1 Noteworthy changes in release ?.?? (????-??-??)
2 ===============================================
4 Noteworthy changes in release 4.12 (2016-05-31)
5 ===============================================
8 * Implemented simultaneous use of -p option and tracing of a command.
9 (addresses Debian bug #549942).
10 * Implemented caching of netlink conversations to reduce amount of time
11 spent in decoding socket details in -yy mode.
12 * Implemented -yy mode decoding of protocol:portid pairs associated with
13 netlink socket descriptors.
14 * Implemented decoding of copy_file_range, preadv2, and pwritev2 syscalls.
15 * Implemented dumping of preadv, preadv2, pwritev, pwritev2, and vmsplice
17 * Implemented decoding of BTRFS_* and UFFDIO_* ioctl commands.
18 * Enhanced decoding of BLK*, EVIOC*, RTC_*, and VIDIOC_* ioctl commands.
19 * Enhanced decoding of fstatfs, fstatfs64, get_mempolicy, getdents,
20 getdents64, getgroups, getpriority, kill, mbind, migrate_pages, mknod,
21 mknodat, personality, poll, ppoll, quotactl, rt_sigpending,
22 rt_sigqueueinfo, rt_sigtimedwait, rt_tgsigqueueinfo, sched_getaffinity,
23 sched_setaffinity, seccomp, set_mempolicy, setgroups, setpriority, statfs,
24 statfs64, tgkill, waitid, and xattr family syscalls.
25 * Enhanced decoding of getxpid, getxuid, and getxgid syscalls on alpha.
26 * Enhanced decoding of pipe syscall on alpha, ia64, mips, sh, and sparc.
27 * Added decoding of bind, listen, and setsockopt direct syscalls on sparc.
28 * Added decoding of osf_statfs64 and osf_fstatfs64 syscalls on alpha.
29 * Added decoding of fadvise64 and fadvise64_64 on s390.
30 * Updated lists of AF_*, BPF_MAP_TYPE_*, CLONE_*, EPOLL*, IPV6_*, MADV_*,
31 MSG_*, PTRACE_*, SEGV_*, SO_*, SOL_*, *_MAGIC, and quotactl constants.
32 * Updated lists of ioctl commands from Linux 4.6.
35 * Fixed build on arc, metag, nios2, or1k, and tile architectures.
36 * Fixed decoding of 32-bit times syscall return value on 64-bit architectures.
37 * Fixed decoding of mlock2 syscall on sparc.
38 * Fixed decoding of osf_shmat syscall on alpha.
39 * Fixed decoding of syscalls unknown to the kernel on s390/s390x.
40 (addresses Debian bug #485979 and Fedora bug #1298294).
41 * Fixed decoding of preadv syscall in case of short read.
42 * Fixed decoding and dumping of readv syscall in case of short read.
43 * Fixed dumping of recvmsg and recvmmsg syscalls in case of short read.
44 * Fixed decoding of mincore syscall's last argument.
45 * Fixed remaining errors in mapping between syscall numbers and numbers
47 * Applied various fixes to strace-graph script.
49 Noteworthy changes in release 4.11 (2015-12-21)
50 ===============================================
53 * Some syscalls have different names depending on architecture and
54 personality. In these cases, syscall filtering and printing now
55 consistently uses the names that match corresponding __NR_* kernel
56 macros of the tracee's architecture and personality.
57 * Added strace prefix to all diagnostic messages.
60 * Enhanced and extended test suite.
61 * Implemented reliable tracing of processes whose personality differs
62 from the personality of strace, fixed decoding of 32-bit personality
63 syscalls on 64-bit architectures.
64 * When some data referenced by syscall arguments is irrelevant or cannot
65 be read from tracee's memory, strace now prints its address consistently.
66 * When a syscall is restarted using restart_syscall mechanism, strace now
67 shows the syscall name on architectures that expose this information.
68 * Print values returned by epoll_create1, eventfd, eventfd2, fanotify_init,
69 inotify_init1, perf_event_open, pipe, pipe2, signalfd, signalfd4, socket,
70 socketpair, timerfd, and timerfd_create syscalls, as well as F_DUPFD and
71 F_DUPFD_CLOEXEC fcntl commands, as file descriptors.
72 * Optimized decoding of indirect socket syscalls.
73 * Implemented decoding of nanoseconds along with seconds in stat family
74 syscalls (addresses Fedora bug #1251176).
75 * Implemented decoding of struct statfs.f_flags in statfs syscall.
76 * Implemented decoding of siginfo_t.si_syscall and siginfo_t.si_arch
78 * Implemented decoding of indirect syscall on mips o32.
79 * Implemented decoding of IPPROTO_IP control messages.
80 * Implemented decoding of setsockopt syscall multicast arguments.
81 * Enhanced decoding of struct sigevent.
82 * Enhanced decoding of block, loop, mtd, ptp, rtc, SG_IO, socket, tty,
83 and v4l2 ioctl syscall arguments.
84 * Enhanced decoding of epoll_create, fcntl, fcntl64, futex, getdents,
85 getdents64, getsockopt, io_*, mount, msgctl, prctl, quotactl, recvfrom,
86 sendfile, setsockopt, and shmctl syscalls.
87 * Implemented decoding of bpf, execveat, ioperm, iopl, kcmp, kexec_file_load,
88 lookup_dcookie, membarrier, memfd_create, mlock2, name_to_handle_at,
89 open_by_handle_at, sched_getattr, sched_setattr, and userfaultfd syscalls.
90 * Updated lists of AF_*, EPOLL_*, FALLOC_FL_*, F_*, INPUT_PROP_*, IPPROTO_*,
91 IPV6_*, IP_*, KEY_*, LOCK_*, MNT_*, MS_*, PACKET_*, PERF_FLAG_*, PF_*,
92 PR_*, PTRACE_O_*, RENAME_*, SCTP_*, SECBIT_*, SO_*, TCP_*, and siginfo_t
94 * Added Nios II architecture support.
95 * Added new syscall entries to match Linux 4.4.
98 * Fixed potential short read of strings from tracee's memory.
99 * Fixed -qq option in conjunction with -o option.
100 * Fixed filtering of <unavailable> syscalls.
101 * Fixed decoding of ioctl syscall command on aarch64 and 32-bit architectures
102 with 64-bit aligned structures.
103 * Fixed decoding of eventfd2, epoll_create1, signalfd4, and sync_file_range2
104 syscall flags arguments.
105 * Fixed decoding of 4th argument of clock_nanosleep syscall.
106 * Fixed decoding of getpagesize syscall on m68k.
107 * Fixed decoding of getrandom and seccomp syscalls on aarch64.
108 * Fixed decoding of timezone argument of gettimeofday and settimeofday
110 * Fixed decoding of offset argument of mmap2 syscall on arm, sparc,
112 * Fixed decoding of pipe syscall on alpha and mips.
113 * Fixed decoding of pipe2 syscall on ia64, sh, sparc, and sparc64.
114 * Fixed decoding of signal mask argument of pselect6 syscall on x32.
115 * Fixed decoding of signal mask of rt_sigreturn syscall on aarch64, m68k,
117 * Fixed decoding of 4th argument of semctl indirect syscall.
118 * Fixed decoding of sa_restorer and sa_mask of sigaction syscall on m68k.
119 * Fixed decoding of statfs64 and fstatfs64 syscalls on arm eabi.
120 * Fixed decoding of struct dirent on x32.
121 * Fixed decoding of times syscall return value on mips n32 and x32.
122 * Fixed decoding of path argument of umount2 syscall
123 (addresses Debian bug #785050).
124 * Worked around a kernel bug in tracing privileged executables.
125 * Fixed various errors in mapping between syscall numbers and associated
126 information like the number of syscall arguments, the name of syscall,
129 Noteworthy changes in release 4.10 (2015-03-06)
130 ===============================================
133 * Added -yy option to print protocol and address information associated with
135 * Extended "-e read=set" and "-e write=set" options to cover sendmsg,
136 recvmsg, sendmmsg, and recvmmsg syscalls.
137 * Implemented full 32-bit decoding of ioctl commands
138 (addresses Debian bug #692913 and Fedora bug #902788).
139 * Implemented PTRACE_GETREGS API support on ia64.
140 * Implemented PTRACE_GETREGS API support on mips.
141 * Implemented PTRACE_GETREGSET API support on s390/s390x.
142 * Implemented decoding of getrandom and seccomp syscalls.
143 * Implemented full decoding of 64-bit capability sets.
144 * Implemented decoding of all prctl commands.
145 * Implemented decoding of parametrized ioctl commands.
146 * Implemented decoding of evdev ioctl commands.
147 * Implemented decoding of v4l ioctl commands.
148 * Implemented decoding of SG_IO v4 ioctl commands.
149 * Implemented decoding of FIFREEZE/FITHAW/FITRIM ioctl commands.
150 * Implemented decoding of FALLOC_FL_* fallocate flags.
151 * Implemented decoding of rt_sigreturn signal mask on aarch64,
153 * Enhanced socket decoder to support bluetooth sockets.
154 * Enhanced decoding of unlisted ioctl commands.
155 * Enhanced decoding of getsockopt and setsockopt syscall.
156 * Enhanced decoding of sysinfo syscall.
157 * Enhanced decoding of struct cmsghdr.
158 * Enhanced decoding of wait status.
159 * Enhanced aio support on non-x86 architectures by using external libaio.h.
160 * Added O_TMPFILE to the list of recognized open mode flags.
161 * Updated the list of filesystem type constants that is used in decoding
162 statfs family syscalls.
163 * Updated lists of CAP_*, PR_*, PTRACE_*, SCHED_*, SO_*, SOL_*, SWAP_FLAG_*,
165 * Updated lists of signal constants from Linux 3.19.
166 * Updated lists of errno constants from Linux 3.19.
167 * Updated lists of ioctl commands from Linux 3.9.
168 * Added new syscall entries to match Linux 3.19.
171 * Fixed various errors in mapping between syscall numbers and associated
172 information like the number of syscall arguments, the name of syscall,
174 * Fixed quoting issues in printing descriptors, filenames, network interface
175 names, struct utsname members, device/volume names of BLK* ioctl commands.
176 * Fixed uid_t/git_t decoding.
177 * Fixed potential out-of-bounds read issues in getdents/getdents64 decoders.
178 * Fixed potential open flags truncation on some architectures.
179 * Fixed decoding of struct ifreq.ifr_name.
180 * Fixed decoding of SIOCSIFNAME ioctl command.
181 * Fixed decoding of RENAME_* renameat2 flags.
182 * Fixed decoding of UTIME_NOW/UTIME_OMIT timeval structures.
183 * Fixed decoding of indirect ipc subcalls on some architectures.
184 * Fixed decoding of fanotify_mark syscall on 32-bit architectures.
185 * Fixed decoding of 32-bit stat structures on 64-bit architectures.
186 * Fixed decoding of 32-bit struct cmsghdr on 64-bit architectures.
187 * Fixed decoding of 32-bit preadv/pwritev offset on 64-bit architectures.
188 * Fixed decoding of sigreturn/rt_sigreturn signal mask on ia64, ppc, ppc64,
189 sparc, sparc64, mips, and s390.
190 * Fixed instruction pointer output (-i option) on architectures that support
191 several personalities.
192 * Fixed behaviour of "-e read=set" and "-e write=set" when read and write
194 * Fixed build on systems where struct sigaction has no sa_restorer member.
195 * Fixed build with uclibc and musl libc.
198 * Linux kernel >= 2.5.46 is required.
199 Older versions without a decent PTRACE_SETOPTIONS support will not work.
200 * On mips, linux kernel >= 2.6.15 is required.
201 Older versions without a decent PTRACE_GETREGS support will not work.
202 * On s390 and s390x, linux kernel >= 2.6.27 is required.
203 Older versions without a decent PTRACE_GETREGSET support will not work.
205 Noteworthy changes in release 4.9 (2014-08-15)
206 ==============================================
208 * Changes in behavior
209 * Disabled OABI support on ARM EABI systems by default,
210 added --enable-arm-oabi option to enable it at configure time.
213 * Added experimental -k option to print stack trace after each traced syscall.
214 * Added -w option to produce stats on syscall latency.
215 (addresses Debian bug #457497).
216 * Added ARC architecture support.
217 * Added PTRACE_GETREGS API support on PowerPC.
218 * Enhanced Bionic libc and musl libc support.
219 * Enhanced tracing of x86 personality processes on x86_64 and x32.
220 * Enhanced tracing of ARM personality processes on AArch64.
221 * Enhanced 32/64bit personality detection on PowerPC.
222 * Implemented decoding of add_key, ioprio_get, ioprio_set, kexec_load, keyctl,
223 renameat2, and request_key syscalls.
224 * Robustified decoding of select, pselect, and io_submit syscalls.
225 * Enhanced decoding of delete_module, fanotify_init, fanotify_mark, fcntl,
226 setdomainname, sethostname, setns, and sync_file_range syscalls.
227 * Enhanced decoding of signal bitmasks.
228 * Enhanced decoding of file descriptors.
229 * Enhanced siginfo_t decoding.
230 * Enhanced PF_NETLINK decoding.
231 * Updated CLOCK_* constants
232 (addresses Fedora bug #1088455).
233 * Added new syscall entries to match Linux 3.16.
236 * Added shmat and shmdt to the set of memory mapping related syscalls.
237 * Fixed detaching from stopped processes.
238 * Fixed fanotify_mark decoding on 32bit architectures.
239 * Fixed offset decoding in preadv and pwritev syscalls.
240 * Fixed select decoding for glibc in _FORTIFY_SOURCE mode.
241 * Fixed decoding of epoll_ctl syscall with EPOLL_CTL_DEL argument.
242 * Fixed build when <sys/ptrace.h> and <linux/ptrace.h> conflict
243 (addresses Fedora bug #993384).
244 * Miscellaneous corrections in the manual page.
245 (Addresses Debian bug #725987).
247 Noteworthy changes in release 4.8 (2013-06-03)
248 ==============================================
250 * Changes in behavior
251 * In case of normal strace termination, when the trace output is
252 redirected to a pipe, strace now closes it and waits for the pipe
253 process termination before exit.
256 * Implemented tracing using PTRACE_SEIZE API (when available).
257 * Implemented more reliable PTRACE_GETREGSET-based process personality
258 detection on x86-64 and x32 (when available).
259 * Added -e trace=memory option for tracing memory mapping related syscalls.
260 * Documented -b option.
261 * Allowed exit status messages to be suppressed by giving -q option twice.
262 * Added AArch64 architecture support
263 (addresses Debian bug #693074 and Fedora bug #969858).
264 * Added support for OpenRISC 1000, Meta, and Xtensa architectures.
265 * Added tilegx personality support for Tile.
266 * Enhanced support of NOMMU architectures.
267 * Enhanced decoding of getdents, mmap, perf_event_open, ptrace, and
269 * Added new syscall entries to match Linux 3.9.
270 * Regenerated the list of common ioctl names from Linux 3.9.
271 * Updated the list of errno constants.
272 * Updated lists of AF_*, MADV_*, MAP_*, MSG_*, MS_*, PF_*, PR_*,
273 PTRACE_O_*, and TCP_* constants.
274 * Implemented decoding of UBI ioctls.
275 * Removed redundant "*32" ioctl names.
278 * Fixed ERESTARTNOINTR leaking to userspace on ancient kernels
279 (addresses Fedora bug #659382).
280 * Fixed kernel release string parsing
281 (addresses Debian bug #702309).
282 * Fixed decoding of *xattr syscalls
283 (addresses Fedora bug #885233).
284 * Fixed handling of files with 64-bit inode numbers by 32-bit strace
285 (addresses Fedora bug #912790).
286 * Fixed tracing forks on SPARC.
287 * Fixed decoding of fadvise64, fallocate, ftruncate64, io_submit, pread,
288 preadv, pwrite, pwritev, readahead, sigaltstack, sync_file_range, sysctl,
289 and truncate64 syscalls.
290 * Fixed categories of multiple syscalls on most of supported architectures.
291 * Fixed decoding of non-native 32-bit personality recv[m]msg syscalls.
292 * Fixed decoding of multiple 32-bit personality syscalls on x32.
293 * Fixed decoding of long long syscall arguments on ARM, MIPS/o32, PowerPC,
294 S390x, and Tile architectures.
295 * Fixed semtimedop decoding on S390x.
296 * Fixed sram_alloc decoding on Blackfin.
297 * Fixed build when process_vm_readv is a stab.
298 * Fixed build with older versions of libaio.h.
300 Noteworthy changes in release 4.7 (2012-05-02)
301 ==============================================
303 * Changes in behavior
304 * strace no longer suspends waitpid until there is a child
305 for waitpid'ing process to collect status from.
306 * strace no longer detaches from a tracee which is supposed
308 * strace now issues a new message: "+++ exited with EXITCODE +++"
309 which shows exact moment strace got exit notification,
310 analogous to existing "+++ killed by SIG +++" message.
313 * Added x32 personality support (x86_64 architecture).
314 * Added -y and -P options to print file descriptor paths and
315 filter by those paths.
316 * Added -I option to control strace interactivity.
317 * Allowed -p option to take comma or whitespace-separated list of PIDs.
318 * Added strace_log_merge script helper to merge timestamped "strace -ff"
320 * Implemented decoding of clock_adjtime, get_robust_list, migrate_pages,
321 preadv, prlimit64, process_vm_readv, process_vm_writev, pwritev,
322 recvmmsg, recvmsg, rt_tgsigqueueinfo, sendmmsg, setns, set_robust_list,
323 sched_rr_get_interval, splice, syslog, tee and vmsplice syscalls.
324 * Enhanced decoding of capget, capset, getrlimit, flistxattr, io_submit,
325 listxattr, setrlimit and swapon syscalls.
326 * Implemented decoding of loop and mtd ioctls.
327 * Added syscall entries for new linux syscalls.
328 * Added syscall entries for direct socket system calls on powerpc.
329 * Updated the list of errno constants.
330 * Updated lists of MSG_*, STA_*, and TCP_* constants.
331 * Regenerated the list of ioctl names from Linux 3.3.
332 * Enhanced switching between processes with different personalities.
333 * Enhanced signals reporting by using short signal names.
334 * Made ERESTART* messages more descriptive.
335 * Made parsing of numbers from strings more robust.
336 * Added support for compat_statfs64 and statfs64.f_flags.
337 * Changed read of data blocks to use single process_vm_readv syscall
338 (when available) instead of several PTRACE_PEEKDATA operations.
339 * Changed read of registers on x86 and x86-64 to use single PTRACE_GETREGS
340 operation instead of several PTRACE_PEEKUSER operations.
341 * Applied various optimizations to make strace work faster.
344 * Implemented proper handling of real SIGTRAPs on kernels supporting
345 PTRACE_O_TRACESYSGOOD.
346 (Addresses Fedora bug #162774).
347 * Fixed sockaddr_un.sun_path name in decoded output.
348 (Addresses Debian bug #554946).
349 * Fixed to avoid potential core file clobbering on exit.
350 (Addresses Debian bug #656398).
351 * Fixed a typo in documentation.
352 (Addresses Debian bug #653309).
353 * Fixed decoding of timer id returned by timer_create.
354 * Fixed epoll_create1, epoll_wait and epoll_pwait decoding.
355 * Fixed *at syscalls flags decoding.
356 * Fixed ARM EABI 64-bit syscall's arguments decoding.
357 * Fixed semtimedop decoding on s390.
358 * Fixed osf_sigprocmask decoding on alpha.
359 * Fixed ipc and socket subcall decoding on several architectures.
360 * Corrected syscall entries for epoll_pwait, epoll_create, epoll_ctl,
361 epoll_wait, mincore, mlockall, prctl, reboot, sendfile, sendfile64,
362 sendmsg, sgetmask, ssetmask, swapon, tgkill and tkill syscalls.
363 * Corrected io_* syscall entries on ARM.
364 * Fixed PID prefix printing in "strace -oLOG -ff -p1 -p2 -p3" case.
365 * Fixed logging of unfinished lines in "strace -oLOG -ff" case.
366 * Fixed build when libaio-devel is not available.
367 * Fixed configure checks for PTRACE_* constants.
368 * Fixed compilation warnings remained on several architectures.
371 * Removed all non-Linux code. After years of neglect, that dead code
372 just hampered further strace development.
373 * Linux kernel >= 2.6.18 is recommended. Older versions might still
374 work but they haven't been thoroughly tested with this release.
376 Noteworthy changes in release 4.6 (2011-03-15)
377 ==============================================
379 * Changes in behavior
380 * Print diagnostic information about changes in personality mode to
381 standard error instead of standard output.
384 * Implemented a new method of following clone, fork, and vfork
385 syscalls using the Linux kernel's explicit facilities for tracing
386 creation of threads and child processes.
387 * Implemented CLONE_PARENT and CLONE_UNTRACED flags handling.
388 * Implemented decoding of TLS syscalls on m68k.
389 * Implemented biarch support on powerpc64.
390 * Implemented biarch support for getrlimit() and setrlimit().
391 * Implemented decoding of struct ucred in getsockopt SO_PEERCRED.
392 * Implemented SOL_SCTP socket options decoding.
393 * Added HDIO_* ioctl names.
394 (Addresses Debian bug #450953).
395 * Added LOOP_* ioctl names.
396 * Updated lists of CLOCK_*, CLONE_*, MS_*, and SOL_* constants
397 to match Linux 2.6.37.
398 * Updated the list of IPPROTO_* constants to match netinet/in.h.
399 * Implemented decoding of HDIO_* and BLK* ioctls.
400 * Added MicroBlaze architecture support.
401 * Added new syscall entries to match Linux 2.6.37.
402 * Regenerated list of ioctl names from Linux 2.6.37.
403 * Enhanced signal notification decoding.
404 * Documented -C and -D options.
407 * Fixed fetching syscall arguments on m68k.
408 * Fixed an error when judging whether a process has children.
409 * Fixed get/set_robust_list syscall numbers for powerpc.
410 * Fixed a corner case in printing clone flags.
411 * Fixed cross-compiling issues.
412 * Fixed build issues on powerpc64, SH and SPARC.
413 * Fixed syscall flags of fstatat*, mmap, mmap2, fadvise64*, swapoff,
414 fgetxattr, flistxattr, fremovexattr, epoll_create, fallocate,
415 fanotify_init, and fanotify_mark syscalls.
416 * Fixed decoding of get[ug]id, gete[ug]id and setfs[ug]id return values.
417 * Fixed biarch support in IO dumping.
418 * Fixed raw exit_group decoding.
419 * Fixed decoding of file descriptors on 64-bit architectures.
420 * Fixed a corner case in waitpid handling.
421 (Addresses Red Hat bug #663547).
422 * Fixed stat64 decoding on mips
423 (Addresses Debian bug #599028).
424 * Fixed misleading italics in the manual page.
425 (Addresses Debian bug #589323).
427 Noteworthy changes in release 4.5.20 (2010-04-13)
428 =================================================
431 * Implemented decoding of new linux syscalls: inotify_init1, recvmmsg.
432 * Implemented basic decoding of new linux syscalls: preadv, pwritev,
433 rt_tgsigqueueinfo, perf_event_open.
434 * Enhanced decoding of recently added syscalls on non-x86 architectures
435 by replacing a bare decoder with elaborate parsers enabled earlier
437 * Implemented -C option to combine regular and -c output.
438 (Addresses Debian bug #466196)
439 * Enhanced decoding of mbind and mremap syscalls.
440 * Enhanced SOL_PACKET socket options decoding.
441 * Regenerated list of ioctl names from linux 2.6.33.
442 * Added TILE architecture support.
445 * Fixed build with Linux kernel headers 2.6.32-rc5+.
446 (Addresses Debian bug #560516 and Fedora bug #539044)
447 * Fixed build on mips.
448 * Fixed handling of Linux systems without struct statfs64.
449 * Fixed reporting signal mask by sigreturn on powerpc.
450 * Fixed potential stack buffer overflow in select decoder.
451 (Addresses Fedora bug #556678)
452 * Corrected msgsnd indirect ipccall decoding.
453 * Corrected decoding of 64bit syscalls.
454 (Addresses Debian bug #570603)
455 * Corrected getsockopt decoding on architectures where
456 sizeof(long) > sizeof(int).
457 (Addresses Debian bug #494844)
458 * Corrected decoding of epoll_pwait.
459 (Addresses Debian bug #513014)
460 * Corrected handling of killed threads.
462 Noteworthy changes in release 4.5.19 (2009-10-21)
463 =================================================
465 * Changes in behavior
466 * When command exits, strace now exits with the same exit status.
467 If command is terminated by a signal, strace terminates itself
468 with the same signal, so that strace can be used as a wrapper
469 process transparent to the invoking parent process.
470 When using -p option, the exit status of strace is zero unless
471 there was an unexpected error in doing the tracing.
472 (Addresses Fedora bug #105371 and Debian bug #37665)
475 * Implemented decoding of new Linux syscalls: accept4, dup3,
476 epoll_create1, eventfd2, inotify_init1, pipe2, signalfd4.
477 * Implemented decoding of socket type flags introduced in Linux 2.6.27.
478 * Implemented decoding of accept4 socketcall.
479 * Enhanced prctl decoding.
480 * Enhanced nanosleep decoding.
481 * Enhanced ptrace decoding.
482 * Enhanced futex decoding.
483 * Enhanced CAP_* decoding.
484 * Enhanced SIOCS* ioctls decoding.
485 * Enhanced fcntl F_* flags decoding.
486 * Enhanced semop/semtimedop decoding.
487 * Updated ARM architecture support.
488 * Added Blackfin architecture support.
489 * Added AVR32 architecture support.
490 * Added CRIS architecture support.
491 * Made strace detect when traced process suddenly disappeared.
494 * Fixed syscall numbers for tee and sync_file_range.
495 (Addresses Debian bug #503124)
496 * Fixed several bugs in strings decoder, including potential heap
498 (Addresses Fedora bugs #470529, #478324 and #511035)
499 * Marked sendfile(2) as a network syscall.
500 (Addresses Debian bug #509499)
501 * Fixed accept(2) decoding.
502 (Addresses Debian bug #507573)
503 * Fixed sigtimedwait(2) decoding.
504 * Fixed build on ARM EABI.
505 (Addresses Debian bugs #520084 and #535564, and Fedora bug #507576)
506 * Fixed display of 32-bit fcntl(F_SETLK) on 64-bit architectures.
507 (Addresses Red Hat bug #471169)
508 * Fixed display of 32-bit argv array on 64-bit architectures.
509 (Addresses Fedora bug #519480)
510 * Fixed display of 32-bit struct sigaction on 64-bit architectures.
511 * Fixed HPPA architecture support.
512 (Addresses Debian bugs #437928 and #546619)
517 * Support new Linux/PPC system call subpage_prot and PROT_SAO flag.
518 * In sigaction system call, display sa_flags value along with SIG_DFL/SIG_IGN.
523 * -F is now deprecated, -f has traced vfork too on Linux for a long time now.
524 * Print O_CLOEXEC, MSG_CMSG_CLOEXEC flag bits.
525 * Improved output for prctl system call on Linux.
526 * Improved support for Linux/ARM.
527 * SA_NOMASK is now spelled SA_NODEFER, and SA_ONESHOT is spelled SA_RESETHAND.
532 * Improved output for delete_module, futex, and mbind system calls on Linux.
533 * Improved output for SG_IO ioctls on Linux.
534 * Support new Linux system calls move_pages, utimensat, signalfd, timerfd,
535 eventfd, getcpu, epoll_pwait.
540 * Several biarch improvements.
541 * Improved output for adjtimex, sysctl, quotactl, mount, umount.
542 * Support new Linux system calls *at, inotify*, pselect6, ppoll and unshare.
547 * Accept numeric system calls in -e.
552 * Introduce "-e trace=desc".
557 * Better x86-64 support for IA32 processes.
558 * Update PowerPC system calls.
559 * Better printing for Linux aio system calls.
563 * Quick fix release for build issues.
564 * One fix for Linux/ARM system call table.
569 * Print fault address for SIGSEGV/SIGBUS signals when available.
574 * Improve socket ioctl printing.
575 * Update Linux/IA64 syscall list.
576 * Fix Linux/x86-64 syscall argument extraction for 32-bit processes.
577 * Improve mount flags printing.
578 * Support symbolic printing of x86_64 arch_prctl parameters.
583 * Update syscall tables for Alpha, ARM, HPPA.
584 * Support new Linux syscalls mbind, set_mempolicy, get_mempolicy, waitid.
585 * Support Linux syscalls fadvise64, fadvise64_64, and epoll_*.
586 * Improve ioctl command name matching.
587 * Print RTC_* ioctl structure contents.
588 * Support newer RLIMIT_* values.
589 * Print struct cmsghdr details in sendmsg.
594 * Print attribute values in *xattr system calls on Linux.
595 * Include pread and pwrite calls in -e read and -e write tracing.
596 * Update SO_* and IP_* value lists and add IPV6_* values for socket options.
597 * Print clock_t values symbolically in Linux clock_* system calls.
601 * Bug fixes, Linux ioctl updates.
602 * David Miller contributed support for Linux/SPARC64.
610 * Update Linux ioctl lists.
611 * Update PF_* and AF_* value lists.
612 * The 4.5.3 -p behavior for NPTL threads applies only under -f, and got fixed.
617 * On Linux using NPTL threads, -p will now attach to all threads in a process.
618 * Handle new mq_* system calls in Linux 2.6.6 and later.
623 * Report some new VM_* bit values on Linux.
624 * Better output for Linux sched_* system calls.
629 * Display multiple ioctl name matches on Linux.
633 * New port to AMD's x86-64 architecture. One strace binary can
634 handle both new x86-64 and old i386 processes.
635 * Fixed support for LFS64 calls.
636 * New switch -E to add/remove environment variables for the command.
637 * Merged s390/s390x port.
638 * Trace an unbounded number of processes.
639 * Handle numerous new system calls in Linux 2.5, and new threads semantics.
640 * Fixed bugs with attach/detach leaving things stopped.
641 * Fixed traced process seeing ECHILD despite live, traced children
642 in waitpid calls with WNOHANG.
643 * Stuart Menefy contributed a port to Linux/SH.
644 * Stephen Thomas contributed a port to Linux/SH64.
645 * Many other bug fixes.
649 * Fix Linux/ia64 support, looks like someone renamed a few things on us
650 * Fix the ioctl setup for Linux, turned out it did not really work.
651 Improve the ioctl extracter as well so we decode some more ones.
655 * compile fixes for Linux/mips
659 * Linux ia64 and hppa ports added
660 * The usual Linux syscall updates (includes 32bit uid/gid support),
661 * Linux ioctl list updated
662 * Support IPv6 scope ids
663 * FreeBSD/i386 port added
664 * UnixWare and Solaris updates
665 * Better support for tracing multithreaded processes in Linux
669 * Compiles on glibc2.0 systems again
670 * Linux/S390 port added
671 * The usual Linux syscall updates
672 * we can follow fork on arm now
676 * Linux/MIPS port added
677 * Lots of Linux updates again
678 * Improved IPv6 support
684 * Compiles on glibc2.0 systems again
688 * Get stat structure properly on Linux 64bit archs
689 * Personalities work again
690 * Compile correctly on SunOS again
696 * Linux (ultra)sparc fixes
703 * add support for more Linux architectures (powerpc, sparc, arm)
704 * support lots more Linux syscalls
705 * fix signal handling
706 * add IPX and IPIP support
707 * check stray syscall after execv
708 * fix hanging children
710 Changes in version 3.1
711 ======================
714 * Linux 68k is supported
715 * Linux alpha is supported
716 * configure is upgraded to autoconf 2.x
717 * using -f in combination with -e now works correctly
718 * output can be piped to a program
719 * tracing setuid programs works better
720 * it is now reasonable to install strace setuid to root in some circumstances
721 * new useful tracing names like file and process to trace whole
722 classes of system calls, e.g. -efile traces all system calls that
723 take a file name as an argument
724 * IPC calls on SunOS 4.1.x are decoded
725 * Linux program memory is reliably dereferenced
726 * Linux decodes at least the name of all syscalls as of pre2.0.4
727 * various cosmetic changes and bug fixes
729 Changes from versions 2.x to version 3.0
730 ========================================
732 * filename arguments are neither abbreviated nor stringified
733 * string arguments are now true C strings using octal instead of hex by default
734 * preprocessor constants are never shortened (e.g. was RDONLY => now O_RDONLY)
735 * by default the output for multiple processes now goes into one file
736 * all structures, vectors, bitsets, etc. use consistent output formats
737 * the -c option now means count calls, -i does what the old -c used to do
739 New Features in version 3.0
740 ===========================
742 * non-ascii strings can be optionally printed entirely in hex
743 * the output format is readable when mutiple processes are generating output
744 * exit values are printed in an alignment column
745 * is is possible to suppress messages about attaching and detaching
746 * various tracing features can be enabled on a per syscall/signal/desc basis
747 * selective tracing of syscalls
748 * selective printing of syscall structures
749 * selective abbreviation of long structures on a per syscall basis
750 * selective printing of raw syscall arguments and results
751 * selective tracing of signals
752 * selective dumping of all I/O read from file descriptors
753 * selective dumping of all I/O written to file descriptors
754 * optional counting of time, calls, and errors for each syscall
projects / strace / blob