1 Noteworthy changes in release ?.?? (????-??-??)
4 * Time stamps are now printed according to ISO 8601.
7 * Implemented syscall fault injection.
8 * Implemented decoding of DM_* ioctl commands.
9 * Implemented decoding of attr parameter of perf_event_open syscall.
10 * Implemented decoding of pkey_alloc, pkey_free, and pkey_mprotect syscalls.
11 * Implemented dumping of mq_timedsend and mq_timedreceive syscalls.
12 * Updated lists of ioctl commands from Linux 4.9.
15 * Fixed corner cases in decoding of getgroups, getresuid, init_module,
16 inotify_init1, kcmp, kexec_load, lookup_dcookie, mq_getsetattr, mq_notify,
17 mq_open, mq_timedreceive, mq_timedsend, name_to_handle_at, process_vm_readv,
18 process_vm_writev, setfsuid, setgroups, setns, and unshare syscalls.
19 * Fixed handling of verbose flag in printing of controls array of
20 struct v4l2_ext_controls.
21 * Fixed omission of field names in the output of capability, sigaction,
22 statfs, timespec, timeval, and utimbuf structures.
24 Noteworthy changes in release 4.14 (2016-10-04)
25 ===============================================
28 * When using -p option without a command and no processes has been attached,
29 strace exits with exit status 1.
32 * Added printing of the mode argument of open and openat syscalls
33 when O_TMPFILE flag is set. (Addresses Fedora bug #1377846).
34 * Enhanced -e abbrev=set, -e raw=set, and -e verbose=set.
35 * Enhanced decoding of futex, keyctl, quotactl, timerfd_settime,
36 and aio family syscalls.
37 * Implemented fetching of the 7th subcall argument on mips o32.
38 * Updated lists of BPF_*, ETH_P_*, KEXEC_ARCH_*, SCTP_*, TCP_*, and *_MAGIC
40 * Updated lists of ioctl commands from Linux 4.8.
41 * Added decoding of new syscalls on sh and sh64.
42 * Added RISC-V architecture support.
45 * Marked io_setup and io_destroy as memory mapping related syscalls.
46 * Fixed leakage of placeholder descriptors to tracees.
47 * Fixed printing of mode_t, umode_t, and umask types.
48 * Fixed decoding of iovec arrays without a limit on total data size.
49 * Fixed decoding of fadvise64, fallocate, futex, keyctl, quotactl, readahead,
50 and ipc family syscalls.
51 * Fixed decoding of invalid syscalls mapped to indirect subcalls.
52 * Fixed decoding of struct btrfs_ioctl_vol_args_v2 on non-native
54 * Fixed decoding of PTRACE_DETACH on sparc and sparc64.
55 * Fixed decoding of struct stat64 on sparc64.
56 * Fixed decoding of uid and gid-related syscalls on sparc64.
57 * Fixed decoding of the forth argument of semctl syscall on sparc64.
58 * Fixed values of tty ioctl constants on sparc64.
59 * Fixed sparc personality support on sparc64.
61 Noteworthy changes in release 4.13 (2016-07-26)
62 ===============================================
65 * Implemented a general netlink socket parser.
66 * Enhanced decoding of socket addresses.
67 * Enhanced decoding of cmsghdr, msghdr, and mmsghdr structures.
68 * Enhanced decoding of accept, accept4, bind, getpeername, getsockname,
69 ipc, recvfrom, recvmsg, recvmmsg, sendto, sendmmsg, and socketcall syscalls.
70 * Updated lists of AF_*, BPF_MAP_TYPE_*, KEY_*, KEYCTL_*, RWF_*, SS_*,
71 and *_MAGIC constants.
72 * Updated lists of ioctl commands from Linux 4.7.
75 * Fixed decoding of pid_t argument of prlimit64 syscall.
76 * Fixed sign extension issues in the parser of struct rusage.
77 * Fixed race condition in decoding of timeout argument of recvmmsg and
78 rt_sigtimedwait syscalls.
79 * Fixed build with fresh linux kernel headers.
81 Noteworthy changes in release 4.12 (2016-05-31)
82 ===============================================
85 * Implemented simultaneous use of -p option and tracing of a command.
86 (addresses Debian bug #549942).
87 * Implemented caching of netlink conversations to reduce amount of time
88 spent in decoding socket details in -yy mode.
89 * Implemented -yy mode decoding of protocol:portid pairs associated with
90 netlink socket descriptors.
91 * Implemented decoding of copy_file_range, preadv2, and pwritev2 syscalls.
92 * Implemented dumping of preadv, preadv2, pwritev, pwritev2, and vmsplice
94 * Implemented decoding of BTRFS_* and UFFDIO_* ioctl commands.
95 * Enhanced decoding of BLK*, EVIOC*, RTC_*, and VIDIOC_* ioctl commands.
96 * Enhanced decoding of fstatfs, fstatfs64, get_mempolicy, getdents,
97 getdents64, getgroups, getpriority, kill, mbind, migrate_pages, mknod,
98 mknodat, personality, poll, ppoll, quotactl, rt_sigpending,
99 rt_sigqueueinfo, rt_sigtimedwait, rt_tgsigqueueinfo, sched_getaffinity,
100 sched_setaffinity, seccomp, set_mempolicy, setgroups, setpriority, statfs,
101 statfs64, tgkill, waitid, and xattr family syscalls.
102 * Enhanced decoding of getxpid, getxuid, and getxgid syscalls on alpha.
103 * Enhanced decoding of pipe syscall on alpha, ia64, mips, sh, and sparc.
104 * Added decoding of bind, listen, and setsockopt direct syscalls on sparc.
105 * Added decoding of osf_statfs64 and osf_fstatfs64 syscalls on alpha.
106 * Added decoding of fadvise64 and fadvise64_64 on s390.
107 * Updated lists of AF_*, BPF_MAP_TYPE_*, CLONE_*, EPOLL*, IPV6_*, MADV_*,
108 MSG_*, PTRACE_*, SEGV_*, SO_*, SOL_*, *_MAGIC, and quotactl constants.
109 * Updated lists of ioctl commands from Linux 4.6.
112 * Fixed build on arc, metag, nios2, or1k, and tile architectures.
113 * Fixed decoding of 32-bit times syscall return value on 64-bit architectures.
114 * Fixed decoding of mlock2 syscall on sparc.
115 * Fixed decoding of osf_shmat syscall on alpha.
116 * Fixed decoding of syscalls unknown to the kernel on s390/s390x.
117 (addresses Debian bug #485979 and Fedora bug #1298294).
118 * Fixed decoding of preadv syscall in case of short read.
119 * Fixed decoding and dumping of readv syscall in case of short read.
120 * Fixed dumping of recvmsg and recvmmsg syscalls in case of short read.
121 * Fixed decoding of mincore syscall's last argument.
122 * Fixed remaining errors in mapping between syscall numbers and numbers
123 of syscall arguments.
124 * Applied various fixes to strace-graph script.
126 Noteworthy changes in release 4.11 (2015-12-21)
127 ===============================================
129 * Changes in behavior
130 * Some syscalls have different names depending on architecture and
131 personality. In these cases, syscall filtering and printing now
132 consistently uses the names that match corresponding __NR_* kernel
133 macros of the tracee's architecture and personality.
134 * Added strace prefix to all diagnostic messages.
137 * Enhanced and extended test suite.
138 * Implemented reliable tracing of processes whose personality differs
139 from the personality of strace, fixed decoding of 32-bit personality
140 syscalls on 64-bit architectures.
141 * When some data referenced by syscall arguments is irrelevant or cannot
142 be read from tracee's memory, strace now prints its address consistently.
143 * When a syscall is restarted using restart_syscall mechanism, strace now
144 shows the syscall name on architectures that expose this information.
145 * Print values returned by epoll_create1, eventfd, eventfd2, fanotify_init,
146 inotify_init1, perf_event_open, pipe, pipe2, signalfd, signalfd4, socket,
147 socketpair, timerfd, and timerfd_create syscalls, as well as F_DUPFD and
148 F_DUPFD_CLOEXEC fcntl commands, as file descriptors.
149 * Optimized decoding of indirect socket syscalls.
150 * Implemented decoding of nanoseconds along with seconds in stat family
151 syscalls (addresses Fedora bug #1251176).
152 * Implemented decoding of struct statfs.f_flags in statfs syscall.
153 * Implemented decoding of siginfo_t.si_syscall and siginfo_t.si_arch
155 * Implemented decoding of indirect syscall on mips o32.
156 * Implemented decoding of IPPROTO_IP control messages.
157 * Implemented decoding of setsockopt syscall multicast arguments.
158 * Enhanced decoding of struct sigevent.
159 * Enhanced decoding of block, loop, mtd, ptp, rtc, SG_IO, socket, tty,
160 and v4l2 ioctl syscall arguments.
161 * Enhanced decoding of epoll_create, fcntl, fcntl64, futex, getdents,
162 getdents64, getsockopt, io_*, mount, msgctl, prctl, quotactl, recvfrom,
163 sendfile, setsockopt, and shmctl syscalls.
164 * Implemented decoding of bpf, execveat, ioperm, iopl, kcmp, kexec_file_load,
165 lookup_dcookie, membarrier, memfd_create, mlock2, name_to_handle_at,
166 open_by_handle_at, sched_getattr, sched_setattr, and userfaultfd syscalls.
167 * Updated lists of AF_*, EPOLL_*, FALLOC_FL_*, F_*, INPUT_PROP_*, IPPROTO_*,
168 IPV6_*, IP_*, KEY_*, LOCK_*, MNT_*, MS_*, PACKET_*, PERF_FLAG_*, PF_*,
169 PR_*, PTRACE_O_*, RENAME_*, SCTP_*, SECBIT_*, SO_*, TCP_*, and siginfo_t
171 * Added Nios II architecture support.
172 * Added new syscall entries to match Linux 4.4.
175 * Fixed potential short read of strings from tracee's memory.
176 * Fixed -qq option in conjunction with -o option.
177 * Fixed filtering of <unavailable> syscalls.
178 * Fixed decoding of ioctl syscall command on aarch64 and 32-bit architectures
179 with 64-bit aligned structures.
180 * Fixed decoding of eventfd2, epoll_create1, signalfd4, and sync_file_range2
181 syscall flags arguments.
182 * Fixed decoding of 4th argument of clock_nanosleep syscall.
183 * Fixed decoding of getpagesize syscall on m68k.
184 * Fixed decoding of getrandom and seccomp syscalls on aarch64.
185 * Fixed decoding of timezone argument of gettimeofday and settimeofday
187 * Fixed decoding of offset argument of mmap2 syscall on arm, sparc,
189 * Fixed decoding of pipe syscall on alpha and mips.
190 * Fixed decoding of pipe2 syscall on ia64, sh, sparc, and sparc64.
191 * Fixed decoding of signal mask argument of pselect6 syscall on x32.
192 * Fixed decoding of signal mask of rt_sigreturn syscall on aarch64, m68k,
194 * Fixed decoding of 4th argument of semctl indirect syscall.
195 * Fixed decoding of sa_restorer and sa_mask of sigaction syscall on m68k.
196 * Fixed decoding of statfs64 and fstatfs64 syscalls on arm eabi.
197 * Fixed decoding of struct dirent on x32.
198 * Fixed decoding of times syscall return value on mips n32 and x32.
199 * Fixed decoding of path argument of umount2 syscall
200 (addresses Debian bug #785050).
201 * Worked around a kernel bug in tracing privileged executables.
202 * Fixed various errors in mapping between syscall numbers and associated
203 information like the number of syscall arguments, the name of syscall,
206 Noteworthy changes in release 4.10 (2015-03-06)
207 ===============================================
210 * Added -yy option to print protocol and address information associated with
212 * Extended "-e read=set" and "-e write=set" options to cover sendmsg,
213 recvmsg, sendmmsg, and recvmmsg syscalls.
214 * Implemented full 32-bit decoding of ioctl commands
215 (addresses Debian bug #692913 and Fedora bug #902788).
216 * Implemented PTRACE_GETREGS API support on ia64.
217 * Implemented PTRACE_GETREGS API support on mips.
218 * Implemented PTRACE_GETREGSET API support on s390/s390x.
219 * Implemented decoding of getrandom and seccomp syscalls.
220 * Implemented full decoding of 64-bit capability sets.
221 * Implemented decoding of all prctl commands.
222 * Implemented decoding of parametrized ioctl commands.
223 * Implemented decoding of evdev ioctl commands.
224 * Implemented decoding of v4l ioctl commands.
225 * Implemented decoding of SG_IO v4 ioctl commands.
226 * Implemented decoding of FIFREEZE/FITHAW/FITRIM ioctl commands.
227 * Implemented decoding of FALLOC_FL_* fallocate flags.
228 * Implemented decoding of rt_sigreturn signal mask on aarch64,
230 * Enhanced socket decoder to support bluetooth sockets.
231 * Enhanced decoding of unlisted ioctl commands.
232 * Enhanced decoding of getsockopt and setsockopt syscall.
233 * Enhanced decoding of sysinfo syscall.
234 * Enhanced decoding of struct cmsghdr.
235 * Enhanced decoding of wait status.
236 * Enhanced aio support on non-x86 architectures by using external libaio.h.
237 * Added O_TMPFILE to the list of recognized open mode flags.
238 * Updated the list of filesystem type constants that is used in decoding
239 statfs family syscalls.
240 * Updated lists of CAP_*, PR_*, PTRACE_*, SCHED_*, SO_*, SOL_*, SWAP_FLAG_*,
242 * Updated lists of signal constants from Linux 3.19.
243 * Updated lists of errno constants from Linux 3.19.
244 * Updated lists of ioctl commands from Linux 3.9.
245 * Added new syscall entries to match Linux 3.19.
248 * Fixed various errors in mapping between syscall numbers and associated
249 information like the number of syscall arguments, the name of syscall,
251 * Fixed quoting issues in printing descriptors, filenames, network interface
252 names, struct utsname members, device/volume names of BLK* ioctl commands.
253 * Fixed uid_t/git_t decoding.
254 * Fixed potential out-of-bounds read issues in getdents/getdents64 decoders.
255 * Fixed potential open flags truncation on some architectures.
256 * Fixed decoding of struct ifreq.ifr_name.
257 * Fixed decoding of SIOCSIFNAME ioctl command.
258 * Fixed decoding of RENAME_* renameat2 flags.
259 * Fixed decoding of UTIME_NOW/UTIME_OMIT timeval structures.
260 * Fixed decoding of indirect ipc subcalls on some architectures.
261 * Fixed decoding of fanotify_mark syscall on 32-bit architectures.
262 * Fixed decoding of 32-bit stat structures on 64-bit architectures.
263 * Fixed decoding of 32-bit struct cmsghdr on 64-bit architectures.
264 * Fixed decoding of 32-bit preadv/pwritev offset on 64-bit architectures.
265 * Fixed decoding of sigreturn/rt_sigreturn signal mask on ia64, ppc, ppc64,
266 sparc, sparc64, mips, and s390.
267 * Fixed instruction pointer output (-i option) on architectures that support
268 several personalities.
269 * Fixed behaviour of "-e read=set" and "-e write=set" when read and write
271 * Fixed build on systems where struct sigaction has no sa_restorer member.
272 * Fixed build with uclibc and musl libc.
275 * Linux kernel >= 2.5.46 is required.
276 Older versions without a decent PTRACE_SETOPTIONS support will not work.
277 * On mips, linux kernel >= 2.6.15 is required.
278 Older versions without a decent PTRACE_GETREGS support will not work.
279 * On s390 and s390x, linux kernel >= 2.6.27 is required.
280 Older versions without a decent PTRACE_GETREGSET support will not work.
282 Noteworthy changes in release 4.9 (2014-08-15)
283 ==============================================
285 * Changes in behavior
286 * Disabled OABI support on ARM EABI systems by default,
287 added --enable-arm-oabi option to enable it at configure time.
290 * Added experimental -k option to print stack trace after each traced syscall.
291 * Added -w option to produce stats on syscall latency.
292 (addresses Debian bug #457497).
293 * Added ARC architecture support.
294 * Added PTRACE_GETREGS API support on PowerPC.
295 * Enhanced Bionic libc and musl libc support.
296 * Enhanced tracing of x86 personality processes on x86_64 and x32.
297 * Enhanced tracing of ARM personality processes on AArch64.
298 * Enhanced 32/64bit personality detection on PowerPC.
299 * Implemented decoding of add_key, ioprio_get, ioprio_set, kexec_load, keyctl,
300 renameat2, and request_key syscalls.
301 * Robustified decoding of select, pselect, and io_submit syscalls.
302 * Enhanced decoding of delete_module, fanotify_init, fanotify_mark, fcntl,
303 setdomainname, sethostname, setns, and sync_file_range syscalls.
304 * Enhanced decoding of signal bitmasks.
305 * Enhanced decoding of file descriptors.
306 * Enhanced siginfo_t decoding.
307 * Enhanced PF_NETLINK decoding.
308 * Updated CLOCK_* constants
309 (addresses Fedora bug #1088455).
310 * Added new syscall entries to match Linux 3.16.
313 * Added shmat and shmdt to the set of memory mapping related syscalls.
314 * Fixed detaching from stopped processes.
315 * Fixed fanotify_mark decoding on 32bit architectures.
316 * Fixed offset decoding in preadv and pwritev syscalls.
317 * Fixed select decoding for glibc in _FORTIFY_SOURCE mode.
318 * Fixed decoding of epoll_ctl syscall with EPOLL_CTL_DEL argument.
319 * Fixed build when <sys/ptrace.h> and <linux/ptrace.h> conflict
320 (addresses Fedora bug #993384).
321 * Miscellaneous corrections in the manual page.
322 (Addresses Debian bug #725987).
324 Noteworthy changes in release 4.8 (2013-06-03)
325 ==============================================
327 * Changes in behavior
328 * In case of normal strace termination, when the trace output is
329 redirected to a pipe, strace now closes it and waits for the pipe
330 process termination before exit.
333 * Implemented tracing using PTRACE_SEIZE API (when available).
334 * Implemented more reliable PTRACE_GETREGSET-based process personality
335 detection on x86-64 and x32 (when available).
336 * Added -e trace=memory option for tracing memory mapping related syscalls.
337 * Documented -b option.
338 * Allowed exit status messages to be suppressed by giving -q option twice.
339 * Added AArch64 architecture support
340 (addresses Debian bug #693074 and Fedora bug #969858).
341 * Added support for OpenRISC 1000, Meta, and Xtensa architectures.
342 * Added tilegx personality support for Tile.
343 * Enhanced support of NOMMU architectures.
344 * Enhanced decoding of getdents, mmap, perf_event_open, ptrace, and
346 * Added new syscall entries to match Linux 3.9.
347 * Regenerated the list of common ioctl names from Linux 3.9.
348 * Updated the list of errno constants.
349 * Updated lists of AF_*, MADV_*, MAP_*, MSG_*, MS_*, PF_*, PR_*,
350 PTRACE_O_*, and TCP_* constants.
351 * Implemented decoding of UBI ioctls.
352 * Removed redundant "*32" ioctl names.
355 * Fixed ERESTARTNOINTR leaking to userspace on ancient kernels
356 (addresses Fedora bug #659382).
357 * Fixed kernel release string parsing
358 (addresses Debian bug #702309).
359 * Fixed decoding of *xattr syscalls
360 (addresses Fedora bug #885233).
361 * Fixed handling of files with 64-bit inode numbers by 32-bit strace
362 (addresses Fedora bug #912790).
363 * Fixed tracing forks on SPARC.
364 * Fixed decoding of fadvise64, fallocate, ftruncate64, io_submit, pread,
365 preadv, pwrite, pwritev, readahead, sigaltstack, sync_file_range, sysctl,
366 and truncate64 syscalls.
367 * Fixed categories of multiple syscalls on most of supported architectures.
368 * Fixed decoding of non-native 32-bit personality recv[m]msg syscalls.
369 * Fixed decoding of multiple 32-bit personality syscalls on x32.
370 * Fixed decoding of long long syscall arguments on ARM, MIPS/o32, PowerPC,
371 S390x, and Tile architectures.
372 * Fixed semtimedop decoding on S390x.
373 * Fixed sram_alloc decoding on Blackfin.
374 * Fixed build when process_vm_readv is a stab.
375 * Fixed build with older versions of libaio.h.
377 Noteworthy changes in release 4.7 (2012-05-02)
378 ==============================================
380 * Changes in behavior
381 * strace no longer suspends waitpid until there is a child
382 for waitpid'ing process to collect status from.
383 * strace no longer detaches from a tracee which is supposed
385 * strace now issues a new message: "+++ exited with EXITCODE +++"
386 which shows exact moment strace got exit notification,
387 analogous to existing "+++ killed by SIG +++" message.
390 * Added x32 personality support (x86_64 architecture).
391 * Added -y and -P options to print file descriptor paths and
392 filter by those paths.
393 * Added -I option to control strace interactivity.
394 * Allowed -p option to take comma or whitespace-separated list of PIDs.
395 * Added strace_log_merge script helper to merge timestamped "strace -ff"
397 * Implemented decoding of clock_adjtime, get_robust_list, migrate_pages,
398 preadv, prlimit64, process_vm_readv, process_vm_writev, pwritev,
399 recvmmsg, recvmsg, rt_tgsigqueueinfo, sendmmsg, setns, set_robust_list,
400 sched_rr_get_interval, splice, syslog, tee and vmsplice syscalls.
401 * Enhanced decoding of capget, capset, getrlimit, flistxattr, io_submit,
402 listxattr, setrlimit and swapon syscalls.
403 * Implemented decoding of loop and mtd ioctls.
404 * Added syscall entries for new linux syscalls.
405 * Added syscall entries for direct socket system calls on powerpc.
406 * Updated the list of errno constants.
407 * Updated lists of MSG_*, STA_*, and TCP_* constants.
408 * Regenerated the list of ioctl names from Linux 3.3.
409 * Enhanced switching between processes with different personalities.
410 * Enhanced signals reporting by using short signal names.
411 * Made ERESTART* messages more descriptive.
412 * Made parsing of numbers from strings more robust.
413 * Added support for compat_statfs64 and statfs64.f_flags.
414 * Changed read of data blocks to use single process_vm_readv syscall
415 (when available) instead of several PTRACE_PEEKDATA operations.
416 * Changed read of registers on x86 and x86-64 to use single PTRACE_GETREGS
417 operation instead of several PTRACE_PEEKUSER operations.
418 * Applied various optimizations to make strace work faster.
421 * Implemented proper handling of real SIGTRAPs on kernels supporting
422 PTRACE_O_TRACESYSGOOD.
423 (Addresses Fedora bug #162774).
424 * Fixed sockaddr_un.sun_path name in decoded output.
425 (Addresses Debian bug #554946).
426 * Fixed to avoid potential core file clobbering on exit.
427 (Addresses Debian bug #656398).
428 * Fixed a typo in documentation.
429 (Addresses Debian bug #653309).
430 * Fixed decoding of timer id returned by timer_create.
431 * Fixed epoll_create1, epoll_wait and epoll_pwait decoding.
432 * Fixed *at syscalls flags decoding.
433 * Fixed ARM EABI 64-bit syscall's arguments decoding.
434 * Fixed semtimedop decoding on s390.
435 * Fixed osf_sigprocmask decoding on alpha.
436 * Fixed ipc and socket subcall decoding on several architectures.
437 * Corrected syscall entries for epoll_pwait, epoll_create, epoll_ctl,
438 epoll_wait, mincore, mlockall, prctl, reboot, sendfile, sendfile64,
439 sendmsg, sgetmask, ssetmask, swapon, tgkill and tkill syscalls.
440 * Corrected io_* syscall entries on ARM.
441 * Fixed PID prefix printing in "strace -oLOG -ff -p1 -p2 -p3" case.
442 * Fixed logging of unfinished lines in "strace -oLOG -ff" case.
443 * Fixed build when libaio-devel is not available.
444 * Fixed configure checks for PTRACE_* constants.
445 * Fixed compilation warnings remained on several architectures.
448 * Removed all non-Linux code. After years of neglect, that dead code
449 just hampered further strace development.
450 * Linux kernel >= 2.6.18 is recommended. Older versions might still
451 work but they haven't been thoroughly tested with this release.
453 Noteworthy changes in release 4.6 (2011-03-15)
454 ==============================================
456 * Changes in behavior
457 * Print diagnostic information about changes in personality mode to
458 standard error instead of standard output.
461 * Implemented a new method of following clone, fork, and vfork
462 syscalls using the Linux kernel's explicit facilities for tracing
463 creation of threads and child processes.
464 * Implemented CLONE_PARENT and CLONE_UNTRACED flags handling.
465 * Implemented decoding of TLS syscalls on m68k.
466 * Implemented biarch support on powerpc64.
467 * Implemented biarch support for getrlimit() and setrlimit().
468 * Implemented decoding of struct ucred in getsockopt SO_PEERCRED.
469 * Implemented SOL_SCTP socket options decoding.
470 * Added HDIO_* ioctl names.
471 (Addresses Debian bug #450953).
472 * Added LOOP_* ioctl names.
473 * Updated lists of CLOCK_*, CLONE_*, MS_*, and SOL_* constants
474 to match Linux 2.6.37.
475 * Updated the list of IPPROTO_* constants to match netinet/in.h.
476 * Implemented decoding of HDIO_* and BLK* ioctls.
477 * Added MicroBlaze architecture support.
478 * Added new syscall entries to match Linux 2.6.37.
479 * Regenerated list of ioctl names from Linux 2.6.37.
480 * Enhanced signal notification decoding.
481 * Documented -C and -D options.
484 * Fixed fetching syscall arguments on m68k.
485 * Fixed an error when judging whether a process has children.
486 * Fixed get/set_robust_list syscall numbers for powerpc.
487 * Fixed a corner case in printing clone flags.
488 * Fixed cross-compiling issues.
489 * Fixed build issues on powerpc64, SH and SPARC.
490 * Fixed syscall flags of fstatat*, mmap, mmap2, fadvise64*, swapoff,
491 fgetxattr, flistxattr, fremovexattr, epoll_create, fallocate,
492 fanotify_init, and fanotify_mark syscalls.
493 * Fixed decoding of get[ug]id, gete[ug]id and setfs[ug]id return values.
494 * Fixed biarch support in IO dumping.
495 * Fixed raw exit_group decoding.
496 * Fixed decoding of file descriptors on 64-bit architectures.
497 * Fixed a corner case in waitpid handling.
498 (Addresses Red Hat bug #663547).
499 * Fixed stat64 decoding on mips
500 (Addresses Debian bug #599028).
501 * Fixed misleading italics in the manual page.
502 (Addresses Debian bug #589323).
504 Noteworthy changes in release 4.5.20 (2010-04-13)
505 =================================================
508 * Implemented decoding of new linux syscalls: inotify_init1, recvmmsg.
509 * Implemented basic decoding of new linux syscalls: preadv, pwritev,
510 rt_tgsigqueueinfo, perf_event_open.
511 * Enhanced decoding of recently added syscalls on non-x86 architectures
512 by replacing a bare decoder with elaborate parsers enabled earlier
514 * Implemented -C option to combine regular and -c output.
515 (Addresses Debian bug #466196)
516 * Enhanced decoding of mbind and mremap syscalls.
517 * Enhanced SOL_PACKET socket options decoding.
518 * Regenerated list of ioctl names from linux 2.6.33.
519 * Added TILE architecture support.
522 * Fixed build with Linux kernel headers 2.6.32-rc5+.
523 (Addresses Debian bug #560516 and Fedora bug #539044)
524 * Fixed build on mips.
525 * Fixed handling of Linux systems without struct statfs64.
526 * Fixed reporting signal mask by sigreturn on powerpc.
527 * Fixed potential stack buffer overflow in select decoder.
528 (Addresses Fedora bug #556678)
529 * Corrected msgsnd indirect ipccall decoding.
530 * Corrected decoding of 64bit syscalls.
531 (Addresses Debian bug #570603)
532 * Corrected getsockopt decoding on architectures where
533 sizeof(long) > sizeof(int).
534 (Addresses Debian bug #494844)
535 * Corrected decoding of epoll_pwait.
536 (Addresses Debian bug #513014)
537 * Corrected handling of killed threads.
539 Noteworthy changes in release 4.5.19 (2009-10-21)
540 =================================================
542 * Changes in behavior
543 * When command exits, strace now exits with the same exit status.
544 If command is terminated by a signal, strace terminates itself
545 with the same signal, so that strace can be used as a wrapper
546 process transparent to the invoking parent process.
547 When using -p option, the exit status of strace is zero unless
548 there was an unexpected error in doing the tracing.
549 (Addresses Fedora bug #105371 and Debian bug #37665)
552 * Implemented decoding of new Linux syscalls: accept4, dup3,
553 epoll_create1, eventfd2, inotify_init1, pipe2, signalfd4.
554 * Implemented decoding of socket type flags introduced in Linux 2.6.27.
555 * Implemented decoding of accept4 socketcall.
556 * Enhanced prctl decoding.
557 * Enhanced nanosleep decoding.
558 * Enhanced ptrace decoding.
559 * Enhanced futex decoding.
560 * Enhanced CAP_* decoding.
561 * Enhanced SIOCS* ioctls decoding.
562 * Enhanced fcntl F_* flags decoding.
563 * Enhanced semop/semtimedop decoding.
564 * Updated ARM architecture support.
565 * Added Blackfin architecture support.
566 * Added AVR32 architecture support.
567 * Added CRIS architecture support.
568 * Made strace detect when traced process suddenly disappeared.
571 * Fixed syscall numbers for tee and sync_file_range.
572 (Addresses Debian bug #503124)
573 * Fixed several bugs in strings decoder, including potential heap
575 (Addresses Fedora bugs #470529, #478324 and #511035)
576 * Marked sendfile(2) as a network syscall.
577 (Addresses Debian bug #509499)
578 * Fixed accept(2) decoding.
579 (Addresses Debian bug #507573)
580 * Fixed sigtimedwait(2) decoding.
581 * Fixed build on ARM EABI.
582 (Addresses Debian bugs #520084 and #535564, and Fedora bug #507576)
583 * Fixed display of 32-bit fcntl(F_SETLK) on 64-bit architectures.
584 (Addresses Red Hat bug #471169)
585 * Fixed display of 32-bit argv array on 64-bit architectures.
586 (Addresses Fedora bug #519480)
587 * Fixed display of 32-bit struct sigaction on 64-bit architectures.
588 * Fixed HPPA architecture support.
589 (Addresses Debian bugs #437928 and #546619)
594 * Support new Linux/PPC system call subpage_prot and PROT_SAO flag.
595 * In sigaction system call, display sa_flags value along with SIG_DFL/SIG_IGN.
600 * -F is now deprecated, -f has traced vfork too on Linux for a long time now.
601 * Print O_CLOEXEC, MSG_CMSG_CLOEXEC flag bits.
602 * Improved output for prctl system call on Linux.
603 * Improved support for Linux/ARM.
604 * SA_NOMASK is now spelled SA_NODEFER, and SA_ONESHOT is spelled SA_RESETHAND.
609 * Improved output for delete_module, futex, and mbind system calls on Linux.
610 * Improved output for SG_IO ioctls on Linux.
611 * Support new Linux system calls move_pages, utimensat, signalfd, timerfd,
612 eventfd, getcpu, epoll_pwait.
617 * Several biarch improvements.
618 * Improved output for adjtimex, sysctl, quotactl, mount, umount.
619 * Support new Linux system calls *at, inotify*, pselect6, ppoll and unshare.
624 * Accept numeric system calls in -e.
629 * Introduce "-e trace=desc".
634 * Better x86-64 support for IA32 processes.
635 * Update PowerPC system calls.
636 * Better printing for Linux aio system calls.
640 * Quick fix release for build issues.
641 * One fix for Linux/ARM system call table.
646 * Print fault address for SIGSEGV/SIGBUS signals when available.
651 * Improve socket ioctl printing.
652 * Update Linux/IA64 syscall list.
653 * Fix Linux/x86-64 syscall argument extraction for 32-bit processes.
654 * Improve mount flags printing.
655 * Support symbolic printing of x86_64 arch_prctl parameters.
660 * Update syscall tables for Alpha, ARM, HPPA.
661 * Support new Linux syscalls mbind, set_mempolicy, get_mempolicy, waitid.
662 * Support Linux syscalls fadvise64, fadvise64_64, and epoll_*.
663 * Improve ioctl command name matching.
664 * Print RTC_* ioctl structure contents.
665 * Support newer RLIMIT_* values.
666 * Print struct cmsghdr details in sendmsg.
671 * Print attribute values in *xattr system calls on Linux.
672 * Include pread and pwrite calls in -e read and -e write tracing.
673 * Update SO_* and IP_* value lists and add IPV6_* values for socket options.
674 * Print clock_t values symbolically in Linux clock_* system calls.
678 * Bug fixes, Linux ioctl updates.
679 * David Miller contributed support for Linux/SPARC64.
687 * Update Linux ioctl lists.
688 * Update PF_* and AF_* value lists.
689 * The 4.5.3 -p behavior for NPTL threads applies only under -f, and got fixed.
694 * On Linux using NPTL threads, -p will now attach to all threads in a process.
695 * Handle new mq_* system calls in Linux 2.6.6 and later.
700 * Report some new VM_* bit values on Linux.
701 * Better output for Linux sched_* system calls.
706 * Display multiple ioctl name matches on Linux.
710 * New port to AMD's x86-64 architecture. One strace binary can
711 handle both new x86-64 and old i386 processes.
712 * Fixed support for LFS64 calls.
713 * New switch -E to add/remove environment variables for the command.
714 * Merged s390/s390x port.
715 * Trace an unbounded number of processes.
716 * Handle numerous new system calls in Linux 2.5, and new threads semantics.
717 * Fixed bugs with attach/detach leaving things stopped.
718 * Fixed traced process seeing ECHILD despite live, traced children
719 in waitpid calls with WNOHANG.
720 * Stuart Menefy contributed a port to Linux/SH.
721 * Stephen Thomas contributed a port to Linux/SH64.
722 * Many other bug fixes.
726 * Fix Linux/ia64 support, looks like someone renamed a few things on us
727 * Fix the ioctl setup for Linux, turned out it did not really work.
728 Improve the ioctl extracter as well so we decode some more ones.
732 * compile fixes for Linux/mips
736 * Linux ia64 and hppa ports added
737 * The usual Linux syscall updates (includes 32bit uid/gid support),
738 * Linux ioctl list updated
739 * Support IPv6 scope ids
740 * FreeBSD/i386 port added
741 * UnixWare and Solaris updates
742 * Better support for tracing multithreaded processes in Linux
746 * Compiles on glibc2.0 systems again
747 * Linux/S390 port added
748 * The usual Linux syscall updates
749 * we can follow fork on arm now
753 * Linux/MIPS port added
754 * Lots of Linux updates again
755 * Improved IPv6 support
761 * Compiles on glibc2.0 systems again
765 * Get stat structure properly on Linux 64bit archs
766 * Personalities work again
767 * Compile correctly on SunOS again
773 * Linux (ultra)sparc fixes
780 * add support for more Linux architectures (powerpc, sparc, arm)
781 * support lots more Linux syscalls
782 * fix signal handling
783 * add IPX and IPIP support
784 * check stray syscall after execv
785 * fix hanging children
787 Changes in version 3.1
788 ======================
791 * Linux 68k is supported
792 * Linux alpha is supported
793 * configure is upgraded to autoconf 2.x
794 * using -f in combination with -e now works correctly
795 * output can be piped to a program
796 * tracing setuid programs works better
797 * it is now reasonable to install strace setuid to root in some circumstances
798 * new useful tracing names like file and process to trace whole
799 classes of system calls, e.g. -efile traces all system calls that
800 take a file name as an argument
801 * IPC calls on SunOS 4.1.x are decoded
802 * Linux program memory is reliably dereferenced
803 * Linux decodes at least the name of all syscalls as of pre2.0.4
804 * various cosmetic changes and bug fixes
806 Changes from versions 2.x to version 3.0
807 ========================================
809 * filename arguments are neither abbreviated nor stringified
810 * string arguments are now true C strings using octal instead of hex by default
811 * preprocessor constants are never shortened (e.g. was RDONLY => now O_RDONLY)
812 * by default the output for multiple processes now goes into one file
813 * all structures, vectors, bitsets, etc. use consistent output formats
814 * the -c option now means count calls, -i does what the old -c used to do
816 New Features in version 3.0
817 ===========================
819 * non-ascii strings can be optionally printed entirely in hex
820 * the output format is readable when mutiple processes are generating output
821 * exit values are printed in an alignment column
822 * is is possible to suppress messages about attaching and detaching
823 * various tracing features can be enabled on a per syscall/signal/desc basis
824 * selective tracing of syscalls
825 * selective printing of syscall structures
826 * selective abbreviation of long structures on a per syscall basis
827 * selective printing of raw syscall arguments and results
828 * selective tracing of signals
829 * selective dumping of all I/O read from file descriptors
830 * selective dumping of all I/O written to file descriptors
831 * optional counting of time, calls, and errors for each syscall
projects / strace / blob