1 Noteworthy changes in release ?.?? (????-??-??)
2 ===============================================
5 * When using -p option without a command and no processes has been attached,
6 strace exits with exit status 1.
8 Noteworthy changes in release 4.13 (2016-07-26)
9 ===============================================
12 * Implemented a general netlink socket parser.
13 * Enhanced decoding of socket addresses.
14 * Enhanced decoding of cmsghdr, msghdr, and mmsghdr structures.
15 * Enhanced decoding of accept, accept4, bind, getpeername, getsockname,
16 ipc, recvfrom, recvmsg, recvmmsg, sendto, sendmmsg, and socketcall syscalls.
17 * Updated lists of AF_*, BPF_MAP_TYPE_*, KEY_*, KEYCTL_*, RWF_*, SS_*,
18 and *_MAGIC constants.
19 * Updated lists of ioctl commands from Linux 4.7.
22 * Fixed decoding of pid_t argument of prlimit64 syscall.
23 * Fixed sign extension issues in the parser of struct rusage.
24 * Fixed race condition in decoding of timeout argument of recvmmsg and
25 rt_sigtimedwait syscalls.
26 * Fixed build with fresh linux kernel headers.
28 Noteworthy changes in release 4.12 (2016-05-31)
29 ===============================================
32 * Implemented simultaneous use of -p option and tracing of a command.
33 (addresses Debian bug #549942).
34 * Implemented caching of netlink conversations to reduce amount of time
35 spent in decoding socket details in -yy mode.
36 * Implemented -yy mode decoding of protocol:portid pairs associated with
37 netlink socket descriptors.
38 * Implemented decoding of copy_file_range, preadv2, and pwritev2 syscalls.
39 * Implemented dumping of preadv, preadv2, pwritev, pwritev2, and vmsplice
41 * Implemented decoding of BTRFS_* and UFFDIO_* ioctl commands.
42 * Enhanced decoding of BLK*, EVIOC*, RTC_*, and VIDIOC_* ioctl commands.
43 * Enhanced decoding of fstatfs, fstatfs64, get_mempolicy, getdents,
44 getdents64, getgroups, getpriority, kill, mbind, migrate_pages, mknod,
45 mknodat, personality, poll, ppoll, quotactl, rt_sigpending,
46 rt_sigqueueinfo, rt_sigtimedwait, rt_tgsigqueueinfo, sched_getaffinity,
47 sched_setaffinity, seccomp, set_mempolicy, setgroups, setpriority, statfs,
48 statfs64, tgkill, waitid, and xattr family syscalls.
49 * Enhanced decoding of getxpid, getxuid, and getxgid syscalls on alpha.
50 * Enhanced decoding of pipe syscall on alpha, ia64, mips, sh, and sparc.
51 * Added decoding of bind, listen, and setsockopt direct syscalls on sparc.
52 * Added decoding of osf_statfs64 and osf_fstatfs64 syscalls on alpha.
53 * Added decoding of fadvise64 and fadvise64_64 on s390.
54 * Updated lists of AF_*, BPF_MAP_TYPE_*, CLONE_*, EPOLL*, IPV6_*, MADV_*,
55 MSG_*, PTRACE_*, SEGV_*, SO_*, SOL_*, *_MAGIC, and quotactl constants.
56 * Updated lists of ioctl commands from Linux 4.6.
59 * Fixed build on arc, metag, nios2, or1k, and tile architectures.
60 * Fixed decoding of 32-bit times syscall return value on 64-bit architectures.
61 * Fixed decoding of mlock2 syscall on sparc.
62 * Fixed decoding of osf_shmat syscall on alpha.
63 * Fixed decoding of syscalls unknown to the kernel on s390/s390x.
64 (addresses Debian bug #485979 and Fedora bug #1298294).
65 * Fixed decoding of preadv syscall in case of short read.
66 * Fixed decoding and dumping of readv syscall in case of short read.
67 * Fixed dumping of recvmsg and recvmmsg syscalls in case of short read.
68 * Fixed decoding of mincore syscall's last argument.
69 * Fixed remaining errors in mapping between syscall numbers and numbers
71 * Applied various fixes to strace-graph script.
73 Noteworthy changes in release 4.11 (2015-12-21)
74 ===============================================
77 * Some syscalls have different names depending on architecture and
78 personality. In these cases, syscall filtering and printing now
79 consistently uses the names that match corresponding __NR_* kernel
80 macros of the tracee's architecture and personality.
81 * Added strace prefix to all diagnostic messages.
84 * Enhanced and extended test suite.
85 * Implemented reliable tracing of processes whose personality differs
86 from the personality of strace, fixed decoding of 32-bit personality
87 syscalls on 64-bit architectures.
88 * When some data referenced by syscall arguments is irrelevant or cannot
89 be read from tracee's memory, strace now prints its address consistently.
90 * When a syscall is restarted using restart_syscall mechanism, strace now
91 shows the syscall name on architectures that expose this information.
92 * Print values returned by epoll_create1, eventfd, eventfd2, fanotify_init,
93 inotify_init1, perf_event_open, pipe, pipe2, signalfd, signalfd4, socket,
94 socketpair, timerfd, and timerfd_create syscalls, as well as F_DUPFD and
95 F_DUPFD_CLOEXEC fcntl commands, as file descriptors.
96 * Optimized decoding of indirect socket syscalls.
97 * Implemented decoding of nanoseconds along with seconds in stat family
98 syscalls (addresses Fedora bug #1251176).
99 * Implemented decoding of struct statfs.f_flags in statfs syscall.
100 * Implemented decoding of siginfo_t.si_syscall and siginfo_t.si_arch
102 * Implemented decoding of indirect syscall on mips o32.
103 * Implemented decoding of IPPROTO_IP control messages.
104 * Implemented decoding of setsockopt syscall multicast arguments.
105 * Enhanced decoding of struct sigevent.
106 * Enhanced decoding of block, loop, mtd, ptp, rtc, SG_IO, socket, tty,
107 and v4l2 ioctl syscall arguments.
108 * Enhanced decoding of epoll_create, fcntl, fcntl64, futex, getdents,
109 getdents64, getsockopt, io_*, mount, msgctl, prctl, quotactl, recvfrom,
110 sendfile, setsockopt, and shmctl syscalls.
111 * Implemented decoding of bpf, execveat, ioperm, iopl, kcmp, kexec_file_load,
112 lookup_dcookie, membarrier, memfd_create, mlock2, name_to_handle_at,
113 open_by_handle_at, sched_getattr, sched_setattr, and userfaultfd syscalls.
114 * Updated lists of AF_*, EPOLL_*, FALLOC_FL_*, F_*, INPUT_PROP_*, IPPROTO_*,
115 IPV6_*, IP_*, KEY_*, LOCK_*, MNT_*, MS_*, PACKET_*, PERF_FLAG_*, PF_*,
116 PR_*, PTRACE_O_*, RENAME_*, SCTP_*, SECBIT_*, SO_*, TCP_*, and siginfo_t
118 * Added Nios II architecture support.
119 * Added new syscall entries to match Linux 4.4.
122 * Fixed potential short read of strings from tracee's memory.
123 * Fixed -qq option in conjunction with -o option.
124 * Fixed filtering of <unavailable> syscalls.
125 * Fixed decoding of ioctl syscall command on aarch64 and 32-bit architectures
126 with 64-bit aligned structures.
127 * Fixed decoding of eventfd2, epoll_create1, signalfd4, and sync_file_range2
128 syscall flags arguments.
129 * Fixed decoding of 4th argument of clock_nanosleep syscall.
130 * Fixed decoding of getpagesize syscall on m68k.
131 * Fixed decoding of getrandom and seccomp syscalls on aarch64.
132 * Fixed decoding of timezone argument of gettimeofday and settimeofday
134 * Fixed decoding of offset argument of mmap2 syscall on arm, sparc,
136 * Fixed decoding of pipe syscall on alpha and mips.
137 * Fixed decoding of pipe2 syscall on ia64, sh, sparc, and sparc64.
138 * Fixed decoding of signal mask argument of pselect6 syscall on x32.
139 * Fixed decoding of signal mask of rt_sigreturn syscall on aarch64, m68k,
141 * Fixed decoding of 4th argument of semctl indirect syscall.
142 * Fixed decoding of sa_restorer and sa_mask of sigaction syscall on m68k.
143 * Fixed decoding of statfs64 and fstatfs64 syscalls on arm eabi.
144 * Fixed decoding of struct dirent on x32.
145 * Fixed decoding of times syscall return value on mips n32 and x32.
146 * Fixed decoding of path argument of umount2 syscall
147 (addresses Debian bug #785050).
148 * Worked around a kernel bug in tracing privileged executables.
149 * Fixed various errors in mapping between syscall numbers and associated
150 information like the number of syscall arguments, the name of syscall,
153 Noteworthy changes in release 4.10 (2015-03-06)
154 ===============================================
157 * Added -yy option to print protocol and address information associated with
159 * Extended "-e read=set" and "-e write=set" options to cover sendmsg,
160 recvmsg, sendmmsg, and recvmmsg syscalls.
161 * Implemented full 32-bit decoding of ioctl commands
162 (addresses Debian bug #692913 and Fedora bug #902788).
163 * Implemented PTRACE_GETREGS API support on ia64.
164 * Implemented PTRACE_GETREGS API support on mips.
165 * Implemented PTRACE_GETREGSET API support on s390/s390x.
166 * Implemented decoding of getrandom and seccomp syscalls.
167 * Implemented full decoding of 64-bit capability sets.
168 * Implemented decoding of all prctl commands.
169 * Implemented decoding of parametrized ioctl commands.
170 * Implemented decoding of evdev ioctl commands.
171 * Implemented decoding of v4l ioctl commands.
172 * Implemented decoding of SG_IO v4 ioctl commands.
173 * Implemented decoding of FIFREEZE/FITHAW/FITRIM ioctl commands.
174 * Implemented decoding of FALLOC_FL_* fallocate flags.
175 * Implemented decoding of rt_sigreturn signal mask on aarch64,
177 * Enhanced socket decoder to support bluetooth sockets.
178 * Enhanced decoding of unlisted ioctl commands.
179 * Enhanced decoding of getsockopt and setsockopt syscall.
180 * Enhanced decoding of sysinfo syscall.
181 * Enhanced decoding of struct cmsghdr.
182 * Enhanced decoding of wait status.
183 * Enhanced aio support on non-x86 architectures by using external libaio.h.
184 * Added O_TMPFILE to the list of recognized open mode flags.
185 * Updated the list of filesystem type constants that is used in decoding
186 statfs family syscalls.
187 * Updated lists of CAP_*, PR_*, PTRACE_*, SCHED_*, SO_*, SOL_*, SWAP_FLAG_*,
189 * Updated lists of signal constants from Linux 3.19.
190 * Updated lists of errno constants from Linux 3.19.
191 * Updated lists of ioctl commands from Linux 3.9.
192 * Added new syscall entries to match Linux 3.19.
195 * Fixed various errors in mapping between syscall numbers and associated
196 information like the number of syscall arguments, the name of syscall,
198 * Fixed quoting issues in printing descriptors, filenames, network interface
199 names, struct utsname members, device/volume names of BLK* ioctl commands.
200 * Fixed uid_t/git_t decoding.
201 * Fixed potential out-of-bounds read issues in getdents/getdents64 decoders.
202 * Fixed potential open flags truncation on some architectures.
203 * Fixed decoding of struct ifreq.ifr_name.
204 * Fixed decoding of SIOCSIFNAME ioctl command.
205 * Fixed decoding of RENAME_* renameat2 flags.
206 * Fixed decoding of UTIME_NOW/UTIME_OMIT timeval structures.
207 * Fixed decoding of indirect ipc subcalls on some architectures.
208 * Fixed decoding of fanotify_mark syscall on 32-bit architectures.
209 * Fixed decoding of 32-bit stat structures on 64-bit architectures.
210 * Fixed decoding of 32-bit struct cmsghdr on 64-bit architectures.
211 * Fixed decoding of 32-bit preadv/pwritev offset on 64-bit architectures.
212 * Fixed decoding of sigreturn/rt_sigreturn signal mask on ia64, ppc, ppc64,
213 sparc, sparc64, mips, and s390.
214 * Fixed instruction pointer output (-i option) on architectures that support
215 several personalities.
216 * Fixed behaviour of "-e read=set" and "-e write=set" when read and write
218 * Fixed build on systems where struct sigaction has no sa_restorer member.
219 * Fixed build with uclibc and musl libc.
222 * Linux kernel >= 2.5.46 is required.
223 Older versions without a decent PTRACE_SETOPTIONS support will not work.
224 * On mips, linux kernel >= 2.6.15 is required.
225 Older versions without a decent PTRACE_GETREGS support will not work.
226 * On s390 and s390x, linux kernel >= 2.6.27 is required.
227 Older versions without a decent PTRACE_GETREGSET support will not work.
229 Noteworthy changes in release 4.9 (2014-08-15)
230 ==============================================
232 * Changes in behavior
233 * Disabled OABI support on ARM EABI systems by default,
234 added --enable-arm-oabi option to enable it at configure time.
237 * Added experimental -k option to print stack trace after each traced syscall.
238 * Added -w option to produce stats on syscall latency.
239 (addresses Debian bug #457497).
240 * Added ARC architecture support.
241 * Added PTRACE_GETREGS API support on PowerPC.
242 * Enhanced Bionic libc and musl libc support.
243 * Enhanced tracing of x86 personality processes on x86_64 and x32.
244 * Enhanced tracing of ARM personality processes on AArch64.
245 * Enhanced 32/64bit personality detection on PowerPC.
246 * Implemented decoding of add_key, ioprio_get, ioprio_set, kexec_load, keyctl,
247 renameat2, and request_key syscalls.
248 * Robustified decoding of select, pselect, and io_submit syscalls.
249 * Enhanced decoding of delete_module, fanotify_init, fanotify_mark, fcntl,
250 setdomainname, sethostname, setns, and sync_file_range syscalls.
251 * Enhanced decoding of signal bitmasks.
252 * Enhanced decoding of file descriptors.
253 * Enhanced siginfo_t decoding.
254 * Enhanced PF_NETLINK decoding.
255 * Updated CLOCK_* constants
256 (addresses Fedora bug #1088455).
257 * Added new syscall entries to match Linux 3.16.
260 * Added shmat and shmdt to the set of memory mapping related syscalls.
261 * Fixed detaching from stopped processes.
262 * Fixed fanotify_mark decoding on 32bit architectures.
263 * Fixed offset decoding in preadv and pwritev syscalls.
264 * Fixed select decoding for glibc in _FORTIFY_SOURCE mode.
265 * Fixed decoding of epoll_ctl syscall with EPOLL_CTL_DEL argument.
266 * Fixed build when <sys/ptrace.h> and <linux/ptrace.h> conflict
267 (addresses Fedora bug #993384).
268 * Miscellaneous corrections in the manual page.
269 (Addresses Debian bug #725987).
271 Noteworthy changes in release 4.8 (2013-06-03)
272 ==============================================
274 * Changes in behavior
275 * In case of normal strace termination, when the trace output is
276 redirected to a pipe, strace now closes it and waits for the pipe
277 process termination before exit.
280 * Implemented tracing using PTRACE_SEIZE API (when available).
281 * Implemented more reliable PTRACE_GETREGSET-based process personality
282 detection on x86-64 and x32 (when available).
283 * Added -e trace=memory option for tracing memory mapping related syscalls.
284 * Documented -b option.
285 * Allowed exit status messages to be suppressed by giving -q option twice.
286 * Added AArch64 architecture support
287 (addresses Debian bug #693074 and Fedora bug #969858).
288 * Added support for OpenRISC 1000, Meta, and Xtensa architectures.
289 * Added tilegx personality support for Tile.
290 * Enhanced support of NOMMU architectures.
291 * Enhanced decoding of getdents, mmap, perf_event_open, ptrace, and
293 * Added new syscall entries to match Linux 3.9.
294 * Regenerated the list of common ioctl names from Linux 3.9.
295 * Updated the list of errno constants.
296 * Updated lists of AF_*, MADV_*, MAP_*, MSG_*, MS_*, PF_*, PR_*,
297 PTRACE_O_*, and TCP_* constants.
298 * Implemented decoding of UBI ioctls.
299 * Removed redundant "*32" ioctl names.
302 * Fixed ERESTARTNOINTR leaking to userspace on ancient kernels
303 (addresses Fedora bug #659382).
304 * Fixed kernel release string parsing
305 (addresses Debian bug #702309).
306 * Fixed decoding of *xattr syscalls
307 (addresses Fedora bug #885233).
308 * Fixed handling of files with 64-bit inode numbers by 32-bit strace
309 (addresses Fedora bug #912790).
310 * Fixed tracing forks on SPARC.
311 * Fixed decoding of fadvise64, fallocate, ftruncate64, io_submit, pread,
312 preadv, pwrite, pwritev, readahead, sigaltstack, sync_file_range, sysctl,
313 and truncate64 syscalls.
314 * Fixed categories of multiple syscalls on most of supported architectures.
315 * Fixed decoding of non-native 32-bit personality recv[m]msg syscalls.
316 * Fixed decoding of multiple 32-bit personality syscalls on x32.
317 * Fixed decoding of long long syscall arguments on ARM, MIPS/o32, PowerPC,
318 S390x, and Tile architectures.
319 * Fixed semtimedop decoding on S390x.
320 * Fixed sram_alloc decoding on Blackfin.
321 * Fixed build when process_vm_readv is a stab.
322 * Fixed build with older versions of libaio.h.
324 Noteworthy changes in release 4.7 (2012-05-02)
325 ==============================================
327 * Changes in behavior
328 * strace no longer suspends waitpid until there is a child
329 for waitpid'ing process to collect status from.
330 * strace no longer detaches from a tracee which is supposed
332 * strace now issues a new message: "+++ exited with EXITCODE +++"
333 which shows exact moment strace got exit notification,
334 analogous to existing "+++ killed by SIG +++" message.
337 * Added x32 personality support (x86_64 architecture).
338 * Added -y and -P options to print file descriptor paths and
339 filter by those paths.
340 * Added -I option to control strace interactivity.
341 * Allowed -p option to take comma or whitespace-separated list of PIDs.
342 * Added strace_log_merge script helper to merge timestamped "strace -ff"
344 * Implemented decoding of clock_adjtime, get_robust_list, migrate_pages,
345 preadv, prlimit64, process_vm_readv, process_vm_writev, pwritev,
346 recvmmsg, recvmsg, rt_tgsigqueueinfo, sendmmsg, setns, set_robust_list,
347 sched_rr_get_interval, splice, syslog, tee and vmsplice syscalls.
348 * Enhanced decoding of capget, capset, getrlimit, flistxattr, io_submit,
349 listxattr, setrlimit and swapon syscalls.
350 * Implemented decoding of loop and mtd ioctls.
351 * Added syscall entries for new linux syscalls.
352 * Added syscall entries for direct socket system calls on powerpc.
353 * Updated the list of errno constants.
354 * Updated lists of MSG_*, STA_*, and TCP_* constants.
355 * Regenerated the list of ioctl names from Linux 3.3.
356 * Enhanced switching between processes with different personalities.
357 * Enhanced signals reporting by using short signal names.
358 * Made ERESTART* messages more descriptive.
359 * Made parsing of numbers from strings more robust.
360 * Added support for compat_statfs64 and statfs64.f_flags.
361 * Changed read of data blocks to use single process_vm_readv syscall
362 (when available) instead of several PTRACE_PEEKDATA operations.
363 * Changed read of registers on x86 and x86-64 to use single PTRACE_GETREGS
364 operation instead of several PTRACE_PEEKUSER operations.
365 * Applied various optimizations to make strace work faster.
368 * Implemented proper handling of real SIGTRAPs on kernels supporting
369 PTRACE_O_TRACESYSGOOD.
370 (Addresses Fedora bug #162774).
371 * Fixed sockaddr_un.sun_path name in decoded output.
372 (Addresses Debian bug #554946).
373 * Fixed to avoid potential core file clobbering on exit.
374 (Addresses Debian bug #656398).
375 * Fixed a typo in documentation.
376 (Addresses Debian bug #653309).
377 * Fixed decoding of timer id returned by timer_create.
378 * Fixed epoll_create1, epoll_wait and epoll_pwait decoding.
379 * Fixed *at syscalls flags decoding.
380 * Fixed ARM EABI 64-bit syscall's arguments decoding.
381 * Fixed semtimedop decoding on s390.
382 * Fixed osf_sigprocmask decoding on alpha.
383 * Fixed ipc and socket subcall decoding on several architectures.
384 * Corrected syscall entries for epoll_pwait, epoll_create, epoll_ctl,
385 epoll_wait, mincore, mlockall, prctl, reboot, sendfile, sendfile64,
386 sendmsg, sgetmask, ssetmask, swapon, tgkill and tkill syscalls.
387 * Corrected io_* syscall entries on ARM.
388 * Fixed PID prefix printing in "strace -oLOG -ff -p1 -p2 -p3" case.
389 * Fixed logging of unfinished lines in "strace -oLOG -ff" case.
390 * Fixed build when libaio-devel is not available.
391 * Fixed configure checks for PTRACE_* constants.
392 * Fixed compilation warnings remained on several architectures.
395 * Removed all non-Linux code. After years of neglect, that dead code
396 just hampered further strace development.
397 * Linux kernel >= 2.6.18 is recommended. Older versions might still
398 work but they haven't been thoroughly tested with this release.
400 Noteworthy changes in release 4.6 (2011-03-15)
401 ==============================================
403 * Changes in behavior
404 * Print diagnostic information about changes in personality mode to
405 standard error instead of standard output.
408 * Implemented a new method of following clone, fork, and vfork
409 syscalls using the Linux kernel's explicit facilities for tracing
410 creation of threads and child processes.
411 * Implemented CLONE_PARENT and CLONE_UNTRACED flags handling.
412 * Implemented decoding of TLS syscalls on m68k.
413 * Implemented biarch support on powerpc64.
414 * Implemented biarch support for getrlimit() and setrlimit().
415 * Implemented decoding of struct ucred in getsockopt SO_PEERCRED.
416 * Implemented SOL_SCTP socket options decoding.
417 * Added HDIO_* ioctl names.
418 (Addresses Debian bug #450953).
419 * Added LOOP_* ioctl names.
420 * Updated lists of CLOCK_*, CLONE_*, MS_*, and SOL_* constants
421 to match Linux 2.6.37.
422 * Updated the list of IPPROTO_* constants to match netinet/in.h.
423 * Implemented decoding of HDIO_* and BLK* ioctls.
424 * Added MicroBlaze architecture support.
425 * Added new syscall entries to match Linux 2.6.37.
426 * Regenerated list of ioctl names from Linux 2.6.37.
427 * Enhanced signal notification decoding.
428 * Documented -C and -D options.
431 * Fixed fetching syscall arguments on m68k.
432 * Fixed an error when judging whether a process has children.
433 * Fixed get/set_robust_list syscall numbers for powerpc.
434 * Fixed a corner case in printing clone flags.
435 * Fixed cross-compiling issues.
436 * Fixed build issues on powerpc64, SH and SPARC.
437 * Fixed syscall flags of fstatat*, mmap, mmap2, fadvise64*, swapoff,
438 fgetxattr, flistxattr, fremovexattr, epoll_create, fallocate,
439 fanotify_init, and fanotify_mark syscalls.
440 * Fixed decoding of get[ug]id, gete[ug]id and setfs[ug]id return values.
441 * Fixed biarch support in IO dumping.
442 * Fixed raw exit_group decoding.
443 * Fixed decoding of file descriptors on 64-bit architectures.
444 * Fixed a corner case in waitpid handling.
445 (Addresses Red Hat bug #663547).
446 * Fixed stat64 decoding on mips
447 (Addresses Debian bug #599028).
448 * Fixed misleading italics in the manual page.
449 (Addresses Debian bug #589323).
451 Noteworthy changes in release 4.5.20 (2010-04-13)
452 =================================================
455 * Implemented decoding of new linux syscalls: inotify_init1, recvmmsg.
456 * Implemented basic decoding of new linux syscalls: preadv, pwritev,
457 rt_tgsigqueueinfo, perf_event_open.
458 * Enhanced decoding of recently added syscalls on non-x86 architectures
459 by replacing a bare decoder with elaborate parsers enabled earlier
461 * Implemented -C option to combine regular and -c output.
462 (Addresses Debian bug #466196)
463 * Enhanced decoding of mbind and mremap syscalls.
464 * Enhanced SOL_PACKET socket options decoding.
465 * Regenerated list of ioctl names from linux 2.6.33.
466 * Added TILE architecture support.
469 * Fixed build with Linux kernel headers 2.6.32-rc5+.
470 (Addresses Debian bug #560516 and Fedora bug #539044)
471 * Fixed build on mips.
472 * Fixed handling of Linux systems without struct statfs64.
473 * Fixed reporting signal mask by sigreturn on powerpc.
474 * Fixed potential stack buffer overflow in select decoder.
475 (Addresses Fedora bug #556678)
476 * Corrected msgsnd indirect ipccall decoding.
477 * Corrected decoding of 64bit syscalls.
478 (Addresses Debian bug #570603)
479 * Corrected getsockopt decoding on architectures where
480 sizeof(long) > sizeof(int).
481 (Addresses Debian bug #494844)
482 * Corrected decoding of epoll_pwait.
483 (Addresses Debian bug #513014)
484 * Corrected handling of killed threads.
486 Noteworthy changes in release 4.5.19 (2009-10-21)
487 =================================================
489 * Changes in behavior
490 * When command exits, strace now exits with the same exit status.
491 If command is terminated by a signal, strace terminates itself
492 with the same signal, so that strace can be used as a wrapper
493 process transparent to the invoking parent process.
494 When using -p option, the exit status of strace is zero unless
495 there was an unexpected error in doing the tracing.
496 (Addresses Fedora bug #105371 and Debian bug #37665)
499 * Implemented decoding of new Linux syscalls: accept4, dup3,
500 epoll_create1, eventfd2, inotify_init1, pipe2, signalfd4.
501 * Implemented decoding of socket type flags introduced in Linux 2.6.27.
502 * Implemented decoding of accept4 socketcall.
503 * Enhanced prctl decoding.
504 * Enhanced nanosleep decoding.
505 * Enhanced ptrace decoding.
506 * Enhanced futex decoding.
507 * Enhanced CAP_* decoding.
508 * Enhanced SIOCS* ioctls decoding.
509 * Enhanced fcntl F_* flags decoding.
510 * Enhanced semop/semtimedop decoding.
511 * Updated ARM architecture support.
512 * Added Blackfin architecture support.
513 * Added AVR32 architecture support.
514 * Added CRIS architecture support.
515 * Made strace detect when traced process suddenly disappeared.
518 * Fixed syscall numbers for tee and sync_file_range.
519 (Addresses Debian bug #503124)
520 * Fixed several bugs in strings decoder, including potential heap
522 (Addresses Fedora bugs #470529, #478324 and #511035)
523 * Marked sendfile(2) as a network syscall.
524 (Addresses Debian bug #509499)
525 * Fixed accept(2) decoding.
526 (Addresses Debian bug #507573)
527 * Fixed sigtimedwait(2) decoding.
528 * Fixed build on ARM EABI.
529 (Addresses Debian bugs #520084 and #535564, and Fedora bug #507576)
530 * Fixed display of 32-bit fcntl(F_SETLK) on 64-bit architectures.
531 (Addresses Red Hat bug #471169)
532 * Fixed display of 32-bit argv array on 64-bit architectures.
533 (Addresses Fedora bug #519480)
534 * Fixed display of 32-bit struct sigaction on 64-bit architectures.
535 * Fixed HPPA architecture support.
536 (Addresses Debian bugs #437928 and #546619)
541 * Support new Linux/PPC system call subpage_prot and PROT_SAO flag.
542 * In sigaction system call, display sa_flags value along with SIG_DFL/SIG_IGN.
547 * -F is now deprecated, -f has traced vfork too on Linux for a long time now.
548 * Print O_CLOEXEC, MSG_CMSG_CLOEXEC flag bits.
549 * Improved output for prctl system call on Linux.
550 * Improved support for Linux/ARM.
551 * SA_NOMASK is now spelled SA_NODEFER, and SA_ONESHOT is spelled SA_RESETHAND.
556 * Improved output for delete_module, futex, and mbind system calls on Linux.
557 * Improved output for SG_IO ioctls on Linux.
558 * Support new Linux system calls move_pages, utimensat, signalfd, timerfd,
559 eventfd, getcpu, epoll_pwait.
564 * Several biarch improvements.
565 * Improved output for adjtimex, sysctl, quotactl, mount, umount.
566 * Support new Linux system calls *at, inotify*, pselect6, ppoll and unshare.
571 * Accept numeric system calls in -e.
576 * Introduce "-e trace=desc".
581 * Better x86-64 support for IA32 processes.
582 * Update PowerPC system calls.
583 * Better printing for Linux aio system calls.
587 * Quick fix release for build issues.
588 * One fix for Linux/ARM system call table.
593 * Print fault address for SIGSEGV/SIGBUS signals when available.
598 * Improve socket ioctl printing.
599 * Update Linux/IA64 syscall list.
600 * Fix Linux/x86-64 syscall argument extraction for 32-bit processes.
601 * Improve mount flags printing.
602 * Support symbolic printing of x86_64 arch_prctl parameters.
607 * Update syscall tables for Alpha, ARM, HPPA.
608 * Support new Linux syscalls mbind, set_mempolicy, get_mempolicy, waitid.
609 * Support Linux syscalls fadvise64, fadvise64_64, and epoll_*.
610 * Improve ioctl command name matching.
611 * Print RTC_* ioctl structure contents.
612 * Support newer RLIMIT_* values.
613 * Print struct cmsghdr details in sendmsg.
618 * Print attribute values in *xattr system calls on Linux.
619 * Include pread and pwrite calls in -e read and -e write tracing.
620 * Update SO_* and IP_* value lists and add IPV6_* values for socket options.
621 * Print clock_t values symbolically in Linux clock_* system calls.
625 * Bug fixes, Linux ioctl updates.
626 * David Miller contributed support for Linux/SPARC64.
634 * Update Linux ioctl lists.
635 * Update PF_* and AF_* value lists.
636 * The 4.5.3 -p behavior for NPTL threads applies only under -f, and got fixed.
641 * On Linux using NPTL threads, -p will now attach to all threads in a process.
642 * Handle new mq_* system calls in Linux 2.6.6 and later.
647 * Report some new VM_* bit values on Linux.
648 * Better output for Linux sched_* system calls.
653 * Display multiple ioctl name matches on Linux.
657 * New port to AMD's x86-64 architecture. One strace binary can
658 handle both new x86-64 and old i386 processes.
659 * Fixed support for LFS64 calls.
660 * New switch -E to add/remove environment variables for the command.
661 * Merged s390/s390x port.
662 * Trace an unbounded number of processes.
663 * Handle numerous new system calls in Linux 2.5, and new threads semantics.
664 * Fixed bugs with attach/detach leaving things stopped.
665 * Fixed traced process seeing ECHILD despite live, traced children
666 in waitpid calls with WNOHANG.
667 * Stuart Menefy contributed a port to Linux/SH.
668 * Stephen Thomas contributed a port to Linux/SH64.
669 * Many other bug fixes.
673 * Fix Linux/ia64 support, looks like someone renamed a few things on us
674 * Fix the ioctl setup for Linux, turned out it did not really work.
675 Improve the ioctl extracter as well so we decode some more ones.
679 * compile fixes for Linux/mips
683 * Linux ia64 and hppa ports added
684 * The usual Linux syscall updates (includes 32bit uid/gid support),
685 * Linux ioctl list updated
686 * Support IPv6 scope ids
687 * FreeBSD/i386 port added
688 * UnixWare and Solaris updates
689 * Better support for tracing multithreaded processes in Linux
693 * Compiles on glibc2.0 systems again
694 * Linux/S390 port added
695 * The usual Linux syscall updates
696 * we can follow fork on arm now
700 * Linux/MIPS port added
701 * Lots of Linux updates again
702 * Improved IPv6 support
708 * Compiles on glibc2.0 systems again
712 * Get stat structure properly on Linux 64bit archs
713 * Personalities work again
714 * Compile correctly on SunOS again
720 * Linux (ultra)sparc fixes
727 * add support for more Linux architectures (powerpc, sparc, arm)
728 * support lots more Linux syscalls
729 * fix signal handling
730 * add IPX and IPIP support
731 * check stray syscall after execv
732 * fix hanging children
734 Changes in version 3.1
735 ======================
738 * Linux 68k is supported
739 * Linux alpha is supported
740 * configure is upgraded to autoconf 2.x
741 * using -f in combination with -e now works correctly
742 * output can be piped to a program
743 * tracing setuid programs works better
744 * it is now reasonable to install strace setuid to root in some circumstances
745 * new useful tracing names like file and process to trace whole
746 classes of system calls, e.g. -efile traces all system calls that
747 take a file name as an argument
748 * IPC calls on SunOS 4.1.x are decoded
749 * Linux program memory is reliably dereferenced
750 * Linux decodes at least the name of all syscalls as of pre2.0.4
751 * various cosmetic changes and bug fixes
753 Changes from versions 2.x to version 3.0
754 ========================================
756 * filename arguments are neither abbreviated nor stringified
757 * string arguments are now true C strings using octal instead of hex by default
758 * preprocessor constants are never shortened (e.g. was RDONLY => now O_RDONLY)
759 * by default the output for multiple processes now goes into one file
760 * all structures, vectors, bitsets, etc. use consistent output formats
761 * the -c option now means count calls, -i does what the old -c used to do
763 New Features in version 3.0
764 ===========================
766 * non-ascii strings can be optionally printed entirely in hex
767 * the output format is readable when mutiple processes are generating output
768 * exit values are printed in an alignment column
769 * is is possible to suppress messages about attaching and detaching
770 * various tracing features can be enabled on a per syscall/signal/desc basis
771 * selective tracing of syscalls
772 * selective printing of syscall structures
773 * selective abbreviation of long structures on a per syscall basis
774 * selective printing of raw syscall arguments and results
775 * selective tracing of signals
776 * selective dumping of all I/O read from file descriptors
777 * selective dumping of all I/O written to file descriptors
778 * optional counting of time, calls, and errors for each syscall
projects / strace / blob