1 Noteworthy changes in release ?.?? (????-??-??)
2 ===============================================
5 * Implemented simultaneous use of -p option and tracing of a command.
6 (addresses Debian bug #549942).
7 * Enhanced decoding of personality, sched_getaffinity,
8 and sched_setaffinity syscalls.
9 * Enhanced decoding of getxpid, getxuid, and getxgid syscalls on alpha.
10 * Added decoding of bind, listen, and setsockopt direct syscalls on sparc.
11 * Implemented caching of netlink conversations to reduce amount of time
12 spent in decoding socket details in -yy mode.
13 * Implemented decoding of copy_file_range syscall.
14 * Implemented dumping of vmsplice syscall.
17 * Fixed build on arc, metag, nios2, or1k, and tile architectures.
18 * Fixed decoding of 32-bit times syscall return value on 64-bit architectures.
19 * Fixed decoding of mlock2 syscall on sparc.
20 * Fixed decoding of syscalls unknown to the kernel on s390/s390x.
21 (addresses Debian bug #485979 and Fedora bug #1298294).
22 * Fixed decoding and dumping of readv syscall in case of short read.
23 * Fixed dumping of recvmsg and recvmmsg syscalls in case of short read.
24 * Fixed decoding of mincore syscall's last argument.
25 * Fixed remaining errors in mapping between syscall numbers and numbers
28 Noteworthy changes in release 4.11 (2015-12-21)
29 ===============================================
32 * Some syscalls have different names depending on architecture and
33 personality. In these cases, syscall filtering and printing now
34 consistently uses the names that match corresponding __NR_* kernel
35 macros of the tracee's architecture and personality.
36 * Added strace prefix to all diagnostic messages.
39 * Enhanced and extended test suite.
40 * Implemented reliable tracing of processes whose personality differs
41 from the personality of strace, fixed decoding of 32-bit personality
42 syscalls on 64-bit architectures.
43 * When some data referenced by syscall arguments is irrelevant or cannot
44 be read from tracee's memory, strace now prints its address consistently.
45 * When a syscall is restarted using restart_syscall mechanism, strace now
46 shows the syscall name on architectures that expose this information.
47 * Print values returned by epoll_create1, eventfd, eventfd2, fanotify_init,
48 inotify_init1, perf_event_open, pipe, pipe2, signalfd, signalfd4, socket,
49 socketpair, timerfd, and timerfd_create syscalls, as well as F_DUPFD and
50 F_DUPFD_CLOEXEC fcntl commands, as file descriptors.
51 * Optimized decoding of indirect socket syscalls.
52 * Implemented decoding of nanoseconds along with seconds in stat family
53 syscalls (addresses Fedora bug #1251176).
54 * Implemented decoding of struct statfs.f_flags in statfs syscall.
55 * Implemented decoding of siginfo_t.si_syscall and siginfo_t.si_arch
57 * Implemented decoding of indirect syscall on mips o32.
58 * Implemented decoding of IPPROTO_IP control messages.
59 * Implemented decoding of setsockopt syscall multicast arguments.
60 * Enhanced decoding of struct sigevent.
61 * Enhanced decoding of block, loop, mtd, ptp, rtc, SG_IO, socket, tty,
62 and v4l2 ioctl syscall arguments.
63 * Enhanced decoding of epoll_create, fcntl, fcntl64, futex, getdents,
64 getdents64, getsockopt, io_*, mount, msgctl, prctl, quotactl, recvfrom,
65 sendfile, setsockopt, and shmctl syscalls.
66 * Implemented decoding of bpf, execveat, ioperm, iopl, kcmp, kexec_file_load,
67 lookup_dcookie, membarrier, memfd_create, mlock2, name_to_handle_at,
68 open_by_handle_at, sched_getattr, sched_setattr, and userfaultfd syscalls.
69 * Updated lists of AF_*, EPOLL_*, FALLOC_FL_*, F_*, INPUT_PROP_*, IPPROTO_*,
70 IPV6_*, IP_*, KEY_*, LOCK_*, MNT_*, MS_*, PACKET_*, PERF_FLAG_*, PF_*,
71 PR_*, PTRACE_O_*, RENAME_*, SCTP_*, SECBIT_*, SO_*, TCP_*, and siginfo_t
73 * Added Nios II architecture support.
74 * Added new syscall entries to match Linux 4.4.
77 * Fixed potential short read of strings from tracee's memory.
78 * Fixed -qq option in conjunction with -o option.
79 * Fixed filtering of <unavailable> syscalls.
80 * Fixed decoding of ioctl syscall command on aarch64 and 32-bit architectures
81 with 64-bit aligned structures.
82 * Fixed decoding of eventfd2, epoll_create1, signalfd4, and sync_file_range2
83 syscall flags arguments.
84 * Fixed decoding of 4th argument of clock_nanosleep syscall.
85 * Fixed decoding of getpagesize syscall on m68k.
86 * Fixed decoding of getrandom and seccomp syscalls on aarch64.
87 * Fixed decoding of timezone argument of gettimeofday and settimeofday
89 * Fixed decoding of offset argument of mmap2 syscall on arm, sparc,
91 * Fixed decoding of pipe syscall on alpha and mips.
92 * Fixed decoding of pipe2 syscall on ia64, sh, sparc, and sparc64.
93 * Fixed decoding of signal mask argument of pselect6 syscall on x32.
94 * Fixed decoding of signal mask of rt_sigreturn syscall on aarch64, m68k,
96 * Fixed decoding of 4th argument of semctl indirect syscall.
97 * Fixed decoding of sa_restorer and sa_mask of sigaction syscall on m68k.
98 * Fixed decoding of statfs64 and fstatfs64 syscalls on arm eabi.
99 * Fixed decoding of struct dirent on x32.
100 * Fixed decoding of times syscall return value on mips n32 and x32.
101 * Fixed decoding of path argument of umount2 syscall
102 (addresses Debian bug #785050).
103 * Worked around a kernel bug in tracing privileged executables.
104 * Fixed various errors in mapping between syscall numbers and associated
105 information like the number of syscall arguments, the name of syscall,
108 Noteworthy changes in release 4.10 (2015-03-06)
109 ===============================================
112 * Added -yy option to print protocol and address information associated with
114 * Extended "-e read=set" and "-e write=set" options to cover sendmsg,
115 recvmsg, sendmmsg, and recvmmsg syscalls.
116 * Implemented full 32-bit decoding of ioctl commands
117 (addresses Debian bug #692913 and Fedora bug #902788).
118 * Implemented PTRACE_GETREGS API support on ia64.
119 * Implemented PTRACE_GETREGS API support on mips.
120 * Implemented PTRACE_GETREGSET API support on s390/s390x.
121 * Implemented decoding of getrandom and seccomp syscalls.
122 * Implemented full decoding of 64-bit capability sets.
123 * Implemented decoding of all prctl commands.
124 * Implemented decoding of parametrized ioctl commands.
125 * Implemented decoding of evdev ioctl commands.
126 * Implemented decoding of v4l ioctl commands.
127 * Implemented decoding of SG_IO v4 ioctl commands.
128 * Implemented decoding of FIFREEZE/FITHAW/FITRIM ioctl commands.
129 * Implemented decoding of FALLOC_FL_* fallocate flags.
130 * Implemented decoding of rt_sigreturn signal mask on aarch64,
132 * Enhanced socket decoder to support bluetooth sockets.
133 * Enhanced decoding of unlisted ioctl commands.
134 * Enhanced decoding of getsockopt and setsockopt syscall.
135 * Enhanced decoding of sysinfo syscall.
136 * Enhanced decoding of struct cmsghdr.
137 * Enhanced decoding of wait status.
138 * Enhanced aio support on non-x86 architectures by using external libaio.h.
139 * Added O_TMPFILE to the list of recognized open mode flags.
140 * Updated the list of filesystem type constants that is used in decoding
141 statfs family syscalls.
142 * Updated lists of CAP_*, PR_*, PTRACE_*, SCHED_*, SO_*, SOL_*, SWAP_FLAG_*,
144 * Updated lists of signal constants from Linux 3.19.
145 * Updated lists of errno constants from Linux 3.19.
146 * Updated lists of ioctl commands from Linux 3.9.
147 * Added new syscall entries to match Linux 3.19.
150 * Fixed various errors in mapping between syscall numbers and associated
151 information like the number of syscall arguments, the name of syscall,
153 * Fixed quoting issues in printing descriptors, filenames, network interface
154 names, struct utsname members, device/volume names of BLK* ioctl commands.
155 * Fixed uid_t/git_t decoding.
156 * Fixed potential out-of-bounds read issues in getdents/getdents64 decoders.
157 * Fixed potential open flags truncation on some architectures.
158 * Fixed decoding of struct ifreq.ifr_name.
159 * Fixed decoding of SIOCSIFNAME ioctl command.
160 * Fixed decoding of RENAME_* renameat2 flags.
161 * Fixed decoding of UTIME_NOW/UTIME_OMIT timeval structures.
162 * Fixed decoding of indirect ipc subcalls on some architectures.
163 * Fixed decoding of fanotify_mark syscall on 32-bit architectures.
164 * Fixed decoding of 32-bit stat structures on 64-bit architectures.
165 * Fixed decoding of 32-bit struct cmsghdr on 64-bit architectures.
166 * Fixed decoding of 32-bit preadv/pwritev offset on 64-bit architectures.
167 * Fixed decoding of sigreturn/rt_sigreturn signal mask on ia64, ppc, ppc64,
168 sparc, sparc64, mips, and s390.
169 * Fixed instruction pointer output (-i option) on architectures that support
170 several personalities.
171 * Fixed behaviour of "-e read=set" and "-e write=set" when read and write
173 * Fixed build on systems where struct sigaction has no sa_restorer member.
174 * Fixed build with uclibc and musl libc.
177 * Linux kernel >= 2.5.46 is required.
178 Older versions without a decent PTRACE_SETOPTIONS support will not work.
179 * On mips, linux kernel >= 2.6.15 is required.
180 Older versions without a decent PTRACE_GETREGS support will not work.
181 * On s390 and s390x, linux kernel >= 2.6.27 is required.
182 Older versions without a decent PTRACE_GETREGSET support will not work.
184 Noteworthy changes in release 4.9 (2014-08-15)
185 ==============================================
187 * Changes in behavior
188 * Disabled OABI support on ARM EABI systems by default,
189 added --enable-arm-oabi option to enable it at configure time.
192 * Added experimental -k option to print stack trace after each traced syscall.
193 * Added -w option to produce stats on syscall latency.
194 (addresses Debian bug #457497).
195 * Added ARC architecture support.
196 * Added PTRACE_GETREGS API support on PowerPC.
197 * Enhanced Bionic libc and musl libc support.
198 * Enhanced tracing of x86 personality processes on x86_64 and x32.
199 * Enhanced tracing of ARM personality processes on AArch64.
200 * Enhanced 32/64bit personality detection on PowerPC.
201 * Implemented decoding of add_key, ioprio_get, ioprio_set, kexec_load, keyctl,
202 renameat2, and request_key syscalls.
203 * Robustified decoding of select, pselect, and io_submit syscalls.
204 * Enhanced decoding of delete_module, fanotify_init, fanotify_mark, fcntl,
205 setdomainname, sethostname, setns, and sync_file_range syscalls.
206 * Enhanced decoding of signal bitmasks.
207 * Enhanced decoding of file descriptors.
208 * Enhanced siginfo_t decoding.
209 * Enhanced PF_NETLINK decoding.
210 * Updated CLOCK_* constants
211 (addresses Fedora bug #1088455).
212 * Added new syscall entries to match Linux 3.16.
215 * Added shmat and shmdt to the set of memory mapping related syscalls.
216 * Fixed detaching from stopped processes.
217 * Fixed fanotify_mark decoding on 32bit architectures.
218 * Fixed offset decoding in preadv and pwritev syscalls.
219 * Fixed select decoding for glibc in _FORTIFY_SOURCE mode.
220 * Fixed decoding of epoll_ctl syscall with EPOLL_CTL_DEL argument.
221 * Fixed build when <sys/ptrace.h> and <linux/ptrace.h> conflict
222 (addresses Fedora bug #993384).
223 * Miscellaneous corrections in the manual page.
224 (Addresses Debian bug #725987).
226 Noteworthy changes in release 4.8 (2013-06-03)
227 ==============================================
229 * Changes in behavior
230 * In case of normal strace termination, when the trace output is
231 redirected to a pipe, strace now closes it and waits for the pipe
232 process termination before exit.
235 * Implemented tracing using PTRACE_SEIZE API (when available).
236 * Implemented more reliable PTRACE_GETREGSET-based process personality
237 detection on x86-64 and x32 (when available).
238 * Added -e trace=memory option for tracing memory mapping related syscalls.
239 * Documented -b option.
240 * Allowed exit status messages to be suppressed by giving -q option twice.
241 * Added AArch64 architecture support
242 (addresses Debian bug #693074 and Fedora bug #969858).
243 * Added support for OpenRISC 1000, Meta, and Xtensa architectures.
244 * Added tilegx personality support for Tile.
245 * Enhanced support of NOMMU architectures.
246 * Enhanced decoding of getdents, mmap, perf_event_open, ptrace, and
248 * Added new syscall entries to match Linux 3.9.
249 * Regenerated the list of common ioctl names from Linux 3.9.
250 * Updated the list of errno constants.
251 * Updated lists of AF_*, MADV_*, MAP_*, MSG_*, MS_*, PF_*, PR_*,
252 PTRACE_O_*, and TCP_* constants.
253 * Implemented decoding of UBI ioctls.
254 * Removed redundant "*32" ioctl names.
257 * Fixed ERESTARTNOINTR leaking to userspace on ancient kernels
258 (addresses Fedora bug #659382).
259 * Fixed kernel release string parsing
260 (addresses Debian bug #702309).
261 * Fixed decoding of *xattr syscalls
262 (addresses Fedora bug #885233).
263 * Fixed handling of files with 64-bit inode numbers by 32-bit strace
264 (addresses Fedora bug #912790).
265 * Fixed tracing forks on SPARC.
266 * Fixed decoding of fadvise64, fallocate, ftruncate64, io_submit, pread,
267 preadv, pwrite, pwritev, readahead, sigaltstack, sync_file_range, sysctl,
268 and truncate64 syscalls.
269 * Fixed categories of multiple syscalls on most of supported architectures.
270 * Fixed decoding of non-native 32-bit personality recv[m]msg syscalls.
271 * Fixed decoding of multiple 32-bit personality syscalls on x32.
272 * Fixed decoding of long long syscall arguments on ARM, MIPS/o32, PowerPC,
273 S390x, and Tile architectures.
274 * Fixed semtimedop decoding on S390x.
275 * Fixed sram_alloc decoding on Blackfin.
276 * Fixed build when process_vm_readv is a stab.
277 * Fixed build with older versions of libaio.h.
279 Noteworthy changes in release 4.7 (2012-05-02)
280 ==============================================
282 * Changes in behavior
283 * strace no longer suspends waitpid until there is a child
284 for waitpid'ing process to collect status from.
285 * strace no longer detaches from a tracee which is supposed
287 * strace now issues a new message: "+++ exited with EXITCODE +++"
288 which shows exact moment strace got exit notification,
289 analogous to existing "+++ killed by SIG +++" message.
292 * Added x32 personality support (x86_64 architecture).
293 * Added -y and -P options to print file descriptor paths and
294 filter by those paths.
295 * Added -I option to control strace interactivity.
296 * Allowed -p option to take comma or whitespace-separated list of PIDs.
297 * Added strace_log_merge script helper to merge timestamped "strace -ff"
299 * Implemented decoding of clock_adjtime, get_robust_list, migrate_pages,
300 preadv, prlimit64, process_vm_readv, process_vm_writev, pwritev,
301 recvmmsg, recvmsg, rt_tgsigqueueinfo, sendmmsg, setns, set_robust_list,
302 sched_rr_get_interval, splice, syslog, tee and vmsplice syscalls.
303 * Enhanced decoding of capget, capset, getrlimit, flistxattr, io_submit,
304 listxattr, setrlimit and swapon syscalls.
305 * Implemented decoding of loop and mtd ioctls.
306 * Added syscall entries for new linux syscalls.
307 * Added syscall entries for direct socket system calls on powerpc.
308 * Updated the list of errno constants.
309 * Updated lists of MSG_*, STA_*, and TCP_* constants.
310 * Regenerated the list of ioctl names from Linux 3.3.
311 * Enhanced switching between processes with different personalities.
312 * Enhanced signals reporting by using short signal names.
313 * Made ERESTART* messages more descriptive.
314 * Made parsing of numbers from strings more robust.
315 * Added support for compat_statfs64 and statfs64.f_flags.
316 * Changed read of data blocks to use single process_vm_readv syscall
317 (when available) instead of several PTRACE_PEEKDATA operations.
318 * Changed read of registers on x86 and x86-64 to use single PTRACE_GETREGS
319 operation instead of several PTRACE_PEEKUSER operations.
320 * Applied various optimizations to make strace work faster.
323 * Implemented proper handling of real SIGTRAPs on kernels supporting
324 PTRACE_O_TRACESYSGOOD.
325 (Addresses Fedora bug #162774).
326 * Fixed sockaddr_un.sun_path name in decoded output.
327 (Addresses Debian bug #554946).
328 * Fixed to avoid potential core file clobbering on exit.
329 (Addresses Debian bug #656398).
330 * Fixed a typo in documentation.
331 (Addresses Debian bug #653309).
332 * Fixed decoding of timer id returned by timer_create.
333 * Fixed epoll_create1, epoll_wait and epoll_pwait decoding.
334 * Fixed *at syscalls flags decoding.
335 * Fixed ARM EABI 64-bit syscall's arguments decoding.
336 * Fixed semtimedop decoding on s390.
337 * Fixed osf_sigprocmask decoding on alpha.
338 * Fixed ipc and socket subcall decoding on several architectures.
339 * Corrected syscall entries for epoll_pwait, epoll_create, epoll_ctl,
340 epoll_wait, mincore, mlockall, prctl, reboot, sendfile, sendfile64,
341 sendmsg, sgetmask, ssetmask, swapon, tgkill and tkill syscalls.
342 * Corrected io_* syscall entries on ARM.
343 * Fixed PID prefix printing in "strace -oLOG -ff -p1 -p2 -p3" case.
344 * Fixed logging of unfinished lines in "strace -oLOG -ff" case.
345 * Fixed build when libaio-devel is not available.
346 * Fixed configure checks for PTRACE_* constants.
347 * Fixed compilation warnings remained on several architectures.
350 * Removed all non-Linux code. After years of neglect, that dead code
351 just hampered further strace development.
352 * Linux kernel >= 2.6.18 is recommended. Older versions might still
353 work but they haven't been thoroughly tested with this release.
355 Noteworthy changes in release 4.6 (2011-03-15)
356 ==============================================
358 * Changes in behavior
359 * Print diagnostic information about changes in personality mode to
360 standard error instead of standard output.
363 * Implemented a new method of following clone, fork, and vfork
364 syscalls using the Linux kernel's explicit facilities for tracing
365 creation of threads and child processes.
366 * Implemented CLONE_PARENT and CLONE_UNTRACED flags handling.
367 * Implemented decoding of TLS syscalls on m68k.
368 * Implemented biarch support on powerpc64.
369 * Implemented biarch support for getrlimit() and setrlimit().
370 * Implemented decoding of struct ucred in getsockopt SO_PEERCRED.
371 * Implemented SOL_SCTP socket options decoding.
372 * Added HDIO_* ioctl names.
373 (Addresses Debian bug #450953).
374 * Added LOOP_* ioctl names.
375 * Updated lists of CLOCK_*, CLONE_*, MS_*, and SOL_* constants
376 to match Linux 2.6.37.
377 * Updated the list of IPPROTO_* constants to match netinet/in.h.
378 * Implemented decoding of HDIO_* and BLK* ioctls.
379 * Added MicroBlaze architecture support.
380 * Added new syscall entries to match Linux 2.6.37.
381 * Regenerated list of ioctl names from Linux 2.6.37.
382 * Enhanced signal notification decoding.
383 * Documented -C and -D options.
386 * Fixed fetching syscall arguments on m68k.
387 * Fixed an error when judging whether a process has children.
388 * Fixed get/set_robust_list syscall numbers for powerpc.
389 * Fixed a corner case in printing clone flags.
390 * Fixed cross-compiling issues.
391 * Fixed build issues on powerpc64, SH and SPARC.
392 * Fixed syscall flags of fstatat*, mmap, mmap2, fadvise64*, swapoff,
393 fgetxattr, flistxattr, fremovexattr, epoll_create, fallocate,
394 fanotify_init, and fanotify_mark syscalls.
395 * Fixed decoding of get[ug]id, gete[ug]id and setfs[ug]id return values.
396 * Fixed biarch support in IO dumping.
397 * Fixed raw exit_group decoding.
398 * Fixed decoding of file descriptors on 64-bit architectures.
399 * Fixed a corner case in waitpid handling.
400 (Addresses Red Hat bug #663547).
401 * Fixed stat64 decoding on mips
402 (Addresses Debian bug #599028).
403 * Fixed misleading italics in the manual page.
404 (Addresses Debian bug #589323).
406 Noteworthy changes in release 4.5.20 (2010-04-13)
407 =================================================
410 * Implemented decoding of new linux syscalls: inotify_init1, recvmmsg.
411 * Implemented basic decoding of new linux syscalls: preadv, pwritev,
412 rt_tgsigqueueinfo, perf_event_open.
413 * Enhanced decoding of recently added syscalls on non-x86 architectures
414 by replacing a bare decoder with elaborate parsers enabled earlier
416 * Implemented -C option to combine regular and -c output.
417 (Addresses Debian bug #466196)
418 * Enhanced decoding of mbind and mremap syscalls.
419 * Enhanced SOL_PACKET socket options decoding.
420 * Regenerated list of ioctl names from linux 2.6.33.
421 * Added TILE architecture support.
424 * Fixed build with Linux kernel headers 2.6.32-rc5+.
425 (Addresses Debian bug #560516 and Fedora bug #539044)
426 * Fixed build on mips.
427 * Fixed handling of Linux systems without struct statfs64.
428 * Fixed reporting signal mask by sigreturn on powerpc.
429 * Fixed potential stack buffer overflow in select decoder.
430 (Addresses Fedora bug #556678)
431 * Corrected msgsnd indirect ipccall decoding.
432 * Corrected decoding of 64bit syscalls.
433 (Addresses Debian bug #570603)
434 * Corrected getsockopt decoding on architectures where
435 sizeof(long) > sizeof(int).
436 (Addresses Debian bug #494844)
437 * Corrected decoding of epoll_pwait.
438 (Addresses Debian bug #513014)
439 * Corrected handling of killed threads.
441 Noteworthy changes in release 4.5.19 (2009-10-21)
442 =================================================
444 * Changes in behavior
445 * When command exits, strace now exits with the same exit status.
446 If command is terminated by a signal, strace terminates itself
447 with the same signal, so that strace can be used as a wrapper
448 process transparent to the invoking parent process.
449 When using -p option, the exit status of strace is zero unless
450 there was an unexpected error in doing the tracing.
451 (Addresses Fedora bug #105371 and Debian bug #37665)
454 * Implemented decoding of new Linux syscalls: accept4, dup3,
455 epoll_create1, eventfd2, inotify_init1, pipe2, signalfd4.
456 * Implemented decoding of socket type flags introduced in Linux 2.6.27.
457 * Implemented decoding of accept4 socketcall.
458 * Enhanced prctl decoding.
459 * Enhanced nanosleep decoding.
460 * Enhanced ptrace decoding.
461 * Enhanced futex decoding.
462 * Enhanced CAP_* decoding.
463 * Enhanced SIOCS* ioctls decoding.
464 * Enhanced fcntl F_* flags decoding.
465 * Enhanced semop/semtimedop decoding.
466 * Updated ARM architecture support.
467 * Added Blackfin architecture support.
468 * Added AVR32 architecture support.
469 * Added CRIS architecture support.
470 * Made strace detect when traced process suddenly disappeared.
473 * Fixed syscall numbers for tee and sync_file_range.
474 (Addresses Debian bug #503124)
475 * Fixed several bugs in strings decoder, including potential heap
477 (Addresses Fedora bugs #470529, #478324 and #511035)
478 * Marked sendfile(2) as a network syscall.
479 (Addresses Debian bug #509499)
480 * Fixed accept(2) decoding.
481 (Addresses Debian bug #507573)
482 * Fixed sigtimedwait(2) decoding.
483 * Fixed build on ARM EABI.
484 (Addresses Debian bugs #520084 and #535564, and Fedora bug #507576)
485 * Fixed display of 32-bit fcntl(F_SETLK) on 64-bit architectures.
486 (Addresses Red Hat bug #471169)
487 * Fixed display of 32-bit argv array on 64-bit architectures.
488 (Addresses Fedora bug #519480)
489 * Fixed display of 32-bit struct sigaction on 64-bit architectures.
490 * Fixed HPPA architecture support.
491 (Addresses Debian bugs #437928 and #546619)
496 * Support new Linux/PPC system call subpage_prot and PROT_SAO flag.
497 * In sigaction system call, display sa_flags value along with SIG_DFL/SIG_IGN.
502 * -F is now deprecated, -f has traced vfork too on Linux for a long time now.
503 * Print O_CLOEXEC, MSG_CMSG_CLOEXEC flag bits.
504 * Improved output for prctl system call on Linux.
505 * Improved support for Linux/ARM.
506 * SA_NOMASK is now spelled SA_NODEFER, and SA_ONESHOT is spelled SA_RESETHAND.
511 * Improved output for delete_module, futex, and mbind system calls on Linux.
512 * Improved output for SG_IO ioctls on Linux.
513 * Support new Linux system calls move_pages, utimensat, signalfd, timerfd,
514 eventfd, getcpu, epoll_pwait.
519 * Several biarch improvements.
520 * Improved output for adjtimex, sysctl, quotactl, mount, umount.
521 * Support new Linux system calls *at, inotify*, pselect6, ppoll and unshare.
526 * Accept numeric system calls in -e.
531 * Introduce "-e trace=desc".
536 * Better x86-64 support for IA32 processes.
537 * Update PowerPC system calls.
538 * Better printing for Linux aio system calls.
542 * Quick fix release for build issues.
543 * One fix for Linux/ARM system call table.
548 * Print fault address for SIGSEGV/SIGBUS signals when available.
553 * Improve socket ioctl printing.
554 * Update Linux/IA64 syscall list.
555 * Fix Linux/x86-64 syscall argument extraction for 32-bit processes.
556 * Improve mount flags printing.
557 * Support symbolic printing of x86_64 arch_prctl parameters.
562 * Update syscall tables for Alpha, ARM, HPPA.
563 * Support new Linux syscalls mbind, set_mempolicy, get_mempolicy, waitid.
564 * Support Linux syscalls fadvise64, fadvise64_64, and epoll_*.
565 * Improve ioctl command name matching.
566 * Print RTC_* ioctl structure contents.
567 * Support newer RLIMIT_* values.
568 * Print struct cmsghdr details in sendmsg.
573 * Print attribute values in *xattr system calls on Linux.
574 * Include pread and pwrite calls in -e read and -e write tracing.
575 * Update SO_* and IP_* value lists and add IPV6_* values for socket options.
576 * Print clock_t values symbolically in Linux clock_* system calls.
580 * Bug fixes, Linux ioctl updates.
581 * David Miller contributed support for Linux/SPARC64.
589 * Update Linux ioctl lists.
590 * Update PF_* and AF_* value lists.
591 * The 4.5.3 -p behavior for NPTL threads applies only under -f, and got fixed.
596 * On Linux using NPTL threads, -p will now attach to all threads in a process.
597 * Handle new mq_* system calls in Linux 2.6.6 and later.
602 * Report some new VM_* bit values on Linux.
603 * Better output for Linux sched_* system calls.
608 * Display multiple ioctl name matches on Linux.
612 * New port to AMD's x86-64 architecture. One strace binary can
613 handle both new x86-64 and old i386 processes.
614 * Fixed support for LFS64 calls.
615 * New switch -E to add/remove environment variables for the command.
616 * Merged s390/s390x port.
617 * Trace an unbounded number of processes.
618 * Handle numerous new system calls in Linux 2.5, and new threads semantics.
619 * Fixed bugs with attach/detach leaving things stopped.
620 * Fixed traced process seeing ECHILD despite live, traced children
621 in waitpid calls with WNOHANG.
622 * Stuart Menefy contributed a port to Linux/SH.
623 * Stephen Thomas contributed a port to Linux/SH64.
624 * Many other bug fixes.
628 * Fix Linux/ia64 support, looks like someone renamed a few things on us
629 * Fix the ioctl setup for Linux, turned out it did not really work.
630 Improve the ioctl extracter as well so we decode some more ones.
634 * compile fixes for Linux/mips
638 * Linux ia64 and hppa ports added
639 * The usual Linux syscall updates (includes 32bit uid/gid support),
640 * Linux ioctl list updated
641 * Support IPv6 scope ids
642 * FreeBSD/i386 port added
643 * UnixWare and Solaris updates
644 * Better support for tracing multithreaded processes in Linux
648 * Compiles on glibc2.0 systems again
649 * Linux/S390 port added
650 * The usual Linux syscall updates
651 * we can follow fork on arm now
655 * Linux/MIPS port added
656 * Lots of Linux updates again
657 * Improved IPv6 support
663 * Compiles on glibc2.0 systems again
667 * Get stat structure properly on Linux 64bit archs
668 * Personalities work again
669 * Compile correctly on SunOS again
675 * Linux (ultra)sparc fixes
682 * add support for more Linux architectures (powerpc, sparc, arm)
683 * support lots more Linux syscalls
684 * fix signal handling
685 * add IPX and IPIP support
686 * check stray syscall after execv
687 * fix hanging children
689 Changes in version 3.1
690 ======================
693 * Linux 68k is supported
694 * Linux alpha is supported
695 * configure is upgraded to autoconf 2.x
696 * using -f in combination with -e now works correctly
697 * output can be piped to a program
698 * tracing setuid programs works better
699 * it is now reasonable to install strace setuid to root in some circumstances
700 * new useful tracing names like file and process to trace whole
701 classes of system calls, e.g. -efile traces all system calls that
702 take a file name as an argument
703 * IPC calls on SunOS 4.1.x are decoded
704 * Linux program memory is reliably dereferenced
705 * Linux decodes at least the name of all syscalls as of pre2.0.4
706 * various cosmetic changes and bug fixes
708 Changes from versions 2.x to version 3.0
709 ========================================
711 * filename arguments are neither abbreviated nor stringified
712 * string arguments are now true C strings using octal instead of hex by default
713 * preprocessor constants are never shortened (e.g. was RDONLY => now O_RDONLY)
714 * by default the output for multiple processes now goes into one file
715 * all structures, vectors, bitsets, etc. use consistent output formats
716 * the -c option now means count calls, -i does what the old -c used to do
718 New Features in version 3.0
719 ===========================
721 * non-ascii strings can be optionally printed entirely in hex
722 * the output format is readable when mutiple processes are generating output
723 * exit values are printed in an alignment column
724 * is is possible to suppress messages about attaching and detaching
725 * various tracing features can be enabled on a per syscall/signal/desc basis
726 * selective tracing of syscalls
727 * selective printing of syscall structures
728 * selective abbreviation of long structures on a per syscall basis
729 * selective printing of raw syscall arguments and results
730 * selective tracing of signals
731 * selective dumping of all I/O read from file descriptors
732 * selective dumping of all I/O written to file descriptors
733 * optional counting of time, calls, and errors for each syscall
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