1 Noteworthy changes in release 4.13 (????-??-??)
2 ===============================================
5 * Implemented a general netlink socket parser.
6 * Enhanced decoding of socket addresses.
7 * Enhanced decoding of cmsghdr, msghdr, and mmsghdr structures.
8 * Enhanced decoding of accept, accept4, bind, getpeername, getsockname,
9 ipc, recvfrom, recvmsg, recvmmsg, sendto, sendmmsg, and socketcall syscalls.
10 * Updated lists of AF_*, BPF_MAP_TYPE_*, KEY_*, KEYCTL_*, RWF_*, SS_*,
11 and *_MAGIC constants.
12 * Updated lists of ioctl commands from Linux 4.7.
15 * Fixed decoding of pid_t argument of prlimit64 syscall.
16 * Fixed sign extension issues in the parser of struct rusage.
17 * Fixed race condition in decoding of timeout argument of recvmmsg and
18 rt_sigtimedwait syscalls.
19 * Fixed build with fresh linux kernel headers.
21 Noteworthy changes in release 4.12 (2016-05-31)
22 ===============================================
25 * Implemented simultaneous use of -p option and tracing of a command.
26 (addresses Debian bug #549942).
27 * Implemented caching of netlink conversations to reduce amount of time
28 spent in decoding socket details in -yy mode.
29 * Implemented -yy mode decoding of protocol:portid pairs associated with
30 netlink socket descriptors.
31 * Implemented decoding of copy_file_range, preadv2, and pwritev2 syscalls.
32 * Implemented dumping of preadv, preadv2, pwritev, pwritev2, and vmsplice
34 * Implemented decoding of BTRFS_* and UFFDIO_* ioctl commands.
35 * Enhanced decoding of BLK*, EVIOC*, RTC_*, and VIDIOC_* ioctl commands.
36 * Enhanced decoding of fstatfs, fstatfs64, get_mempolicy, getdents,
37 getdents64, getgroups, getpriority, kill, mbind, migrate_pages, mknod,
38 mknodat, personality, poll, ppoll, quotactl, rt_sigpending,
39 rt_sigqueueinfo, rt_sigtimedwait, rt_tgsigqueueinfo, sched_getaffinity,
40 sched_setaffinity, seccomp, set_mempolicy, setgroups, setpriority, statfs,
41 statfs64, tgkill, waitid, and xattr family syscalls.
42 * Enhanced decoding of getxpid, getxuid, and getxgid syscalls on alpha.
43 * Enhanced decoding of pipe syscall on alpha, ia64, mips, sh, and sparc.
44 * Added decoding of bind, listen, and setsockopt direct syscalls on sparc.
45 * Added decoding of osf_statfs64 and osf_fstatfs64 syscalls on alpha.
46 * Added decoding of fadvise64 and fadvise64_64 on s390.
47 * Updated lists of AF_*, BPF_MAP_TYPE_*, CLONE_*, EPOLL*, IPV6_*, MADV_*,
48 MSG_*, PTRACE_*, SEGV_*, SO_*, SOL_*, *_MAGIC, and quotactl constants.
49 * Updated lists of ioctl commands from Linux 4.6.
52 * Fixed build on arc, metag, nios2, or1k, and tile architectures.
53 * Fixed decoding of 32-bit times syscall return value on 64-bit architectures.
54 * Fixed decoding of mlock2 syscall on sparc.
55 * Fixed decoding of osf_shmat syscall on alpha.
56 * Fixed decoding of syscalls unknown to the kernel on s390/s390x.
57 (addresses Debian bug #485979 and Fedora bug #1298294).
58 * Fixed decoding of preadv syscall in case of short read.
59 * Fixed decoding and dumping of readv syscall in case of short read.
60 * Fixed dumping of recvmsg and recvmmsg syscalls in case of short read.
61 * Fixed decoding of mincore syscall's last argument.
62 * Fixed remaining errors in mapping between syscall numbers and numbers
64 * Applied various fixes to strace-graph script.
66 Noteworthy changes in release 4.11 (2015-12-21)
67 ===============================================
70 * Some syscalls have different names depending on architecture and
71 personality. In these cases, syscall filtering and printing now
72 consistently uses the names that match corresponding __NR_* kernel
73 macros of the tracee's architecture and personality.
74 * Added strace prefix to all diagnostic messages.
77 * Enhanced and extended test suite.
78 * Implemented reliable tracing of processes whose personality differs
79 from the personality of strace, fixed decoding of 32-bit personality
80 syscalls on 64-bit architectures.
81 * When some data referenced by syscall arguments is irrelevant or cannot
82 be read from tracee's memory, strace now prints its address consistently.
83 * When a syscall is restarted using restart_syscall mechanism, strace now
84 shows the syscall name on architectures that expose this information.
85 * Print values returned by epoll_create1, eventfd, eventfd2, fanotify_init,
86 inotify_init1, perf_event_open, pipe, pipe2, signalfd, signalfd4, socket,
87 socketpair, timerfd, and timerfd_create syscalls, as well as F_DUPFD and
88 F_DUPFD_CLOEXEC fcntl commands, as file descriptors.
89 * Optimized decoding of indirect socket syscalls.
90 * Implemented decoding of nanoseconds along with seconds in stat family
91 syscalls (addresses Fedora bug #1251176).
92 * Implemented decoding of struct statfs.f_flags in statfs syscall.
93 * Implemented decoding of siginfo_t.si_syscall and siginfo_t.si_arch
95 * Implemented decoding of indirect syscall on mips o32.
96 * Implemented decoding of IPPROTO_IP control messages.
97 * Implemented decoding of setsockopt syscall multicast arguments.
98 * Enhanced decoding of struct sigevent.
99 * Enhanced decoding of block, loop, mtd, ptp, rtc, SG_IO, socket, tty,
100 and v4l2 ioctl syscall arguments.
101 * Enhanced decoding of epoll_create, fcntl, fcntl64, futex, getdents,
102 getdents64, getsockopt, io_*, mount, msgctl, prctl, quotactl, recvfrom,
103 sendfile, setsockopt, and shmctl syscalls.
104 * Implemented decoding of bpf, execveat, ioperm, iopl, kcmp, kexec_file_load,
105 lookup_dcookie, membarrier, memfd_create, mlock2, name_to_handle_at,
106 open_by_handle_at, sched_getattr, sched_setattr, and userfaultfd syscalls.
107 * Updated lists of AF_*, EPOLL_*, FALLOC_FL_*, F_*, INPUT_PROP_*, IPPROTO_*,
108 IPV6_*, IP_*, KEY_*, LOCK_*, MNT_*, MS_*, PACKET_*, PERF_FLAG_*, PF_*,
109 PR_*, PTRACE_O_*, RENAME_*, SCTP_*, SECBIT_*, SO_*, TCP_*, and siginfo_t
111 * Added Nios II architecture support.
112 * Added new syscall entries to match Linux 4.4.
115 * Fixed potential short read of strings from tracee's memory.
116 * Fixed -qq option in conjunction with -o option.
117 * Fixed filtering of <unavailable> syscalls.
118 * Fixed decoding of ioctl syscall command on aarch64 and 32-bit architectures
119 with 64-bit aligned structures.
120 * Fixed decoding of eventfd2, epoll_create1, signalfd4, and sync_file_range2
121 syscall flags arguments.
122 * Fixed decoding of 4th argument of clock_nanosleep syscall.
123 * Fixed decoding of getpagesize syscall on m68k.
124 * Fixed decoding of getrandom and seccomp syscalls on aarch64.
125 * Fixed decoding of timezone argument of gettimeofday and settimeofday
127 * Fixed decoding of offset argument of mmap2 syscall on arm, sparc,
129 * Fixed decoding of pipe syscall on alpha and mips.
130 * Fixed decoding of pipe2 syscall on ia64, sh, sparc, and sparc64.
131 * Fixed decoding of signal mask argument of pselect6 syscall on x32.
132 * Fixed decoding of signal mask of rt_sigreturn syscall on aarch64, m68k,
134 * Fixed decoding of 4th argument of semctl indirect syscall.
135 * Fixed decoding of sa_restorer and sa_mask of sigaction syscall on m68k.
136 * Fixed decoding of statfs64 and fstatfs64 syscalls on arm eabi.
137 * Fixed decoding of struct dirent on x32.
138 * Fixed decoding of times syscall return value on mips n32 and x32.
139 * Fixed decoding of path argument of umount2 syscall
140 (addresses Debian bug #785050).
141 * Worked around a kernel bug in tracing privileged executables.
142 * Fixed various errors in mapping between syscall numbers and associated
143 information like the number of syscall arguments, the name of syscall,
146 Noteworthy changes in release 4.10 (2015-03-06)
147 ===============================================
150 * Added -yy option to print protocol and address information associated with
152 * Extended "-e read=set" and "-e write=set" options to cover sendmsg,
153 recvmsg, sendmmsg, and recvmmsg syscalls.
154 * Implemented full 32-bit decoding of ioctl commands
155 (addresses Debian bug #692913 and Fedora bug #902788).
156 * Implemented PTRACE_GETREGS API support on ia64.
157 * Implemented PTRACE_GETREGS API support on mips.
158 * Implemented PTRACE_GETREGSET API support on s390/s390x.
159 * Implemented decoding of getrandom and seccomp syscalls.
160 * Implemented full decoding of 64-bit capability sets.
161 * Implemented decoding of all prctl commands.
162 * Implemented decoding of parametrized ioctl commands.
163 * Implemented decoding of evdev ioctl commands.
164 * Implemented decoding of v4l ioctl commands.
165 * Implemented decoding of SG_IO v4 ioctl commands.
166 * Implemented decoding of FIFREEZE/FITHAW/FITRIM ioctl commands.
167 * Implemented decoding of FALLOC_FL_* fallocate flags.
168 * Implemented decoding of rt_sigreturn signal mask on aarch64,
170 * Enhanced socket decoder to support bluetooth sockets.
171 * Enhanced decoding of unlisted ioctl commands.
172 * Enhanced decoding of getsockopt and setsockopt syscall.
173 * Enhanced decoding of sysinfo syscall.
174 * Enhanced decoding of struct cmsghdr.
175 * Enhanced decoding of wait status.
176 * Enhanced aio support on non-x86 architectures by using external libaio.h.
177 * Added O_TMPFILE to the list of recognized open mode flags.
178 * Updated the list of filesystem type constants that is used in decoding
179 statfs family syscalls.
180 * Updated lists of CAP_*, PR_*, PTRACE_*, SCHED_*, SO_*, SOL_*, SWAP_FLAG_*,
182 * Updated lists of signal constants from Linux 3.19.
183 * Updated lists of errno constants from Linux 3.19.
184 * Updated lists of ioctl commands from Linux 3.9.
185 * Added new syscall entries to match Linux 3.19.
188 * Fixed various errors in mapping between syscall numbers and associated
189 information like the number of syscall arguments, the name of syscall,
191 * Fixed quoting issues in printing descriptors, filenames, network interface
192 names, struct utsname members, device/volume names of BLK* ioctl commands.
193 * Fixed uid_t/git_t decoding.
194 * Fixed potential out-of-bounds read issues in getdents/getdents64 decoders.
195 * Fixed potential open flags truncation on some architectures.
196 * Fixed decoding of struct ifreq.ifr_name.
197 * Fixed decoding of SIOCSIFNAME ioctl command.
198 * Fixed decoding of RENAME_* renameat2 flags.
199 * Fixed decoding of UTIME_NOW/UTIME_OMIT timeval structures.
200 * Fixed decoding of indirect ipc subcalls on some architectures.
201 * Fixed decoding of fanotify_mark syscall on 32-bit architectures.
202 * Fixed decoding of 32-bit stat structures on 64-bit architectures.
203 * Fixed decoding of 32-bit struct cmsghdr on 64-bit architectures.
204 * Fixed decoding of 32-bit preadv/pwritev offset on 64-bit architectures.
205 * Fixed decoding of sigreturn/rt_sigreturn signal mask on ia64, ppc, ppc64,
206 sparc, sparc64, mips, and s390.
207 * Fixed instruction pointer output (-i option) on architectures that support
208 several personalities.
209 * Fixed behaviour of "-e read=set" and "-e write=set" when read and write
211 * Fixed build on systems where struct sigaction has no sa_restorer member.
212 * Fixed build with uclibc and musl libc.
215 * Linux kernel >= 2.5.46 is required.
216 Older versions without a decent PTRACE_SETOPTIONS support will not work.
217 * On mips, linux kernel >= 2.6.15 is required.
218 Older versions without a decent PTRACE_GETREGS support will not work.
219 * On s390 and s390x, linux kernel >= 2.6.27 is required.
220 Older versions without a decent PTRACE_GETREGSET support will not work.
222 Noteworthy changes in release 4.9 (2014-08-15)
223 ==============================================
225 * Changes in behavior
226 * Disabled OABI support on ARM EABI systems by default,
227 added --enable-arm-oabi option to enable it at configure time.
230 * Added experimental -k option to print stack trace after each traced syscall.
231 * Added -w option to produce stats on syscall latency.
232 (addresses Debian bug #457497).
233 * Added ARC architecture support.
234 * Added PTRACE_GETREGS API support on PowerPC.
235 * Enhanced Bionic libc and musl libc support.
236 * Enhanced tracing of x86 personality processes on x86_64 and x32.
237 * Enhanced tracing of ARM personality processes on AArch64.
238 * Enhanced 32/64bit personality detection on PowerPC.
239 * Implemented decoding of add_key, ioprio_get, ioprio_set, kexec_load, keyctl,
240 renameat2, and request_key syscalls.
241 * Robustified decoding of select, pselect, and io_submit syscalls.
242 * Enhanced decoding of delete_module, fanotify_init, fanotify_mark, fcntl,
243 setdomainname, sethostname, setns, and sync_file_range syscalls.
244 * Enhanced decoding of signal bitmasks.
245 * Enhanced decoding of file descriptors.
246 * Enhanced siginfo_t decoding.
247 * Enhanced PF_NETLINK decoding.
248 * Updated CLOCK_* constants
249 (addresses Fedora bug #1088455).
250 * Added new syscall entries to match Linux 3.16.
253 * Added shmat and shmdt to the set of memory mapping related syscalls.
254 * Fixed detaching from stopped processes.
255 * Fixed fanotify_mark decoding on 32bit architectures.
256 * Fixed offset decoding in preadv and pwritev syscalls.
257 * Fixed select decoding for glibc in _FORTIFY_SOURCE mode.
258 * Fixed decoding of epoll_ctl syscall with EPOLL_CTL_DEL argument.
259 * Fixed build when <sys/ptrace.h> and <linux/ptrace.h> conflict
260 (addresses Fedora bug #993384).
261 * Miscellaneous corrections in the manual page.
262 (Addresses Debian bug #725987).
264 Noteworthy changes in release 4.8 (2013-06-03)
265 ==============================================
267 * Changes in behavior
268 * In case of normal strace termination, when the trace output is
269 redirected to a pipe, strace now closes it and waits for the pipe
270 process termination before exit.
273 * Implemented tracing using PTRACE_SEIZE API (when available).
274 * Implemented more reliable PTRACE_GETREGSET-based process personality
275 detection on x86-64 and x32 (when available).
276 * Added -e trace=memory option for tracing memory mapping related syscalls.
277 * Documented -b option.
278 * Allowed exit status messages to be suppressed by giving -q option twice.
279 * Added AArch64 architecture support
280 (addresses Debian bug #693074 and Fedora bug #969858).
281 * Added support for OpenRISC 1000, Meta, and Xtensa architectures.
282 * Added tilegx personality support for Tile.
283 * Enhanced support of NOMMU architectures.
284 * Enhanced decoding of getdents, mmap, perf_event_open, ptrace, and
286 * Added new syscall entries to match Linux 3.9.
287 * Regenerated the list of common ioctl names from Linux 3.9.
288 * Updated the list of errno constants.
289 * Updated lists of AF_*, MADV_*, MAP_*, MSG_*, MS_*, PF_*, PR_*,
290 PTRACE_O_*, and TCP_* constants.
291 * Implemented decoding of UBI ioctls.
292 * Removed redundant "*32" ioctl names.
295 * Fixed ERESTARTNOINTR leaking to userspace on ancient kernels
296 (addresses Fedora bug #659382).
297 * Fixed kernel release string parsing
298 (addresses Debian bug #702309).
299 * Fixed decoding of *xattr syscalls
300 (addresses Fedora bug #885233).
301 * Fixed handling of files with 64-bit inode numbers by 32-bit strace
302 (addresses Fedora bug #912790).
303 * Fixed tracing forks on SPARC.
304 * Fixed decoding of fadvise64, fallocate, ftruncate64, io_submit, pread,
305 preadv, pwrite, pwritev, readahead, sigaltstack, sync_file_range, sysctl,
306 and truncate64 syscalls.
307 * Fixed categories of multiple syscalls on most of supported architectures.
308 * Fixed decoding of non-native 32-bit personality recv[m]msg syscalls.
309 * Fixed decoding of multiple 32-bit personality syscalls on x32.
310 * Fixed decoding of long long syscall arguments on ARM, MIPS/o32, PowerPC,
311 S390x, and Tile architectures.
312 * Fixed semtimedop decoding on S390x.
313 * Fixed sram_alloc decoding on Blackfin.
314 * Fixed build when process_vm_readv is a stab.
315 * Fixed build with older versions of libaio.h.
317 Noteworthy changes in release 4.7 (2012-05-02)
318 ==============================================
320 * Changes in behavior
321 * strace no longer suspends waitpid until there is a child
322 for waitpid'ing process to collect status from.
323 * strace no longer detaches from a tracee which is supposed
325 * strace now issues a new message: "+++ exited with EXITCODE +++"
326 which shows exact moment strace got exit notification,
327 analogous to existing "+++ killed by SIG +++" message.
330 * Added x32 personality support (x86_64 architecture).
331 * Added -y and -P options to print file descriptor paths and
332 filter by those paths.
333 * Added -I option to control strace interactivity.
334 * Allowed -p option to take comma or whitespace-separated list of PIDs.
335 * Added strace_log_merge script helper to merge timestamped "strace -ff"
337 * Implemented decoding of clock_adjtime, get_robust_list, migrate_pages,
338 preadv, prlimit64, process_vm_readv, process_vm_writev, pwritev,
339 recvmmsg, recvmsg, rt_tgsigqueueinfo, sendmmsg, setns, set_robust_list,
340 sched_rr_get_interval, splice, syslog, tee and vmsplice syscalls.
341 * Enhanced decoding of capget, capset, getrlimit, flistxattr, io_submit,
342 listxattr, setrlimit and swapon syscalls.
343 * Implemented decoding of loop and mtd ioctls.
344 * Added syscall entries for new linux syscalls.
345 * Added syscall entries for direct socket system calls on powerpc.
346 * Updated the list of errno constants.
347 * Updated lists of MSG_*, STA_*, and TCP_* constants.
348 * Regenerated the list of ioctl names from Linux 3.3.
349 * Enhanced switching between processes with different personalities.
350 * Enhanced signals reporting by using short signal names.
351 * Made ERESTART* messages more descriptive.
352 * Made parsing of numbers from strings more robust.
353 * Added support for compat_statfs64 and statfs64.f_flags.
354 * Changed read of data blocks to use single process_vm_readv syscall
355 (when available) instead of several PTRACE_PEEKDATA operations.
356 * Changed read of registers on x86 and x86-64 to use single PTRACE_GETREGS
357 operation instead of several PTRACE_PEEKUSER operations.
358 * Applied various optimizations to make strace work faster.
361 * Implemented proper handling of real SIGTRAPs on kernels supporting
362 PTRACE_O_TRACESYSGOOD.
363 (Addresses Fedora bug #162774).
364 * Fixed sockaddr_un.sun_path name in decoded output.
365 (Addresses Debian bug #554946).
366 * Fixed to avoid potential core file clobbering on exit.
367 (Addresses Debian bug #656398).
368 * Fixed a typo in documentation.
369 (Addresses Debian bug #653309).
370 * Fixed decoding of timer id returned by timer_create.
371 * Fixed epoll_create1, epoll_wait and epoll_pwait decoding.
372 * Fixed *at syscalls flags decoding.
373 * Fixed ARM EABI 64-bit syscall's arguments decoding.
374 * Fixed semtimedop decoding on s390.
375 * Fixed osf_sigprocmask decoding on alpha.
376 * Fixed ipc and socket subcall decoding on several architectures.
377 * Corrected syscall entries for epoll_pwait, epoll_create, epoll_ctl,
378 epoll_wait, mincore, mlockall, prctl, reboot, sendfile, sendfile64,
379 sendmsg, sgetmask, ssetmask, swapon, tgkill and tkill syscalls.
380 * Corrected io_* syscall entries on ARM.
381 * Fixed PID prefix printing in "strace -oLOG -ff -p1 -p2 -p3" case.
382 * Fixed logging of unfinished lines in "strace -oLOG -ff" case.
383 * Fixed build when libaio-devel is not available.
384 * Fixed configure checks for PTRACE_* constants.
385 * Fixed compilation warnings remained on several architectures.
388 * Removed all non-Linux code. After years of neglect, that dead code
389 just hampered further strace development.
390 * Linux kernel >= 2.6.18 is recommended. Older versions might still
391 work but they haven't been thoroughly tested with this release.
393 Noteworthy changes in release 4.6 (2011-03-15)
394 ==============================================
396 * Changes in behavior
397 * Print diagnostic information about changes in personality mode to
398 standard error instead of standard output.
401 * Implemented a new method of following clone, fork, and vfork
402 syscalls using the Linux kernel's explicit facilities for tracing
403 creation of threads and child processes.
404 * Implemented CLONE_PARENT and CLONE_UNTRACED flags handling.
405 * Implemented decoding of TLS syscalls on m68k.
406 * Implemented biarch support on powerpc64.
407 * Implemented biarch support for getrlimit() and setrlimit().
408 * Implemented decoding of struct ucred in getsockopt SO_PEERCRED.
409 * Implemented SOL_SCTP socket options decoding.
410 * Added HDIO_* ioctl names.
411 (Addresses Debian bug #450953).
412 * Added LOOP_* ioctl names.
413 * Updated lists of CLOCK_*, CLONE_*, MS_*, and SOL_* constants
414 to match Linux 2.6.37.
415 * Updated the list of IPPROTO_* constants to match netinet/in.h.
416 * Implemented decoding of HDIO_* and BLK* ioctls.
417 * Added MicroBlaze architecture support.
418 * Added new syscall entries to match Linux 2.6.37.
419 * Regenerated list of ioctl names from Linux 2.6.37.
420 * Enhanced signal notification decoding.
421 * Documented -C and -D options.
424 * Fixed fetching syscall arguments on m68k.
425 * Fixed an error when judging whether a process has children.
426 * Fixed get/set_robust_list syscall numbers for powerpc.
427 * Fixed a corner case in printing clone flags.
428 * Fixed cross-compiling issues.
429 * Fixed build issues on powerpc64, SH and SPARC.
430 * Fixed syscall flags of fstatat*, mmap, mmap2, fadvise64*, swapoff,
431 fgetxattr, flistxattr, fremovexattr, epoll_create, fallocate,
432 fanotify_init, and fanotify_mark syscalls.
433 * Fixed decoding of get[ug]id, gete[ug]id and setfs[ug]id return values.
434 * Fixed biarch support in IO dumping.
435 * Fixed raw exit_group decoding.
436 * Fixed decoding of file descriptors on 64-bit architectures.
437 * Fixed a corner case in waitpid handling.
438 (Addresses Red Hat bug #663547).
439 * Fixed stat64 decoding on mips
440 (Addresses Debian bug #599028).
441 * Fixed misleading italics in the manual page.
442 (Addresses Debian bug #589323).
444 Noteworthy changes in release 4.5.20 (2010-04-13)
445 =================================================
448 * Implemented decoding of new linux syscalls: inotify_init1, recvmmsg.
449 * Implemented basic decoding of new linux syscalls: preadv, pwritev,
450 rt_tgsigqueueinfo, perf_event_open.
451 * Enhanced decoding of recently added syscalls on non-x86 architectures
452 by replacing a bare decoder with elaborate parsers enabled earlier
454 * Implemented -C option to combine regular and -c output.
455 (Addresses Debian bug #466196)
456 * Enhanced decoding of mbind and mremap syscalls.
457 * Enhanced SOL_PACKET socket options decoding.
458 * Regenerated list of ioctl names from linux 2.6.33.
459 * Added TILE architecture support.
462 * Fixed build with Linux kernel headers 2.6.32-rc5+.
463 (Addresses Debian bug #560516 and Fedora bug #539044)
464 * Fixed build on mips.
465 * Fixed handling of Linux systems without struct statfs64.
466 * Fixed reporting signal mask by sigreturn on powerpc.
467 * Fixed potential stack buffer overflow in select decoder.
468 (Addresses Fedora bug #556678)
469 * Corrected msgsnd indirect ipccall decoding.
470 * Corrected decoding of 64bit syscalls.
471 (Addresses Debian bug #570603)
472 * Corrected getsockopt decoding on architectures where
473 sizeof(long) > sizeof(int).
474 (Addresses Debian bug #494844)
475 * Corrected decoding of epoll_pwait.
476 (Addresses Debian bug #513014)
477 * Corrected handling of killed threads.
479 Noteworthy changes in release 4.5.19 (2009-10-21)
480 =================================================
482 * Changes in behavior
483 * When command exits, strace now exits with the same exit status.
484 If command is terminated by a signal, strace terminates itself
485 with the same signal, so that strace can be used as a wrapper
486 process transparent to the invoking parent process.
487 When using -p option, the exit status of strace is zero unless
488 there was an unexpected error in doing the tracing.
489 (Addresses Fedora bug #105371 and Debian bug #37665)
492 * Implemented decoding of new Linux syscalls: accept4, dup3,
493 epoll_create1, eventfd2, inotify_init1, pipe2, signalfd4.
494 * Implemented decoding of socket type flags introduced in Linux 2.6.27.
495 * Implemented decoding of accept4 socketcall.
496 * Enhanced prctl decoding.
497 * Enhanced nanosleep decoding.
498 * Enhanced ptrace decoding.
499 * Enhanced futex decoding.
500 * Enhanced CAP_* decoding.
501 * Enhanced SIOCS* ioctls decoding.
502 * Enhanced fcntl F_* flags decoding.
503 * Enhanced semop/semtimedop decoding.
504 * Updated ARM architecture support.
505 * Added Blackfin architecture support.
506 * Added AVR32 architecture support.
507 * Added CRIS architecture support.
508 * Made strace detect when traced process suddenly disappeared.
511 * Fixed syscall numbers for tee and sync_file_range.
512 (Addresses Debian bug #503124)
513 * Fixed several bugs in strings decoder, including potential heap
515 (Addresses Fedora bugs #470529, #478324 and #511035)
516 * Marked sendfile(2) as a network syscall.
517 (Addresses Debian bug #509499)
518 * Fixed accept(2) decoding.
519 (Addresses Debian bug #507573)
520 * Fixed sigtimedwait(2) decoding.
521 * Fixed build on ARM EABI.
522 (Addresses Debian bugs #520084 and #535564, and Fedora bug #507576)
523 * Fixed display of 32-bit fcntl(F_SETLK) on 64-bit architectures.
524 (Addresses Red Hat bug #471169)
525 * Fixed display of 32-bit argv array on 64-bit architectures.
526 (Addresses Fedora bug #519480)
527 * Fixed display of 32-bit struct sigaction on 64-bit architectures.
528 * Fixed HPPA architecture support.
529 (Addresses Debian bugs #437928 and #546619)
534 * Support new Linux/PPC system call subpage_prot and PROT_SAO flag.
535 * In sigaction system call, display sa_flags value along with SIG_DFL/SIG_IGN.
540 * -F is now deprecated, -f has traced vfork too on Linux for a long time now.
541 * Print O_CLOEXEC, MSG_CMSG_CLOEXEC flag bits.
542 * Improved output for prctl system call on Linux.
543 * Improved support for Linux/ARM.
544 * SA_NOMASK is now spelled SA_NODEFER, and SA_ONESHOT is spelled SA_RESETHAND.
549 * Improved output for delete_module, futex, and mbind system calls on Linux.
550 * Improved output for SG_IO ioctls on Linux.
551 * Support new Linux system calls move_pages, utimensat, signalfd, timerfd,
552 eventfd, getcpu, epoll_pwait.
557 * Several biarch improvements.
558 * Improved output for adjtimex, sysctl, quotactl, mount, umount.
559 * Support new Linux system calls *at, inotify*, pselect6, ppoll and unshare.
564 * Accept numeric system calls in -e.
569 * Introduce "-e trace=desc".
574 * Better x86-64 support for IA32 processes.
575 * Update PowerPC system calls.
576 * Better printing for Linux aio system calls.
580 * Quick fix release for build issues.
581 * One fix for Linux/ARM system call table.
586 * Print fault address for SIGSEGV/SIGBUS signals when available.
591 * Improve socket ioctl printing.
592 * Update Linux/IA64 syscall list.
593 * Fix Linux/x86-64 syscall argument extraction for 32-bit processes.
594 * Improve mount flags printing.
595 * Support symbolic printing of x86_64 arch_prctl parameters.
600 * Update syscall tables for Alpha, ARM, HPPA.
601 * Support new Linux syscalls mbind, set_mempolicy, get_mempolicy, waitid.
602 * Support Linux syscalls fadvise64, fadvise64_64, and epoll_*.
603 * Improve ioctl command name matching.
604 * Print RTC_* ioctl structure contents.
605 * Support newer RLIMIT_* values.
606 * Print struct cmsghdr details in sendmsg.
611 * Print attribute values in *xattr system calls on Linux.
612 * Include pread and pwrite calls in -e read and -e write tracing.
613 * Update SO_* and IP_* value lists and add IPV6_* values for socket options.
614 * Print clock_t values symbolically in Linux clock_* system calls.
618 * Bug fixes, Linux ioctl updates.
619 * David Miller contributed support for Linux/SPARC64.
627 * Update Linux ioctl lists.
628 * Update PF_* and AF_* value lists.
629 * The 4.5.3 -p behavior for NPTL threads applies only under -f, and got fixed.
634 * On Linux using NPTL threads, -p will now attach to all threads in a process.
635 * Handle new mq_* system calls in Linux 2.6.6 and later.
640 * Report some new VM_* bit values on Linux.
641 * Better output for Linux sched_* system calls.
646 * Display multiple ioctl name matches on Linux.
650 * New port to AMD's x86-64 architecture. One strace binary can
651 handle both new x86-64 and old i386 processes.
652 * Fixed support for LFS64 calls.
653 * New switch -E to add/remove environment variables for the command.
654 * Merged s390/s390x port.
655 * Trace an unbounded number of processes.
656 * Handle numerous new system calls in Linux 2.5, and new threads semantics.
657 * Fixed bugs with attach/detach leaving things stopped.
658 * Fixed traced process seeing ECHILD despite live, traced children
659 in waitpid calls with WNOHANG.
660 * Stuart Menefy contributed a port to Linux/SH.
661 * Stephen Thomas contributed a port to Linux/SH64.
662 * Many other bug fixes.
666 * Fix Linux/ia64 support, looks like someone renamed a few things on us
667 * Fix the ioctl setup for Linux, turned out it did not really work.
668 Improve the ioctl extracter as well so we decode some more ones.
672 * compile fixes for Linux/mips
676 * Linux ia64 and hppa ports added
677 * The usual Linux syscall updates (includes 32bit uid/gid support),
678 * Linux ioctl list updated
679 * Support IPv6 scope ids
680 * FreeBSD/i386 port added
681 * UnixWare and Solaris updates
682 * Better support for tracing multithreaded processes in Linux
686 * Compiles on glibc2.0 systems again
687 * Linux/S390 port added
688 * The usual Linux syscall updates
689 * we can follow fork on arm now
693 * Linux/MIPS port added
694 * Lots of Linux updates again
695 * Improved IPv6 support
701 * Compiles on glibc2.0 systems again
705 * Get stat structure properly on Linux 64bit archs
706 * Personalities work again
707 * Compile correctly on SunOS again
713 * Linux (ultra)sparc fixes
720 * add support for more Linux architectures (powerpc, sparc, arm)
721 * support lots more Linux syscalls
722 * fix signal handling
723 * add IPX and IPIP support
724 * check stray syscall after execv
725 * fix hanging children
727 Changes in version 3.1
728 ======================
731 * Linux 68k is supported
732 * Linux alpha is supported
733 * configure is upgraded to autoconf 2.x
734 * using -f in combination with -e now works correctly
735 * output can be piped to a program
736 * tracing setuid programs works better
737 * it is now reasonable to install strace setuid to root in some circumstances
738 * new useful tracing names like file and process to trace whole
739 classes of system calls, e.g. -efile traces all system calls that
740 take a file name as an argument
741 * IPC calls on SunOS 4.1.x are decoded
742 * Linux program memory is reliably dereferenced
743 * Linux decodes at least the name of all syscalls as of pre2.0.4
744 * various cosmetic changes and bug fixes
746 Changes from versions 2.x to version 3.0
747 ========================================
749 * filename arguments are neither abbreviated nor stringified
750 * string arguments are now true C strings using octal instead of hex by default
751 * preprocessor constants are never shortened (e.g. was RDONLY => now O_RDONLY)
752 * by default the output for multiple processes now goes into one file
753 * all structures, vectors, bitsets, etc. use consistent output formats
754 * the -c option now means count calls, -i does what the old -c used to do
756 New Features in version 3.0
757 ===========================
759 * non-ascii strings can be optionally printed entirely in hex
760 * the output format is readable when mutiple processes are generating output
761 * exit values are printed in an alignment column
762 * is is possible to suppress messages about attaching and detaching
763 * various tracing features can be enabled on a per syscall/signal/desc basis
764 * selective tracing of syscalls
765 * selective printing of syscall structures
766 * selective abbreviation of long structures on a per syscall basis
767 * selective printing of raw syscall arguments and results
768 * selective tracing of signals
769 * selective dumping of all I/O read from file descriptors
770 * selective dumping of all I/O written to file descriptors
771 * optional counting of time, calls, and errors for each syscall
projects / strace / blob