hour, am, curday, logday;
+ static char give[20];
+ static char *weekday[] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri",
+ "Sat" };
+ static char *month[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
+ "Aug", "Sep", "Oct", "Nov", "Dec" };
+
+ curtime = time(NULL);
+ curtm = localtime(&curtime);
+ curday = curtm->tm_yday;
+ logintime = localtime(&ut_time);
+ hour = logintime->tm_hour;
+ logday = logintime->tm_yday;
+ am = (hour < 12);
+
+ if (!am)
+ hour -= 12;
+
+ if (hour == 0)
+ hour = 12;
+
+ /*
+ * This is a newer behavior: it waits 12 hours and the next day, and then
+ * goes to the 2nd time format. This should reduce confusion.
+ * It then waits only 6 days (not till the last moment) to go the last
+ * time format.
+ */
+ if ((curtime > (ut_time + (60 * 60 * 12))) && (logday != curday))
+ {
+ if (curtime > (ut_time + (60 * 60 * 24 * 6)))
+ sprintf(give, "%2d%3s%2d", logintime->tm_mday,
+ month[logintime->tm_mon], (logintime->tm_year % 100));
+ else
+ sprintf(give, "%*s%2d%s", 3, weekday[logintime->tm_wday],
+ hour, am ? "am" : "pm");
+ }
+ else
+ sprintf(give, "%2d:%02d%s", hour, logintime->tm_min, am ? "am" : "pm");
+
+ return give;
+}
+
--- /dev/null
+.\" This file Copyright 1992 Robert J. Nation
+.\" (nation@rocket.sanders.lockheed.com)
+.\" It may be distributed under the GNU Public License, version 2, or
+.\" any higher version. See section COPYING of the GNU Public license
+.\" for conditions under which this file may be redistributed.
+.\"
+.\" Modified 1994/04/25 Michael Shields <mjshield@nyx.cs.du.edu>
+.\" Cleaned up, and my changes documented. New `.It' macro. Edited.
+.\" modified 1996/01/27 Helmut Geyer to match my changes.
+.
+.de It
+.TP 0.5i
+.B "\\$1 "
+..
+.TH TOP 1 "Feb 1 1993" "Linux" "Linux User's Manual"
+.SH NAME
+top \- display top CPU processes
+.SH SYNOPSIS
+.B top
+.RB [ \- ]
+.RB [ d
+.IR delay ]
+.RB [ p
+.IR pid ]
+.RB [ q ]
+.RB [ c ]
+.RB [ C ]
+.RB [ S ]
+.RB [ s ]
+.RB [ i ]
+.RB [ n
+.IR iter ]
+.RB [ b ]
+.SH DESCRIPTION
+.B top
+provides an ongoing look at processor activity in real time. It
+displays a listing of the most CPU-intensive tasks on the system, and
+can provide an interactive interface for manipulating processes.
+It can sort the tasks by CPU usage, memory usage and runtime.
+.N top
+can be better configured than the standard top from the procps suite.
+Most features can either be selected by an interactive command or by
+specifying the feature in the personal or system-wide configuration
+file. See below for more information.
+.PP
+.SH "COMMAND\-LINE OPTIONS"
+.It d
+Specifies the delay between screen updates. You can change this with
+the
+.B s
+interactive command.
+.It p
+Monitor only processes with given process id.
+This flag can be given up to twenty times. This option is neither
+available interactively nor can it be put into the configuration file.
+.It q
+This causes
+.B top
+to refresh without any delay. If the caller has superuser priviledges,
+top runs with the highest possible priority.
+.It S
+Specifies cumulative mode, where each process is listed with the CPU
+time that it
+.I as well as its dead children
+has spent. This is like the
+.B -S
+flag to
+.BR ps (1).
+See the discussion below of the
+.B S
+interactive command.
+.It s
+Tells
+.B top
+to run in secure mode. This disables the potentially dangerous of the
+interactive commands (see below). A secure
+.B top
+is a nifty thing to leave running on a spare terminal.
+.It i
+Start
+.B top
+ignoring any idle or zombie processes. See the interactive command
+.B i
+below.
+.It C
+display total CPU states in addition to individual CPUs. This option
+only affects SMP systems.
+.It c
+display command line instead of the command name only. The default
+behaviour has been changed as this seems to be more useful.
+.It n
+Number of iterations. Update the display this number of times and then exit.
+.It b
+Batch mode. Useful for sending output from top to other programs or to a file.
+In this mode,
+.B top
+will not accept command line input. It runs until it produces the number of
+iterations requested with the
+.B n
+option or until killed. Output is plain text suitable for display on a dumb
+terminal.
+.
+.SH "FIELD DESCRIPTIONS"
+.B top
+displays a variety of information about the processor state. The
+display is updated every 5 seconds by default, but you can change that
+with the
+.B d
+command-line option or the
+.B s
+interactive command.
+.It "uptime"
+This line displays the time the system has been up, and the three load
+averages for the system. The load averages are the average number of
+process ready to run during the last 1, 5 and 15 minutes. This line is
+just like the output of
+.BR uptime (1).
+The uptime display may be toggled by the interactive
+.B l
+command.
+.It processes
+The total number of processes running at the time of the last update.
+This is also broken down into the number of tasks which are running,
+sleeping, stopped, or undead. The processes and states display may be
+toggled by the
+.B t
+interactive command.
+.It "CPU states"
+Shows the percentage of CPU time in user mode, system mode, niced tasks,
+and idle. (Niced tasks are only those whose nice value is negative.)
+Time spent in niced tasks will also be counted in system and user time,
+so the total will be more than 100%. The processes and states display
+may be
+toggled by the
+.B t
+interactive command.
+.It Mem
+Statistics on memory usage, including total available memory, free
+memory, used memory, shared memory, and memory used for buffers. The
+display of memory information may be toggled by the
+.B m
+interactive command.
+.It Swap
+Statistics on swap space, including total swap space, available swap
+space, and used swap space. This and
+.B Mem
+are just like the output of
+.BR free (1).
+.It PID
+The process ID of each task.
+.It PPID
+The parent process ID each task.
+.It UID
+The user ID of the task's owner.
+.It USER
+The user name of the task's owner.
+.It PRI
+The priority of the task.
+.It NI
+The nice value of the task. Negative nice values are higher priority.
+.It SIZE
+The size of the task's code plus data plus stack space, in kilobytes,
+is shown here.
+.It TSIZE
+The code size of the task. This gives strange values for kernel
+processes and is broken for ELF processes.
+.It DSIZE
+Data + Stack size. This is broken for ELF processes.
+.It TRS
+Text resident size.
+.It SWAP
+Size of the swapped out part of the task.
+.It D
+Size of pages marked dirty.
+.It LC
+Last used processor. (That this changes from time to time is not
+a bug; Linux intentionally uses weak affinity. Also notice that
+the very act of running top may break weak affinity and cause more
+processes to change current CPU more often because of the extra
+demand for CPU time.)
+.It RSS
+The total amount of physical memory used by the task, in kilobytes, is
+shown here. For ELF processes used library pages are counted here, for
+a.out processes not.
+.It SHARE
+The amount of shared memory used by the task is shown in this column.
+.It STAT
+The state of the task is shown here. The state is either
+.B S
+for sleeping,
+.B D
+for uninterruptible sleep,
+.B R
+for running,
+.B Z
+for zombies, or
+.B T
+for stopped or traced. These states are modified by trailing
+.B <
+for a process with negative nice value,
+.B N
+for a process with positive nice value,
+.B W
+for a swapped out process (this does not work correctly for kernel
+processes).
+.It WCHAN
+depending on the availablity of either
+.I /boot/psdatabase
+or the kernel link map
+.I /boot/System.map
+this shows the address or the name of the kernel function the task
+currently is sleeping in.
+.It TIME
+Total CPU time the task has used since it started. If cumulative mode
+is on, this also includes the CPU time used by the process's children
+which have died. You can set cumulative mode with the
+.B S
+command line option or toggle it with the interactive command
+.BR S .
+The header line will then be changed to
+.BR CTIME .
+.It %CPU
+The task's share of the CPU time since the last screen update, expressed
+as a percentage of total CPU time per processor.
+.It %MEM
+The task's share of the physical memory.
+.It COMMAND
+The task's command name, which will be truncated if it is too long to be
+displayed on one line. Tasks in memory will have a full command line,
+but swapped-out tasks will only have the name of the program in
+parentheses (for example, "(getty)").
+.It "A , WP"
+these fields from the kmem top are not supported.
+.
+.SH "INTERACTIVE COMMANDS"
+Several single-key commands are recognized while
+.B top
+is running. Some are disabled if the
+.B s
+option has been given on the command line.
+.It space
+Immediately updates the display.
+.It ^L
+Erases and redraws the screen.
+.It "h\fR or \fB?"
+Displays a help screen giving a brief summary of commands, and the
+status of secure and cumulative modes.
+.It k
+Kill a process. You will be prompted for the PID of the task, and the
+signal to send to it. For a normal kill, send signal 15. For a sure,
+but rather abrupt, kill, send signal 9. The default signal, as with
+.BR kill (1),
+is 15,
+.BR SIGTERM .
+This command is not available in secure mode.
+.It i
+Ignore idle and zombie processes. This is a toggle switch.
+.It I
+Toggle between Solaris (CPU percentage divided by total number of CPUs)
+and Irix (CPU percentage calculated solely by amount of time) views.
+This is a toggle switch that affects only SMP systems.
+.It "n\fR or \fB#"
+Change the number of processes to show. You will be prompted to enter
+the number. This overrides automatic determination of the number of
+processes to show, which is based on window size measurement. If 0 is
+specified, then top will show as many processes as will fit on the
+screen; this is the default.
+.It q
+Quit.
+.It r
+Re-nice a process. You will be prompted for the PID of the task, and
+the value to nice it to. Entering a positve value will cause a process
+to be niced to negative values, and lose priority. If root is running
+.BR top ,
+a negative value can be entered, causing a process to get a higher than
+normal priority. The default renice value is 10. This command is not
+available in secure mode.
+.It S
+This toggles cumulative mode, the equivalent of
+.BR "ps -S" ,
+i.e., that CPU times will include a process's defunct children. For
+some programs, such as compilers, which work by forking into many
+seperate tasks, normal mode will make them appear less demanding than
+they actually are. For others, however, such as shells and
+.BR init ,
+this behavior is correct. In any case, try cumulative mode for an
+alternative view of CPU use.
+.It s
+Change the delay between updates. You will be prompted to enter the
+delay time, in seconds, between updates. Fractional values are
+recognized down to microseconds. Entering 0 causes continuous updates.
+The default value is 5 seconds. Note that low values cause nearly
+unreadably fast displays, and greatly raise the load. This command is
+not available in secure mode.
+.It "f\fR or \fBF"
+Add fields to display or remove fields from the display. See below for
+more information.
+.It "o\fR or \fBO"
+Change order of displayed fields. See below for more information.
+.It l
+toggle display of load average and uptime information.
+.It m
+toggle display of memory information.
+.It t
+toggle display of processes and CPU states information.
+.It c
+toggle display of command name or full command line.
+.It N
+sort tasks by pid (\fIn\fPumerically).
+.It A
+sort tasks by age (newest first).
+.It P
+sort tasks by CPU usage (default).
+.It M
+sort tasks by resident memory usage.
+.It T
+sort tasks by time / cumulative time.
+.It W
+Write current setup to
+.IR ~/.toprc .
+This is the recommended way to write a top configuration file.
+.
+.SH The Field and Order Screens
+After pressing
+.BR f ,
+.BR F ,
+.B o
+or
+.B O
+you will be shown a screen specifying the field order on the top line
+and short descriptions of the field contents. The field order string
+uses the following syntax: If the letter in the filed string
+corresponding to a field is upper case, the field will be displayed.
+This is furthermore indicated by an asterisk in front of the field
+description.
+The order of the fields corresponds to the order of the letters in the
+string.
+ From the field select screen you can toggle the display of a field by
+pressing the corresponding letter.
+ From the order screen you may move a field to the left by pressing
+the corresponding upper case letter resp. to the right by pressing the
+lower case one.
+.
+.SH Configuration Files
+Top reads it's default configuration from two files,
+.I /etc/toprc
+and
+.IR ~/.toprc .
+The global configuration file may be used to restrict the usage of top
+to the secure mode for non-priviledged users. If this is desired, the
+file should contain a 's' to specify secure mode and a digit d (2<=d<=9)
+for the default delay (in seconds) on a single line.
+.
+The personal configuration file contains two lines. The first line
+contains lower and upper letters to specify which fields in what
+order are to be displayed. The letters correspond to the letters in the
+Fields or Order screens from top. As this is not very instructive, it is
+recommended to select fields and order in a running top process and to
+save this using the
+.I W
+interactive command.
+.
+The second line is more interesting (and important). It contains
+information on the other options. Most important, if you have saved a
+configuration in secure mode, you will not get an insecure top without
+removing the lower 's' from the second line of your
+.IR ~/.toprc .
+A digit specifies the delay time between updates, a capital 'S'
+cumulative mode, a lower 'i' no-idle mode, a capital 'I' Irix view. As
+in interactive mode, a lower 'm', 'l', and 't' suppresses the display
+of memory, uptime resp. process and CPU state information.
+Currently changing the default sorting order (by CPU usage) is not
+supported.
+.
+.SH NOTES
+This
+.BR proc -based
+.B top
+works by reading the files in the
+.B proc
+filesystem,
+mounted on
+.IR /proc .
+If
+.I /proc
+is not mounted,
+.B top
+will not work.
+.PP
+.B %CPU
+shows the cputime/realtime percentage in the period of time between
+updates. For the first update, a short delay is used, and
+.B top
+itself dominates the CPU usage. After that,
+.B top
+will drop back, and a more reliable estimate of CPU usage is available.
+.PP
+The
+.B SIZE
+and
+.B RSS fields don't count the page tables and the
+.B task_struct
+of a process; this is at least 12K of memory that is always resident.
+.B SIZE
+is the virtual size of the process (code+data+stack).
+.PP
+Keep in mind that a process must die for its time to be recorded on its
+parent by cumulative mode. Perhaps more useful behavior would be to
+follow each process upwards, adding time, but that would be more
+expensive, possibly prohibitively so. In any case, that would make
+.BR top 's
+behavior incompatible with
+.BR ps .
+.
+.SH FILES
+.I /etc/toprc
+The global configuration file.
+.I ~/.toprc
+The personal configuration file.
+.
+.SH "SEE ALSO"
+.BR ps (1),
+.BR free (1),
+.BR uptime (1),
+.BR kill (1),
+.BR renice (1).
+.
+.SH
+BUGS
+If the window is less than about 70x7,
+.B top
+will not format information correctly.
+ Many fields still have problems with ELF processes.
+ the help screens are not yet optimized for windows with less than
+25 lines
+.
+.SH AUTHOR
+.B top
+was originally written by Roger Binns, based on Branko Lankester's
+<lankeste@fwi.uva.nl> ps program.
+Robert Nation <nation@rocket.sanders.lockheed.com> re-wrote it
+significantly to use the proc filesystem, based on Michael K. Johnson's
+<johnsonm@redhat.com> proc-based ps program.
+Michael Shields <mjshield@nyx.cs.du.edu> made many changes, including
+secure and cumulative modes and a general cleanup.
+Tim Janik <timj@gtk.org> added age sorting and the ability to monitor
+specific processes through their ids.
+
+Helmut Geyer <Helmut.Geyer@iwr.uni-heidelberg.de>
+Heavily changed it to include support for configurable fields and other
+new options, and did further cleanup and use of the new readproc interface.
+
+The "b" and "n" options contributed by George Bonser <george@captech.com>
+for CapTech IT Services.
+
+Please send bug reports to <acahalan@cs.uml.edu>
--- /dev/null
+/*
+ * top.c - show top CPU processes
+ *
+ * Copyright (c) 1992 Branko Lankester
+ * Copyright (c) 1992 Roger Binns
+ * Copyright (c) 1997 Michael K. Johnson
+ *
+ * Snarfed and HEAVILY modified in december 1992 for procps
+ * by Michael K. Johnson, johnsonm@sunsite.unc.edu.
+ *
+ * Modified Michael K. Johnson's ps to make it a top program.
+ * Also borrowed elements of Roger Binns kmem based top program.
+ * Changes made by Robert J. Nation (nation@rocket.sanders.lockheed.com)
+ * 1/93
+ *
+ * Modified by Michael K. Johnson to be more efficient in cpu use
+ * 2/21/93
+ *
+ * Changed top line to use uptime for the load average. Also
+ * added SIGTSTP handling. J. Cowley, 19 Mar 1993.
+ *
+ * Modified quite a bit by Michael Shields (mjshield@nyx.cs.du.edu)
+ * 1994/04/02. Secure mode added. "d" option added. Argument parsing
+ * improved. Switched order of tick display to user, system, nice, idle,
+ * because it makes more sense that way. Style regularized (to K&R,
+ * more or less). Cleaned up much throughout. Added cumulative mode.
+ * Help screen improved.
+ *
+ * Fixed kill buglet brought to my attention by Rob Hooft.
+ * Problem was mixing of stdio and read()/write(). Added
+ * getnum() to solve problem.
+ * 12/30/93 Michael K. Johnson
+ *
+ * Added toggling output of idle processes via 'i' key.
+ * 3/29/94 Gregory K. Nickonov
+ *
+ * Fixed buglet where rawmode wasn't getting restored.
+ * Added defaults for signal to send and nice value to use.
+ * 5/4/94 Jon Tombs.
+ *
+ * Modified 1994/04/25 Michael Shields <mjshield@nyx.cs.du.edu>
+ * Merged previous changes to 0.8 into 0.95.
+ * Allowed the use of symbolic names (e.g., "HUP") for signal input.
+ * Rewrote getnum() into getstr(), getint(), getsig(), etc.
+ *
+ * Modified 1995 Helmut Geyer <Helmut.Geyer@iwr.uni-heidelberg.de>
+ * added kmem top functionality (configurable fields)
+ * configurable order of process display
+ * Added options for dis/enabling uptime, statistics, and memory info.
+ * fixed minor bugs for ELF systems (e.g. SIZE, RSS fields)
+ *
+ * Modified 1996/05/18 Helmut Geyer <Helmut.Geyer@iwr.uni-heidelberg.de>
+ * Use of new interface and general cleanup. The code should be far more
+ * readable than before.
+ *
+ * Modified 1996/06/25 Zygo Blaxell <zblaxell@ultratech.net>
+ * Added field scaling code for programs that run more than two hours or
+ * take up more than 100 megs. We have lots of both on our production line.
+ *
+ * Modified 1998/02/21 Kirk Bauer <kirk@kaybee.org>
+ * Added the 'u' option to display only a selected user... plus it will
+ * take into account that not all 20 top processes are actually shown,
+ * so it can fit more onto the screen. I think this may help the
+ * 'don't show idle' mode, but I'm not sure.
+ *
+ * Modified 1997/07/27 & 1999/01/27 Tim Janik <timj@gtk.org>
+ * added `-p' option to display specific process ids.
+ * process sorting is by default disabled in this case.
+ * added `N' and `A' keys to sort the tasks Numerically by pid or
+ * sort them by Age (newest first).
+ *
+ * Modified 1999/10/22 Tim Janik <timj@gtk.org>
+ * miscellaneous minor fixes, including "usage: ..." output for
+ * unrecognized options.
+ *
+ * Modified 2000/02/07 Jakub Jelinek <jakub@redhat.com>
+ * Only load System.map when we are going to display WCHAN.
+ * Show possible error messages from that load using SHOWMESSAGE.
+ *
+ * Modified 2000/07/10 Michael K. Johnson <johnsonm@redhat.com>
+ * Integrated a patch to display SMP information.
+ */
+
+#include <errno.h>
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <libintl.h>
+#include <time.h>
+#include <sys/ioctl.h>
+#include <pwd.h>
+#include <termcap.h>
+#include <termios.h>
+#include <signal.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <ctype.h>
+#include <setjmp.h>
+#include <stdarg.h>
+#include <sys/param.h>
+
+#include "proc/sysinfo.h"
+#include "proc/procps.h"
+#include "proc/whattime.h"
+#include "proc/sig.h"
+#include "proc/version.h"
+#include "proc/readproc.h"
+#include "proc/status.h"
+#include "proc/devname.h"
+#include "proc/compare.h"
+
+#define PUTP(x) (tputs(x,1,putchar))
+#define BAD_INPUT -30
+
+#include "top.h" /* new header for top specific things */
+
+static int *cpu_mapping;
+static int nr_cpu;
+
+/*#######################################################################
+ *#### Startup routines: parse_options, get_options, ##############
+ *#### setup_terminal and main ##############
+ *#######################################################################
+ */
+
+ /*
+ * parse the options string as read from the config file(s).
+ * if top is in secure mode, disallow changing of the delay time between
+ * screen updates.
+ */
+static void parse_options(char *Options, int secure)
+{
+ int i;
+ for (i = 0; i < strlen(Options); i++) {
+ switch (Options[i]) {
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ if (!secure)
+ Sleeptime = (float) Options[i] - '0';
+ break;
+ case 'S':
+ Cumulative = 1;
+ headers[22][1] = 'C';
+ break;
+ case 's':
+ Secure = 1;
+ break;
+ case 'i':
+ Noidle = 1;
+ break;
+ case 'm':
+ show_memory = 0;
+ header_lines -= 2;
+ break;
+ case 'M':
+ sort_type = S_MEM;
+ reset_sort_options();
+ register_sort_function( -1, (cmp_t)mem_sort);
+ break;
+ case 'l':
+ show_loadav = 0;
+ header_lines -= 1;
+ break;
+ case 'P':
+ sort_type = S_PCPU;
+ reset_sort_options();
+ register_sort_function( -1, (cmp_t)pcpu_sort);
+ break;
+ case 'N':
+ sort_type = S_NONE;
+ reset_sort_options();
+ break;
+ case 'A':
+ sort_type = S_AGE;
+ reset_sort_options();
+ register_sort_function( -1, (cmp_t)age_sort);
+ break;
+ case 't':
+ show_stats = 0;
+ header_lines -= 2;
+ break;
+ case 'T':
+ sort_type = S_TIME;
+ reset_sort_options();
+ register_sort_function( -1, (cmp_t)time_sort);
+ break;
+ case 'c':
+ show_cmd = 0;
+ break;
+ case '\n':
+ break;
+ case 'I':
+ Irixmode = 0;
+ break;
+ default:
+ fprintf(stderr, "Wrong configuration option %c\n", i);
+ exit(1);
+ break;
+ }
+ }
+}
+
+/*
+ * Read the configuration file(s). There are two files, once SYS_TOPRC
+ * which should only contain the secure switch and a sleeptime
+ * value iff ordinary users are to use top in secure mode only.
+ *
+ * The other file is $HOME/RCFILE.
+ * The configuration file should contain two lines (any of which may be
+ * empty). The first line specifies the fields that are to be displayed
+ * in the order you want them to. Uppercase letters specify fields
+ * displayed by default, lowercase letters specify fields not shown by
+ * default. The order of the letters in this line corresponds to the
+ * order of the displayed fileds.
+ *
+ * all Options but 'q' can be read from this config file
+ * The delay time option syntax differs from the commandline syntax:
+ * only integer values between 2 and 9 seconds are recognized
+ * (this is for standard configuration, so I think this should do).
+ *
+ * usually this file is not edited by hand, but written from top using
+ * the 'W' command.
+ */
+
+static void get_options(void)
+{
+ FILE *fp;
+ char *pt;
+ char rcfile[MAXNAMELEN];
+ char Options[256] = "";
+ int i;
+
+ nr_cpu = sysconf (_SC_NPROCESSORS_ONLN);
+ cpu_mapping = (int *) xmalloc (sizeof (int) * nr_cpu);
+ /* read cpuname */
+ for (i=0; i< nr_cpu; i++) cpu_mapping[i]=i;
+ header_lines = 6 + nr_cpu;
+ strcpy(rcfile, SYS_TOPRC);
+ fp = fopen(rcfile, "r");
+ if (fp != NULL) {
+ fgets(Options, 254, fp);
+ fclose(fp);
+ }
+ parse_options(Options, 0);
+ strcpy(Options, "");
+ if (getenv("HOME")) {
+ strcpy(rcfile, getenv("HOME"));
+ strcat(rcfile, "/");
+ }
+ strcat(rcfile, RCFILE);
+ fp = fopen(rcfile, "r");
+ if (fp == NULL) {
+ strcpy(Fields, DEFAULT_SHOW);
+ } else {
+ if (fgets(Fields, 254, fp) != NULL) {
+ pt = strchr(Fields, '\n');
+ if (pt) *pt = 0;
+ }
+ fgets(Options, 254, fp);
+ fclose(fp);
+ }
+ parse_options(Options, getuid()? Secure : 0);
+}
+
+/*
+ * Set up the terminal attributes.
+ */
+static void setup_terminal(void)
+{
+ char *termtype;
+ struct termios newtty;
+ if (!Batch)
+ termtype = getenv("TERM");
+ else
+ termtype = "dumb";
+ if (!termtype) {
+ /* In theory, $TERM should never not be set, but in practice,
+ some gettys don't. Fortunately, vt100 is nearly always
+ correct (or pretty close). */
+ termtype = "VT100";
+ /* fprintf(stderr, PROGNAME ": $TERM not set\n"); */
+ /* exit(1); */
+ }
+
+ /*
+ * Get termcap entries and window size.
+ */
+ if(tgetent(NULL, termtype) != 1) {
+ fprintf(stderr, PROGNAME ": Unknown terminal \"%s\" in $TERM\n",
+ termtype);
+ exit(1);
+ }
+
+ cm = tgetstr("cm", 0);
+ top_clrtobot = tgetstr("cd", 0);
+ cl = tgetstr("cl", 0);
+ top_clrtoeol = tgetstr("ce", 0);
+ ho = tgetstr("ho", 0);
+ md = tgetstr("md", 0);
+ mr = tgetstr("mr", 0);
+ me = tgetstr("me", 0);
+
+
+ if (Batch) return; /* the rest doesn't apply to batch mode */
+ if (tcgetattr(0, &Savetty) == -1) {
+ perror(PROGNAME ": tcgetattr() failed");
+ error_end(errno);
+ }
+ newtty = Savetty;
+ newtty.c_lflag &= ~ICANON;
+ newtty.c_lflag &= ~ECHO;
+ newtty.c_cc[VMIN] = 1;
+ newtty.c_cc[VTIME] = 0;
+ if (tcsetattr(0, TCSAFLUSH, &newtty) == -1) {
+ printf("cannot put tty into raw mode\n");
+ error_end(1);
+ }
+ tcgetattr(0, &Rawtty);
+}
+
+static int parseint(const char *src, const char *err)
+{
+ char *endp;
+ int num;
+ int len;
+ num = strtol(src, &endp, 0);
+ if (*endp == '\0') return num;
+ /* also accept prefixes of: infinite, infinity, maximum, all */
+ len = strlen(src);
+ if(len<1) goto fail;
+ if(len<9 && !strncmp(src,"infinite",len)) return INT_MAX;
+ if(len<9 && !strncmp(src,"infinity",len)) return INT_MAX;
+ if(len<8 && !strncmp(src,"maximum" ,len)) return INT_MAX;
+ if(len<4 && !strncmp(src,"all" ,len)) return INT_MAX;
+fail:
+ fprintf(stderr, err, src);
+ exit(1);
+}
+
+static double parseflt(const char *src, const char *err)
+{
+ char *endp;
+ double num;
+ int len;
+ num = strtod(src, &endp);
+ if (*endp == '\0') return num;
+ /* also accept prefixes of: infinite, infinity, maximum, all */
+ len = strlen(src);
+ if(len<1) goto fail;
+ if(len<9 && !strncmp(src,"infinite",len)) return (double)INT_MAX;
+ if(len<9 && !strncmp(src,"infinity",len)) return (double)INT_MAX;
+ if(len<8 && !strncmp(src,"maximum" ,len)) return (double)INT_MAX;
+ if(len<4 && !strncmp(src,"all" ,len)) return (double)INT_MAX;
+fail:
+ fprintf(stderr, err, src);
+ exit(1);
+}
+
+int main(int argc, char **argv)
+{
+ /* For select(2). */
+ struct timeval tv;
+ fd_set in;
+ /* For parsing arguments. */
+ char *cp;
+ /* The key read in. */
+ char c;
+
+ struct sigaction sact;
+
+ setlocale(LC_ALL, "");
+ get_options();
+
+ /* set to PCPU sorting */
+ register_sort_function( -1, (cmp_t)pcpu_sort);
+
+ /*
+ * Parse arguments.
+ */
+ (void)argc;
+ argv++;
+ while (*argv) {
+ cp = *argv++;
+ while (*cp) {
+ switch (*cp) {
+ case 'd':
+ if (cp[1]) {
+ Sleeptime = parseflt(++cp, PROGNAME ": Bad delay time %s'\n");
+ goto breakargv;
+ } else if (*argv) { /* last char in an argv, use next as arg */
+ Sleeptime = parseflt(cp = *argv++, PROGNAME ": Bad delay time %s'\n");
+ goto breakargv;
+ } else {
+ fprintf(stderr, "-d requires an argument\n");
+ exit(1);
+ }
+ break;
+ case 'n':
+ if (cp[1]) {
+ Loops = parseint(++cp, PROGNAME ": Bad value %s'\n");
+ goto breakargv;
+ } else if (*argv) { /* last char in an argv, use next as arg */
+ Loops = parseint(cp = *argv++, PROGNAME ": Bad value %s'\n");
+ goto breakargv;
+ }
+ break;
+
+ case 'q':
+ if (!getuid())
+ /* set priority to -10 in order to stay above kswapd */
+ if (setpriority(PRIO_PROCESS, getpid(), -10)) {
+ /* We check this just for paranoia. It's not
+ fatal, and shouldn't happen. */
+ perror(PROGNAME ": setpriority() failed");
+ }
+ Sleeptime = 0;
+ break;
+ case 'p':
+ if (monpids_index >= monpids_max) {
+ fprintf(stderr, PROGNAME ": More than %u process ids specified\n",
+ monpids_max);
+ exit(1);
+ }
+ if (cp[1]) {
+ if (sscanf(++cp, "%d", &monpids[monpids_index]) != 1 ||
+ monpids[monpids_index] < 0 || monpids[monpids_index] > 65535) {
+ fprintf(stderr, PROGNAME ": Bad process id `%s'\n", cp);
+ exit(1);
+ }
+ } else if (*argv) { /* last char in an argv, use next as arg */
+ if (sscanf(cp = *argv++, "%d", &monpids[monpids_index]) != 1 ||
+ monpids[monpids_index] < 0 || monpids[monpids_index] > 65535) {
+ fprintf(stderr, PROGNAME ": Bad process id `%s'\n", cp);
+ exit(1);
+ }
+ } else {
+ fprintf(stderr, "-p requires an argument\n");
+ exit(1);
+ }
+ if (!monpids[monpids_index])
+ monpids[monpids_index] = getpid();
+ /* default to no sorting when monitoring process ids */
+ if (!monpids_index++) {
+ sort_type = S_NONE;
+ reset_sort_options();
+ }
+ cp = "_";
+ break;
+ case 'b':
+ Batch = 1;
+ break;
+ case 'c':
+ show_cmd = !show_cmd;
+ break;
+ case 'S':
+ Cumulative = 1;
+ break;
+ case 'i':
+ Noidle = 1;
+ break;
+ case 's':
+ Secure = 1;
+ break;
+ case 'C':
+ CPU_states = 1;
+ break;
+ case '-':
+ break; /* Just ignore it */
+ case 'v':
+ case 'V':
+ fprintf(stdout, "top (%s)\n", procps_version);
+ exit(0);
+ case 'h':
+ fprintf(stdout, "usage: " PROGNAME " -hvbcisqS -d delay -p pid -n iterations\n");
+ exit(0);
+ default:
+ fprintf(stderr, PROGNAME ": Unknown argument `%c'\n", *cp);
+ fprintf(stdout, "usage: " PROGNAME " -hvbcisqS -d delay -p pid -n iterations\n");
+ exit(1);
+ }
+ cp++;
+ }
+ breakargv:
+ }
+
+ if (nr_cpu > 1 && CPU_states)
+ header_lines++;
+
+ meminfo(); /* need kb_main_total value filled in */
+
+ setup_terminal();
+ window_size(0);
+ /*
+ * Set up signal handlers.
+ */
+ sact.sa_handler = end;
+ sact.sa_flags = 0;
+ sigemptyset(&sact.sa_mask);
+ sigaction(SIGHUP, &sact, NULL);
+ sigaction(SIGINT, &sact, NULL);
+ sigaction(SIGQUIT, &sact, NULL);
+ sact.sa_handler = stop;
+ sact.sa_flags = SA_RESTART;
+ sigaction(SIGTSTP, &sact, NULL);
+ sact.sa_handler = window_size;
+ sigaction(SIGWINCH, &sact, NULL);
+ sigaction(SIGCONT, &sact, NULL);
+
+ /* loop, collecting process info and sleeping */
+ while (1) {
+ if (Loops > 0)
+ Loops--;
+ /* display the tasks */
+ show_procs();
+ /* sleep & wait for keyboard input */
+ if (Loops == 0)
+ end(0);
+ if (!Batch)
+ {
+ tv.tv_sec = Sleeptime;
+ tv.tv_usec = (Sleeptime - (int) Sleeptime) * 1000000;
+ FD_ZERO(&in);
+ FD_SET(0, &in);
+ if (select(1, &in, 0, 0, &tv) > 0 && read(0, &c, 1) == 1)
+ do_key(c);
+ } else {
+ sleep(Sleeptime);
+ }
+ }
+}
+
+/*#######################################################################
+ *#### Signal handled routines: error_end, end, stop, window_size ###
+ *#### Small utilities: make_header, getstr, getint, getfloat, getsig ###
+ *#######################################################################
+ */
+
+
+ /*
+ * end when exiting with an error.
+ */
+static void error_end(int rno)
+{
+ if (!Batch)
+ tcsetattr(0, TCSAFLUSH, &Savetty);
+ PUTP(tgoto(cm, 0, Lines - 1));
+ fputs("\r\n", stdout);
+ exit(rno);
+}
+/*
+ * Normal end of execution.
+ */
+static void end(int signo)
+{
+ (void)signo;
+ if (!Batch)
+ tcsetattr(0, TCSAFLUSH, &Savetty);
+ PUTP(tgoto(cm, 0, Lines - 1));
+ fputs("\r\n", stdout);
+ exit(0);
+}
+
+/*
+ * SIGTSTP catcher.
+ */
+static void stop(int signo)
+{
+ (void)signo;
+ /* Reset terminal. */
+ if (!Batch)
+ tcsetattr(0, TCSAFLUSH, &Savetty);
+ PUTP(tgoto(cm, 0, Lines - 3));
+ fflush(stdout);
+ raise(SIGSTOP);
+ /* Later... */
+ if (!Batch)
+ tcsetattr (0, TCSAFLUSH, &Rawtty);
+}
+
+/*
+ * Reads the window size and clear the window. This is called on setup,
+ * and also catches SIGWINCHs, and adjusts Maxlines. Basically, this is
+ * the central place for window size stuff.
+ */
+static void window_size(int signo)
+{
+ struct winsize ws;
+ (void)signo;
+ if((ioctl(1, TIOCGWINSZ, &ws) != -1) && (ws.ws_col>73) && (ws.ws_row>7)){
+ Cols = ws.ws_col;
+ Lines = ws.ws_row;
+ }else{
+ Cols = tgetnum("co");
+ Lines = tgetnum("li");
+ }
+ if (!Batch)
+ clear_screen();
+ /*
+ * calculate header size, length of cmdline field ...
+ */
+ Numfields = make_header();
+}
+
+/*
+ * this prints a possible message from open_psdb_message
+ */
+static void top_message(const char *format, ...) {
+ va_list arg;
+ int n;
+ char buffer[512];
+
+ va_start (arg, format);
+ n = vsnprintf (buffer, 512, format, arg);
+ va_end (arg);
+ if (n > -1 && n < 512)
+ SHOWMESSAGE(("%s", buffer));
+}
+
+/*
+ * this adjusts the lines needed for the header to the current value
+ */
+static int make_header(void)
+{
+ int i, j;
+
+ j = 0;
+ for (i = 0; i < strlen(Fields); i++) {
+ if (Fields[i] < 'a') {
+ pflags[j++] = Fields[i] - 'A';
+ if (Fields[i] == 'U' && CL_wchan_nout == -1) {
+ CL_wchan_nout = 0;
+ /* for correct handling of WCHAN fields, we have to do distingu
+ * between kernel versions */
+ /* get kernel symbol table, if needed */
+ if (open_psdb_message(NULL, top_message)) {
+ CL_wchan_nout = 1;
+ } else {
+ psdbsucc = 1;
+ }
+ }
+ }
+ }
+ strcpy(Header, "");
+ for (i = 0; i < j; i++)
+ strcat(Header, headers[pflags[i]]);
+ /* readjust window size ... */
+ Maxcmd = Cols - strlen(Header) + 7;
+ Maxlines = Display_procs ? Display_procs : Lines - header_lines;
+ if (Maxlines > Lines - header_lines)
+ Maxlines = Lines - header_lines;
+ return (j);
+}
+
+
+
+/*
+ * Get a string from the user; the base of getint(), et al. This really
+ * ought to handle long input lines and errors better. NB: The pointer
+ * returned is a statically allocated buffer, so don't expect it to
+ * persist between calls.
+ */
+static char *getstr(void)
+{
+ static char line[BUFSIZ]; /* BUFSIZ from <stdio.h>; arbitrary */
+ int i = 0;
+
+ /* Must make sure that buffered IO doesn't kill us. */
+ fflush(stdout);
+ fflush(stdin); /* Not POSIX but ok */
+
+ do {
+ read(STDIN_FILENO, &line[i], 1);
+ } while (line[i++] != '\n' && i < sizeof(line));
+ line[--i] = 0;
+
+ return (line);
+}
+
+
+/*
+ * Get an integer from the user. Display an error message and
+ * return BAD_INPUT if it's invalid; else return the number.
+ */
+static int getint(void)
+{
+ char *line;
+ int i;
+ int r;
+
+ line = getstr();
+
+ for (i = 0; line[i]; i++) {
+ if (!isdigit(line[i]) && line[i] != '-') {
+ SHOWMESSAGE(("That's not a number!"));
+ return (BAD_INPUT);
+ }
+ }
+
+ /* An empty line is a legal error (hah!). */
+ if (!line[0])
+ return (BAD_INPUT);
+
+ sscanf(line, "%d", &r);
+ return (r);
+}
+
+
+/*
+ * Get a float from the user. Just like getint().
+ */
+static float getfloat(void)
+{
+ char *line;
+ int i;
+ float r;
+
+ line = getstr();
+
+ for (i = 0; line[i]; i++) {
+ if (!isdigit(line[i]) && line[i] != '.' && line[i] != '-') {
+ SHOWMESSAGE(("That's not a float!"));
+ return (BAD_INPUT);
+ }
+ }
+
+ /* An empty line is a legal error (hah!). */
+ if (!line[0])
+ return (BAD_INPUT);
+
+ sscanf(line, "%f", &r);
+ return (r);
+}
+
+
+/*
+ * Get a signal number or name from the user. Return the number, or -1
+ * on error.
+ */
+static int getsig(void)
+{
+ char *line;
+
+ /* This is easy. */
+ line = getstr();
+ return signal_name_to_number(line);
+}
+
+/*#######################################################################
+ *#### Routine for sorting on used time, resident memory and %CPU #####
+ *#### It would be easy to include full sorting capability as in #####
+ *#### ps, but I think there is no real use for something that #####
+ *#### complicated. Using register_sort_function or parse_sort_opt #####
+ *#### you just have to do the natural thing and it will work. #####
+ *#######################################################################
+ */
+
+static int time_sort (proc_t **P, proc_t **Q)
+{
+ if (Cumulative) {
+ if( ((*P)->cutime + (*P)->cstime + (*P)->utime + (*P)->stime) <
+ ((*Q)->cutime + (*Q)->cstime + (*Q)->utime + (*Q)->stime) )
+ return -1;
+ if( ((*P)->cutime + (*P)->cstime + (*P)->utime + (*P)->stime) >
+ ((*Q)->cutime + (*Q)->cstime + (*Q)->utime + (*Q)->stime) )
+ return 1;
+ } else {
+ if( ((*P)->utime + (*P)->stime) < ((*Q)->utime + (*Q)->stime))
+ return -1;
+ if( ((*P)->utime + (*P)->stime) > ((*Q)->utime + (*Q)->stime))
+ return 1;
+ }
+ return 0;
+}
+
+static int pcpu_sort (proc_t **P, proc_t **Q)
+{
+ if( (*P)->pcpu < (*Q)->pcpu ) return -1;
+ if( (*P)->pcpu > (*Q)->pcpu ) return 1;
+ return 0;
+}
+
+static int mem_sort (proc_t **P, proc_t **Q)
+{
+ if( (*P)->vm_rss < (*Q)->vm_rss ) return -1;
+ if( (*P)->vm_rss > (*Q)->vm_rss ) return 1;
+ return 0;
+}
+
+int age_sort (proc_t **P, proc_t **Q)
+{
+ if( (*P)->start_time < (*Q)->start_time ) return -1;
+ if( (*P)->start_time > (*Q)->start_time ) return 1;
+ return 0;
+}
+
+/*#######################################################################
+ *#### Routines handling the field selection/ordering screens: ########
+ *#### show_fields, change_order, change_fields ########
+ *#######################################################################
+ */
+
+ /*
+ * Display the specification line of all fields. Upper case indicates
+ * a displayed field, display order is according to the order of the
+ * letters. A short description of each field is shown as well.
+ * The description of a displayed field is marked by a leading
+ * asterisk (*).
+ */
+static void show_fields(void)
+{
+ int i, row, col;
+ char *p;
+
+ clear_screen();
+ PUTP(tgoto(cm, 3, 0));
+ printf("Current Field Order: %s\n", Fields);
+ for (i = 0; i < sizeof headers / sizeof headers[0]; ++i) {
+ row = i % (Lines - 3) + 3;
+ col = i / (Lines - 3) * 40;
+ PUTP(tgoto(cm, col, row));
+ for (p = headers[i]; *p == ' '; ++p);
+ printf("%c %c: %-10s = %s", (strchr(Fields, i + 'A') != NULL) ? '*' : ' ', i + 'A',
+ p, headers2[i]);
+ }
+}
+
+/*
+ * change order of displayed fields
+ */
+static void change_order(void)
+{
+ char c, ch, *p;
+ int i;
+
+ show_fields();
+ for (;;) {
+ PUTP(tgoto(cm, 0, 0));
+ PUTP(top_clrtoeol);
+ PUTP(tgoto(cm, 3, 0));
+ PUTP(mr);
+ printf("Current Field Order: %s", Fields);
+ PUTP(me);
+ putchar('\n');
+ PUTP(tgoto(cm, 0, 1));
+ printf("Upper case characters move a field to the left, lower case to the right");
+ fflush(stdout);
+ if (!Batch) { /* should always be true, but... */
+ tcsetattr(0, TCSAFLUSH, &Rawtty);
+ read(0, &c, 1);
+ tcsetattr(0, TCSAFLUSH, &Savetty);
+ }
+ i = toupper(c) - 'A';
+ if ((p = strchr(Fields, i + 'A')) != NULL) {
+ if (isupper(c))
+ p--;
+ if ((p[1] != '\0') && (p >= Fields)) {
+ ch = p[0];
+ p[0] = p[1];
+ p[1] = ch;
+ }
+ } else if ((p = strchr(Fields, i + 'a')) != NULL) {
+ if (isupper(c))
+ p--;
+ if ((p[1] != '\0') && (p >= Fields)) {
+ ch = p[0];
+ p[0] = p[1];
+ p[1] = ch;
+ }
+ } else {
+ break;
+ }
+ }
+ Numfields = make_header();
+}
+/*
+ * toggle displayed fields
+ */
+static void change_fields(void)
+{
+ int i, changed = 0;
+ int row, col;
+ char c, *p;
+ char tmp[2] = " ";
+
+ show_fields();
+ for (;;) {
+ PUTP(tgoto(cm, 0, 0));
+ PUTP(top_clrtoeol);
+ PUTP(tgoto(cm, 3, 0));
+ PUTP(mr);
+ printf("Current Field Order: %s", Fields);
+ PUTP(me);
+ putchar('\n');
+ PUTP(tgoto(cm, 0, 1));
+ if (!Batch) { /* should always be true, but... */
+ printf("Toggle fields with a-x, any other key to return: ");
+ fflush(stdout);
+ tcsetattr(0, TCSAFLUSH, &Rawtty);
+ read(0, &c, 1);
+ tcsetattr(0, TCSAFLUSH, &Savetty);
+ }
+ i = toupper(c) - 'A';
+ if (i >= 0 && i < sizeof headers / sizeof headers[0]) {
+ row = i % (Lines - 3) + 3;
+ col = i / (Lines - 3) * 40;
+ PUTP(tgoto(cm, col, row));
+ if ((p = strchr(Fields, i + 'A')) != NULL) { /* deselect Field */
+ *p = i + 'a';
+ putchar(' ');
+ } else if ((p = strchr(Fields, i + 'a')) != NULL) { /* select previously */
+ *p = i + 'A'; /* deselected field */
+ putchar('*');
+ } else { /* select new field */
+ tmp[0] = i + 'A';
+ strcat(Fields, tmp);
+ putchar('*');
+ }
+ changed = 1;
+ fflush(stdout);
+ } else
+ break;
+ }
+ if (changed)
+ Numfields = make_header();
+}
+
+/* Do the scaling stuff: interprets time in seconds, formats it to
+ * fit width, and returns pointer to static char*.
+ */
+static char *scale_time(int t,int width)
+{
+ static char buf[100];
+
+ /* Try successively higher units until it fits */
+
+ sprintf(buf,"%d:%02d",t/60,t%60); /* minutes:seconds */
+ if (strlen(buf)<=width)
+ return buf;
+
+ t/=60; /* minutes */
+ sprintf(buf,"%dm",t);
+ if (strlen(buf)<=width)
+ return buf;
+
+ t/=60; /* hours */
+ sprintf(buf,"%dh",t);
+ if (strlen(buf)<=width)
+ return buf;
+
+ t/=24; /* days */
+ sprintf(buf,"%dd",t);
+ if (strlen(buf)<=width)
+ return buf;
+
+ t/=7; /* weeks */
+ sprintf(buf,"%dw",t);
+ return buf; /* this is our last try;
+ if it still doesn't fit, too bad. */
+
+ /* FIXME: if someone has a 16-way SMP running over a year... */
+}
+
+/* scale_k(k,width,unit) - interprets k as a count, formats to fit width.
+ if unit is 0, k is a byte count; 1 is a kilobyte
+ count; 2 for megabytes; 3 for gigabytes.
+*/
+
+static char *scale_k(int k,int width,int unit)
+{
+ /* kilobytes, megabytes, gigabytes, too-big-for-int-bytes */
+ static double scale[]={1024,1024*1024,1024*1024*1024,0};
+ /* kilo, mega, giga, tera */
+ static char unitletters[]={'K','M','G','T',0};
+ static char buf[100];
+ char *up;
+ double *dp;
+
+ /* Try successively higher units until it fits */
+
+ sprintf(buf,"%d",k);
+ if (strlen(buf)<=width)
+ return buf;
+
+ for (up=unitletters+unit,dp=scale ; *dp ; ++dp,++up) {
+ sprintf(buf,"%.1f%c",k / *dp,*up);
+ if (strlen(buf)<=width)
+ return buf;
+ sprintf(buf,"%d%c",(int)(k / *dp),*up);
+ if (strlen(buf)<=width)
+ return buf;
+ }
+
+ /* Give up; give them what we got on our shortest attempt */
+ return buf;
+}
+
+/*
+ *#######################################################################
+ *#### Routines handling the main top screen: ########
+ *#### show_task_info, show_procs, show_memory, do_stats ########
+ *#######################################################################
+ */
+ /*
+ * Displays infos for a single task
+ */
+static void show_task_info(proc_t *task)
+{
+ int i,j;
+ unsigned int t;
+ char *cmdptr;
+ char tmp[2048], tmp2[2048] = "", tmp3[2048] = "", *p;
+
+ for (i = 0; i < Numfields; i++) {
+ tmp[0] = 0;
+ switch (pflags[i]) {
+ case P_PID:
+ sprintf(tmp, "%5d ", task->pid);
+ break;
+ case P_PPID:
+ sprintf(tmp, "%5d ", task->ppid);
+ break;
+ case P_EUID:
+ sprintf(tmp, "%4d ", task->euid);
+ break;
+ case P_EUSER:
+ sprintf(tmp, "%-8.8s ", task->euser);
+ break;
+ case P_PCPU:
+ sprintf(tmp, "%4.1f ", (float)task->pcpu / 10);
+ break;
+ case P_LCPU:
+ sprintf(tmp, "%2d ", task->processor);
+ break;
+ case P_PMEM: {
+ unsigned pmem;
+ pmem = task->vm_rss * 1000ULL / kb_main_total;
+ if (pmem > 999) pmem = 999;
+ sprintf(tmp, "%2u.%u ", pmem/10U, pmem%10U);
+ }
+ break;
+ case P_TTY: {
+ char outbuf[9];
+ dev_to_tty(outbuf, 8, task->tty, task->pid, ABBREV_DEV);
+ sprintf(tmp, "%-8.8s ", outbuf);
+ }
+ break;
+ case P_PRI:
+ sprintf(tmp, "%3.3s ", scale_k(task->priority, 3, 0));
+ break;
+ case P_NICE:
+ sprintf(tmp, "%3.3s ", scale_k(task->nice, 3, 0));
+ break;
+ case P_PAGEIN:
+ sprintf(tmp, "%6.6s ", scale_k(task->maj_flt, 6, 0));
+ break;
+ case P_TSIZ:
+ sprintf(tmp, "%5.5s ",
+ scale_k(((task->end_code - task->start_code) / 1024), 5, 1));
+ break;
+ case P_DSIZ:
+ sprintf(tmp, "%5.5s ",
+ scale_k(((task->vsize - task->end_code) / 1024), 5, 1));
+ break;
+ case P_SIZE:
+ sprintf(tmp, "%5.5s ", scale_k((task->size << CL_pg_shift), 5, 1));
+ break;
+ case P_TRS:
+ sprintf(tmp, "%4.4s ", scale_k((task->trs << CL_pg_shift), 4, 1));
+ break;
+ case P_SWAP:
+ sprintf(tmp, "%4.4s ",
+ scale_k(((task->size - task->resident) << CL_pg_shift), 4, 1));
+ break;
+ case P_SHARE:
+ sprintf(tmp, "%5.5s ", scale_k((task->share << CL_pg_shift), 5, 1));
+ break;
+ case P_A:
+ sprintf(tmp, "%3.3s ", "NYI");
+ break;
+ case P_WP:
+ sprintf(tmp, "%3.3s ", "NYI");
+ break;
+ case P_DT:
+ sprintf(tmp, "%3.3s ", scale_k(task->dt, 3, 0));
+ break;
+ case P_RSS: /* rss, not resident (which includes IO memory) */
+ sprintf(tmp, "%4.4s ",
+ scale_k((task->rss << CL_pg_shift), 4, 1));
+ break;
+ case P_WCHAN:
+ if (!CL_wchan_nout)
+ sprintf(tmp, "%-9.9s ", wchan(task->wchan));
+ else
+ sprintf(tmp, "%-9lx", task->wchan);
+ break;
+ case P_STAT:
+ sprintf(tmp, "%-4.4s ", status(task));
+ break;
+ case P_TIME:
+ t = (task->utime + task->stime) / Hertz;
+ if (Cumulative)
+ t += (task->cutime + task->cstime) / Hertz;
+ sprintf(tmp, "%6.6s ", scale_time(t,6));
+ break;
+ case P_COMMAND:
+ if (!show_cmd && task->cmdline && *(task->cmdline)) {
+ j=0;
+ while(((task->cmdline)[j] != NULL) && (strlen(tmp3)<1020)){
+/* #if 0 */ /* This is useless? FIXME */
+ if (j > 0)
+ strcat(tmp3, " ");
+/* #endif */
+ strncat(tmp3, (task->cmdline)[j], 1000);
+ j++;
+ }
+ cmdptr = tmp3;
+ } else {
+ cmdptr = task->cmd;
+ }
+ if (strlen(cmdptr) > Maxcmd)
+ cmdptr[Maxcmd - 1] = 0;
+ sprintf(tmp, "%s", cmdptr);
+ tmp3[0]=0;
+ break;
+ case P_FLAGS:
+ sprintf(tmp, "%8lx ", task->flags);
+ break;
+ }
+ strcat(tmp2, tmp);
+ }
+ if (strlen(tmp2) > Cols - 1)
+ tmp2[Cols - 1] = 0;
+
+ /* take care of cases like:
+ perl -e 'foo
+ bar foo bar
+ foo
+ # end of perl script'
+ */
+ for (p=tmp2;*p;++p)
+ if (!isgraph(*p))
+ *p=' ';
+
+ printf("\n%s", tmp2);
+ PUTP(top_clrtoeol);
+}
+
+/*
+ * This is the real program! Read process info and display it.
+ * One could differentiate options of readproctable2, perhaps it
+ * would be useful to support the PROC_UID and PROC_TTY
+ * as command line options.
+ */
+static void show_procs(void)
+{
+ static proc_t **p_table=NULL;
+ static int proc_flags;
+ int count;
+ int ActualLines;
+ float elapsed_time;
+ static int first=0;
+
+ if (first==0) {
+ proc_flags=PROC_FILLMEM|PROC_FILLCMD|PROC_FILLUSR|PROC_FILLSTATUS|PROC_FILLSTAT;
+ if (monpids_index)
+ proc_flags |= PROC_PID;
+ p_table=readproctab2(proc_flags, p_table, monpids);
+ elapsed_time = get_elapsed_time();
+ do_stats(p_table, elapsed_time, 0);
+ sleep(1);
+ first=1;
+ }
+ if (first && Batch)
+ fputs("\n\n",stdout);
+ /* Display the load averages. */
+ PUTP(ho);
+ PUTP(md);
+ if (show_loadav) {
+ printf("%s", sprint_uptime());
+ PUTP(top_clrtoeol);
+ putchar('\n');
+ }
+ p_table=readproctab2(proc_flags, p_table, monpids);
+ /* Immediately find out the elapsed time for the frame. */
+ elapsed_time = get_elapsed_time();
+ /* Display the system stats, calculate percent CPU time
+ * and sort the list. */
+ do_stats(p_table, elapsed_time,1);
+ /* Display the memory and swap space usage. */
+ show_meminfo();
+ if (strlen(Header) + 2 > Cols)
+ Header[Cols - 2] = 0;
+ PUTP(mr);
+ fputs(Header, stdout);
+ PUTP(top_clrtoeol);
+ PUTP(me);
+
+ /*
+ * Finally! Loop through to find the top task, and display it.
+ * Lather, rinse, repeat.
+ */
+ count = 0;
+ ActualLines = 0;
+ while ((ActualLines < Maxlines) && (p_table[count]->pid!=-1)) {
+ char Stat;
+
+ Stat = p_table[count]->state;
+
+ if ( (!Noidle || (Stat != 'S' && Stat != 'Z')) &&
+ ( (CurrUser[0] == '\0') ||
+ (!strcmp((char *)CurrUser,p_table[count]->euser) ) ) ) {
+
+ /*
+ * Show task info.
+ */
+ show_task_info(p_table[count]);
+ if (!Batch)
+ ActualLines++;
+ }
+ count++;
+ }
+ PUTP(top_clrtobot);
+ PUTP(tgoto(cm, 0, header_lines - 2));
+ fflush(stdout);
+}
+
+
+/*
+ * Finds the current time (in microseconds) and calculates the time
+ * elapsed since the last update. This is essential for computing
+ * percent CPU usage.
+ */
+static float get_elapsed_time(void)
+{
+ struct timeval t;
+ static struct timeval oldtime;
+ struct timezone timez;
+ float elapsed_time;
+
+ gettimeofday(&t, &timez);
+ elapsed_time = (t.tv_sec - oldtime.tv_sec)
+ + (float) (t.tv_usec - oldtime.tv_usec) / 1000000.0;
+ oldtime.tv_sec = t.tv_sec;
+ oldtime.tv_usec = t.tv_usec;
+ return (elapsed_time);
+}
+
+/*
+ * Reads the memory info and displays it. Returns the total memory
+ * available, for use in percent memory usage calculations.
+ */
+static void show_meminfo(void)
+{
+ meminfo(); /* read+parse /proc/meminfo */
+ if (show_memory) {
+ printf(
+ "Mem: %8dK total, %8dK used, %8dK free, %8dK buffers",
+ kb_main_total,
+ kb_main_used,
+ kb_main_free,
+ kb_main_buffers
+ );
+ PUTP(top_clrtoeol);
+ putchar('\n');
+ printf(
+ "Swap: %8dK total, %8dK used, %8dK free, %8dK cached",
+ kb_swap_total,
+ kb_swap_used,
+ kb_swap_free,
+ kb_main_cached
+ );
+ PUTP(top_clrtoeol);
+ putchar('\n');
+ }
+ PUTP(me);
+ PUTP(top_clrtoeol);
+ putchar('\n');
+}
+
+
+/*
+ * Calculates the number of tasks in each state (running, sleeping, etc.).
+ * Calculates the CPU time in each state (system, user, nice, etc).
+ * Calculates percent cpu usage for each task.
+ */
+static void do_stats(proc_t** p, float elapsed_time, int pass)
+{
+ proc_t *this;
+ int arrindex, total_time, cpumap, i, n = 0;
+ int sleeping = 0, stopped = 0, zombie = 0, running = 0;
+ double system_ticks, user_ticks, nice_ticks, idle_ticks;
+ static int prev_count = 0;
+ int systime, usrtime;
+
+ /* start with one page as a reasonable allocate size */
+ static int save_history_size =
+ sizeof(long)*1024 / sizeof(struct save_hist);
+ static struct save_hist *save_history;
+ struct save_hist *New_save_hist;
+
+ if (!save_history)
+ save_history = xcalloc(NULL, sizeof(struct save_hist)*save_history_size);
+ New_save_hist = xcalloc(NULL, sizeof(struct save_hist)*save_history_size);
+
+ /*
+ * Make a pass through the data to get stats.
+ */
+ arrindex = 0;
+ while (p[n]->pid != -1) {
+ this = p[n];
+ switch (this->state) {
+ case 'S':
+ case 'D':
+ sleeping++;
+ break;
+ case 'T':
+ stopped++;
+ break;
+ case 'Z':
+ zombie++;
+ break;
+ case 'R':
+ running++;
+ break;
+ default:
+ /* Don't know how to handle this one. */
+ break;
+ }
+
+ /*
+ * Calculate time in this process. Time is sum of user time
+ * (usrtime) plus system time (systime).
+ */
+ total_time = this->utime + this->stime;
+ if (arrindex >= save_history_size) {
+ save_history_size *= 2;
+ save_history = xrealloc(save_history, sizeof(struct save_hist)*save_history_size);
+ New_save_hist = xrealloc(New_save_hist, sizeof(struct save_hist)*save_history_size);
+ }
+ New_save_hist[arrindex].ticks = total_time;
+ New_save_hist[arrindex].pid = this->pid;
+ systime = this->stime;
+ usrtime = this->utime;
+ New_save_hist[arrindex].stime = systime;
+ New_save_hist[arrindex].utime = usrtime;
+
+ /* find matching entry from previous pass */
+ for (i = 0; i < prev_count; i++) {
+ if (save_history[i].pid == this->pid) {
+ total_time -= save_history[i].ticks;
+ systime -= save_history[i].stime;
+ usrtime -= save_history[i].utime;
+
+ i = prev_count;
+ }
+ }
+
+ /*
+ * Calculate percent cpu time for this task.
+ */
+ this->pcpu = (total_time * 10 * 100/Hertz) / elapsed_time;
+ if (this->pcpu > 999)
+ this->pcpu = 999;
+
+ arrindex++;
+ n++;
+ }
+
+ /*
+ * Display stats.
+ */
+ if (pass > 0 && show_stats) {
+ printf("%d processes: %d sleeping, %d running, %d zombie, "
+ "%d stopped",
+ n, sleeping, running, zombie, stopped);
+ PUTP(top_clrtoeol);
+ putchar('\n');
+ four_cpu_numbers(&user_ticks,&nice_ticks,&system_ticks,&idle_ticks);
+ printf("CPU states:"
+ " %# 5.1f%% user, %# 5.1f%% system,"
+ " %# 5.1f%% nice, %# 5.1f%% idle",
+ user_ticks,
+ system_ticks,
+ nice_ticks,
+ idle_ticks
+ );
+ PUTP(top_clrtoeol);
+ putchar('\n');
+ }
+ /*
+ * Save this frame's information.
+ */
+ for (i = 0; i < n; i++) {
+ /* copy the relevant info for the next pass */
+ save_history[i].pid = New_save_hist[i].pid;
+ save_history[i].ticks = New_save_hist[i].ticks;
+ save_history[i].stime = New_save_hist[i].stime;
+ save_history[i].utime = New_save_hist[i].utime;
+ }
+ free(New_save_hist);
+
+ prev_count = n;
+ qsort(p, n, sizeof(proc_t*), (void*)mult_lvl_cmp);
+}
+
+
+/*
+ * Process keyboard input during the main loop
+ */
+static void do_key(char c)
+{
+ int numinput, i;
+ char rcfile[MAXNAMELEN];
+ FILE *fp;
+
+ /*
+ * First the commands which don't require a terminal mode switch.
+ */
+ if (c == 'q')
+ end(0);
+ else if (c == ' ')
+ return;
+ else if (c == 12) {
+ clear_screen();
+ return;
+ } else if (c == 'I') {
+ Irixmode=(Irixmode) ? 0 : 1;
+ return;
+ }
+
+ /*
+ * Switch the terminal to normal mode. (Will the original
+ * attributes always be normal? Does it matter? I suppose the
+ * shell will be set up the way the user wants it.)
+ */
+ if (!Batch) tcsetattr(0, TCSANOW, &Savetty);
+
+ /*
+ * Handle the rest of the commands.
+ */
+ switch (c) {
+ case '?':
+ case 'h':
+ PUTP(cl); PUTP(ho); putchar('\n'); PUTP(mr);
+ printf("Proc-Top Revision 1.2");
+ PUTP(me); putchar('\n');
+ printf("Secure mode ");
+ PUTP(md);
+ fputs(Secure ? "on" : "off", stdout);
+ PUTP(me);
+ fputs("; cumulative mode ", stdout);
+ PUTP(md);
+ fputs(Cumulative ? "on" : "off", stdout);
+ PUTP(me);
+ fputs("; noidle mode ", stdout);
+ PUTP(md);
+ fputs(Noidle ? "on" : "off", stdout);
+ PUTP(me);
+ fputs("\n\n", stdout);
+ printf("%s\n\nPress any key to continue", Secure ? SECURE_HELP_SCREEN : HELP_SCREEN);
+ if (!Batch) tcsetattr(0, TCSANOW, &Rawtty);
+ (void) getchar();
+ break;
+ case 'i':
+ Noidle = !Noidle;
+ SHOWMESSAGE(("No-idle mode %s", Noidle ? "on" : "off"));
+ break;
+ case 'u':
+ SHOWMESSAGE(("Which User (Blank for All): "));
+ strcpy(CurrUser,getstr());
+ break;
+ case 'k':
+ if (Secure)
+ SHOWMESSAGE(("\aCan't kill in secure mode"));
+ else {
+ int pid, signo;
+ PUTP(md);
+ SHOWMESSAGE(("PID to kill: "));
+ pid = getint();
+ if (pid == BAD_INPUT)
+ break;
+ PUTP(top_clrtoeol);
+ SHOWMESSAGE(("Kill process %d with what signal? [15] ", pid));
+ PUTP(me);
+ signo = getsig();
+ /* FIXME: -1 may mean an unknown signal */
+ if (signo == -1)
+ signo = SIGTERM;
+ if (kill(pid, signo))
+ SHOWMESSAGE(("\aKill of PID %d with %d failed: %s",
+ pid, signo, strerror(errno)));
+ }
+ break;
+ case 'l':
+ SHOWMESSAGE(("Display load average %s", !show_loadav ? "on" : "off"));
+ if (show_loadav) {
+ show_loadav = 0;
+ header_lines--;
+ } else {
+ show_loadav = 1;
+ header_lines++;
+ }
+ Numfields = make_header();
+ break;
+ case 'm':
+ SHOWMESSAGE(("Display memory information %s", !show_memory ? "on" : "off"));
+ if (show_memory) {
+ show_memory = 0;
+ header_lines -= 2;
+ } else {
+ show_memory = 1;
+ header_lines += 2;
+ }
+ Numfields = make_header();
+ break;
+ case 'M':
+ SHOWMESSAGE(("Sort by memory usage"));
+ sort_type = S_MEM;
+ reset_sort_options();
+ register_sort_function(-1, (cmp_t)mem_sort);
+ break;
+ case 'n':
+ case '#':
+ printf("Processes to display (0 for unlimited): ");
+ numinput = getint();
+ if (numinput != -1) {
+ Display_procs = numinput;
+ window_size(0);
+ }
+ break;
+ case 'r':
+ if (Secure)
+ SHOWMESSAGE(("\aCan't renice in secure mode"));
+ else {
+ int pid, val;
+
+ printf("PID to renice: ");
+ pid = getint();
+ if (pid == BAD_INPUT)
+ break;
+ PUTP(tgoto(cm, 0, header_lines - 2));
+ PUTP(top_clrtoeol);
+ printf("Renice PID %d to value: ", pid);
+ val = getint();
+ if (val == BAD_INPUT)
+ val = 10;
+ if (setpriority(PRIO_PROCESS, pid, val))
+ SHOWMESSAGE(("\aRenice of PID %d to %d failed: %s",
+ pid, val, strerror(errno)));
+ }
+ break;
+ case 'P':
+ SHOWMESSAGE(("Sort by CPU usage"));
+ sort_type = S_PCPU;
+ reset_sort_options();
+ register_sort_function(-1, (cmp_t)pcpu_sort);
+ break;
+ case 'A':
+ SHOWMESSAGE(("Sort by age"));
+ sort_type = S_AGE;
+ reset_sort_options();
+ register_sort_function(-1, (cmp_t)age_sort);
+ break;
+ case 'N':
+ SHOWMESSAGE(("Sort numerically by pid"));
+ sort_type = S_NONE;
+ reset_sort_options();
+ break;
+ case 'c':
+ show_cmd = !show_cmd;
+ SHOWMESSAGE(("Show %s", show_cmd ? "command names" : "command line"));
+ break;
+ case 'S':
+ Cumulative = !Cumulative;
+ SHOWMESSAGE(("Cumulative mode %s", Cumulative ? "on" : "off"));
+ if (Cumulative)
+ headers[22][1] = 'C';
+ else
+ headers[22][1] = ' ';
+ Numfields = make_header();
+ break;
+ case 's':
+ if (Secure)
+ SHOWMESSAGE(("\aCan't change delay in secure mode"));
+ else {
+ double tmp;
+ printf("Delay between updates: ");
+ tmp = getfloat();
+ if (!(tmp < 0))
+ Sleeptime = tmp;
+ }
+ break;
+ case 't':
+ SHOWMESSAGE(("Display summary information %s", !show_stats ? "on" : "off"));
+ if (show_stats) {
+ show_stats = 0;
+ header_lines -= 2;
+ } else {
+ show_stats = 1;
+ header_lines += 2;
+ }
+ Numfields = make_header();
+ break;
+ case 'T':
+ SHOWMESSAGE(("Sort by %stime", Cumulative ? "cumulative " : ""));
+ sort_type = S_TIME;
+ reset_sort_options();
+ register_sort_function( -1, (cmp_t)time_sort);
+ break;
+ case 'f':
+ case 'F':
+ change_fields();
+ break;
+ case 'o':
+ case 'O':
+ change_order();
+ break;
+ case 'W':
+ if (getenv("HOME")) {
+ strcpy(rcfile, getenv("HOME"));
+ strcat(rcfile, "/");
+ strcat(rcfile, RCFILE);
+ fp = fopen(rcfile, "w");
+ if (fp != NULL) {
+ fprintf(fp, "%s\n", Fields);
+ i = (int) Sleeptime;
+ if (i < 2)
+ i = 2;
+ if (i > 9)
+ i = 9;
+ fprintf(fp, "%d", i);
+ if (Secure)
+ fprintf(fp, "%c", 's');
+ if (Cumulative)
+ fprintf(fp, "%c", 'S');
+ if (!show_cmd)
+ fprintf(fp, "%c", 'c');
+ if (Noidle)
+ fprintf(fp, "%c", 'i');
+ if (!show_memory)
+ fprintf(fp, "%c", 'm');
+ if (!show_loadav)
+ fprintf(fp, "%c", 'l');
+ if (!show_stats)
+ fprintf(fp, "%c", 't');
+ if (!Irixmode)
+ fprintf(fp, "%c", 'I');
+ fprintf(fp, "\n");
+ fclose(fp);
+ SHOWMESSAGE(("Wrote configuration to %s", rcfile));
+ } else {
+ SHOWMESSAGE(("Couldn't open %s", rcfile));
+ }
+ } else {
+ SHOWMESSAGE(("Couldn't get $HOME -- not saving"));
+ }
+ break;
+ default:
+ SHOWMESSAGE(("\aUnknown command `%c' -- hit `h' for help", c));
+ }
+
+ /*
+ * Return to raw mode.
+ */
+ if (!Batch) tcsetattr(0, TCSANOW, &Rawtty);
+ return;
+}
+
+
+/*#####################################################################
+ *####### A readproctable function that uses already allocated #####
+ *####### table entries. #####
+ *#####################################################################
+ */
+#define Do(x) (flags & PROC_ ## x)
+
+static proc_t** readproctab2(int flags, proc_t** tab, ...) {
+ PROCTAB* PT = NULL;
+ static proc_t *buff;
+ int n = 0;
+ static int len = 0;
+ va_list ap;
+
+ va_start(ap, tab); /* pass through args to openproc */
+ if (Do(UID)) {
+ /* temporary variables to ensure that va_arg() instances
+ * are called in the right order
+ */
+ uid_t* u;
+ int i;
+
+ u = va_arg(ap, uid_t*);
+ i = va_arg(ap, int);
+ PT = openproc(flags, u, i);
+ }
+ else if (Do(PID)) {
+ PT = openproc(flags, va_arg(ap, void*)); /* assume ptr sizes same */
+ /* work around a bug in openproc() */
+ PT->procfs = NULL;
+ /* share some process time, since we skipped opendir("/proc") */
+ usleep (50*1000);
+ }
+ else if (Do(TTY) || Do(STAT))
+ PT = openproc(flags, va_arg(ap, void*)); /* assume ptr sizes same */
+ else
+ PT = openproc(flags);
+ va_end(ap);
+ buff = (proc_t *) 1;
+ while (n<len && buff) { /* read table: (i) already allocated chunks */
+ if (tab[n]->cmdline) {
+ free((void*)*tab[n]->cmdline);
+ tab[n]->cmdline = NULL;
+ }
+ buff = readproc(PT, tab[n]);
+ if (buff) n++;
+ }
+ if (buff) {
+ do { /* (ii) not yet allocated chunks */
+ tab = xrealloc(tab, (n+1)*sizeof(proc_t*));/* realloc as we go, using */
+ buff = readproc(PT, NULL); /* final null to terminate */
+ if(buff) tab[n]=buff;
+ len++;
+ n++;
+ } while (buff); /* stop when NULL reached */
+ tab[n-1] = xcalloc(NULL, sizeof (proc_t));
+ tab[n-1]->pid=-1; /* Mark end of Table */
+ } else {
+ if (n == len) {
+ tab = xrealloc(tab, (n+1)*sizeof(proc_t*));
+ tab[n] = xcalloc(NULL, sizeof (proc_t));
+ len++;
+ }
+ tab[n]->pid=-1; /* Use this instead of NULL when not at the end of */
+ } /* the allocated space */
+ closeproc(PT);
+ return tab;
+}
--- /dev/null
+[Desktop Entry]
+Name=Top
+Type=Application
+Comment=Repeatedly display processes by CPU time, memory usage, etc.
+Exec=top
+Terminal=true
--- /dev/null
+/*
+ * top.h header file 1996/05/18,
+ *
+ * function prototypes, global data definitions and string constants.
+ */
+
+static proc_t** readproctab2(int flags, proc_t** tab, ...);
+static void parse_options(char *Options, int secure);
+static void get_options(void);
+static void error_end(int rno);
+static void end(int signo);
+static void stop(int signo);
+static void window_size(int signo);
+static int make_header(void);
+static char *getstr(void);
+static int getsig(void);
+static float getfloat(void);
+static int time_sort(proc_t **P, proc_t **Q);
+static int pcpu_sort(proc_t **P, proc_t **Q);
+static int mem_sort(proc_t **P, proc_t **Q);
+static int age_sort(proc_t **P, proc_t **Q);
+static void show_fields(void);
+static void change_order(void);
+static void change_fields(void);
+static void show_task_info(proc_t *task);
+static void show_procs(void);
+static float get_elapsed_time(void);
+static void show_meminfo(void);
+static void do_stats(proc_t** p, float elapsed_time, int pass);
+static void do_key(char c);
+
+
+/* configurable field display support */
+
+static int pflags[30];
+static int Numfields;
+
+
+ /* Name of the config file (in $HOME) */
+#ifndef RCFILE
+#define RCFILE ".toprc"
+#endif
+
+#ifndef SYS_TOPRC
+#define SYS_TOPRC "/etc/toprc"
+#endif
+
+#define MAXLINES 2048
+#define MAXNAMELEN 1024
+
+/* this is what procps top does by default, so let's do this, if nothing is
+ * specified
+ */
+#ifndef DEFAULT_SHOW
+/* 0 1 2 3 */
+/* 0123456789012345678901234567890 */
+#define DEFAULT_SHOW "AbcDgHIjklMnoTP|qrsuzyV{EFWX"
+#endif
+static char Fields[256] = "";
+
+
+/* This structure stores some critical information from one frame to
+ the next. mostly used for sorting. Added cumulative and resident fields. */
+struct save_hist {
+ int ticks;
+ int pid;
+ int pcpu;
+ int utime;
+ int stime;
+};
+
+ /* The original terminal attributes. */
+static struct termios Savetty;
+ /* The new terminal attributes. */
+static struct termios Rawtty;
+ /* Cached termcap entries. */
+static char *cm, *cl, *top_clrtobot, *top_clrtoeol, *ho, *md, *me, *mr;
+ /* Current window size. Note that it is legal to set Display_procs
+ larger than can fit; if the window is later resized, all will be ok.
+ In other words: Display_procs is the specified max number of
+ processes to display (zero for infinite), and Maxlines is the actual
+ number. */
+static int Lines, Cols, Maxlines, Display_procs;
+ /* Maximum length to display of the command line of a process. */
+static unsigned Maxcmd;
+
+ /* Controls how long we sleep between screen updates. Accurate to
+ microseconds. */
+static float Sleeptime = 5;
+ /* for opening/closing the system map */
+static int psdbsucc = 0;
+ /* Mode flags. */
+static int Irixmode = 1;
+static int Secure = 0;
+static int Cumulative = 0;
+static int Noidle = 0;
+
+static int CPU_states = 0;
+static char CurrUser[BUFSIZ];
+
+static int CL_pg_shift = (PAGE_SHIFT - 10);
+static int CL_wchan_nout = -1;
+
+static int show_stats = 1; /* show status summary */
+static int show_memory = 1; /* show memory summary */
+static int show_loadav = 1; /* show load average and uptime */
+static int show_cmd = 1; /* show command name instead of commandline */
+
+static pid_t monpids[520]; /* randomly chosen value */
+static const int monpids_max = sizeof(monpids)/sizeof(pid_t);
+static int monpids_index = 0;
+
+static int Loops = -1; /* number of iterations. -1 loops forever */
+static int Batch = 0; /* batch mode. Collect no input, dumb output */
+
+/* sorting order: cpu%, mem, time (cumulative, if in cumulative mode) */
+enum {
+ S_PCPU, S_MEM, S_TIME, S_AGE, S_NONE
+};
+/* default sorting by CPU% */
+static int sort_type = S_PCPU;
+
+/* flags for each possible field. At the moment up to 30 are supported */
+enum {
+ P_PID, P_PPID, P_EUID, P_EUSER,
+ P_PCPU, P_PMEM, P_TTY, P_PRI,
+ P_NICE, P_PAGEIN, P_TSIZ, P_DSIZ,
+ P_SIZE, P_TRS, P_SWAP, P_SHARE,
+ P_A, P_WP, P_DT, P_RSS,
+ P_WCHAN, P_STAT, P_TIME, P_COMMAND,
+ P_LCPU, P_FLAGS, P_END
+};
+/* corresponding headers */
+static char *headers[] =
+{
+ " PID ", " PPID ", " UID ",
+ "USER ", "%CPU ", "%MEM ",
+ "TTY ", "PRI ", " NI ",
+ "PAGEIN ", "TSIZE ", "DSIZE ",
+ " SIZE ", " TRS ", "SWAP ",
+ "SHARE ", " A ", " WP ",
+ " D ", " RSS ", "WCHAN ",
+ "STAT ", " TIME ", "COMMAND",
+ "LC ",
+ " FLAGS "
+};
+/* corresponding field desciptions */
+static char *headers2[] =
+{
+ "Process Id", "Parent Process Id", "User Id",
+ "User Name", "CPU Usage", "Memory Usage",
+ "Controlling tty", "Priority", "Nice Value",
+ "Page Fault Count", "Code Size (kb)", "Data+Stack Size (kb)",
+ "Virtual Image Size (kb)", "Resident Text Size (kb)", "Swapped kb",
+ "Shared Pages (kb)", "Accessed Page count", "Write Protected Pages",
+ "Dirty Pages", "Resident Set Size (kb)", "Sleeping in Function",
+ "Process Status", "CPU Time", "Command",
+ "Last used CPU (expect this to change regularly)",
+ "Task Flags (see linux/sched.h)"
+};
+
+ /* The header printed at the top of the process list.*/
+static char Header[MAXLINES];
+
+ /* The response to the interactive 'h' command. */
+#define HELP_SCREEN "\
+Interactive commands are:\n\
+\n\
+space\tUpdate display\n\
+^L\tRedraw the screen\n\
+fF\tadd and remove fields\n\
+oO\tChange order of displayed fields\n\
+h or ?\tPrint this list\n\
+S\tToggle cumulative mode\n\
+i\tToggle display of idle proceses\n\
+I\tToggle between Irix and Solaris views (SMP-only)\n\
+c\tToggle display of command name/line\n\
+l\tToggle display of load average\n\
+m\tToggle display of memory information\n\
+t\tToggle display of summary information\n\
+k\tKill a task (with any signal)\n\
+r\tRenice a task\n\
+N\tSort by pid (Numerically)\n\
+A\tSort by age\n\
+P\tSort by CPU usage\n\
+M\tSort by resident memory usage\n\
+T\tSort by time / cumulative time\n\
+u\tShow only a specific user\n\
+n or #\tSet the number of process to show\n\
+s\tSet the delay in seconds between updates\n\
+W\tWrite configuration file ~/.toprc\n\
+q\tQuit"
+#define SECURE_HELP_SCREEN "\
+Interactive commands available in secure mode are:\n\
+\n\
+space\tUpdate display\n\
+^L\tRedraw the screen\n\
+fF\tadd and remove fields\n\
+h or ?\tPrint this list\n\
+S\tToggle cumulative mode\n\
+i\tToggle display of idle proceses\n\
+c\tToggle display of command name/line\n\
+l\tToggle display of load average\n\
+m\tToggle display of memory information\n\
+t\tToggle display of summary information\n\
+n or #\tSet the number of process to show\n\
+u\tShow only a specific user\n\
+oO\tChange order of displayed fields\n\
+W\tWrite configuration file ~/.toprc\n\
+q\tQuit"
+
+ /* Number of lines needed to display the header information. */
+static int header_lines;
+
+/* ############## Some Macro definitions for screen handling ######### */
+ /* String to use in error messages. */
+#define PROGNAME "top"
+ /* Clear the screen. */
+#define clear_screen() \
+ printf("%s", cl)
+ /* Show an error in the context of the spiffy full-screen display. */
+#define SHOWMESSAGE(x) do { \
+ printf("%s%s%s%s", tgoto(cm, 0, header_lines-2), top_clrtoeol,md,mr); \
+ printf x; \
+ printf ("%s",me); \
+ fflush(stdout); \
+ sleep(2); \
+ } while (0)
--- /dev/null
+.\" -*-Nroff-*-
+.\"
+.TH UPTIME 1 "26 Jan 1993" "Cohesive Systems" "Linux User's Manual"
+.SH NAME
+uptime \- Tell how long the system has been running.
+.SH SYNOPSIS
+.B uptime
+.br
+.BR uptime " [" "\-V" ]
+.SH DESCRIPTION
+.B uptime
+gives a one line display of the following information.
+The current time,
+how long the system has been running,
+how many users are currently logged on,
+and the system load averages for the past 1, 5, and 15 minutes.
+.sp
+This is the same information contained in the header line displayed by
+.BR w (1).
+.SH FILES
+.IR /var/run/utmp " information about who is currently logged on"
+.br
+.IR /proc " process information"
+.SH AUTHORS
+.B uptime
+was written by Larry Greenfield <greenfie@gauss.rutgers.edu> and
+Michael K. Johnson <johnsonm@sunsite.unc.edu>.
+
+Please send bug reports to <acahalan@cs.uml.edu>
+.SH "SEE ALSO"
+.BR ps (1),
+.BR top (1),
+.BR utmp (5),
+.BR w (1)
--- /dev/null
+#include <string.h>
+#include "proc/whattime.h"
+#include "proc/version.h"
+
+int main(int argc, char *argv[]) {
+ if(argc == 1) print_uptime();
+ if((argc == 2) && (!strcmp(argv[1], "-V"))) display_version();
+ return 0;
+}
--- /dev/null
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <time.h>
+#include <utmp.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+/* examine and fix utmp entries. Note that the code for fixing entries
+ is not complete, and indeed does nothing at all at this time. No bug
+ reports, please, as I am still actively working on this. It is not
+ here for general use, but only so that I can ferret out any bugs that
+ exist on other peoples systems without having to log in to their systems
+ myself ;-) */
+
+
+int main (int argc, char **argv) {
+
+ FILE *ut; /* /var/run/utmp */
+ struct utmp uts; /* utmp record */
+ char user[UT_NAMESIZE + 1];
+ char host[17];
+ char ch;
+ int print_all = 0, list = 0, fix = 0;
+
+/* get options */
+ while ((ch = getopt(argc, argv, "laf")) != EOF)
+ switch (ch) {
+ case 'a':
+ print_all = 1;
+ break;
+ case 'l':
+ list = 1;
+ break;
+ case 'f':
+ fix = 1;
+ break;
+ }
+
+/* check argument options */
+ if ( (!list && !print_all && !fix)) {
+ fprintf(stderr, "You must specify a command line option:\n\tl = list\n\
+\tf = fix\n\ta = all (requires l or f)\n");
+ exit(1);
+ }
+
+
+ if (list) {
+ ut = fopen(UTMP_FILE, "r");
+ while (fread(&uts, sizeof(uts), 1, ut))
+ if (((uts.ut_type == USER_PROCESS) && (uts.ut_name[0] != '\000'))
+ || print_all) {
+ strncpy(user, uts.ut_user, UT_NAMESIZE);
+ user[UT_NAMESIZE]=0;
+ strncpy(host, uts.ut_host, 16);
+ host[16]=0;
+ printf("ut_type: %d\n", uts.ut_type);
+ printf("ut_pid: %d\n", uts.ut_pid);
+ printf("ut_line: %s\n", uts.ut_line);
+ printf("ut_id: %2s\n", uts.ut_id);
+ printf("ut_time: %d\n", uts.ut_time);
+ printf("ut_user: %s\n", user);
+ printf("ut_host: %s\n", host);
+ printf("ut_addr: %d\n\n", uts.ut_addr);
+ }
+ fclose(ut);
+ }
+
+
+ if (fix) {
+ ut = fopen(UTMP_FILE, "r");
+ while (fread(&uts, sizeof(uts), 1, ut))
+ if (((uts.ut_type == USER_PROCESS) && (uts.ut_name[0] != '\000'))
+ || print_all) {
+ /* Display entry in utmp */
+ strncpy(user, uts.ut_user, UT_NAMESIZE);
+ user[UT_NAMESIZE]=0;
+ strncpy(host, uts.ut_host, 16);
+ host[16]=0;
+ printf("ut_type: %d\n", uts.ut_type);
+ printf("ut_pid: %d\n", uts.ut_pid);
+ printf("ut_line: %s\n", uts.ut_line);
+ printf("ut_id: %s2\n", uts.ut_id);
+ printf("ut_time: %d\n", uts.ut_time);
+ printf("ut_user: %s\n", user);
+ printf("ut_host: %s\n", host);
+ printf("ut_addr: %d\n\n", uts.ut_addr);
+
+ printf("Modify this record? (y/N): "); fflush(stdout);
+ /* Ask if to delete or no */
+ if ((ch = getchar()) == 'y' || ch == 'Y') {
+ while (getchar() != '\n');
+ printf("Change ut_type? "); fflush(stdout);
+ if ((ch = getchar()) == 'y' || ch == 'Y') {
+ while (getchar() != '\n');
+ printf("INIT, LOGIN, USER, or DEAD_PROCESS? (I/L/U/D): ");
+ fflush(stdout);
+ ch = getchar();
+ switch (ch) {
+ case 'i':
+ case 'I':
+ uts.ut_type = INIT_PROCESS;
+ break;
+ case 'l':
+ case 'L':
+ uts.ut_type = LOGIN_PROCESS;
+ break;
+ case 'u':
+ case 'U':
+ uts.ut_type = USER_PROCESS;
+ break;
+ case 'd':
+ case 'D':
+ uts.ut_type = DEAD_PROCESS;
+ break;
+ default:
+ printf("Invalid choice: %c\n", ch);
+ }
+ if (ch != '\n') while ((ch = getchar()) != '\n');
+ }
+ if (ch != '\n') while ((ch = getchar()) != '\n');
+ printf("Change ut_id field? (y/N): "); fflush(stdout);
+ if ((ch = getchar()) == 'y' || ch == 'Y') {
+ while (getchar() != '\n');
+ printf("Please enter the two characters for ut_id: ");
+ fflush(stdout);
+ uts.ut_id[0] = getchar();
+ uts.ut_id[1] = getchar();
+ while ((ch = getchar()) != '\n');
+ }
+ if (ch != '\n') while ((ch = getchar()) != '\n');
+ printf("Change the ut_user field? (y/N): "); fflush(stdout);
+ if ((ch = getchar()) == 'y' || ch == 'Y') {
+ int i;
+ while (getchar() != '\n');
+ printf("Please enter the new ut_name, up to %c characters: ",
+ UT_NAMESIZE);
+ fflush(stdout);
+ for (i=0; i<UT_NAMESIZE; i++) {
+ ch = getchar();
+ uts.ut_user[i] = (ch != '\n') ? ch : i = UT_NAMESIZE, (char) 0;
+ }
+ }
+ if (ch != '\n') while ((ch = getchar()) != '\n');
+ printf("Change the ut_host field? (y/N): "); fflush(stdout);
+ if ((ch = getchar()) == 'y' || ch == 'Y') {
+ int i;
+ while (getchar() != '\n');
+ printf("Please enter the new ut_host, up to 16 characters: ");
+ fflush(stdout);
+ for (i=0; i<16; i++) {
+ ch = getchar();
+ uts.ut_user[i] = (ch != '\n') ? ch : i = 16, (char) 0;
+ }
+ if (ch != '\n') while ((ch = getchar()) != '\n');
+ }
+
+ /* Here go the changes...*/
+/* utmpname(UTMP_FILE);
+ setutent();
+ pututline(&uts);
+ endutent(); */
+/* But they don't work... */
+
+ }
+ if (ch != '\n') while ((ch = getchar()) != '\n');
+ /* here we should write the utmp entry */
+ }
+ fclose(ut);
+ }
+
+
+ return 0;
+
+
+}
--- /dev/null
+.\" This page Copyright (C) 1994 Henry Ware <al172@yfn.ysu.edu>
+.\" Distributed under the GPL, Copyleft 1994.
+.TH VMSTAT 8 "27 July 1994 " "Throatwobbler Ginkgo Labs" "Linux Administrator's Manual"
+.SH NAME
+vmstat \- Report virtual memory statistics
+.SH SYNOPSIS
+.ft B
+.B vmstat
+.RB [ "\-n" ]
+.RI [ delay " [ " count ]]
+.br
+.BR vmstat [ "\-V" ]
+.SH DESCRIPTION
+\fBvmstat\fP reports information about processes, memory, paging,
+block IO, traps, and cpu activity.
+
+The first report produced gives averages since the last reboot. Additional
+reports give information on a sampling period of length \fIdelay\fP.
+The process and memory reports are instantaneous in either case.
+
+.SS Options
+The \fB-n\fP switch causes the header to be displayed only once rather than periodically.
+.PP
+.I delay
+is the delay between updates in seconds. If no delay is specified,
+only one report is printed with the average values since boot.
+.PP
+.I count
+is the number of updates. If no count is specified and delay is
+defined, \fIcount\fP defaults to infinity.
+.PP
+The \fB-V\fP switch results in displaying version information.
+.PP
+.SH FIELD DESCRIPTIONS
+.SS
+.B "Procs"
+.nf
+r: The number of processes waiting for run time.
+b: The number of processes in uninterruptable sleep.
+w: The number of processes swapped out but otherwise runnable. This
+ field is calculated, but Linux never desperation swaps.
+.fi
+.PP
+.SS
+.B "Memory"
+.nf
+swpd: the amount of virtual memory used (kB).
+free: the amount of idle memory (kB).
+buff: the amount of memory used as buffers (kB).
+.fi
+.PP
+.SS
+.B "Swap"
+.nf
+si: Amount of memory swapped in from disk (kB/s).
+so: Amount of memory swapped to disk (kB/s).
+.fi
+.PP
+.SS
+.B "IO"
+.nf
+bi: Blocks sent to a block device (blocks/s).
+bo: Blocks received from a block device (blocks/s).
+.fi
+.PP
+.SS
+.B "System"
+.nf
+in: The number of interrupts per second, including the clock.
+cs: The number of context switches per second.
+.if
+.PP
+.SS
+.B "CPU "
+These are percentages of total CPU time.
+.nf
+us: user time
+sy: system time
+id: idle time
+.nf
+.SH NOTES
+.B "vmstat "
+does not require special permissions.
+.PP
+These reports are intended to help identify system bottlenecks. Linux
+.B "vmstat "
+does not count itself as a running process.
+.PP
+All linux blocks are currently 1k, except for CD-ROM blocks which are 2k.
+.PP
+.SH FILES
+.ta
+.nf
+/proc/meminfo
+/proc/stat
+/proc/*/stat
+.fi
+
+.SH "SEE ALSO"
+ps(1), top(1), free(1)
+.PP
+.SH BUGS
+Does not tabulate the block io per device or count the number of system calls.
+.SH AUTHOR
+Written by Henry Ware <al172@yfn.ysu.edu>.
--- /dev/null
+#define VERSION Version: 0.99, last modified 15 January 94: ALPHA
+#define PROGNAME "vmstat"
+/* Copyright 1994 by Henry Ware <al172@yfn.ysu.edu>. Copyleft same year. */
+/* This attempts to display virtual memory statistics.
+ vmstat does not need to be run as root.
+*/
+/* TODO etc.
+ * Count the system calls. How? I don't even know where to start.
+ * add more items- aim at Posix 1003.2 (1003.7?) compliance, if relevant (I.
+ don't think it is, but let me know.)
+ * sometimes d(inter)<d(ticks)!! This is not possible: inter is a sum of
+ positive numbers including ticks. But it happens. This doesn't seem to
+ affect things much, however.
+ * It would be interesting to see when the buffers avert a block io:
+ Like SysV4's "sar -b"... it might fit better here, with Linux's variable
+ buffer size.
+ * Ideally, blocks in & out would be counted in 1k increments, rather than
+ by block: this only makes a difference for CDs and is a problematic fix.
+*/
+/* PROCPS
+ This is part of the procps package maintained by Michael K. Johnson
+ <johnsonm@redhat.com>; report bugs to <acahalan@cs.uml.edu>.
+*/
+
+#include "proc/sysinfo.h"
+#include "proc/version.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include <assert.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/dir.h>
+#include <dirent.h>
+
+#define NDEBUG !DEBUG
+
+#define BUFFSIZE 4096
+#define FALSE 0
+#define TRUE 1
+
+static char buff[BUFFSIZE]; /* used in the procedures */
+
+typedef unsigned long jiff;
+
+
+/****************************************************************/
+
+
+static void usage(void) {
+ fprintf(stderr,"usage: %s [-V] [-n] [delay [count]]\n",PROGNAME);
+ fprintf(stderr," -V prints version.\n");
+ fprintf(stderr," -n causes the headers not to be reprinted regularly.\n");
+ fprintf(stderr," delay is the delay between updates in seconds. \n");
+ fprintf(stderr," count is the number of updates.\n");
+ exit(EXIT_FAILURE);
+}
+
+static void crash(char *filename) {
+ perror(filename);
+ exit(EXIT_FAILURE);
+}
+
+static int winhi(void) {
+ struct winsize win;
+ int rows = 24;
+
+ if (ioctl(1, TIOCGWINSZ, &win) != -1 && win.ws_row > 0)
+ rows = win.ws_row;
+
+ return rows;
+}
+
+
+static void showheader(void){
+ printf("%8s%28s%8s%12s%11s%12s\n",
+ "procs","memory","swap","io","system","cpu");
+ printf("%2s %2s %2s %6s %6s %6s %6s %3s %3s %5s %5s %4s %5s %3s %3s %3s\n",
+ "r","b","w","swpd","free","buff","cache","si","so","bi","bo",
+ "in","cs","us","sy","id");
+}
+
+static void getstat(jiff *cuse, jiff *cice, jiff *csys, jiff long *cide,
+ unsigned *pin, unsigned *pout, unsigned *s_in, unsigned *sout,
+ unsigned *itot, unsigned *i1, unsigned *ct) {
+ static int Stat;
+
+ if ((Stat=open("/proc/stat", O_RDONLY, 0)) != -1) {
+ char* b;
+ buff[BUFFSIZE-1] = 0; /* ensure null termination in buffer */
+ read(Stat,buff,BUFFSIZE-1);
+ close(Stat);
+ *itot = 0;
+ *i1 = 1; /* ensure assert below will fail if the sscanf bombs */
+ b = strstr(buff, "cpu ");
+ sscanf(b, "cpu %lu %lu %lu %lu", cuse, cice, csys, cide);
+ b = strstr(buff, "page ");
+ sscanf(b, "page %u %u", pin, pout);
+ b = strstr(buff, "swap ");
+ sscanf(b, "swap %u %u", s_in, sout);
+ b = strstr(buff, "intr ");
+ sscanf(b, "intr %u %u", itot, i1);
+ b = strstr(buff, "ctxt ");
+ sscanf(b, "ctxt %u", ct);
+ }
+ else {
+ crash("/proc/stat");
+ }
+}
+
+static void getrunners(unsigned int *running, unsigned int *blocked,
+ unsigned int *swapped) {
+ static struct direct *ent;
+ static char filename[80];
+ static int fd;
+ static unsigned size;
+ static char c;
+ DIR *proc;
+
+ *running=0;
+ *blocked=0;
+ *swapped=0;
+
+ if ((proc=opendir("/proc"))==NULL) crash("/proc");
+
+ while((ent=readdir(proc))) {
+ if (isdigit(ent->d_name[0])) { /*just to weed out the obvious junk*/
+ sprintf(filename, "/proc/%s/stat", ent->d_name);
+ if ((fd = open(filename, O_RDONLY, 0)) != -1) { /*this weeds the rest*/
+ read(fd,buff,BUFFSIZE-1);
+ sscanf(buff, "%*d %*s %c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u %*d %*d %*d %*d %*d %*d %*u %*u %*d %*u %u %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u\n",&c,&size);
+ close(fd);
+
+ if (c=='R') {
+ if (size>0) (*running)++;
+ else (*swapped)++;
+ }
+ else if (c=='D') {
+ if (size>0) (*blocked)++;
+ else (*swapped)++;
+ }
+ }
+ }
+ }
+ closedir(proc);
+
+#if 1
+ /* is this next line a good idea? It removes this thing which
+ uses (hopefully) little time, from the count of running processes */
+ (*running)--;
+#endif
+}
+
+
+
+
+int main(int argc, char *argv[]) {
+
+ const char format[]="%2u %2u %2u %6u %6u %6u %6u %3u %3u %5u %5u %4u %5u %3u %3u %3u\n";
+ unsigned int height=22; /* window height, reset later if needed. */
+#if 0
+ unsigned long int args[2]={0,0};
+#endif
+ unsigned int moreheaders=TRUE;
+ unsigned int tog=0; /* toggle switch for cleaner code */
+ unsigned int i,hz;
+ unsigned int running,blocked,swapped;
+ jiff cpu_use[2], cpu_nic[2], cpu_sys[2], cpu_idl[2];
+ jiff duse,dsys,didl,Div,divo2;
+ unsigned int pgpgin[2], pgpgout[2], pswpin[2], pswpout[2];
+ unsigned int inter[2],ticks[2],ctxt[2];
+ unsigned int per=0, pero2;
+ unsigned long num=0;
+ unsigned int kb_per_page = sysconf(_SC_PAGESIZE) / 1024;
+
+ setlinebuf(stdout);
+ argc=0; /* redefined as number of integer arguments */
+ per=1;
+ num=0;
+ for (argv++;*argv;argv++) {
+ if ('-' ==(**argv)) {
+ switch (*(++(*argv))) {
+ case 'V':
+ display_version();
+ exit(0);
+ case 'n':
+ /* print only one header */
+ moreheaders=FALSE;
+ break;
+ default:
+ /* no other aguments defined yet. */
+ usage();
+ }
+ } else {
+ argc++;
+ switch (argc) {
+ case 1:
+ if ((per = atoi(*argv)) == 0)
+ usage();
+ num = ULONG_MAX;
+ break;
+ case 2:
+ num = atol(*argv);
+ break;
+ default:
+ usage();
+ } /* switch */
+ }
+ }
+
+ if (moreheaders) {
+ int tmp=winhi()-3;
+ height=((tmp>0)?tmp:22);
+ }
+
+ pero2=(per/2);
+ showheader();
+ getrunners(&running,&blocked,&swapped);
+ meminfo();
+ getstat(cpu_use,cpu_nic,cpu_sys,cpu_idl,
+ pgpgin,pgpgout,pswpin,pswpout,
+ inter,ticks,ctxt);
+ duse= *cpu_use + *cpu_nic;
+ dsys= *cpu_sys;
+ didl= *cpu_idl;
+ Div= duse+dsys+didl;
+ hz=sysconf(_SC_CLK_TCK); /* get ticks/s from system */
+ divo2= Div/2UL;
+ printf(format,
+ running,blocked,swapped,
+ kb_swap_used,kb_main_free,kb_main_buffers,kb_main_cached,
+ (*pswpin *kb_per_page*hz+divo2)/Div,
+ (*pswpout*kb_per_page*hz+divo2)/Div,
+ (*pgpgin *hz+divo2)/Div,
+ (*pgpgout *hz+divo2)/Div,
+ (*inter *hz+divo2)/Div,
+ (*ctxt *hz+divo2)/Div,
+ (100*duse+divo2)/Div,
+ (100*dsys+divo2)/Div,
+ (100*didl+divo2)/Div
+ );
+
+ for(i=1;i<num;i++) { /* \\\\\\\\\\\\\\\\\\\\ main loop ////////////////// */
+ sleep(per);
+ if (moreheaders && ((i%height)==0)) showheader();
+ tog= !tog;
+ getrunners(&running,&blocked,&swapped);
+ meminfo();
+ getstat(cpu_use+tog,cpu_nic+tog,cpu_sys+tog,cpu_idl+tog,
+ pgpgin+tog,pgpgout+tog,pswpin+tog,pswpout+tog,
+ inter+tog,ticks+tog,ctxt+tog);
+ duse= cpu_use[tog]-cpu_use[!tog] + cpu_nic[tog]-cpu_nic[!tog];
+ dsys= cpu_sys[tog]-cpu_sys[!tog];
+ didl= cpu_idl[tog]-cpu_idl[!tog];
+ /* idle can run backwards for a moment -- kernel "feature" */
+ if(cpu_idl[tog]<cpu_idl[!tog]) didl=0;
+ Div= duse+dsys+didl;
+ divo2= Div/2UL;
+ printf(format,
+ running,blocked,swapped,
+ kb_swap_used,kb_main_free,kb_main_buffers,kb_main_cached,
+ ( (pswpin [tog]-pswpin [!tog])*kb_per_page+pero2 )/per,
+ ( (pswpout[tog]-pswpout[!tog])*kb_per_page+pero2 )/per,
+ ( pgpgin [tog]-pgpgin [!tog] +pero2 )/per,
+ ( pgpgout[tog]-pgpgout[!tog] +pero2 )/per,
+ (inter[tog]-inter[!tog]+pero2)/per,
+ (ctxt[tog]-ctxt[!tog]+pero2)/per,
+ (100*duse+divo2)/Div,
+ (100*dsys+divo2)/Div,
+ (100*didl+divo2)/Div
+ );
+ }
+ exit(EXIT_SUCCESS);
+}
--- /dev/null
+.\" -*-Nroff-*-
+.\"
+.TH W 1 "8 Dec 1993 " " " "Linux User's Manual"
+.SH NAME
+w \- Show who is logged on and what they are doing.
+.SH SYNOPSIS
+.B w \-
+.RB [ husfV ]
+.RI [ user ]
+.SH DESCRIPTION
+.B "w "
+displays information about the users currently on the machine,
+and their processes.
+The header shows, in this order, the current time,
+how long the system has been running,
+how many users are currently logged on,
+and the system load averages for the past 1, 5, and 15 minutes.
+.sp
+The following entries are displayed for each user:
+login name, the tty name, the remote host, login time, idle time, JCPU, PCPU,
+and the command line of their current process.
+.sp
+The JCPU time is the time used by all processes attached to the tty. It
+does not include past background jobs, but does include currently
+running background jobs.
+.sp
+The PCPU time is the time used by the current process, named in the "what"
+field.
+
+.PP
+.SH "COMMAND\-LINE OPTIONS"
+.TP 0.5i
+.B "\-h "
+Don't print the header.
+.TP 0.5i
+.B "\-u "
+Ignores the username while figuring out the current process and cpu
+times. To demonstrate this, do a "su" and do a "w" and a "w -u".
+.TP 0.5i
+.B "\-s "
+Use the short format.
+Don't print the login time, JCPU or PCPU times.
+.TP 0.5i
+.B "\-f "
+Toggle printing the
+.B from
+(remote hostname) field. The default as
+released is for the
+.B from
+field to not be printed, although your system administrator or
+distribution maintainer may have compiled a version in which the
+.B from
+field is shown by default.
+.TP 0.5i
+.B "\-V "
+Display version information.
+.TP 0.5i
+.B "user "
+Show information about the specified user only.
+
+.SH FILES
+.TP
+.I /etc/utmp
+information about who is currently logged on
+.TP
+.I /proc
+process information
+.PP
+
+.SH "SEE ALSO"
+.BR free (1),
+.BR ps (1),
+.BR top (1),
+.BR uptime (1),
+.BR utmp (5),
+.BR who (1)
+
+.SH AUTHORS
+.B w
+was re-written almost entirely by Charles Blake, based on the version by Larry
+Greenfield <greenfie@gauss.rutgers.edu> and Michael K. Johnson
+<johnsonm@redhat.com>.
+
+Please send bug reports to <acahalan@cs.uml.edu>
--- /dev/null
+/* w - show what logged in users are doing. Almost entirely rewritten from
+ * scratch by Charles Blake circa June 1996. Some vestigal traces of the
+ * original may exist. That was done in 1993 by Larry Greenfield with some
+ * fixes by Michael K. Johnson.
+ */
+#include "proc/version.h"
+#include "proc/whattime.h"
+#include "proc/readproc.h"
+#include "proc/devname.h"
+#include "proc/procps.h"
+#include "proc/sysinfo.h"
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <pwd.h>
+#include <time.h>
+#include <unistd.h>
+#include <utmp.h>
+/* #include <sys/param.h>*/ /* for HZ */
+
+static int ignoreuser = 0; /* for '-u' */
+static proc_t **procs; /* our snapshot of the process table */
+
+typedef struct utmp utmp_t;
+
+#ifdef W_SHOWFROM
+# define FROM_STRING "on"
+#else
+# define FROM_STRING "off"
+#endif
+
+/* Uh... same thing as UT_NAMESIZE */
+#define USERSZ (sizeof u->ut_user)
+
+
+/* This routine is careful since some programs leave utmp strings
+ * unprintable. Always outputs at least 16 chars padded with spaces
+ * on the right if necessary.
+ */
+static void print_host(char* host, int len) {
+ char *last;
+ int width = 0;
+
+ /* FIXME: there should really be a way to configure this... */
+ /* for now, we'll just limit it to the 16 that the libc5 version
+ * of utmp uses.
+ */
+ if (len > 16) len = 16;
+ last = host + len;
+ for ( ; host < last ; host++){
+ if (isprint(*host) && *host != ' ') {
+ fputc(*host, stdout);
+ ++width;
+ } else {
+ break;
+ }
+ }
+ if(!width){ /* blank fields screw up parsers */
+ fputc('-', stdout);
+ ++width;
+ }
+ /* if *any* unprintables(or blanks), replace rest of line with spaces */
+ while (width < 16) {
+ fputc(' ', stdout);
+ ++width;
+ }
+}
+
+/***** compact 7 char format for time intervals (belongs in libproc?) */
+static void print_time_ival7(time_t t, int centi_sec, FILE* fout) {
+ if((long)t < (long)0){ /* system clock changed? */
+ printf(" ? ");
+ return;
+ }
+ if (t >= 48*60*60) /* > 2 days */
+ fprintf(fout, " %2ludays", t/(24*60*60));
+ else if (t >= 60*60) /* > 1 hour */
+ fprintf(fout, " %2lu:%02um", t/(60*60), (unsigned) ((t/60)%60));
+ else if (t > 60) /* > 1 minute */
+ fprintf(fout, " %2lu:%02u ", t/60, (unsigned) t%60);
+ else
+ fprintf(fout, " %2lu.%02us", t, centi_sec);
+}
+
+/**** stat the device file to get an idle time */
+static time_t idletime(char *tty) {
+ struct stat sbuf;
+ if (stat(tty, &sbuf) != 0)
+ return 0;
+ return time(NULL) - sbuf.st_atime;
+}
+
+/***** 7 character formatted login time */
+static void print_logintime(time_t logt, FILE* fout) {
+ char *weekday[] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" },
+ *month [] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
+ "Aug", "Sep", "Oct", "Nov", "Dec" };
+ time_t curt;
+ struct tm *logtm, *curtm;
+ int hour;
+ char *merid; /* meridian indicator */
+ int today;
+
+ curt = time(NULL);
+ curtm = localtime(&curt);
+ /* localtime returns a pointer to static memory */
+ today = curtm->tm_yday;
+ logtm = localtime(&logt);
+ hour = logtm->tm_hour;
+ merid = (hour < 12) ? "am" : "pm";
+ if (hour >= 12) hour -= 12;
+ if (hour == 0) hour = 12;
+ if (curt - logt > 12*60*60 && logtm->tm_yday != today) {
+ if (curt - logt > 6*24*60*60)
+ fprintf(fout, " %02d%3s%02d", logtm->tm_mday, month[logtm->tm_mon],
+ logtm->tm_year % 100);
+ else
+ fprintf(fout, " %3s%02d%s", weekday[logtm->tm_wday], hour, merid);
+ } else {
+ fprintf(fout, " %02d:%02d%s", hour, logtm->tm_min, merid);
+ }
+}
+
+
+/* This function scans the process table accumulating total cpu times for
+ * any processes "associated" with this login session. It also searches
+ * for the "best" process to report as "(w)hat" the user for that login
+ * session is doing currently. This the essential core of 'w'.
+ */
+static proc_t *getproc(utmp_t *u, char *tty, int *jcpu, int *found_utpid) {
+ int line;
+ proc_t **p, *best = NULL, *secondbest = NULL;
+ unsigned uid = ~0U;
+
+ if(!ignoreuser){
+ char buf[UT_NAMESIZE+1];
+ struct passwd *passwd_data; /* pointer to static data */
+ strncpy(buf,u->ut_user,UT_NAMESIZE);
+ buf[UT_NAMESIZE] = '\0';
+ passwd_data = getpwnam(buf);
+ if(!passwd_data) return NULL;
+ uid = passwd_data->pw_uid;
+ /* OK to have passwd_data go out of scope here */
+ }
+ line = tty_to_dev(tty);
+ *jcpu = *found_utpid = 0;
+ for(p = procs; *p; p++) {
+ if((**p).pid == u->ut_pid) *found_utpid = 1;
+ if((**p).tty != line) continue;
+ (*jcpu) += (**p).utime + (**p).stime;
+ secondbest = *p;
+ /* same time-logic here as for "best" below */
+ if(! (secondbest && (**p).start_time <= secondbest->start_time) ){
+ secondbest = *p;
+ }
+ if(!ignoreuser && uid != (**p).euid && uid != (**p).ruid) continue;
+ if((**p).pid != (**p).tpgid) continue;
+ if(best && (**p).start_time <= best->start_time) continue;
+ best = *p;
+ }
+ return best ? best : secondbest;
+}
+
+
+/***** showinfo */
+static void showinfo(utmp_t *u, int formtype, int maxcmd, int from) {
+ int jcpu, ut_pid_found;
+ unsigned i;
+ char uname[USERSZ + 1] = "",
+ tty[5 + sizeof u->ut_line + 1] = "/dev/";
+ proc_t *best;
+
+ for (i=0; i < sizeof(u->ut_line); i++) /* clean up tty if garbled */
+ if (isalnum(u->ut_line[i]) || (u->ut_line[i]=='/'))
+ tty[i+5] = u->ut_line[i];
+ else
+ tty[i+5] = '\0';
+
+ best = getproc(u, tty + 5, &jcpu, &ut_pid_found);
+
+ /* just skip if stale utmp entry (i.e. login proc doesn't exist). If there
+ * is a desire a cmdline flag could be added to optionally show it with a
+ * prefix of (stale) in front of cmd or something like that.
+ */
+ if (!ut_pid_found)
+ return;
+
+ strncpy(uname, u->ut_user, USERSZ); /* force NUL term for printf */
+ if (formtype) {
+ printf("%-9.8s%-9.8s", uname, u->ut_line);
+ if (from)
+ print_host(u->ut_host, sizeof u->ut_host);
+ print_logintime(u->ut_time, stdout);
+ if (*u->ut_line == ':') /* idle unknown for xdm logins */
+ printf(" ?xdm? ");
+ else
+ print_time_ival7(idletime(tty), 0, stdout);
+ print_time_ival7(jcpu/Hertz, (jcpu%Hertz)*(100./Hertz), stdout);
+ if (best) {
+ int pcpu = best->utime + best->stime;
+ print_time_ival7(pcpu/Hertz, (pcpu%Hertz)*(100./Hertz), stdout);
+ } else
+ printf(" ? ");
+ } else {
+ printf("%-9.8s%-9.8s", u->ut_user, u->ut_line);
+ if (from)
+ print_host(u->ut_host, sizeof u->ut_host);
+ if (*u->ut_line == ':') /* idle unknown for xdm logins */
+ printf(" ?xdm? ");
+ else
+ print_time_ival7(idletime(tty), 0, stdout);
+ }
+ fputs(" ", stdout);
+ if (best) {
+ if (best->cmdline)
+ print_strlist(stdout, best->cmdline, " ", maxcmd);
+ else
+ printf("%*.*s", -maxcmd, maxcmd, best->cmd);
+ } else {
+ printf("-");
+ }
+ fputc('\n', stdout);
+}
+
+/***** main */
+int main(int argc, char **argv) {
+ char *user = NULL;
+ utmp_t *u;
+ struct winsize win;
+ int header=1, longform=1, from=1, args, maxcmd=80, ch;
+
+#ifndef W_SHOWFROM
+ from = 0;
+#endif
+
+ for (args=0; (ch = getopt(argc, argv, "hlusfV")) != EOF; args++)
+ switch (ch) {
+ case 'h': header = 0; break;
+ case 'l': longform = 1; break;
+ case 's': longform = 0; break;
+ case 'f': from = !from; break;
+ case 'V': display_version(); exit(0);
+ case 'u': ignoreuser = 1; break;
+ default:
+ printf("usage: w -hlsufV [user]\n"
+ " -h skip header\n"
+ " -l long listing (default)\n"
+ " -s short listing\n"
+ " -u ignore uid of processes\n"
+ " -f toggle FROM field (default %s)\n"
+ " -V display version\n", FROM_STRING);
+ exit(1);
+ }
+
+ if ((argv[optind]))
+ user = (argv[optind]);
+
+ if (ioctl(1, TIOCGWINSZ, &win) != -1 && win.ws_col > 0)
+ maxcmd = win.ws_col;
+ if (maxcmd < 71) {
+ fprintf(stderr, "%d column window is too narrow\n", maxcmd);
+ exit(1);
+ }
+ maxcmd -= 29 + (from ? 16 : 0) + (longform ? 20 : 0);
+ if (maxcmd < 3)
+ fprintf(stderr, "warning: screen width %d suboptimal.\n", win.ws_col);
+
+ procs = readproctab(PROC_FILLCMD | PROC_FILLUSR);
+
+ if (header) { /* print uptime and headers */
+ print_uptime();
+ printf("USER TTY ");
+ if (from)
+ printf("FROM ");
+ if (longform)
+ printf(" LOGIN@ IDLE JCPU PCPU WHAT\n");
+ else
+ printf(" IDLE WHAT\n");
+ }
+
+ utmpname(UTMP_FILE);
+ setutent();
+ while ((u=getutent())) {
+ if (u->ut_type == USER_PROCESS &&
+ (user ? !strncmp(u->ut_user, user, USERSZ) : *u->ut_user))
+ showinfo(u, longform, maxcmd, from);
+ }
+ endutent();
+
+ return 0;
+}
--- /dev/null
+.TH WATCH 1 "1999 Apr 3" " " "Linux User's Manual"
+.SH NAME
+watch \- execute a program periodically, showing output fullscreen
+.SH SYNOPSIS
+.B watch
+.I [\-dhv] [\-n <seconds>] [\-\-differences[=cumulative]] [\-\-help] [\-\-interval=<seconds>] [\-\-version] <command>
+.SH DESCRIPTION
+.BR watch
+runs
+.I command
+repeatedly, displaying its output (the first screenfull). This allows you to
+watch the program output change over time. By default, the program is run
+every 2 seconds; use
+.I -n
+or
+.I --interval
+to specify a different interval.
+.PP
+The
+.I -d
+or
+.I --differences
+flag will highlight the differences between successive updates. The
+.I --cumulative
+option makes highlighting "sticky", presenting a running display of all
+positions that have ever changed.
+.PP
+.BR watch
+will run until interrupted.
+.SH NOTE
+Note that
+.I command
+is given to "sh -c"
+which means that you may need to use extra quoting to get the desired effect.
+.PP
+Note that POSIX option processing is used (i.e., option processing stops at
+the first non-option argument). This means that flags after
+.I command
+don't get interpreted by
+.BR watch
+itself.
+.SH EXAMPLES
+.PP
+To watch for mail, you might do
+.IP
+watch \-n 60 from
+.PP
+To watch the contents of a directory change, you could use
+.IP
+watch \-d ls \-l
+.PP
+If you're only interested in files owned by user joe, you might use
+.IP
+watch \-d 'ls \-l | fgrep joe'
+.PP
+To see the effects of quoting, try these out
+.IP
+watch echo $$
+.IP
+watch echo '$$'
+.IP
+watch echo "'"'$$'"'"
+.PP
+You can watch for your administrator to install the latest kernel with
+.IP
+watch uname -r
+.PP
+(Just kidding.)
+.SH BUGS
+Upon terminal resize, the screen will not be correctly repainted until the
+next scheduled update. All
+.I --differences
+highlighting is lost on that update as well.
+.PP
+Non-printing characters are stripped from program output. Use "cat -v" as
+part of the command pipeline if you want to see them.
+.SH AUTHORS
+The original
+.B watch
+was written by Tony Rems <rembo@unisoft.com> in 1991, with mods and
+corrections by Francois Pinard. It was reworked and new features added by
+Mike Coleman <mkc@acm.org> in 1999.
--- /dev/null
+/* watch -- execute a program repeatedly, displaying output fullscreen
+ *
+ * Based on the original 1991 'watch' by Tony Rems <rembo@unisoft.com>
+ * (with mods and corrections by Francois Pinard).
+ *
+ * Substantially reworked, new features (differences option, SIGWINCH
+ * handling, unlimited command length, long line handling) added Apr 1999 by
+ * Mike Coleman <mkc@acm.org>.
+ */
+
+
+#define VERSION "0.2.0"
+
+#include <ctype.h>
+#include <getopt.h>
+#include <signal.h>
+#include <ncurses.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <time.h>
+#include <unistd.h>
+
+
+static struct option longopts[] =
+ {
+ { "differences", optional_argument, 0, 'd' },
+ { "help", no_argument, 0, 'h' },
+ { "interval", required_argument, 0, 'n' },
+ { "version", no_argument, 0, 'v' },
+ { 0, 0, 0, 0 }
+ };
+
+static char usage[] = "Usage: %s [-dhnv] [--differences[=cumulative]] [--help] [--interval=<n>] [--version] <command>\n";
+
+
+static char *progname;
+
+static int curses_started = 0;
+static int height=24, width=80;
+static int screen_size_changed=0;
+static int first_screen=1;
+
+
+#define min(x,y) ((x) > (y) ? (y) : (x))
+#define max(x,y) ((x) > (y) ? (x) : (y))
+
+
+static void
+do_usage(void)
+{
+ fprintf(stderr, usage, progname);
+ exit(1);
+}
+
+
+static void
+do_exit(int status) {
+ if (curses_started)
+ endwin();
+ exit(status);
+}
+
+
+/* signal handler */
+static void
+die(int notused)
+{
+ (void)notused;
+ do_exit(0);
+}
+
+
+static void
+winch_handler(int notused)
+{
+ (void)notused;
+ screen_size_changed = 1;
+}
+
+
+static void
+get_terminal_size(void)
+{
+ struct winsize w;
+ if (ioctl(2, TIOCGWINSZ, &w) == 0)
+ {
+ if (w.ws_row > 0)
+ height = w.ws_row;
+ if (w.ws_col > 0)
+ width = w.ws_col;
+ }
+}
+
+
+int
+main(int argc, char *argv[])
+{
+ int optc;
+ int option_differences=0,
+ option_differences_cumulative=0,
+ option_help=0,
+ option_version=0;
+ int interval=2;
+ char *command;
+ int command_length=0; /* not including final \0 */
+
+ progname = argv[0];
+
+ while ((optc = getopt_long(argc, argv, "+d::hn:v", longopts, (int *) 0))
+ != EOF)
+ {
+ switch (optc)
+ {
+ case 'd':
+ option_differences = 1;
+ if (optarg)
+ option_differences_cumulative = 1;
+ break;
+ case 'h':
+ option_help = 1;
+ break;
+ case 'n':
+ {
+ char *s;
+ interval = strtol(optarg, &s, 10);
+ if (!*optarg || *s)
+ do_usage();
+ }
+ break;
+ case 'v':
+ option_version = 1;
+ break;
+ default:
+ do_usage();
+ break;
+ }
+ }
+
+ if (option_version)
+ {
+ fprintf (stderr, "%s\n", VERSION);
+ if (!option_help)
+ exit(0);
+ }
+
+ if (option_help)
+ {
+ fprintf(stderr, usage, progname);
+ fputs(" -d, --differences[=cumulative]\thighlight changes between updates\n", stderr);
+ fputs("\t\t(cumulative means highlighting is cumulative)\n", stderr);
+ fputs(" -h, --help\t\t\t\tprint a summary of the options\n", stderr);
+ fputs(" -n, --interval=<seconds>\t\tseconds to wait between updates\n", stderr);
+ fputs(" -v, --version\t\t\t\tprint the version number\n", stderr);
+ exit(0);
+ }
+
+ if (optind >= argc)
+ do_usage();
+
+ command = strdup(argv[optind++]);
+ command_length = strlen(command);
+ for (;optind<argc;optind++)
+ {
+ int s = strlen(argv[optind]);
+ char *endp = &command[command_length];
+ *endp = ' ';
+ command_length += s + 1;
+ command = realloc(command, command_length+1);
+ strcpy(endp+1, argv[optind]);
+ }
+
+ get_terminal_size();
+
+ /* Catch keyboard interrupts so we can put tty back in a sane state. */
+ signal(SIGINT, die);
+ signal(SIGTERM, die);
+ signal(SIGHUP, die);
+ signal(SIGWINCH, winch_handler);
+
+ /* Set up tty for curses use. */
+ curses_started = 1;
+ initscr();
+ nonl();
+ noecho();
+ cbreak();
+
+ for(;;)
+ {
+ time_t t = time(NULL);
+ char *ts = ctime(&t);
+ int tsl = strlen(ts);
+ char *header;
+ FILE *p;
+ int x, y;
+
+ if (screen_size_changed)
+ {
+ get_terminal_size();
+ resizeterm(height, width);
+ clear();
+ /* redrawwin(stdscr); */
+ screen_size_changed = 0;
+ first_screen = 1;
+ }
+
+ /* left justify interval and command, right justify time, clipping all
+ to fit window width */
+ asprintf(&header, "Every %ds: %.*s",
+ interval, max(width-1, command_length), command);
+ mvaddstr(0, 0, header);
+ if (strlen(header) > width - tsl - 1)
+ mvaddstr(0, width - tsl - 4, "... ");
+ mvaddstr(0, width - tsl + 1, ts);
+ free(header);
+
+ if (!(p = popen(command, "r")))
+ {
+ perror("popen");
+ do_exit(2);
+ }
+
+ for (y=2; y<height; y++)
+ {
+ int eolseen = 0, tabpending = 0;
+ for (x=0; x<width; x++)
+ {
+ int c = ' ';
+ int attr = 0;
+
+ if (!eolseen)
+ {
+ /* if there is a tab pending, just spit spaces until the
+ next stop instead of reading characters */
+ if (!tabpending)
+ do
+ c = getc(p);
+ while (c != EOF && !isprint(c) && c != '\n' && c != '\t');
+ if (c == '\n')
+ eolseen = 1;
+ else if (c == '\t')
+ tabpending = 1;
+ if (c == EOF || c == '\n' || c == '\t')
+ c = ' ';
+ if (tabpending && (((x + 1) % 8) == 0))
+ tabpending = 0;
+ }
+ move(y, x);
+ if (option_differences)
+ {
+ int oldch = inch();
+ char oldc = oldch & A_CHARTEXT;
+ attr = !first_screen
+ && (c != oldc
+ || (option_differences_cumulative
+ && (oldch & A_ATTRIBUTES)));
+ }
+ if (attr)
+ standout();
+ addch(c);
+ if (attr)
+ standend();
+ }
+ }
+
+ pclose(p);
+
+ first_screen = 0;
+ refresh();
+ sleep(interval);
+ }
+
+ endwin();
+
+ return 0;
+}
projects / procps-ng / commitdiff