btrfs: provide fallback definitions for BTRFS_IOC_QUOTA_RESCAN*

<linux/btrfs.h> was introduced in linux v3.9-rc1 while some
of btrfs ioctls were added later, e.g. BTRFS_IOC_QUOTA_RESCAN
and BTRFS_IOC_QUOTA_RESCAN_STATUS in v3.10-rc2,
or BTRFS_IOC_QUOTA_RESCAN_WAIT in v3.11-rc1.

* btrfs.c [!BTRFS_IOC_QUOTA_RESCAN]
(struct btrfs_ioctl_quota_rescan_args): New structure.
(BTRFS_IOC_QUOTA_RESCAN, BTRFS_IOC_QUOTA_RESCAN_STATUS): New macros.
[!BTRFS_IOC_QUOTA_RESCAN_WAIT] (BTRFS_IOC_QUOTA_RESCAN_WAIT): New macro.
* tests/btrfs.c: Likewise.

Reported-by: Li Er <phoooyb@gmail.com>

configure.ac: fix checks for btrfs specific structures

* configure.ac (AC_CHECK_MEMBERS): Fix typo in the check for
struct btrfs_ioctl_defrag_range_args.start and
struct btrfs_ioctl_search_args_v2.buf_size.

README: add system requirements and beautify the file

tests: add signal_receive.test

* tests/signal_receive.c: New file.
* tests/signal_receive.test: New test.
* tests/.gitignore: Add signal_receive.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(MISC_TESTS): Add signal_receive.test.

tests: add signal2name function to libtests

* tests/tests.h (signal2name): New prototype.
* tests/signal2name.c: New file.
* tests/Makefile.am (libtests_a_SOURCES): Add it.

net.c: use AF_INET6 unconditionally

* net.c (SYS_FUNC(socket)): Do not check for AF_INET6 availability.

configure.ac: do not check for linux/in6.h

The last user of <linux/in6.h> was removed by commit v4.9-252-gf362a33.

* configure.ac (AC_CHECK_HEADERS): Remove linux/in6.h.

net.c: use AF_PACKET unconditionally

* net.c: Do not check for AF_PACKET availability.

net.c: include <linux/if_packet.h> unconditionally

* configure.ac (AC_CHECK_HEADERS): Remove linux/if_packet.h.
* net.c: Include <linux/if_packet.h> unconditionally.

net.c: use ICMP_FILTER unconditionally

* net.c: Do not check for ICMP_FILTER availability.

net.c: include <linux/icmp.h> unconditionally

* configure.ac (AC_CHECK_HEADERS): Remove linux/icmp.h.
* net.c: Follow the example of tests/net-icmp_filter.c and include
<linux/icmp.h> unconditionally.

net.c: use AF_NETLINK unconditionally

* net.c: Do not check for AF_NETLINK availability.

net.c: include <linux/netlink.h> unconditionally

* configure.ac (AC_CHECK_HEADERS): Remove linux/netlink.h.
* net.c: Follow the example of socketutils.c and include
<linux/netlink.h> unconditionally.

Remove UNDEFINED_SCNO

Since UNDEFINED_SCNO is set if and only if !SCNO_IS_VALID
and since tcp->s_ent can only be set to &sysent[tcp->scno]
(or to &unknown, but only when !SCNO_IS_VALID), there is no need
to check for UNDEFINED_SCNO before calling syscall_name(tcp->scno).

* defs.h (UNDEFINED_SCNO): Remove.
* syscall.c (get_scno, trace_syscall_entering, trace_syscall_exiting):
Remove checks for UNDEFINED_SCNO.

tests/attach-f-p.c: fix typo in comment

strace.c: fix style in function definition

* strace.c (kill_save_errno): Move the type of return value
to another line.

Turn on more compiler warnings

* configure.ac (gl_WARN_ADD): Add -Wempty-body, -Wformat-security,
-Wignored-qualifiers, -Winit-self, -Wlogical-op,
-Wmissing-parameter-type, -Wnested-externs, -Wold-style-declaration,
-Wold-style-definition, -Wtype-limits.

strace.c: fix a warning reported by -Wold-style-definition

* strace.c (usage): Add void to the list of function argments.

tests/ioctl_evdev.c: fix typo in comment

Move printargs* functions to util.c

* syscall.c (printargs, printargs_u, printargs_d): Move ...
* util.c: ... here.

tests/xgetrlimit.c: fix a warning reported by -Wtype-limits

* tests/xgetrlimit.c (sprint_rlim): Explicitly cast constants
to the type of argument.

Consistently use printaddr for printing addresses

* bjm.c (SYS_FUNC(init_module)): Use printaddr.
* clone.c (SYS_FUNC(clone)): Likewise.
* evdev.c (ff_effect_ioctl): Likewise.
* mtd.c (decode_mtd_oob_buf): Likewise.
* net.c (SYS_FUNC(sendmmsg), SYS_FUNC(recvmmsg), SYS_FUNC(getsockopt)):
Likewise.
* print_sigevent.c (print_sigevent): Likewise.
* printsiginfo.c (printsigval, print_si_info): Likewise.
* signal.c (decode_new_sigaction): Likewise.
* sysmips.c (SYS_FUNC(sysmips)): Likewise.
* util.c (printpathn, printstr, umoven_or_printaddr): Likewise.
* v4l2.c (print_v4l2_buffer, print_v4l2_framebuffer,
umoven_or_printaddr_ignore_syserror): Likewise.
* tests/net-icmp_filter.c (main): Update.

Based on patch by Eugene Syromyatnikov <evgsyr@gmail.com>.

tests/attach-p-cmd-p.c: cleanup

* attach-p-cmd-p.c (handler): Move code ...
(main): ... here.  Unblock SIGALRM only.
Use alarm() instead of setitimer().
Replace endless loop with a pause() call.
Check that chdir() returns ENOENT.

tests: enhance test coverage of SIGCHLD siginfo_t

* tests/siginfo.c: New file.
* tests/siginfo.test: New test.
* tests/wait.c: Remove.
* tests/wait.expected: Remove.
* tests/wait.test: Remove.
* tests/.gitignore: Add siginfo, remove wait.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add siginfo.test, remove wait.test.
(EXTRA_DIST): Remove wait.expected.

tests: extend test coverage of waitid syscall

* tests/waitid.c: New file.
* tests/waitid-v.c: Likewise.
* tests/waitid.test: New test.
* tests/waitid-v.test: Likewise.
* tests/.gitignore: Add waitid and waitid-v.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add waitid.test and waitid-v.test.

tests: extend test coverage of wait4 syscall

* tests/wait4.c: New file.
* tests/wait4-v.c: Likewise.
* tests/wait4.test: New test.
* tests/wait4-v.test: Likewise.
* tests/.gitignore: Add wait4 and wait4-v.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add wait4.test and wait4-v.test.

tests: add widen_to_ull macro to tests.h

* tests.h (widen_to_ull): New macro, copied from defs.h

Fix sign extension issues in the parser of struct rusage

* printrusage.c (printrusage): Do not cast members of struct rusage
to type long, use widen_to_ull instead.

tests: check decoding of waitpid syscall

* tests/waitpid.c: New file.
* tests/waitpid.test: New test.
* tests/.gitignore: Add waitpid.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add waitpid.test.

tests: add strace-E.test

* tests/strace-E.expected: New file.
* tests/strace-E.test: New test.
* tests/Makefile.am (MISC_TESTS): Add it.
(EXTRA_DIST): Add strace-E.expected.

strace.spec.in: enable libunwind on more platforms

* strace.spec.in: Add libunwind-devel to BuildRequires for RHEL8 family.

make-dist: generate strace-*.tar.gz, strace.dsc, and strace.spec

Change make-dist to generate strace-*.tar.gz, strace.dsc,
and strace.spec in addition to strace-*.tar.xz.

* configure.ac (AM_INIT_AUTOMAKE): Remove no-dist-gzip.
* make-dsc: New file.
* make-dist: Use it.
* .gitignore: Add strace-*.tar.gz, strace.dsc, and strace.spec.

Parametrize debian/changelog

* configure.ac (CHANGELOGTIME): Rename to RPM_CHANGELOGTIME.
(DEB_CHANGELOGTIME): New variable.
(AC_CONFIG_FILES): Add debian/changelog.
* strace.spec.in: Rename CHANGELOGTIME to RPM_CHANGELOGTIME.
* debian/changelog: Rename to ...
* debian/changelog.in: ... this file.  Add parametrized entry.
* debian/.gitignore: New file.

git-version-gen: replace '-' with '.' in generated version

* git-version-gen: Replace '-' with '.' so version conforms to policies
* configure.ac (SPEC_VERSION): Remove.
* strace.spec.in: Replace SPEC_VERSION with PACKAGE_VERSION.
Remove %srcname.

Parametrize strace.spec

* configure.ac (SPEC_VERSION, CHANGELOGTIME): Define.
(AC_CONFIG_FILES): Add strace.spec.
* strace.spec: Rename to ...
* strace.spec.in: ... this file.  Parametrize Version, srcname,
and the last %changelog entry.  Initialize .tarball-version file.

strace.spec: adopt for OBS

* strace.spec: Parametrize libunwind-devel BRs, BuildRoot, and %defattr.

tests: remove obsolete strace-f.test

strace-f.test is too inexact while fork-f.test does the right thing.

* tests/strace-f.test: Remove.
* tests/Makefile.am (MISC_TESTS): Remove it.
* strace.spec (BuildRequires): Remove time.

tests: always distribute strace-k.test

Fix distribution of tests/strace-k.test file when configured
without libunwind.

* tests/Makefile.am (EXTRA_DIST): Add strace-k.test.

make-dist: skip news-check for non-releases

* make-dist: Run news-check only when the commit being built
matches a release tag.

tests: check decoding of setrlimit, getrlimit, and ugetrlimit syscalls

* tests/getrlimit.c: New file.
* tests/setrlimit.c: Likewise.
* tests/ugetrlimit.c: Likewise.
* tests/xgetrlimit.c: Likewise.
* tests/getrlimit.test: New test.
* tests/setrlimit.test: Likewise.
* tests/ugetrlimit.test: Likewise.
* tests/.gitignore: Add getrlimit, setrlimit, and ugetrlimit.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add getrlimit.test, setrlimit.test,
and ugetrlimit.test.
(EXTRA_DIST): Add xgetrlimit.c.

tests: check decoding of prlimit64 syscall

* tests/prlimit64.c: New file.
* tests/prlimit64.test: New test.
* tests/.gitignore: Add prlimit64.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add prlimit64.test.

Fix decoding of pid_t argument of prlimit64 syscall

* resource.c (SYS_FUNC(prlimit64)): Print pid_t syscall
argument using %d format.

Do not check for old sysctl enums

Assume that sysctl enums defined since linux v2.6 are always defined,
with a signle exception: check for CTL_PROC which definition was removed
in v2.6.18 and restored later in v2.6.23.

* configure.ac (AC_CHECK_DECLS): Remove old constants.
* xlat/sysctl_kern.in: Mark constants older than KERN_PRINTK_RATELIMIT
as unconditional.
* xlat/sysctl_net.in: Mark constants older than NET_LLC
as unconditional.
* xlat/sysctl_net_core.in: Mark constants older than NET_CORE_BUDGET
as unconditional.
* xlat/sysctl_net_ipv4.in: Mark constants older than
NET_IPV4_IGMP_MAX_MSF as unconditional.
* xlat/sysctl_net_ipv4_conf.in: Mark constants older than
NET_IPV4_CONF_FORCE_IGMP_VERSION as unconditional.
* xlat/sysctl_net_ipv4_route.in: Mark constants older than
NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS as unconditional.
* xlat/sysctl_net_ipv6.in: Mark constants older than
NET_IPV6_MLD_MAX_MSF as unconditional.
* xlat/sysctl_net_ipv6_route.in: Mark constants older than
NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS as unconditional.
* xlat/sysctl_net_unix.in: Mark all constants as unconditional.
* xlat/sysctl_root.in: Mark constants older than CTL_ARLAN
as unconditional.
* xlat/sysctl_vm.in: Mark constants older than VM_MAX_MAP_COUNT
as unconditional.

xlat: extend syntax

* xlat/gen.sh: Implement #conditional directive that turns on
preprocessor checks turned off earlier by #unconditional directive.

mpers.awk: remove unnecessary type attribute retrieval

* mpers.awk (what_is): Do not retrieve "type" attribute
for "enumeration_type".

tests/ptrace.c: fix fork() return value check

* tests/ptrace.c (test_peeksiginfo): Explicitly cast fork() return value
to pid_t.

.gitignore: add missing files that should be ignored

* .gitignore: Add ioctl_redefs[12].h and libstrace.a.

debian: sync with the package

* debian/control (Build-Depends) [amd64]: Remove libunwind-dev.
* debian/changelog: Sync with 4.12-3.
* debian/rules: Likewise.

tests/strace-S.test: fix testing 64-bit strace using a 32-bit userspace

* tests/strace-S.test: Measure wall clock time instead of system time.
Use local "./readv" instead of system "date" as a sample executable.

Reported-by: Steve McIntyre <steve@einval.com>

tests/strace-S.test: enhance error diagnostics

* tests/strace-S.test: If strace output does not meet expectations,
print the output.

.gitignore: sort the list of ignored patterns

* .gitignore: Sort.

maint: post-release administrivia

* NEWS: Add header line for the next release.

Prepare for 4.12 release

* NEWS: Update for 4.12 release.
* debian/changelog: 4.12-1.
* strace.spec: 4.12-1.

Sync strace.spec and debian/changelog with packages

* debian/changelog: Sync with 4.11-1.
* strace.spec: Sync with 4.11.0.163.9720-2.

Mpersify hdio.c

* defs.h (hdio_ioctl): Remove.
* hdio.c: Mpersify struct hd_geometry.
(hdio_ioctl): Mpersify.

loop.c: decode LOOP_SET_DIRECT_IO

* loop.c (loop_ioctl) [LOOP_SET_DIRECT_IO] : Handle LOOP_SET_DIRECT_IO.

loop.c: fix printing of arrays

* loop.c (decode_loop_info): Use square brackets to print
struct loop_info.lo_init and struct loop_info.reserved arrays.
(decode_loop_info64): Use square brackets to print
struct loop_info64.lo_init array.

loop.c: fix printing of structure members' names

* loop.c (decode_loop_info, decode_loop_info64): Do not strip "lo_"
prefix from printed names.

loop.c: optimize decoding of paired ioctls

* loop.c (loop_ioctl): Optimize decoding of LOOP_[GS]ET_STATUS
and LOOP_[GS]ET_STATUS64 ioctl pairs.

tests/ioctl_evdev.c: check EVIOCGUNIQ decoding

* tests/ioctl_evdev.c (main): Check EVIOCGUNIQ(0) decoding.

tests/ioctl_mtd.c: fix build with musl

* tests/ioctl_mtd.c: Include <linux/ioctl.h>.

tests: check decoding of 'M' type ioctls

* tests/ioctl_mtd.c: New file.
* tests/ioctl_mtd.test: New test.
* tests/.gitignore: Add ioctl_mtd.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add ioctl_mtd.test.

Mpersify mtd.c

* defs.h (mtd_ioctl): Remove.
* mtd.c: Mpersify struct mtd_oob_buf and ioctl numbers.
(mtd_ioctl): Mpersify.

mtd.c: refactor

* mtd.c (mtd_ioctl): Move parsers of structures to separate functions.

Move parser of UBI_* ioctls to a separate file

* mtd.c (ubi_ioctl): Move to ...
* ubi.c: ... new file.
* Makefile.am (strace_SOURCES): Add it.

tests: check decoding of EVIOC* ioctls

* tests/ioctl_evdev.c: New file.
* tests/ioctl_evdev-v.c: Likewise.
* tests/ioctl_evdev.test: New test.
* tests/ioctl_evdev-v.test: Likewise.
* tests/.gitignore: Add ioctl_evdev and ioctl_evdev-v.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add ioctl_evdev.test and ioctl_evdev-v.test.

Mpersify EVIOC* ioctl parser

* defs.h (evdev_abs): New xlat prototype.
(evdev_ioctl): Remove.
* evdev.c: Do not include "xlat/evdev_abs.h".
Mpersify struct ff_effect and ioctl numbers.
(evdev_ioctl): Mpersify.
* NEWS: Mention this enhancement.

evdev.c: fix printing of unrecognized event type passed to EVIOCGBIT

* evdev.c (bit_ioctl): If event type is not unrecognized,
print the argument as an address.

evdev.c: fix printing of EV_PWR's argument

* evdev.c (bit_ioctl): Fix printing of comma before EV_PWR's argument.

evdev.c: fix indentation

* evdev.c: Fix indentation of print formats.

evdev.c: fix decoding of EVIOCGNAME, EVIOCGPHYS, and EVIOCGUNIQ

* evdev.c (evdev_read_ioctl): Fix printing of the string returned
in response to EVIOCGNAME, EVIOCGPHYS, and EVIOCGUNIQ requests.

evdev.c: fix EVIOCGVERSION decoding

* evdev.c (evdev_read_ioctl): Print EVIOCGVERSION's argument
using #x format.

evdev.c: fix EVIOCGMTSLOTS decoding

* evdev.c (mtslots_ioctl): Use umove_or_printaddr.

evdev.c: fix bitset decoding

* evdev.c (decode_bitset): Use umove_or_printaddr.

evdev.c: fix decoding of struct input_id

* evdev.c (getid_ioctl): Use umove_or_printaddr.

evdev.c: fix decoding of struct input_keymap_entry

* evdev.c (keycode_V2_ioctl): Use umove_or_printaddr.

evdev.c: fix decoding of EVIOCGKEYCODE/EVIOCSKEYCODE

* evdev.c (keycode_ioctl): Use umove_or_printaddr.

evdev.c: fix decoding of struct input_absinfo

* evdev.c (abs_ioctl): Use umove_or_printaddr.

evdev.c: fix decoding of struct ff_effect

* evdev.c (ff_effect_ioctl): Use umove_or_printaddr.
Fix printing of struct ff_effect.u member names.

evdev.c: fix printing of struct ff_envelope.fade_level

* evdev.c (decode_envelope): Print struct ff_envelope.fade_level
using #x format.

evdev.c: fix decoding of EVIOCGRAB and EVIOCREVOKE

* evdev.c (evdev_write_ioctl): Print argument of EVIOCGRAB
and EVIOCREVOKE as unsigned long.

evdev.c: fix EVIOCRMFF decoding

* evdev.c (evdev_write_ioctl): Print EVIOCRMFF's argument as int.

evdev.c: move handling of EVIOCGBIT to a separate function

* evdev.c (evdev_read_ioctl): Move EVIOCGBIT handling to ...
(bit_ioctl): ... new function.

evdev.c: reorder ioctl command checks

Change the order of ioctl command cheks to match the kernel:
1st, check for fixed-number fixed-length commands,
2nd, check for fixed-number variable-length commands,
3rd, check for multi-number fixed-length commands,
4thm check for multi-number variable-length commands.

* evdev.c (evdev_read_ioctl, evdev_write_ioctl): Reorder
ioctl command checks.

evdev.c: decode all directions except _IOC_READ on entering syscall

* evdev.c (evdev_write_ioctl): Remove exiting check.
(evdev_read_ioctl): Move entering check ...
(evdev_ioctl): ... here.  Add RVAL_DECODED to return code in _IOC_WRITE
and default cases.

evdev.c: fix indentation of preprocessor directives

* evdev.c: Fix indentation of preprocessor directives.
Move inclusion of <linux/ioctl.h> into [HAVE_LINUX_INPUT_H].

file_ioctl.c: print first two extents for FIDEDUPERANGE in abbrev mode

* file_ioctl.c (file_ioctl, print_file_dedupe_range_info): Print first
two elements of info array in abbrev mode.
* tests/btrfs.c (btrfs_test_extent_same_ioctl): Handle newly
printed elements.

ioctl.c: fix typo in decoding of EVIOCSABS's parameter

* ioctl.c (evdev_decode_number): Fix typo in printxval default value.

tests: check decoding of btrfs RDWR ioctls returned data

* tests/btrfs-vw.test: New file.
* tests/btrfs-w.test: New file.
* tests/Makefile.am (DECODER_TESTS): Add them.

tests/btrfs.c: fix live btrfs_test_search_ioctls output

* tests/btrfs.c (btrfs_test_search_ioctls): Use print_tree_search_buf
for BTRFS_IOC_TREE_SEARCH and fix missing whitespace.

btrfs.c: don't use print_array in btrfs_print_tree_search

* btrfs.c (btrfs_print_tree_search): Don't use print_array.  The buffer
represents a series of variable sized records, not an array.

btrfs.c: fix print_array usage in btrfs_print_logical_ino_container

* btrfs.c: (btrfs_print_logical_ino_container) Fix the element count
to reflect the number of records rather than the number of items.

tests/btrfs.c: fix btrfs-v for BTRFS_IOC_TREE_SEARCH

* tests/btrfs.c (btrfs_test_send_ioctl): Assign key_reference
to search_args for BTRFS_IOC_TREE_SEARCH ioctl tests.

Fix -yy documentation

* strace.c (usage): Fix description of -yy option.
* strace.1: Likewise.

tests/ioctl_block.c: tweak magic constants to make the test more reliable

* tests/ioctl_block.c (main): Change bad pointer to make
its lower 32-bit part closer to -1U.

tests/btrfs.c: check basic decoding of read-only ioctls

* tests/btrfs.c (btrfs_test_read_ioctls): New function.
(main): Use it.

tests: check decoding of BLK* ioctls

* configure.ac (AC_CHECK_TYPES): Add struct blk_user_trace_setup.
* tests/ioctl_block.c: New file.
* tests/ioctl_block.test: New test.
* tests/.gitignore: Add ioctl_block.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add ioctl_block.test.

Mpersify BLK* ioctl parser

* defs.h (block_ioctl): Remove.
* block.c: Mpersify struct blk_user_trace_setup,
struct blkpg_ioctl_arg, struct blkpg_partition, and ioctl numbers.
(block_ioctl): Mpersify.
* NEWS: Mention this enhancement.

block.c: optimize decoding of paired ioctls

* block.c (block_ioctl): Optimize decoding of commands that return
a signed int.

block.c: fix printing of uint64_t pairs

* block.c (block_ioctl): Print uint64_t values using PRIu64 format.