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