1 Noteworthy changes in release ?.?? (????-??-??)
2 ===============================================
5 * Enhanced decoding of personality, sched_getaffinity,
6 and sched_setaffinity syscalls.
9 * Fixed build on arc, metag, nios2, or1k, and tile architectures.
10 * Fixed decoding of 32-bit times syscall return value on 64-bit architectures.
12 Noteworthy changes in release 4.11 (2015-12-21)
13 ===============================================
16 * Some syscalls have different names depending on architecture and
17 personality. In these cases, syscall filtering and printing now
18 consistently uses the names that match corresponding __NR_* kernel
19 macros of the tracee's architecture and personality.
20 * Added strace prefix to all diagnostic messages.
23 * Enhanced and extended test suite.
24 * Implemented reliable tracing of processes whose personality differs
25 from the personality of strace, fixed decoding of 32-bit personality
26 syscalls on 64-bit architectures.
27 * When some data referenced by syscall arguments is irrelevant or cannot
28 be read from tracee's memory, strace now prints its address consistently.
29 * When a syscall is restarted using restart_syscall mechanism, strace now
30 shows the syscall name on architectures that expose this information.
31 * Print values returned by epoll_create1, eventfd, eventfd2, fanotify_init,
32 inotify_init1, perf_event_open, pipe, pipe2, signalfd, signalfd4, socket,
33 socketpair, timerfd, and timerfd_create syscalls, as well as F_DUPFD and
34 F_DUPFD_CLOEXEC fcntl commands, as file descriptors.
35 * Optimized decoding of indirect socket syscalls.
36 * Implemented decoding of nanoseconds along with seconds in stat family
37 syscalls (addresses Fedora bug #1251176).
38 * Implemented decoding of struct statfs.f_flags in statfs syscall.
39 * Implemented decoding of siginfo_t.si_syscall and siginfo_t.si_arch
41 * Implemented decoding of indirect syscall on mips o32.
42 * Implemented decoding of IPPROTO_IP control messages.
43 * Implemented decoding of setsockopt syscall multicast arguments.
44 * Enhanced decoding of struct sigevent.
45 * Enhanced decoding of block, loop, mtd, ptp, rtc, SG_IO, socket, tty,
46 and v4l2 ioctl syscall arguments.
47 * Enhanced decoding of epoll_create, fcntl, fcntl64, futex, getdents,
48 getdents64, getsockopt, io_*, mount, msgctl, prctl, quotactl, recvfrom,
49 sendfile, setsockopt, and shmctl syscalls.
50 * Implemented decoding of bpf, execveat, ioperm, iopl, kcmp, kexec_file_load,
51 lookup_dcookie, membarrier, memfd_create, mlock2, name_to_handle_at,
52 open_by_handle_at, sched_getattr, sched_setattr, and userfaultfd syscalls.
53 * Updated lists of AF_*, EPOLL_*, FALLOC_FL_*, F_*, INPUT_PROP_*, IPPROTO_*,
54 IPV6_*, IP_*, KEY_*, LOCK_*, MNT_*, MS_*, PACKET_*, PERF_FLAG_*, PF_*,
55 PR_*, PTRACE_O_*, RENAME_*, SCTP_*, SECBIT_*, SO_*, TCP_*, and siginfo_t
57 * Added Nios II architecture support.
58 * Added new syscall entries to match Linux 4.4.
61 * Fixed potential short read of strings from tracee's memory.
62 * Fixed -qq option in conjunction with -o option.
63 * Fixed filtering of <unavailable> syscalls.
64 * Fixed decoding of ioctl syscall command on aarch64 and 32-bit architectures
65 with 64-bit aligned structures.
66 * Fixed decoding of eventfd2, epoll_create1, signalfd4, and sync_file_range2
67 syscall flags arguments.
68 * Fixed decoding of 4th argument of clock_nanosleep syscall.
69 * Fixed decoding of getpagesize syscall on m68k.
70 * Fixed decoding of getrandom and seccomp syscalls on aarch64.
71 * Fixed decoding of timezone argument of gettimeofday and settimeofday
73 * Fixed decoding of offset argument of mmap2 syscall on arm, sparc,
75 * Fixed decoding of pipe syscall on alpha and mips.
76 * Fixed decoding of pipe2 syscall on ia64, sh, sparc, and sparc64.
77 * Fixed decoding of signal mask argument of pselect6 syscall on x32.
78 * Fixed decoding of signal mask of rt_sigreturn syscall on aarch64, m68k,
80 * Fixed decoding of 4th argument of semctl indirect syscall.
81 * Fixed decoding of sa_restorer and sa_mask of sigaction syscall on m68k.
82 * Fixed decoding of statfs64 and fstatfs64 syscalls on arm eabi.
83 * Fixed decoding of struct dirent on x32.
84 * Fixed decoding of times syscall return value on mips n32 and x32.
85 * Fixed decoding of path argument of umount2 syscall
86 (addresses Debian bug #785050).
87 * Worked around a kernel bug in tracing privileged executables.
88 * Fixed various errors in mapping between syscall numbers and associated
89 information like the number of syscall arguments, the name of syscall,
92 Noteworthy changes in release 4.10 (2015-03-06)
93 ===============================================
96 * Added -yy option to print protocol and address information associated with
98 * Extended "-e read=set" and "-e write=set" options to cover sendmsg,
99 recvmsg, sendmmsg, and recvmmsg syscalls.
100 * Implemented full 32-bit decoding of ioctl commands
101 (addresses Debian bug #692913 and Fedora bug #902788).
102 * Implemented PTRACE_GETREGS API support on ia64.
103 * Implemented PTRACE_GETREGS API support on mips.
104 * Implemented PTRACE_GETREGSET API support on s390/s390x.
105 * Implemented decoding of getrandom and seccomp syscalls.
106 * Implemented full decoding of 64-bit capability sets.
107 * Implemented decoding of all prctl commands.
108 * Implemented decoding of parametrized ioctl commands.
109 * Implemented decoding of evdev ioctl commands.
110 * Implemented decoding of v4l ioctl commands.
111 * Implemented decoding of SG_IO v4 ioctl commands.
112 * Implemented decoding of FIFREEZE/FITHAW/FITRIM ioctl commands.
113 * Implemented decoding of FALLOC_FL_* fallocate flags.
114 * Implemented decoding of rt_sigreturn signal mask on aarch64,
116 * Enhanced socket decoder to support bluetooth sockets.
117 * Enhanced decoding of unlisted ioctl commands.
118 * Enhanced decoding of getsockopt and setsockopt syscall.
119 * Enhanced decoding of sysinfo syscall.
120 * Enhanced decoding of struct cmsghdr.
121 * Enhanced decoding of wait status.
122 * Enhanced aio support on non-x86 architectures by using external libaio.h.
123 * Added O_TMPFILE to the list of recognized open mode flags.
124 * Updated the list of filesystem type constants that is used in decoding
125 statfs family syscalls.
126 * Updated lists of CAP_*, PR_*, PTRACE_*, SCHED_*, SO_*, SOL_*, SWAP_FLAG_*,
128 * Updated lists of signal constants from Linux 3.19.
129 * Updated lists of errno constants from Linux 3.19.
130 * Updated lists of ioctl commands from Linux 3.9.
131 * Added new syscall entries to match Linux 3.19.
134 * Fixed various errors in mapping between syscall numbers and associated
135 information like the number of syscall arguments, the name of syscall,
137 * Fixed quoting issues in printing descriptors, filenames, network interface
138 names, struct utsname members, device/volume names of BLK* ioctl commands.
139 * Fixed uid_t/git_t decoding.
140 * Fixed potential out-of-bounds read issues in getdents/getdents64 decoders.
141 * Fixed potential open flags truncation on some architectures.
142 * Fixed decoding of struct ifreq.ifr_name.
143 * Fixed decoding of SIOCSIFNAME ioctl command.
144 * Fixed decoding of RENAME_* renameat2 flags.
145 * Fixed decoding of UTIME_NOW/UTIME_OMIT timeval structures.
146 * Fixed decoding of indirect ipc subcalls on some architectures.
147 * Fixed decoding of fanotify_mark syscall on 32-bit architectures.
148 * Fixed decoding of 32-bit stat structures on 64-bit architectures.
149 * Fixed decoding of 32-bit struct cmsghdr on 64-bit architectures.
150 * Fixed decoding of 32-bit preadv/pwritev offset on 64-bit architectures.
151 * Fixed decoding of sigreturn/rt_sigreturn signal mask on ia64, ppc, ppc64,
152 sparc, sparc64, mips, and s390.
153 * Fixed instruction pointer output (-i option) on architectures that support
154 several personalities.
155 * Fixed behaviour of "-e read=set" and "-e write=set" when read and write
157 * Fixed build on systems where struct sigaction has no sa_restorer member.
158 * Fixed build with uclibc and musl libc.
161 * Linux kernel >= 2.5.46 is required.
162 Older versions without a decent PTRACE_SETOPTIONS support will not work.
163 * On mips, linux kernel >= 2.6.15 is required.
164 Older versions without a decent PTRACE_GETREGS support will not work.
165 * On s390 and s390x, linux kernel >= 2.6.27 is required.
166 Older versions without a decent PTRACE_GETREGSET support will not work.
168 Noteworthy changes in release 4.9 (2014-08-15)
169 ==============================================
171 * Changes in behavior
172 * Disabled OABI support on ARM EABI systems by default,
173 added --enable-arm-oabi option to enable it at configure time.
176 * Added experimental -k option to print stack trace after each traced syscall.
177 * Added -w option to produce stats on syscall latency.
178 (addresses Debian bug #457497).
179 * Added ARC architecture support.
180 * Added PTRACE_GETREGS API support on PowerPC.
181 * Enhanced Bionic libc and musl libc support.
182 * Enhanced tracing of x86 personality processes on x86_64 and x32.
183 * Enhanced tracing of ARM personality processes on AArch64.
184 * Enhanced 32/64bit personality detection on PowerPC.
185 * Implemented decoding of add_key, ioprio_get, ioprio_set, kexec_load, keyctl,
186 renameat2, and request_key syscalls.
187 * Robustified decoding of select, pselect, and io_submit syscalls.
188 * Enhanced decoding of delete_module, fanotify_init, fanotify_mark, fcntl,
189 setdomainname, sethostname, setns, and sync_file_range syscalls.
190 * Enhanced decoding of signal bitmasks.
191 * Enhanced decoding of file descriptors.
192 * Enhanced siginfo_t decoding.
193 * Enhanced PF_NETLINK decoding.
194 * Updated CLOCK_* constants
195 (addresses Fedora bug #1088455).
196 * Added new syscall entries to match Linux 3.16.
199 * Added shmat and shmdt to the set of memory mapping related syscalls.
200 * Fixed detaching from stopped processes.
201 * Fixed fanotify_mark decoding on 32bit architectures.
202 * Fixed offset decoding in preadv and pwritev syscalls.
203 * Fixed select decoding for glibc in _FORTIFY_SOURCE mode.
204 * Fixed decoding of epoll_ctl syscall with EPOLL_CTL_DEL argument.
205 * Fixed build when <sys/ptrace.h> and <linux/ptrace.h> conflict
206 (addresses Fedora bug #993384).
207 * Miscellaneous corrections in the manual page.
208 (Addresses Debian bug #725987).
210 Noteworthy changes in release 4.8 (2013-06-03)
211 ==============================================
213 * Changes in behavior
214 * In case of normal strace termination, when the trace output is
215 redirected to a pipe, strace now closes it and waits for the pipe
216 process termination before exit.
219 * Implemented tracing using PTRACE_SEIZE API (when available).
220 * Implemented more reliable PTRACE_GETREGSET-based process personality
221 detection on x86-64 and x32 (when available).
222 * Added -e trace=memory option for tracing memory mapping related syscalls.
223 * Documented -b option.
224 * Allowed exit status messages to be suppressed by giving -q option twice.
225 * Added AArch64 architecture support
226 (addresses Debian bug #693074 and Fedora bug #969858).
227 * Added support for OpenRISC 1000, Meta, and Xtensa architectures.
228 * Added tilegx personality support for Tile.
229 * Enhanced support of NOMMU architectures.
230 * Enhanced decoding of getdents, mmap, perf_event_open, ptrace, and
232 * Added new syscall entries to match Linux 3.9.
233 * Regenerated the list of common ioctl names from Linux 3.9.
234 * Updated the list of errno constants.
235 * Updated lists of AF_*, MADV_*, MAP_*, MSG_*, MS_*, PF_*, PR_*,
236 PTRACE_O_*, and TCP_* constants.
237 * Implemented decoding of UBI ioctls.
238 * Removed redundant "*32" ioctl names.
241 * Fixed ERESTARTNOINTR leaking to userspace on ancient kernels
242 (addresses Fedora bug #659382).
243 * Fixed kernel release string parsing
244 (addresses Debian bug #702309).
245 * Fixed decoding of *xattr syscalls
246 (addresses Fedora bug #885233).
247 * Fixed handling of files with 64-bit inode numbers by 32-bit strace
248 (addresses Fedora bug #912790).
249 * Fixed tracing forks on SPARC.
250 * Fixed decoding of fadvise64, fallocate, ftruncate64, io_submit, pread,
251 preadv, pwrite, pwritev, readahead, sigaltstack, sync_file_range, sysctl,
252 and truncate64 syscalls.
253 * Fixed categories of multiple syscalls on most of supported architectures.
254 * Fixed decoding of non-native 32-bit personality recv[m]msg syscalls.
255 * Fixed decoding of multiple 32-bit personality syscalls on x32.
256 * Fixed decoding of long long syscall arguments on ARM, MIPS/o32, PowerPC,
257 S390x, and Tile architectures.
258 * Fixed semtimedop decoding on S390x.
259 * Fixed sram_alloc decoding on Blackfin.
260 * Fixed build when process_vm_readv is a stab.
261 * Fixed build with older versions of libaio.h.
263 Noteworthy changes in release 4.7 (2012-05-02)
264 ==============================================
266 * Changes in behavior
267 * strace no longer suspends waitpid until there is a child
268 for waitpid'ing process to collect status from.
269 * strace no longer detaches from a tracee which is supposed
271 * strace now issues a new message: "+++ exited with EXITCODE +++"
272 which shows exact moment strace got exit notification,
273 analogous to existing "+++ killed by SIG +++" message.
276 * Added x32 personality support (x86_64 architecture).
277 * Added -y and -P options to print file descriptor paths and
278 filter by those paths.
279 * Added -I option to control strace interactivity.
280 * Allowed -p option to take comma or whitespace-separated list of PIDs.
281 * Added strace_log_merge script helper to merge timestamped "strace -ff"
283 * Implemented decoding of clock_adjtime, get_robust_list, migrate_pages,
284 preadv, prlimit64, process_vm_readv, process_vm_writev, pwritev,
285 recvmmsg, recvmsg, rt_tgsigqueueinfo, sendmmsg, setns, set_robust_list,
286 sched_rr_get_interval, splice, syslog, tee and vmsplice syscalls.
287 * Enhanced decoding of capget, capset, getrlimit, flistxattr, io_submit,
288 listxattr, setrlimit and swapon syscalls.
289 * Implemented decoding of loop and mtd ioctls.
290 * Added syscall entries for new linux syscalls.
291 * Added syscall entries for direct socket system calls on powerpc.
292 * Updated the list of errno constants.
293 * Updated lists of MSG_*, STA_*, and TCP_* constants.
294 * Regenerated the list of ioctl names from Linux 3.3.
295 * Enhanced switching between processes with different personalities.
296 * Enhanced signals reporting by using short signal names.
297 * Made ERESTART* messages more descriptive.
298 * Made parsing of numbers from strings more robust.
299 * Added support for compat_statfs64 and statfs64.f_flags.
300 * Changed read of data blocks to use single process_vm_readv syscall
301 (when available) instead of several PTRACE_PEEKDATA operations.
302 * Changed read of registers on x86 and x86-64 to use single PTRACE_GETREGS
303 operation instead of several PTRACE_PEEKUSER operations.
304 * Applied various optimizations to make strace work faster.
307 * Implemented proper handling of real SIGTRAPs on kernels supporting
308 PTRACE_O_TRACESYSGOOD.
309 (Addresses Fedora bug #162774).
310 * Fixed sockaddr_un.sun_path name in decoded output.
311 (Addresses Debian bug #554946).
312 * Fixed to avoid potential core file clobbering on exit.
313 (Addresses Debian bug #656398).
314 * Fixed a typo in documentation.
315 (Addresses Debian bug #653309).
316 * Fixed decoding of timer id returned by timer_create.
317 * Fixed epoll_create1, epoll_wait and epoll_pwait decoding.
318 * Fixed *at syscalls flags decoding.
319 * Fixed ARM EABI 64-bit syscall's arguments decoding.
320 * Fixed semtimedop decoding on s390.
321 * Fixed osf_sigprocmask decoding on alpha.
322 * Fixed ipc and socket subcall decoding on several architectures.
323 * Corrected syscall entries for epoll_pwait, epoll_create, epoll_ctl,
324 epoll_wait, mincore, mlockall, prctl, reboot, sendfile, sendfile64,
325 sendmsg, sgetmask, ssetmask, swapon, tgkill and tkill syscalls.
326 * Corrected io_* syscall entries on ARM.
327 * Fixed PID prefix printing in "strace -oLOG -ff -p1 -p2 -p3" case.
328 * Fixed logging of unfinished lines in "strace -oLOG -ff" case.
329 * Fixed build when libaio-devel is not available.
330 * Fixed configure checks for PTRACE_* constants.
331 * Fixed compilation warnings remained on several architectures.
334 * Removed all non-Linux code. After years of neglect, that dead code
335 just hampered further strace development.
336 * Linux kernel >= 2.6.18 is recommended. Older versions might still
337 work but they haven't been thoroughly tested with this release.
339 Noteworthy changes in release 4.6 (2011-03-15)
340 ==============================================
342 * Changes in behavior
343 * Print diagnostic information about changes in personality mode to
344 standard error instead of standard output.
347 * Implemented a new method of following clone, fork, and vfork
348 syscalls using the Linux kernel's explicit facilities for tracing
349 creation of threads and child processes.
350 * Implemented CLONE_PARENT and CLONE_UNTRACED flags handling.
351 * Implemented decoding of TLS syscalls on m68k.
352 * Implemented biarch support on powerpc64.
353 * Implemented biarch support for getrlimit() and setrlimit().
354 * Implemented decoding of struct ucred in getsockopt SO_PEERCRED.
355 * Implemented SOL_SCTP socket options decoding.
356 * Added HDIO_* ioctl names.
357 (Addresses Debian bug #450953).
358 * Added LOOP_* ioctl names.
359 * Updated lists of CLOCK_*, CLONE_*, MS_*, and SOL_* constants
360 to match Linux 2.6.37.
361 * Updated the list of IPPROTO_* constants to match netinet/in.h.
362 * Implemented decoding of HDIO_* and BLK* ioctls.
363 * Added MicroBlaze architecture support.
364 * Added new syscall entries to match Linux 2.6.37.
365 * Regenerated list of ioctl names from Linux 2.6.37.
366 * Enhanced signal notification decoding.
367 * Documented -C and -D options.
370 * Fixed fetching syscall arguments on m68k.
371 * Fixed an error when judging whether a process has children.
372 * Fixed get/set_robust_list syscall numbers for powerpc.
373 * Fixed a corner case in printing clone flags.
374 * Fixed cross-compiling issues.
375 * Fixed build issues on powerpc64, SH and SPARC.
376 * Fixed syscall flags of fstatat*, mmap, mmap2, fadvise64*, swapoff,
377 fgetxattr, flistxattr, fremovexattr, epoll_create, fallocate,
378 fanotify_init, and fanotify_mark syscalls.
379 * Fixed decoding of get[ug]id, gete[ug]id and setfs[ug]id return values.
380 * Fixed biarch support in IO dumping.
381 * Fixed raw exit_group decoding.
382 * Fixed decoding of file descriptors on 64-bit architectures.
383 * Fixed a corner case in waitpid handling.
384 (Addresses Red Hat bug #663547).
385 * Fixed stat64 decoding on mips
386 (Addresses Debian bug #599028).
387 * Fixed misleading italics in the manual page.
388 (Addresses Debian bug #589323).
390 Noteworthy changes in release 4.5.20 (2010-04-13)
391 =================================================
394 * Implemented decoding of new linux syscalls: inotify_init1, recvmmsg.
395 * Implemented basic decoding of new linux syscalls: preadv, pwritev,
396 rt_tgsigqueueinfo, perf_event_open.
397 * Enhanced decoding of recently added syscalls on non-x86 architectures
398 by replacing a bare decoder with elaborate parsers enabled earlier
400 * Implemented -C option to combine regular and -c output.
401 (Addresses Debian bug #466196)
402 * Enhanced decoding of mbind and mremap syscalls.
403 * Enhanced SOL_PACKET socket options decoding.
404 * Regenerated list of ioctl names from linux 2.6.33.
405 * Added TILE architecture support.
408 * Fixed build with Linux kernel headers 2.6.32-rc5+.
409 (Addresses Debian bug #560516 and Fedora bug #539044)
410 * Fixed build on mips.
411 * Fixed handling of Linux systems without struct statfs64.
412 * Fixed reporting signal mask by sigreturn on powerpc.
413 * Fixed potential stack buffer overflow in select decoder.
414 (Addresses Fedora bug #556678)
415 * Corrected msgsnd indirect ipccall decoding.
416 * Corrected decoding of 64bit syscalls.
417 (Addresses Debian bug #570603)
418 * Corrected getsockopt decoding on architectures where
419 sizeof(long) > sizeof(int).
420 (Addresses Debian bug #494844)
421 * Corrected decoding of epoll_pwait.
422 (Addresses Debian bug #513014)
423 * Corrected handling of killed threads.
425 Noteworthy changes in release 4.5.19 (2009-10-21)
426 =================================================
428 * Changes in behavior
429 * When command exits, strace now exits with the same exit status.
430 If command is terminated by a signal, strace terminates itself
431 with the same signal, so that strace can be used as a wrapper
432 process transparent to the invoking parent process.
433 When using -p option, the exit status of strace is zero unless
434 there was an unexpected error in doing the tracing.
435 (Addresses Fedora bug #105371 and Debian bug #37665)
438 * Implemented decoding of new Linux syscalls: accept4, dup3,
439 epoll_create1, eventfd2, inotify_init1, pipe2, signalfd4.
440 * Implemented decoding of socket type flags introduced in Linux 2.6.27.
441 * Implemented decoding of accept4 socketcall.
442 * Enhanced prctl decoding.
443 * Enhanced nanosleep decoding.
444 * Enhanced ptrace decoding.
445 * Enhanced futex decoding.
446 * Enhanced CAP_* decoding.
447 * Enhanced SIOCS* ioctls decoding.
448 * Enhanced fcntl F_* flags decoding.
449 * Enhanced semop/semtimedop decoding.
450 * Updated ARM architecture support.
451 * Added Blackfin architecture support.
452 * Added AVR32 architecture support.
453 * Added CRIS architecture support.
454 * Made strace detect when traced process suddenly disappeared.
457 * Fixed syscall numbers for tee and sync_file_range.
458 (Addresses Debian bug #503124)
459 * Fixed several bugs in strings decoder, including potential heap
461 (Addresses Fedora bugs #470529, #478324 and #511035)
462 * Marked sendfile(2) as a network syscall.
463 (Addresses Debian bug #509499)
464 * Fixed accept(2) decoding.
465 (Addresses Debian bug #507573)
466 * Fixed sigtimedwait(2) decoding.
467 * Fixed build on ARM EABI.
468 (Addresses Debian bugs #520084 and #535564, and Fedora bug #507576)
469 * Fixed display of 32-bit fcntl(F_SETLK) on 64-bit architectures.
470 (Addresses Red Hat bug #471169)
471 * Fixed display of 32-bit argv array on 64-bit architectures.
472 (Addresses Fedora bug #519480)
473 * Fixed display of 32-bit struct sigaction on 64-bit architectures.
474 * Fixed HPPA architecture support.
475 (Addresses Debian bugs #437928 and #546619)
480 * Support new Linux/PPC system call subpage_prot and PROT_SAO flag.
481 * In sigaction system call, display sa_flags value along with SIG_DFL/SIG_IGN.
486 * -F is now deprecated, -f has traced vfork too on Linux for a long time now.
487 * Print O_CLOEXEC, MSG_CMSG_CLOEXEC flag bits.
488 * Improved output for prctl system call on Linux.
489 * Improved support for Linux/ARM.
490 * SA_NOMASK is now spelled SA_NODEFER, and SA_ONESHOT is spelled SA_RESETHAND.
495 * Improved output for delete_module, futex, and mbind system calls on Linux.
496 * Improved output for SG_IO ioctls on Linux.
497 * Support new Linux system calls move_pages, utimensat, signalfd, timerfd,
498 eventfd, getcpu, epoll_pwait.
503 * Several biarch improvements.
504 * Improved output for adjtimex, sysctl, quotactl, mount, umount.
505 * Support new Linux system calls *at, inotify*, pselect6, ppoll and unshare.
510 * Accept numeric system calls in -e.
515 * Introduce "-e trace=desc".
520 * Better x86-64 support for IA32 processes.
521 * Update PowerPC system calls.
522 * Better printing for Linux aio system calls.
526 * Quick fix release for build issues.
527 * One fix for Linux/ARM system call table.
532 * Print fault address for SIGSEGV/SIGBUS signals when available.
537 * Improve socket ioctl printing.
538 * Update Linux/IA64 syscall list.
539 * Fix Linux/x86-64 syscall argument extraction for 32-bit processes.
540 * Improve mount flags printing.
541 * Support symbolic printing of x86_64 arch_prctl parameters.
546 * Update syscall tables for Alpha, ARM, HPPA.
547 * Support new Linux syscalls mbind, set_mempolicy, get_mempolicy, waitid.
548 * Support Linux syscalls fadvise64, fadvise64_64, and epoll_*.
549 * Improve ioctl command name matching.
550 * Print RTC_* ioctl structure contents.
551 * Support newer RLIMIT_* values.
552 * Print struct cmsghdr details in sendmsg.
557 * Print attribute values in *xattr system calls on Linux.
558 * Include pread and pwrite calls in -e read and -e write tracing.
559 * Update SO_* and IP_* value lists and add IPV6_* values for socket options.
560 * Print clock_t values symbolically in Linux clock_* system calls.
564 * Bug fixes, Linux ioctl updates.
565 * David Miller contributed support for Linux/SPARC64.
573 * Update Linux ioctl lists.
574 * Update PF_* and AF_* value lists.
575 * The 4.5.3 -p behavior for NPTL threads applies only under -f, and got fixed.
580 * On Linux using NPTL threads, -p will now attach to all threads in a process.
581 * Handle new mq_* system calls in Linux 2.6.6 and later.
586 * Report some new VM_* bit values on Linux.
587 * Better output for Linux sched_* system calls.
592 * Display multiple ioctl name matches on Linux.
596 * New port to AMD's x86-64 architecture. One strace binary can
597 handle both new x86-64 and old i386 processes.
598 * Fixed support for LFS64 calls.
599 * New switch -E to add/remove environment variables for the command.
600 * Merged s390/s390x port.
601 * Trace an unbounded number of processes.
602 * Handle numerous new system calls in Linux 2.5, and new threads semantics.
603 * Fixed bugs with attach/detach leaving things stopped.
604 * Fixed traced process seeing ECHILD despite live, traced children
605 in waitpid calls with WNOHANG.
606 * Stuart Menefy contributed a port to Linux/SH.
607 * Stephen Thomas contributed a port to Linux/SH64.
608 * Many other bug fixes.
612 * Fix Linux/ia64 support, looks like someone renamed a few things on us
613 * Fix the ioctl setup for Linux, turned out it did not really work.
614 Improve the ioctl extracter as well so we decode some more ones.
618 * compile fixes for Linux/mips
622 * Linux ia64 and hppa ports added
623 * The usual Linux syscall updates (includes 32bit uid/gid support),
624 * Linux ioctl list updated
625 * Support IPv6 scope ids
626 * FreeBSD/i386 port added
627 * UnixWare and Solaris updates
628 * Better support for tracing multithreaded processes in Linux
632 * Compiles on glibc2.0 systems again
633 * Linux/S390 port added
634 * The usual Linux syscall updates
635 * we can follow fork on arm now
639 * Linux/MIPS port added
640 * Lots of Linux updates again
641 * Improved IPv6 support
647 * Compiles on glibc2.0 systems again
651 * Get stat structure properly on Linux 64bit archs
652 * Personalities work again
653 * Compile correctly on SunOS again
659 * Linux (ultra)sparc fixes
666 * add support for more Linux architectures (powerpc, sparc, arm)
667 * support lots more Linux syscalls
668 * fix signal handling
669 * add IPX and IPIP support
670 * check stray syscall after execv
671 * fix hanging children
673 Changes in version 3.1
674 ======================
677 * Linux 68k is supported
678 * Linux alpha is supported
679 * configure is upgraded to autoconf 2.x
680 * using -f in combination with -e now works correctly
681 * output can be piped to a program
682 * tracing setuid programs works better
683 * it is now reasonable to install strace setuid to root in some circumstances
684 * new useful tracing names like file and process to trace whole
685 classes of system calls, e.g. -efile traces all system calls that
686 take a file name as an argument
687 * IPC calls on SunOS 4.1.x are decoded
688 * Linux program memory is reliably dereferenced
689 * Linux decodes at least the name of all syscalls as of pre2.0.4
690 * various cosmetic changes and bug fixes
692 Changes from versions 2.x to version 3.0
693 ========================================
695 * filename arguments are neither abbreviated nor stringified
696 * string arguments are now true C strings using octal instead of hex by default
697 * preprocessor constants are never shortened (e.g. was RDONLY => now O_RDONLY)
698 * by default the output for multiple processes now goes into one file
699 * all structures, vectors, bitsets, etc. use consistent output formats
700 * the -c option now means count calls, -i does what the old -c used to do
702 New Features in version 3.0
703 ===========================
705 * non-ascii strings can be optionally printed entirely in hex
706 * the output format is readable when mutiple processes are generating output
707 * exit values are printed in an alignment column
708 * is is possible to suppress messages about attaching and detaching
709 * various tracing features can be enabled on a per syscall/signal/desc basis
710 * selective tracing of syscalls
711 * selective printing of syscall structures
712 * selective abbreviation of long structures on a per syscall basis
713 * selective printing of raw syscall arguments and results
714 * selective tracing of signals
715 * selective dumping of all I/O read from file descriptors
716 * selective dumping of all I/O written to file descriptors
717 * optional counting of time, calls, and errors for each syscall
projects / strace / blob