1 Noteworthy changes in release ?.?? (????-??-??)
2 ===============================================
5 * Fixed build on arc, metag, nios2, or1k, and tile architectures.
7 Noteworthy changes in release 4.11 (2015-12-21)
8 ===============================================
11 * Some syscalls have different names depending on architecture and
12 personality. In these cases, syscall filtering and printing now
13 consistently uses the names that match corresponding __NR_* kernel
14 macros of the tracee's architecture and personality.
15 * Added strace prefix to all diagnostic messages.
18 * Enhanced and extended test suite.
19 * Implemented reliable tracing of processes whose personality differs
20 from the personality of strace, fixed decoding of 32-bit personality
21 syscalls on 64-bit architectures.
22 * When some data referenced by syscall arguments is irrelevant or cannot
23 be read from tracee's memory, strace now prints its address consistently.
24 * When a syscall is restarted using restart_syscall mechanism, strace now
25 shows the syscall name on architectures that expose this information.
26 * Print values returned by epoll_create1, eventfd, eventfd2, fanotify_init,
27 inotify_init1, perf_event_open, pipe, pipe2, signalfd, signalfd4, socket,
28 socketpair, timerfd, and timerfd_create syscalls, as well as F_DUPFD and
29 F_DUPFD_CLOEXEC fcntl commands, as file descriptors.
30 * Optimized decoding of indirect socket syscalls.
31 * Implemented decoding of nanoseconds along with seconds in stat family
32 syscalls (addresses Fedora bug #1251176).
33 * Implemented decoding of struct statfs.f_flags in statfs syscall.
34 * Implemented decoding of siginfo_t.si_syscall and siginfo_t.si_arch
36 * Implemented decoding of indirect syscall on mips o32.
37 * Implemented decoding of IPPROTO_IP control messages.
38 * Implemented decoding of setsockopt syscall multicast arguments.
39 * Enhanced decoding of struct sigevent.
40 * Enhanced decoding of block, loop, mtd, ptp, rtc, SG_IO, socket, tty,
41 and v4l2 ioctl syscall arguments.
42 * Enhanced decoding of epoll_create, fcntl, fcntl64, futex, getdents,
43 getdents64, getsockopt, io_*, mount, msgctl, prctl, quotactl, recvfrom,
44 sendfile, setsockopt, and shmctl syscalls.
45 * Implemented decoding of bpf, execveat, ioperm, iopl, kcmp, kexec_file_load,
46 lookup_dcookie, membarrier, memfd_create, mlock2, name_to_handle_at,
47 open_by_handle_at, sched_getattr, sched_setattr, and userfaultfd syscalls.
48 * Updated lists of AF_*, EPOLL_*, FALLOC_FL_*, F_*, INPUT_PROP_*, IPPROTO_*,
49 IPV6_*, IP_*, KEY_*, LOCK_*, MNT_*, MS_*, PACKET_*, PERF_FLAG_*, PF_*,
50 PR_*, PTRACE_O_*, RENAME_*, SCTP_*, SECBIT_*, SO_*, TCP_*, and siginfo_t
52 * Added Nios II architecture support.
53 * Added new syscall entries to match Linux 4.4.
56 * Fixed potential short read of strings from tracee's memory.
57 * Fixed -qq option in conjunction with -o option.
58 * Fixed filtering of <unavailable> syscalls.
59 * Fixed decoding of ioctl syscall command on aarch64 and 32-bit architectures
60 with 64-bit aligned structures.
61 * Fixed decoding of eventfd2, epoll_create1, signalfd4, and sync_file_range2
62 syscall flags arguments.
63 * Fixed decoding of 4th argument of clock_nanosleep syscall.
64 * Fixed decoding of getpagesize syscall on m68k.
65 * Fixed decoding of getrandom and seccomp syscalls on aarch64.
66 * Fixed decoding of timezone argument of gettimeofday and settimeofday
68 * Fixed decoding of offset argument of mmap2 syscall on arm, sparc,
70 * Fixed decoding of pipe syscall on alpha and mips.
71 * Fixed decoding of pipe2 syscall on ia64, sh, sparc, and sparc64.
72 * Fixed decoding of signal mask argument of pselect6 syscall on x32.
73 * Fixed decoding of signal mask of rt_sigreturn syscall on aarch64, m68k,
75 * Fixed decoding of 4th argument of semctl indirect syscall.
76 * Fixed decoding of sa_restorer and sa_mask of sigaction syscall on m68k.
77 * Fixed decoding of statfs64 and fstatfs64 syscalls on arm eabi.
78 * Fixed decoding of struct dirent on x32.
79 * Fixed decoding of times syscall return value on mips n32 and x32.
80 * Fixed decoding of path argument of umount2 syscall
81 (addresses Debian bug #785050).
82 * Worked around a kernel bug in tracing privileged executables.
83 * Fixed various errors in mapping between syscall numbers and associated
84 information like the number of syscall arguments, the name of syscall,
87 Noteworthy changes in release 4.10 (2015-03-06)
88 ===============================================
91 * Added -yy option to print protocol and address information associated with
93 * Extended "-e read=set" and "-e write=set" options to cover sendmsg,
94 recvmsg, sendmmsg, and recvmmsg syscalls.
95 * Implemented full 32-bit decoding of ioctl commands
96 (addresses Debian bug #692913 and Fedora bug #902788).
97 * Implemented PTRACE_GETREGS API support on ia64.
98 * Implemented PTRACE_GETREGS API support on mips.
99 * Implemented PTRACE_GETREGSET API support on s390/s390x.
100 * Implemented decoding of getrandom and seccomp syscalls.
101 * Implemented full decoding of 64-bit capability sets.
102 * Implemented decoding of all prctl commands.
103 * Implemented decoding of parametrized ioctl commands.
104 * Implemented decoding of evdev ioctl commands.
105 * Implemented decoding of v4l ioctl commands.
106 * Implemented decoding of SG_IO v4 ioctl commands.
107 * Implemented decoding of FIFREEZE/FITHAW/FITRIM ioctl commands.
108 * Implemented decoding of FALLOC_FL_* fallocate flags.
109 * Implemented decoding of rt_sigreturn signal mask on aarch64,
111 * Enhanced socket decoder to support bluetooth sockets.
112 * Enhanced decoding of unlisted ioctl commands.
113 * Enhanced decoding of getsockopt and setsockopt syscall.
114 * Enhanced decoding of sysinfo syscall.
115 * Enhanced decoding of struct cmsghdr.
116 * Enhanced decoding of wait status.
117 * Enhanced aio support on non-x86 architectures by using external libaio.h.
118 * Added O_TMPFILE to the list of recognized open mode flags.
119 * Updated the list of filesystem type constants that is used in decoding
120 statfs family syscalls.
121 * Updated lists of CAP_*, PR_*, PTRACE_*, SCHED_*, SO_*, SOL_*, SWAP_FLAG_*,
123 * Updated lists of signal constants from Linux 3.19.
124 * Updated lists of errno constants from Linux 3.19.
125 * Updated lists of ioctl commands from Linux 3.9.
126 * Added new syscall entries to match Linux 3.19.
129 * Fixed various errors in mapping between syscall numbers and associated
130 information like the number of syscall arguments, the name of syscall,
132 * Fixed quoting issues in printing descriptors, filenames, network interface
133 names, struct utsname members, device/volume names of BLK* ioctl commands.
134 * Fixed uid_t/git_t decoding.
135 * Fixed potential out-of-bounds read issues in getdents/getdents64 decoders.
136 * Fixed potential open flags truncation on some architectures.
137 * Fixed decoding of struct ifreq.ifr_name.
138 * Fixed decoding of SIOCSIFNAME ioctl command.
139 * Fixed decoding of RENAME_* renameat2 flags.
140 * Fixed decoding of UTIME_NOW/UTIME_OMIT timeval structures.
141 * Fixed decoding of indirect ipc subcalls on some architectures.
142 * Fixed decoding of fanotify_mark syscall on 32-bit architectures.
143 * Fixed decoding of 32-bit stat structures on 64-bit architectures.
144 * Fixed decoding of 32-bit struct cmsghdr on 64-bit architectures.
145 * Fixed decoding of 32-bit preadv/pwritev offset on 64-bit architectures.
146 * Fixed decoding of sigreturn/rt_sigreturn signal mask on ia64, ppc, ppc64,
147 sparc, sparc64, mips, and s390.
148 * Fixed instruction pointer output (-i option) on architectures that support
149 several personalities.
150 * Fixed behaviour of "-e read=set" and "-e write=set" when read and write
152 * Fixed build on systems where struct sigaction has no sa_restorer member.
153 * Fixed build with uclibc and musl libc.
156 * Linux kernel >= 2.5.46 is required.
157 Older versions without a decent PTRACE_SETOPTIONS support will not work.
158 * On mips, linux kernel >= 2.6.15 is required.
159 Older versions without a decent PTRACE_GETREGS support will not work.
160 * On s390 and s390x, linux kernel >= 2.6.27 is required.
161 Older versions without a decent PTRACE_GETREGSET support will not work.
163 Noteworthy changes in release 4.9 (2014-08-15)
164 ==============================================
166 * Changes in behavior
167 * Disabled OABI support on ARM EABI systems by default,
168 added --enable-arm-oabi option to enable it at configure time.
171 * Added experimental -k option to print stack trace after each traced syscall.
172 * Added -w option to produce stats on syscall latency.
173 (addresses Debian bug #457497).
174 * Added ARC architecture support.
175 * Added PTRACE_GETREGS API support on PowerPC.
176 * Enhanced Bionic libc and musl libc support.
177 * Enhanced tracing of x86 personality processes on x86_64 and x32.
178 * Enhanced tracing of ARM personality processes on AArch64.
179 * Enhanced 32/64bit personality detection on PowerPC.
180 * Implemented decoding of add_key, ioprio_get, ioprio_set, kexec_load, keyctl,
181 renameat2, and request_key syscalls.
182 * Robustified decoding of select, pselect, and io_submit syscalls.
183 * Enhanced decoding of delete_module, fanotify_init, fanotify_mark, fcntl,
184 setdomainname, sethostname, setns, and sync_file_range syscalls.
185 * Enhanced decoding of signal bitmasks.
186 * Enhanced decoding of file descriptors.
187 * Enhanced siginfo_t decoding.
188 * Enhanced PF_NETLINK decoding.
189 * Updated CLOCK_* constants
190 (addresses Fedora bug #1088455).
191 * Added new syscall entries to match Linux 3.16.
194 * Added shmat and shmdt to the set of memory mapping related syscalls.
195 * Fixed detaching from stopped processes.
196 * Fixed fanotify_mark decoding on 32bit architectures.
197 * Fixed offset decoding in preadv and pwritev syscalls.
198 * Fixed select decoding for glibc in _FORTIFY_SOURCE mode.
199 * Fixed decoding of epoll_ctl syscall with EPOLL_CTL_DEL argument.
200 * Fixed build when <sys/ptrace.h> and <linux/ptrace.h> conflict
201 (addresses Fedora bug #993384).
202 * Miscellaneous corrections in the manual page.
203 (Addresses Debian bug #725987).
205 Noteworthy changes in release 4.8 (2013-06-03)
206 ==============================================
208 * Changes in behavior
209 * In case of normal strace termination, when the trace output is
210 redirected to a pipe, strace now closes it and waits for the pipe
211 process termination before exit.
214 * Implemented tracing using PTRACE_SEIZE API (when available).
215 * Implemented more reliable PTRACE_GETREGSET-based process personality
216 detection on x86-64 and x32 (when available).
217 * Added -e trace=memory option for tracing memory mapping related syscalls.
218 * Documented -b option.
219 * Allowed exit status messages to be suppressed by giving -q option twice.
220 * Added AArch64 architecture support
221 (addresses Debian bug #693074 and Fedora bug #969858).
222 * Added support for OpenRISC 1000, Meta, and Xtensa architectures.
223 * Added tilegx personality support for Tile.
224 * Enhanced support of NOMMU architectures.
225 * Enhanced decoding of getdents, mmap, perf_event_open, ptrace, and
227 * Added new syscall entries to match Linux 3.9.
228 * Regenerated the list of common ioctl names from Linux 3.9.
229 * Updated the list of errno constants.
230 * Updated lists of AF_*, MADV_*, MAP_*, MSG_*, MS_*, PF_*, PR_*,
231 PTRACE_O_*, and TCP_* constants.
232 * Implemented decoding of UBI ioctls.
233 * Removed redundant "*32" ioctl names.
236 * Fixed ERESTARTNOINTR leaking to userspace on ancient kernels
237 (addresses Fedora bug #659382).
238 * Fixed kernel release string parsing
239 (addresses Debian bug #702309).
240 * Fixed decoding of *xattr syscalls
241 (addresses Fedora bug #885233).
242 * Fixed handling of files with 64-bit inode numbers by 32-bit strace
243 (addresses Fedora bug #912790).
244 * Fixed tracing forks on SPARC.
245 * Fixed decoding of fadvise64, fallocate, ftruncate64, io_submit, pread,
246 preadv, pwrite, pwritev, readahead, sigaltstack, sync_file_range, sysctl,
247 and truncate64 syscalls.
248 * Fixed categories of multiple syscalls on most of supported architectures.
249 * Fixed decoding of non-native 32-bit personality recv[m]msg syscalls.
250 * Fixed decoding of multiple 32-bit personality syscalls on x32.
251 * Fixed decoding of long long syscall arguments on ARM, MIPS/o32, PowerPC,
252 S390x, and Tile architectures.
253 * Fixed semtimedop decoding on S390x.
254 * Fixed sram_alloc decoding on Blackfin.
255 * Fixed build when process_vm_readv is a stab.
256 * Fixed build with older versions of libaio.h.
258 Noteworthy changes in release 4.7 (2012-05-02)
259 ==============================================
261 * Changes in behavior
262 * strace no longer suspends waitpid until there is a child
263 for waitpid'ing process to collect status from.
264 * strace no longer detaches from a tracee which is supposed
266 * strace now issues a new message: "+++ exited with EXITCODE +++"
267 which shows exact moment strace got exit notification,
268 analogous to existing "+++ killed by SIG +++" message.
271 * Added x32 personality support (x86_64 architecture).
272 * Added -y and -P options to print file descriptor paths and
273 filter by those paths.
274 * Added -I option to control strace interactivity.
275 * Allowed -p option to take comma or whitespace-separated list of PIDs.
276 * Added strace_log_merge script helper to merge timestamped "strace -ff"
278 * Implemented decoding of clock_adjtime, get_robust_list, migrate_pages,
279 preadv, prlimit64, process_vm_readv, process_vm_writev, pwritev,
280 recvmmsg, recvmsg, rt_tgsigqueueinfo, sendmmsg, setns, set_robust_list,
281 sched_rr_get_interval, splice, syslog, tee and vmsplice syscalls.
282 * Enhanced decoding of capget, capset, getrlimit, flistxattr, io_submit,
283 listxattr, setrlimit and swapon syscalls.
284 * Implemented decoding of loop and mtd ioctls.
285 * Added syscall entries for new linux syscalls.
286 * Added syscall entries for direct socket system calls on powerpc.
287 * Updated the list of errno constants.
288 * Updated lists of MSG_*, STA_*, and TCP_* constants.
289 * Regenerated the list of ioctl names from Linux 3.3.
290 * Enhanced switching between processes with different personalities.
291 * Enhanced signals reporting by using short signal names.
292 * Made ERESTART* messages more descriptive.
293 * Made parsing of numbers from strings more robust.
294 * Added support for compat_statfs64 and statfs64.f_flags.
295 * Changed read of data blocks to use single process_vm_readv syscall
296 (when available) instead of several PTRACE_PEEKDATA operations.
297 * Changed read of registers on x86 and x86-64 to use single PTRACE_GETREGS
298 operation instead of several PTRACE_PEEKUSER operations.
299 * Applied various optimizations to make strace work faster.
302 * Implemented proper handling of real SIGTRAPs on kernels supporting
303 PTRACE_O_TRACESYSGOOD.
304 (Addresses Fedora bug #162774).
305 * Fixed sockaddr_un.sun_path name in decoded output.
306 (Addresses Debian bug #554946).
307 * Fixed to avoid potential core file clobbering on exit.
308 (Addresses Debian bug #656398).
309 * Fixed a typo in documentation.
310 (Addresses Debian bug #653309).
311 * Fixed decoding of timer id returned by timer_create.
312 * Fixed epoll_create1, epoll_wait and epoll_pwait decoding.
313 * Fixed *at syscalls flags decoding.
314 * Fixed ARM EABI 64-bit syscall's arguments decoding.
315 * Fixed semtimedop decoding on s390.
316 * Fixed osf_sigprocmask decoding on alpha.
317 * Fixed ipc and socket subcall decoding on several architectures.
318 * Corrected syscall entries for epoll_pwait, epoll_create, epoll_ctl,
319 epoll_wait, mincore, mlockall, prctl, reboot, sendfile, sendfile64,
320 sendmsg, sgetmask, ssetmask, swapon, tgkill and tkill syscalls.
321 * Corrected io_* syscall entries on ARM.
322 * Fixed PID prefix printing in "strace -oLOG -ff -p1 -p2 -p3" case.
323 * Fixed logging of unfinished lines in "strace -oLOG -ff" case.
324 * Fixed build when libaio-devel is not available.
325 * Fixed configure checks for PTRACE_* constants.
326 * Fixed compilation warnings remained on several architectures.
329 * Removed all non-Linux code. After years of neglect, that dead code
330 just hampered further strace development.
331 * Linux kernel >= 2.6.18 is recommended. Older versions might still
332 work but they haven't been thoroughly tested with this release.
334 Noteworthy changes in release 4.6 (2011-03-15)
335 ==============================================
337 * Changes in behavior
338 * Print diagnostic information about changes in personality mode to
339 standard error instead of standard output.
342 * Implemented a new method of following clone, fork, and vfork
343 syscalls using the Linux kernel's explicit facilities for tracing
344 creation of threads and child processes.
345 * Implemented CLONE_PARENT and CLONE_UNTRACED flags handling.
346 * Implemented decoding of TLS syscalls on m68k.
347 * Implemented biarch support on powerpc64.
348 * Implemented biarch support for getrlimit() and setrlimit().
349 * Implemented decoding of struct ucred in getsockopt SO_PEERCRED.
350 * Implemented SOL_SCTP socket options decoding.
351 * Added HDIO_* ioctl names.
352 (Addresses Debian bug #450953).
353 * Added LOOP_* ioctl names.
354 * Updated lists of CLOCK_*, CLONE_*, MS_*, and SOL_* constants
355 to match Linux 2.6.37.
356 * Updated the list of IPPROTO_* constants to match netinet/in.h.
357 * Implemented decoding of HDIO_* and BLK* ioctls.
358 * Added MicroBlaze architecture support.
359 * Added new syscall entries to match Linux 2.6.37.
360 * Regenerated list of ioctl names from Linux 2.6.37.
361 * Enhanced signal notification decoding.
362 * Documented -C and -D options.
365 * Fixed fetching syscall arguments on m68k.
366 * Fixed an error when judging whether a process has children.
367 * Fixed get/set_robust_list syscall numbers for powerpc.
368 * Fixed a corner case in printing clone flags.
369 * Fixed cross-compiling issues.
370 * Fixed build issues on powerpc64, SH and SPARC.
371 * Fixed syscall flags of fstatat*, mmap, mmap2, fadvise64*, swapoff,
372 fgetxattr, flistxattr, fremovexattr, epoll_create, fallocate,
373 fanotify_init, and fanotify_mark syscalls.
374 * Fixed decoding of get[ug]id, gete[ug]id and setfs[ug]id return values.
375 * Fixed biarch support in IO dumping.
376 * Fixed raw exit_group decoding.
377 * Fixed decoding of file descriptors on 64-bit architectures.
378 * Fixed a corner case in waitpid handling.
379 (Addresses Red Hat bug #663547).
380 * Fixed stat64 decoding on mips
381 (Addresses Debian bug #599028).
382 * Fixed misleading italics in the manual page.
383 (Addresses Debian bug #589323).
385 Noteworthy changes in release 4.5.20 (2010-04-13)
386 =================================================
389 * Implemented decoding of new linux syscalls: inotify_init1, recvmmsg.
390 * Implemented basic decoding of new linux syscalls: preadv, pwritev,
391 rt_tgsigqueueinfo, perf_event_open.
392 * Enhanced decoding of recently added syscalls on non-x86 architectures
393 by replacing a bare decoder with elaborate parsers enabled earlier
395 * Implemented -C option to combine regular and -c output.
396 (Addresses Debian bug #466196)
397 * Enhanced decoding of mbind and mremap syscalls.
398 * Enhanced SOL_PACKET socket options decoding.
399 * Regenerated list of ioctl names from linux 2.6.33.
400 * Added TILE architecture support.
403 * Fixed build with Linux kernel headers 2.6.32-rc5+.
404 (Addresses Debian bug #560516 and Fedora bug #539044)
405 * Fixed build on mips.
406 * Fixed handling of Linux systems without struct statfs64.
407 * Fixed reporting signal mask by sigreturn on powerpc.
408 * Fixed potential stack buffer overflow in select decoder.
409 (Addresses Fedora bug #556678)
410 * Corrected msgsnd indirect ipccall decoding.
411 * Corrected decoding of 64bit syscalls.
412 (Addresses Debian bug #570603)
413 * Corrected getsockopt decoding on architectures where
414 sizeof(long) > sizeof(int).
415 (Addresses Debian bug #494844)
416 * Corrected decoding of epoll_pwait.
417 (Addresses Debian bug #513014)
418 * Corrected handling of killed threads.
420 Noteworthy changes in release 4.5.19 (2009-10-21)
421 =================================================
423 * Changes in behavior
424 * When command exits, strace now exits with the same exit status.
425 If command is terminated by a signal, strace terminates itself
426 with the same signal, so that strace can be used as a wrapper
427 process transparent to the invoking parent process.
428 When using -p option, the exit status of strace is zero unless
429 there was an unexpected error in doing the tracing.
430 (Addresses Fedora bug #105371 and Debian bug #37665)
433 * Implemented decoding of new Linux syscalls: accept4, dup3,
434 epoll_create1, eventfd2, inotify_init1, pipe2, signalfd4.
435 * Implemented decoding of socket type flags introduced in Linux 2.6.27.
436 * Implemented decoding of accept4 socketcall.
437 * Enhanced prctl decoding.
438 * Enhanced nanosleep decoding.
439 * Enhanced ptrace decoding.
440 * Enhanced futex decoding.
441 * Enhanced CAP_* decoding.
442 * Enhanced SIOCS* ioctls decoding.
443 * Enhanced fcntl F_* flags decoding.
444 * Enhanced semop/semtimedop decoding.
445 * Updated ARM architecture support.
446 * Added Blackfin architecture support.
447 * Added AVR32 architecture support.
448 * Added CRIS architecture support.
449 * Made strace detect when traced process suddenly disappeared.
452 * Fixed syscall numbers for tee and sync_file_range.
453 (Addresses Debian bug #503124)
454 * Fixed several bugs in strings decoder, including potential heap
456 (Addresses Fedora bugs #470529, #478324 and #511035)
457 * Marked sendfile(2) as a network syscall.
458 (Addresses Debian bug #509499)
459 * Fixed accept(2) decoding.
460 (Addresses Debian bug #507573)
461 * Fixed sigtimedwait(2) decoding.
462 * Fixed build on ARM EABI.
463 (Addresses Debian bugs #520084 and #535564, and Fedora bug #507576)
464 * Fixed display of 32-bit fcntl(F_SETLK) on 64-bit architectures.
465 (Addresses Red Hat bug #471169)
466 * Fixed display of 32-bit argv array on 64-bit architectures.
467 (Addresses Fedora bug #519480)
468 * Fixed display of 32-bit struct sigaction on 64-bit architectures.
469 * Fixed HPPA architecture support.
470 (Addresses Debian bugs #437928 and #546619)
475 * Support new Linux/PPC system call subpage_prot and PROT_SAO flag.
476 * In sigaction system call, display sa_flags value along with SIG_DFL/SIG_IGN.
481 * -F is now deprecated, -f has traced vfork too on Linux for a long time now.
482 * Print O_CLOEXEC, MSG_CMSG_CLOEXEC flag bits.
483 * Improved output for prctl system call on Linux.
484 * Improved support for Linux/ARM.
485 * SA_NOMASK is now spelled SA_NODEFER, and SA_ONESHOT is spelled SA_RESETHAND.
490 * Improved output for delete_module, futex, and mbind system calls on Linux.
491 * Improved output for SG_IO ioctls on Linux.
492 * Support new Linux system calls move_pages, utimensat, signalfd, timerfd,
493 eventfd, getcpu, epoll_pwait.
498 * Several biarch improvements.
499 * Improved output for adjtimex, sysctl, quotactl, mount, umount.
500 * Support new Linux system calls *at, inotify*, pselect6, ppoll and unshare.
505 * Accept numeric system calls in -e.
510 * Introduce "-e trace=desc".
515 * Better x86-64 support for IA32 processes.
516 * Update PowerPC system calls.
517 * Better printing for Linux aio system calls.
521 * Quick fix release for build issues.
522 * One fix for Linux/ARM system call table.
527 * Print fault address for SIGSEGV/SIGBUS signals when available.
532 * Improve socket ioctl printing.
533 * Update Linux/IA64 syscall list.
534 * Fix Linux/x86-64 syscall argument extraction for 32-bit processes.
535 * Improve mount flags printing.
536 * Support symbolic printing of x86_64 arch_prctl parameters.
541 * Update syscall tables for Alpha, ARM, HPPA.
542 * Support new Linux syscalls mbind, set_mempolicy, get_mempolicy, waitid.
543 * Support Linux syscalls fadvise64, fadvise64_64, and epoll_*.
544 * Improve ioctl command name matching.
545 * Print RTC_* ioctl structure contents.
546 * Support newer RLIMIT_* values.
547 * Print struct cmsghdr details in sendmsg.
552 * Print attribute values in *xattr system calls on Linux.
553 * Include pread and pwrite calls in -e read and -e write tracing.
554 * Update SO_* and IP_* value lists and add IPV6_* values for socket options.
555 * Print clock_t values symbolically in Linux clock_* system calls.
559 * Bug fixes, Linux ioctl updates.
560 * David Miller contributed support for Linux/SPARC64.
568 * Update Linux ioctl lists.
569 * Update PF_* and AF_* value lists.
570 * The 4.5.3 -p behavior for NPTL threads applies only under -f, and got fixed.
575 * On Linux using NPTL threads, -p will now attach to all threads in a process.
576 * Handle new mq_* system calls in Linux 2.6.6 and later.
581 * Report some new VM_* bit values on Linux.
582 * Better output for Linux sched_* system calls.
587 * Display multiple ioctl name matches on Linux.
591 * New port to AMD's x86-64 architecture. One strace binary can
592 handle both new x86-64 and old i386 processes.
593 * Fixed support for LFS64 calls.
594 * New switch -E to add/remove environment variables for the command.
595 * Merged s390/s390x port.
596 * Trace an unbounded number of processes.
597 * Handle numerous new system calls in Linux 2.5, and new threads semantics.
598 * Fixed bugs with attach/detach leaving things stopped.
599 * Fixed traced process seeing ECHILD despite live, traced children
600 in waitpid calls with WNOHANG.
601 * Stuart Menefy contributed a port to Linux/SH.
602 * Stephen Thomas contributed a port to Linux/SH64.
603 * Many other bug fixes.
607 * Fix Linux/ia64 support, looks like someone renamed a few things on us
608 * Fix the ioctl setup for Linux, turned out it did not really work.
609 Improve the ioctl extracter as well so we decode some more ones.
613 * compile fixes for Linux/mips
617 * Linux ia64 and hppa ports added
618 * The usual Linux syscall updates (includes 32bit uid/gid support),
619 * Linux ioctl list updated
620 * Support IPv6 scope ids
621 * FreeBSD/i386 port added
622 * UnixWare and Solaris updates
623 * Better support for tracing multithreaded processes in Linux
627 * Compiles on glibc2.0 systems again
628 * Linux/S390 port added
629 * The usual Linux syscall updates
630 * we can follow fork on arm now
634 * Linux/MIPS port added
635 * Lots of Linux updates again
636 * Improved IPv6 support
642 * Compiles on glibc2.0 systems again
646 * Get stat structure properly on Linux 64bit archs
647 * Personalities work again
648 * Compile correctly on SunOS again
654 * Linux (ultra)sparc fixes
661 * add support for more Linux architectures (powerpc, sparc, arm)
662 * support lots more Linux syscalls
663 * fix signal handling
664 * add IPX and IPIP support
665 * check stray syscall after execv
666 * fix hanging children
668 Changes in version 3.1
669 ======================
672 * Linux 68k is supported
673 * Linux alpha is supported
674 * configure is upgraded to autoconf 2.x
675 * using -f in combination with -e now works correctly
676 * output can be piped to a program
677 * tracing setuid programs works better
678 * it is now reasonable to install strace setuid to root in some circumstances
679 * new useful tracing names like file and process to trace whole
680 classes of system calls, e.g. -efile traces all system calls that
681 take a file name as an argument
682 * IPC calls on SunOS 4.1.x are decoded
683 * Linux program memory is reliably dereferenced
684 * Linux decodes at least the name of all syscalls as of pre2.0.4
685 * various cosmetic changes and bug fixes
687 Changes from versions 2.x to version 3.0
688 ========================================
690 * filename arguments are neither abbreviated nor stringified
691 * string arguments are now true C strings using octal instead of hex by default
692 * preprocessor constants are never shortened (e.g. was RDONLY => now O_RDONLY)
693 * by default the output for multiple processes now goes into one file
694 * all structures, vectors, bitsets, etc. use consistent output formats
695 * the -c option now means count calls, -i does what the old -c used to do
697 New Features in version 3.0
698 ===========================
700 * non-ascii strings can be optionally printed entirely in hex
701 * the output format is readable when mutiple processes are generating output
702 * exit values are printed in an alignment column
703 * is is possible to suppress messages about attaching and detaching
704 * various tracing features can be enabled on a per syscall/signal/desc basis
705 * selective tracing of syscalls
706 * selective printing of syscall structures
707 * selective abbreviation of long structures on a per syscall basis
708 * selective printing of raw syscall arguments and results
709 * selective tracing of signals
710 * selective dumping of all I/O read from file descriptors
711 * selective dumping of all I/O written to file descriptors
712 * optional counting of time, calls, and errors for each syscall
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