1 Noteworthy changes in release ?.?? (????-??-??)
2 ===============================================
5 * Warning is now issued when -F option is used.
6 * Warning is now issued when a tracee with unsupported personality
10 * Implemented decoding of netlink descriptor attributes as file descriptors.
11 * Implemented decoding of hugetlb page size selection flags.
12 * Implemented decoding of BPF_PROG_TEST_RUN, BPF_PROG_GET_NEXT_ID,
13 BPF_MAP_GET_NEXT_ID, BPF_PROG_GET_FD_BY_ID, BPF_MAP_GET_FD_BY_ID,
14 and BPF_OBJ_GET_INFO_BY_FD commands of bpf syscall.
15 * Enhanced decoding of get_thread_area, memfd_create, modify_ldt,
16 perf_event_open, reboot, set_thread_area, and shmget syscalls.
17 * Implemented decoding of KVM_* and DM_LIST_DEVICES ioctl commands.
18 * Enhanced decoding of getsockopt and setsockopt syscalls for SOL_NETLINK
20 * Enhanced decoding of BPF_MAP_CREATE command of bpf syscall.
21 * Print values returned by mq_open syscall and first arguments
22 of mq_getsetattr, mq_notify, mq_timedreceive, and mq_timedsend syscalls
24 * Updated lists of MSG_*, NT_*, and SHM_* constants.
25 * Added manual page for the strace-log-merge command.
26 * Updated lists of ioctl commands from Linux 4.15.
27 * Implemented biarch support for s390x.
28 * Implemented an optional support for symbol demangling in strace -k output
29 (activated by --with-libiberty configure option).
30 * Information about availability of demangling and reliable personality
31 decoding (on architectures with multiple personalities) is now available
33 * Enhanced manual page.
36 * Fixed multi-personality support in cross builds.
37 * Added mq_getsetattr, mq_notify, mq_open, mq_timedreceive, and mq_timedsend
38 syscalls to %desc tracing set.
39 * Fixed path tracing support for mmap syscalls with indirect arguments.
40 * Fixed corner cases in handling of strace -ff -ttt logs by strace-log-merge.
41 * Error counts that exceed one billion are now printed correctly in call
43 * Fixed call summary header for x32 personality.
44 * Changes of tracee personalities are reported more reliably.
47 * A C compiler that supports "for" loop initial declarations is now required.
48 * Inability to configure multiple personality support on architectures where
49 multiple personalities are supported leads to configuration failure during
50 build now. Use --enable-mpers=check to revert to the old behaviour.
51 * Build-time requirement for the mpers support has been lowered from gawk 4
54 Noteworthy changes in release 4.20 (2017-11-13)
55 ===============================================
58 * Implemented decoding of NETLINK_NETFILTER netlink message types and flags.
59 * Implemented decoding of SECCOMP_GET_ACTION_AVAIL operation of seccomp
61 * Updated lists of ARPHRD_*, BPF_*, ETH_P_*, LOOP_*, MADV_*,
62 MEMBARRIER_CMD_*, MFD_*, SECCOMP_*, SO_*, SOL_*, TCP_*, and UFFD_FEATURE_*
64 * Added decoding of statx syscall on hppa.
65 * Updated lists of ioctl commands from Linux 4.14.
68 * Fixed powerpc personality support on powerpc64.
70 Noteworthy changes in release 4.19 (2017-09-05)
71 ===============================================
73 * Changes in behaviour
74 * Changed formatting of personality names on tile architecture in order
75 to make it in line with other multi-personality architectures.
76 * Changed field output order in struct v4l2_requestbuffers to improve in/out
78 * Changed handling of multiple signal= specifications in an injection
79 expression: multiple specification now leads to error instead of implicit
80 usage the last specification.
83 * Enhanced decoding of optlen argument of getsockopt syscall.
84 * Enhanced decoding of SO_LINGER option of getsockopt and setsockopt syscalls.
85 * Enhanced decoding of SO_PEERCRED option of getsockopt syscall.
86 * Enhanced decoding of IP_ADD_MEMBERSHIP, IP_DROP_MEMBERSHIP,
87 IPV6_ADD_MEMBERSHIP, IPV6_DROP_MEMBERSHIP, IPV6_JOIN_ANYCAST,
88 IPV6_LEAVE_ANYCAST, MCAST_JOIN_GROUP, and MCAST_LEAVE_GROUP options
89 of setsockopt syscall.
90 * Enhanced decoding of KEYCTL_DH_COMPUTE operation of keyctl syscall
91 (KDF parameters decoding).
92 * Implemented decoding of KEYCTL_RESTRICT_KEYRING operation of keyctl syscall.
93 * Enhanced decoding of UFFDIO_API ioctl command.
94 * Enhanced decoding of BPF_PROG_LOAD, BPF_MAP_CREATE, BPF_MAP_LOOKUP_ELEM,
95 and BPF_MAP_GET_NEXT_KEY commands of bpf syscall.
96 * Implemented decoding of linux socket filter programs specified
97 for SO_ATTACH_FILTER and SO_ATTACH_REUSEPORT_CBPF socket options.
98 * Implemented decoding of inet_diag_req_v2, inet_diag_req_compat,
99 packet_diag_msg, and smc_diag_msg netlink attributes of NETLINK_SOCK_DIAG.
100 * Implemented NETLINK_SELINUX protocol specific decoding.
101 * Implemented decoding of netlink message ack flags.
102 * Implemented decoding of nlmsgerr netlink attributes.
103 * Implemented basic protocol specific decoding of NETLINK_CRYPTO.
104 * Implemented decoding of crypto_user_alg netlink attributes
106 * Implemented basic protocol specific decoding of addr, addrlabel, dcb, link,
107 mdb, neigh, neightbl, netconf, nsid, route, rule, tc, and tca messages
109 * Implemented decoding of NETLINK_KOBJECT_UEVENT messages.
110 * Improved handling of unexpected tracees (the ones that cloned with
111 CLONE_PARENT/CLONE_PTRACE or called PTRACE_TRACEME on themselves): they
112 are now PTRACE_DETACH'ed instead of PTRACE_CONT'ed.
113 * Updated lists of BPF_*, KEY_*, RWF_*, SCM_*, SO_*, and *_MAGIC constants.
114 * Added decoding of arch_prctl syscall on x86.
115 * Added decoding of seccomp, bpf, userfaultfd, membarrier, mlock2,
116 copy_file_range, preadv2, pwritev2, and statx on alpha.
117 * Added decoding of statx syscall on microblaze.
118 * Added decoding of s390_guarded_storage syscall on s390.
119 * Updated lists of ioctl commands from Linux 4.13.
120 * Enhanced manual page.
123 * Fixed printing of group_req structure on non-native personalities.
124 * Fixed output formatting of blkpg_ioctl_arg, dm_name_list, and iocb
126 * Fixed formatting of nul-terminated strings which have kernel-imposed size
128 * Fixed printing of paths that hit PATM_MAX limit in order to match kernel's
130 * Fixed build warnings on Android mips64.
131 * Fixed unused function "is_negated_errno" build warning when built
133 * Fixed syscall number and arguments retrieval behaviour on sparc64 and
134 mips o32 after prctl(PR_SET_DUMPABLE, 0) makes PTRACE_PEEKTEXT impossible
135 to use if Linux kernel has commit v4.10-rc1~114^2~2.
136 * Fixed path tracing for execveat, symlink, symlinkat, inotify_add_watch,
137 and inotify_init syscalls.
138 * Fixed personality switch printing on sparc64 and risc-v.
140 Noteworthy changes in release 4.18 (2017-07-05)
141 ===============================================
144 * Implemented decoding of SCM_TIMESTAMP* control messages.
145 * Implemented decoding of netlink NLMSG_DONE messages.
146 * Implemented decoding of netlink generic nlmsg_type and nlmsg_flags.
147 * Implemented decoding of NETLINK_AUDIT, NETLINK_NETFILTER, NETLINK_ROUTE,
148 NETLINK_SELINUX, NETLINK_SOCK_DIAG, and NETLINK_XFRM message types.
149 * Implemented decoding of NETLINK_GENERIC protocol families.
150 * Implemented basic protocol specific decoding of AF_INET, AF_INET6,
151 AF_NETLINK, AF_PACKET, AF_SMC, and AF_UNIX messages of NETLINK_SOCK_DIAG.
152 * Implemented basic decoding of netlink attributes.
153 * Implemented basic protocol specific decoding of AF_INET, AF_NETLINK,
154 AF_PACKET, AF_SMC, and AF_UNIX netlink attributes of NETLINK_SOCK_DIAG.
155 * Implemented decoding of inet_diag_msg, netlink_diag_msg, and unix_diag_msg
156 netlink attributes of NETLINK_SOCK_DIAG.
157 * Updated lists of ARPHRD_*, KEYCTL_*, NDIAG_SHOW_*, RTM_*, SCM_*, SCTP_*,
158 SO_*, V4L2_*, and prctl ARCH_* constants.
159 * Updated lists of ioctl commands from Linux 4.12.
162 * In interactive mode (-I2), those signals that were blocked at startup
163 will remain blocked for the whole period of strace execution.
164 * strace no longer resets SIGCHLD handler in tracees to the default action.
165 * When traced command is terminated by a blocked signal, strace unblocks
166 that signal to ensure its own termination with the same signal.
167 * Fixed corner cases in decoding of old sigaction syscall.
168 * Fixed build with old kernel headers on mips.
169 * Fixed build on aarch64 and tile with glibc >= 2.26.
170 * Fixed build on arc and nios2.
172 Noteworthy changes in release 4.17 (2017-05-24)
173 ===============================================
175 * Changes in command line syntax
176 * Syscall classes specified in -e trace= option now have % prefix (like
177 -e trace=%process). Old style class names without leading % are still
178 supported, but considered deprecated now.
181 * Optimized syscall filtering.
182 * Improved representation of timestamps.
183 * Enhanced decoding of sched_setattr syscall.
184 * Added -e trace=%stat option for tracing variants of stat syscall.
185 * Added -e trace=%lstat option for tracing variants of lstat syscall.
186 * Added -e trace=%fstat option for tracing variants of fstat and fstatat
188 * Added -e trace=%%stat option for tracing syscalls used for querying file
189 status information (stat, lstat, fstat, fstatat, statx, and their
191 * Added -e trace=%statfs option for tracing statfs, statfs64 and statvfs
193 * Added -e trace=%fstatfs option for tracing fstatfs, fstatfs64 and fstatvfs
195 * Added -e trace=%%statfs option for tracing syscalls used for querying file
196 system statistics information (statfs-like, fstatfs-like and ustat).
197 * Added -e trace=/regex option for filtering syscalls using regular
199 * Added support for prepending of question mark before syscall qualification
200 in -e trace expressions in order to suppress error in case no syscalls
201 matched the provided qualification.
202 * Implemented decoding of signal mask in rt_sigreturn syscall on alpha, arc,
203 arm, avr32, bfin, cris, hppa, m68k, metag, microblaze, mips, nios2, or1k,
204 powerpc, powerpc64, riscv, sh, sh64, sparc, sparc64, tile, x86, and xtensa
206 * Implemented decoding of statx syscall.
207 * Implemented decoding of NS_* ioctl commands.
208 * Implemented decoding of the remaining V4L2_BUF_TYPE_* types.
209 * Implemented decoding of VIDIOC_[SG]_TUNER ioctl commands.
210 * Implemented decoding of NLMSG_ERROR netlink messages.
211 * Improved decoding of BPF_PROG_ATTACH command of bpf syscall.
212 * Improved decoding of misplaced parts in DM_* ioctl commands.
213 * Updated lists of ioctl commands from Linux 4.11.
216 * Fixed decoding of flags argument of preadv2 and pwritev2 syscalls on x32.
217 * Fixed the number of arguments and tracing flags of alpha specific syscalls.
218 * Fixed decoding of old sigsuspend syscall on alpha, cris, mips, powerpc,
219 powerpc64, sh, sh64, sparc, and sparc64.
220 * Fixed decoding of sgetmask and ssetmask syscalls on 64-bit architectures.
221 * Fixed decoding of netlink messages received within struct msghdr.
222 * Worked around a bug in miscompiled aarch64 kernels leading to the 3rd
223 argument of sched_getattr syscall being not quite 32-bit.
224 * Fixed corner cases of printing inaccessible times argument of utimes
225 and futimesat syscalls.
227 Noteworthy changes in release 4.16 (2017-02-14)
228 ===============================================
231 * Implemented syscall return value injection (-e inject=SET:retval= option).
232 * Implemented signal injection (-e inject=SET:signal= option).
233 * Implemented decoding of SUID_DUMP_* constants in PR_[GS]ET_DUMPABLE.
234 * Implemented decoding of all SG_* ioctl commands.
235 * Implemented decoding of ustat syscall.
236 * Implemented decoding of BPF_OBJ_PIN, BPF_OBJ_GET, BPF_PROG_ATTACH,
237 and BPF_PROG_DETACH commands of bpf syscall.
238 * Enhanced decoding of sg_io_hdr and sg_io_v4 structures.
239 * Enhanced decoding of get_robust_list, getrandom, io_submit, set_robust_list
241 * Enhanced decoding of entities of kernel long type on x32 and mips n32 ABIs.
242 * Updated lists of IP_*, IPV6_*, and LOOP_* constants.
243 * Updated lists of ioctl commands from Linux 4.10.
244 * Added decoding of recently added syscalls on avr32, microblaze, ppc,
248 * Fixed pathmatch of oldselect syscall on 64-bit architectures.
249 * Fixed decoding of mmap2 syscall on s390 when arguments are not available.
250 * Fixed decoding of kexec_file_load, mprotect, pkey_mprotect, prctl, preadv*,
251 and pwritev* syscalls on x32.
252 * Fixed printing of string arguments of getxattr and setxattr syscalls
253 when -s option is used to limit the printed string size.
254 * Fixed decoding of ifconf, ifreq, and loop_info structures on non-native
256 * Fixed decoding of SG_* and LOOP_* ioctl commands.
257 * Fixed build on mips with musl libc.
258 * Fixed cross-building of ioctlsort.
259 * Applied minor formatting fixes to the manual page.
261 Noteworthy changes in release 4.15 (2016-12-14)
262 ===============================================
264 * Changes in behavior
265 * Time stamps are now printed according to ISO 8601.
266 * Changed output format of val3 parameter of futex FUTEX_WAKE_OP operation.
267 * The last argument of mincore, sched_getaffinity, and sched_setaffinity
268 syscalls is now formatted as an array.
271 * Implemented syscall fault injection (-e fault=... option).
272 * Implemented decoding of DM_* ioctl commands.
273 * Implemented decoding of attr parameter of perf_event_open syscall.
274 * Implemented decoding of pkey_alloc, pkey_free, and pkey_mprotect syscalls.
275 * Implemented dumping of mq_timedsend and mq_timedreceive syscalls.
276 * Implemented decoding of PR_SET_FP_MODE and PR_GET_FP_MODE operations
278 * Implemented PTRACE_GETREGS API support on m68k.
279 * Updated lists of ARCH_*, BPF_*, BTRFS_*, FALLOC_*, MS_*, *_MAGIC,
280 and V4L2_* constants.
281 * Updated lists of ioctl commands from Linux 4.9.
282 * Added decoding of recently added syscalls on arc, x32, and xtensa.
283 * Enhanced manual page.
286 * Fixed corner cases in decoding of exit, exit_group, futimesat, getgroups,
287 getresuid, init_module, inotify_init1, kcmp, kexec_load, lookup_dcookie,
288 mq_getsetattr, mq_notify, mq_open, mq_timedreceive, mq_timedsend,
289 name_to_handle_at, prctl, process_vm_readv, process_vm_writev, setfsuid,
290 setgroups, setns, unshare, and utimes syscalls.
291 * Fixed handling of verbose flag in printing of controls array
292 of struct v4l2_ext_controls.
293 * Fixed omission of field names in the output of capability, sigaction,
294 sigevent, statfs, timespec, timeval, and utimbuf structures.
295 * Fixed printing of unknown syscalls in siginfo structure.
296 * Fixed decoding of ioctl constants on m68k.
297 * Fixed cris architecture support.
298 * Fixed cross build when host compiler does not support the same
299 set of warning flags as the cross compiler.
300 * Fixed build on SLE10 and SLE11.
302 Noteworthy changes in release 4.14 (2016-10-04)
303 ===============================================
305 * Changes in behavior
306 * When using -p option without a command and no processes has been attached,
307 strace exits with exit status 1.
310 * Added printing of the mode argument of open and openat syscalls
311 when O_TMPFILE flag is set. (Addresses Fedora bug #1377846).
312 * Enhanced -e abbrev=set, -e raw=set, and -e verbose=set.
313 * Enhanced decoding of futex, keyctl, quotactl, timerfd_settime,
314 and aio family syscalls.
315 * Implemented fetching of the 7th subcall argument on mips o32.
316 * Updated lists of BPF_*, ETH_P_*, KEXEC_ARCH_*, SCTP_*, TCP_*, and *_MAGIC
318 * Updated lists of ioctl commands from Linux 4.8.
319 * Added decoding of new syscalls on sh and sh64.
320 * Added RISC-V architecture support.
323 * Marked io_setup and io_destroy as memory mapping related syscalls.
324 * Fixed leakage of placeholder descriptors to tracees.
325 * Fixed printing of mode_t, umode_t, and umask types.
326 * Fixed decoding of iovec arrays without a limit on total data size.
327 * Fixed decoding of fadvise64, fallocate, futex, keyctl, quotactl, readahead,
328 and ipc family syscalls.
329 * Fixed decoding of invalid syscalls mapped to indirect subcalls.
330 * Fixed decoding of struct btrfs_ioctl_vol_args_v2 on non-native
332 * Fixed decoding of PTRACE_DETACH on sparc and sparc64.
333 * Fixed decoding of struct stat64 on sparc64.
334 * Fixed decoding of uid and gid-related syscalls on sparc64.
335 * Fixed decoding of the forth argument of semctl syscall on sparc64.
336 * Fixed values of tty ioctl constants on sparc64.
337 * Fixed sparc personality support on sparc64.
339 Noteworthy changes in release 4.13 (2016-07-26)
340 ===============================================
343 * Implemented a general netlink socket parser.
344 * Enhanced decoding of socket addresses.
345 * Enhanced decoding of cmsghdr, msghdr, and mmsghdr structures.
346 * Enhanced decoding of accept, accept4, bind, getpeername, getsockname,
347 ipc, recvfrom, recvmsg, recvmmsg, sendto, sendmmsg, and socketcall syscalls.
348 * Updated lists of AF_*, BPF_MAP_TYPE_*, KEY_*, KEYCTL_*, RWF_*, SS_*,
349 and *_MAGIC constants.
350 * Updated lists of ioctl commands from Linux 4.7.
353 * Fixed decoding of pid_t argument of prlimit64 syscall.
354 * Fixed sign extension issues in the parser of struct rusage.
355 * Fixed race condition in decoding of timeout argument of recvmmsg and
356 rt_sigtimedwait syscalls.
357 * Fixed build with fresh linux kernel headers.
359 Noteworthy changes in release 4.12 (2016-05-31)
360 ===============================================
363 * Implemented simultaneous use of -p option and tracing of a command.
364 (addresses Debian bug #549942).
365 * Implemented caching of netlink conversations to reduce amount of time
366 spent in decoding socket details in -yy mode.
367 * Implemented -yy mode decoding of protocol:portid pairs associated with
368 netlink socket descriptors.
369 * Implemented decoding of copy_file_range, preadv2, and pwritev2 syscalls.
370 * Implemented dumping of preadv, preadv2, pwritev, pwritev2, and vmsplice
372 * Implemented decoding of BTRFS_* and UFFDIO_* ioctl commands.
373 * Enhanced decoding of BLK*, EVIOC*, RTC_*, and VIDIOC_* ioctl commands.
374 * Enhanced decoding of fstatfs, fstatfs64, get_mempolicy, getdents,
375 getdents64, getgroups, getpriority, kill, mbind, migrate_pages, mknod,
376 mknodat, personality, poll, ppoll, quotactl, rt_sigpending,
377 rt_sigqueueinfo, rt_sigtimedwait, rt_tgsigqueueinfo, sched_getaffinity,
378 sched_setaffinity, seccomp, set_mempolicy, setgroups, setpriority, statfs,
379 statfs64, tgkill, waitid, and xattr family syscalls.
380 * Enhanced decoding of getxpid, getxuid, and getxgid syscalls on alpha.
381 * Enhanced decoding of pipe syscall on alpha, ia64, mips, sh, and sparc.
382 * Added decoding of bind, listen, and setsockopt direct syscalls on sparc.
383 * Added decoding of osf_statfs64 and osf_fstatfs64 syscalls on alpha.
384 * Added decoding of fadvise64 and fadvise64_64 on s390.
385 * Updated lists of AF_*, BPF_MAP_TYPE_*, CLONE_*, EPOLL*, IPV6_*, MADV_*,
386 MSG_*, PTRACE_*, SEGV_*, SO_*, SOL_*, *_MAGIC, and quotactl constants.
387 * Updated lists of ioctl commands from Linux 4.6.
390 * Fixed build on arc, metag, nios2, or1k, and tile architectures.
391 * Fixed decoding of 32-bit times syscall return value on 64-bit architectures.
392 * Fixed decoding of mlock2 syscall on sparc.
393 * Fixed decoding of osf_shmat syscall on alpha.
394 * Fixed decoding of syscalls unknown to the kernel on s390/s390x.
395 (addresses Debian bug #485979 and Fedora bug #1298294).
396 * Fixed decoding of preadv syscall in case of short read.
397 * Fixed decoding and dumping of readv syscall in case of short read.
398 * Fixed dumping of recvmsg and recvmmsg syscalls in case of short read.
399 * Fixed decoding of mincore syscall's last argument.
400 * Fixed remaining errors in mapping between syscall numbers and numbers
401 of syscall arguments.
402 * Applied various fixes to strace-graph script.
404 Noteworthy changes in release 4.11 (2015-12-21)
405 ===============================================
407 * Changes in behavior
408 * Some syscalls have different names depending on architecture and
409 personality. In these cases, syscall filtering and printing now
410 consistently uses the names that match corresponding __NR_* kernel
411 macros of the tracee's architecture and personality.
412 * Added strace prefix to all diagnostic messages.
415 * Enhanced and extended test suite.
416 * Implemented reliable tracing of processes whose personality differs
417 from the personality of strace, fixed decoding of 32-bit personality
418 syscalls on 64-bit architectures.
419 * When some data referenced by syscall arguments is irrelevant or cannot
420 be read from tracee's memory, strace now prints its address consistently.
421 * When a syscall is restarted using restart_syscall mechanism, strace now
422 shows the syscall name on architectures that expose this information.
423 * Print values returned by epoll_create1, eventfd, eventfd2, fanotify_init,
424 inotify_init1, perf_event_open, pipe, pipe2, signalfd, signalfd4, socket,
425 socketpair, timerfd, and timerfd_create syscalls, as well as F_DUPFD and
426 F_DUPFD_CLOEXEC fcntl commands, as file descriptors.
427 * Optimized decoding of indirect socket syscalls.
428 * Implemented decoding of nanoseconds along with seconds in stat family
429 syscalls (addresses Fedora bug #1251176).
430 * Implemented decoding of struct statfs.f_flags in statfs syscall.
431 * Implemented decoding of siginfo_t.si_syscall and siginfo_t.si_arch
433 * Implemented decoding of indirect syscall on mips o32.
434 * Implemented decoding of IPPROTO_IP control messages.
435 * Implemented decoding of setsockopt syscall multicast arguments.
436 * Enhanced decoding of struct sigevent.
437 * Enhanced decoding of block, loop, mtd, ptp, rtc, SG_IO, socket, tty,
438 and v4l2 ioctl syscall arguments.
439 * Enhanced decoding of epoll_create, fcntl, fcntl64, futex, getdents,
440 getdents64, getsockopt, io_*, mount, msgctl, prctl, quotactl, recvfrom,
441 sendfile, setsockopt, and shmctl syscalls.
442 * Implemented decoding of bpf, execveat, ioperm, iopl, kcmp, kexec_file_load,
443 lookup_dcookie, membarrier, memfd_create, mlock2, name_to_handle_at,
444 open_by_handle_at, sched_getattr, sched_setattr, and userfaultfd syscalls.
445 * Updated lists of AF_*, EPOLL_*, FALLOC_FL_*, F_*, INPUT_PROP_*, IPPROTO_*,
446 IPV6_*, IP_*, KEY_*, LOCK_*, MNT_*, MS_*, PACKET_*, PERF_FLAG_*, PF_*,
447 PR_*, PTRACE_O_*, RENAME_*, SCTP_*, SECBIT_*, SO_*, TCP_*, and siginfo_t
449 * Added Nios II architecture support.
450 * Added new syscall entries to match Linux 4.4.
453 * Fixed potential short read of strings from tracee's memory.
454 * Fixed -qq option in conjunction with -o option.
455 * Fixed filtering of <unavailable> syscalls.
456 * Fixed decoding of ioctl syscall command on aarch64 and 32-bit architectures
457 with 64-bit aligned structures.
458 * Fixed decoding of eventfd2, epoll_create1, signalfd4, and sync_file_range2
459 syscall flags arguments.
460 * Fixed decoding of 4th argument of clock_nanosleep syscall.
461 * Fixed decoding of getpagesize syscall on m68k.
462 * Fixed decoding of getrandom and seccomp syscalls on aarch64.
463 * Fixed decoding of timezone argument of gettimeofday and settimeofday
465 * Fixed decoding of offset argument of mmap2 syscall on arm, sparc,
467 * Fixed decoding of pipe syscall on alpha and mips.
468 * Fixed decoding of pipe2 syscall on ia64, sh, sparc, and sparc64.
469 * Fixed decoding of signal mask argument of pselect6 syscall on x32.
470 * Fixed decoding of signal mask of rt_sigreturn syscall on aarch64, m68k,
472 * Fixed decoding of 4th argument of semctl indirect syscall.
473 * Fixed decoding of sa_restorer and sa_mask of sigaction syscall on m68k.
474 * Fixed decoding of statfs64 and fstatfs64 syscalls on arm eabi.
475 * Fixed decoding of struct dirent on x32.
476 * Fixed decoding of times syscall return value on mips n32 and x32.
477 * Fixed decoding of path argument of umount2 syscall
478 (addresses Debian bug #785050).
479 * Worked around a kernel bug in tracing privileged executables.
480 * Fixed various errors in mapping between syscall numbers and associated
481 information like the number of syscall arguments, the name of syscall,
484 Noteworthy changes in release 4.10 (2015-03-06)
485 ===============================================
488 * Added -yy option to print protocol and address information associated with
490 * Extended "-e read=set" and "-e write=set" options to cover sendmsg,
491 recvmsg, sendmmsg, and recvmmsg syscalls.
492 * Implemented full 32-bit decoding of ioctl commands
493 (addresses Debian bug #692913 and Fedora bug #902788).
494 * Implemented PTRACE_GETREGS API support on ia64.
495 * Implemented PTRACE_GETREGS API support on mips.
496 * Implemented PTRACE_GETREGSET API support on s390/s390x.
497 * Implemented decoding of getrandom and seccomp syscalls.
498 * Implemented full decoding of 64-bit capability sets.
499 * Implemented decoding of all prctl commands.
500 * Implemented decoding of parametrized ioctl commands.
501 * Implemented decoding of evdev ioctl commands.
502 * Implemented decoding of v4l ioctl commands.
503 * Implemented decoding of SG_IO v4 ioctl commands.
504 * Implemented decoding of FIFREEZE/FITHAW/FITRIM ioctl commands.
505 * Implemented decoding of FALLOC_FL_* fallocate flags.
506 * Implemented decoding of rt_sigreturn signal mask on aarch64,
508 * Enhanced socket decoder to support bluetooth sockets.
509 * Enhanced decoding of unlisted ioctl commands.
510 * Enhanced decoding of getsockopt and setsockopt syscall.
511 * Enhanced decoding of sysinfo syscall.
512 * Enhanced decoding of struct cmsghdr.
513 * Enhanced decoding of wait status.
514 * Enhanced aio support on non-x86 architectures by using external libaio.h.
515 * Added O_TMPFILE to the list of recognized open mode flags.
516 * Updated the list of filesystem type constants that is used in decoding
517 statfs family syscalls.
518 * Updated lists of CAP_*, PR_*, PTRACE_*, SCHED_*, SO_*, SOL_*, SWAP_FLAG_*,
520 * Updated lists of signal constants from Linux 3.19.
521 * Updated lists of errno constants from Linux 3.19.
522 * Updated lists of ioctl commands from Linux 3.9.
523 * Added new syscall entries to match Linux 3.19.
526 * Fixed various errors in mapping between syscall numbers and associated
527 information like the number of syscall arguments, the name of syscall,
529 * Fixed quoting issues in printing descriptors, filenames, network interface
530 names, struct utsname members, device/volume names of BLK* ioctl commands.
531 * Fixed uid_t/git_t decoding.
532 * Fixed potential out-of-bounds read issues in getdents/getdents64 decoders.
533 * Fixed potential open flags truncation on some architectures.
534 * Fixed decoding of struct ifreq.ifr_name.
535 * Fixed decoding of SIOCSIFNAME ioctl command.
536 * Fixed decoding of RENAME_* renameat2 flags.
537 * Fixed decoding of UTIME_NOW/UTIME_OMIT timeval structures.
538 * Fixed decoding of indirect ipc subcalls on some architectures.
539 * Fixed decoding of fanotify_mark syscall on 32-bit architectures.
540 * Fixed decoding of 32-bit stat structures on 64-bit architectures.
541 * Fixed decoding of 32-bit struct cmsghdr on 64-bit architectures.
542 * Fixed decoding of 32-bit preadv/pwritev offset on 64-bit architectures.
543 * Fixed decoding of sigreturn/rt_sigreturn signal mask on ia64, ppc, ppc64,
544 sparc, sparc64, mips, and s390.
545 * Fixed instruction pointer output (-i option) on architectures that support
546 several personalities.
547 * Fixed behaviour of "-e read=set" and "-e write=set" when read and write
549 * Fixed build on systems where struct sigaction has no sa_restorer member.
550 * Fixed build with uclibc and musl libc.
553 * Linux kernel >= 2.5.46 is required.
554 Older versions without a decent PTRACE_SETOPTIONS support will not work.
555 * On mips, linux kernel >= 2.6.15 is required.
556 Older versions without a decent PTRACE_GETREGS support will not work.
557 * On s390 and s390x, linux kernel >= 2.6.27 is required.
558 Older versions without a decent PTRACE_GETREGSET support will not work.
560 Noteworthy changes in release 4.9 (2014-08-15)
561 ==============================================
563 * Changes in behavior
564 * Disabled OABI support on ARM EABI systems by default,
565 added --enable-arm-oabi option to enable it at configure time.
568 * Added experimental -k option to print stack trace after each traced syscall.
569 * Added -w option to produce stats on syscall latency.
570 (addresses Debian bug #457497).
571 * Added ARC architecture support.
572 * Added PTRACE_GETREGS API support on PowerPC.
573 * Enhanced Bionic libc and musl libc support.
574 * Enhanced tracing of x86 personality processes on x86_64 and x32.
575 * Enhanced tracing of ARM personality processes on AArch64.
576 * Enhanced 32/64bit personality detection on PowerPC.
577 * Implemented decoding of add_key, ioprio_get, ioprio_set, kexec_load, keyctl,
578 renameat2, and request_key syscalls.
579 * Robustified decoding of select, pselect, and io_submit syscalls.
580 * Enhanced decoding of delete_module, fanotify_init, fanotify_mark, fcntl,
581 setdomainname, sethostname, setns, and sync_file_range syscalls.
582 * Enhanced decoding of signal bitmasks.
583 * Enhanced decoding of file descriptors.
584 * Enhanced siginfo_t decoding.
585 * Enhanced PF_NETLINK decoding.
586 * Updated CLOCK_* constants
587 (addresses Fedora bug #1088455).
588 * Added new syscall entries to match Linux 3.16.
591 * Added shmat and shmdt to the set of memory mapping related syscalls.
592 * Fixed detaching from stopped processes.
593 * Fixed fanotify_mark decoding on 32bit architectures.
594 * Fixed offset decoding in preadv and pwritev syscalls.
595 * Fixed select decoding for glibc in _FORTIFY_SOURCE mode.
596 * Fixed decoding of epoll_ctl syscall with EPOLL_CTL_DEL argument.
597 * Fixed build when <sys/ptrace.h> and <linux/ptrace.h> conflict
598 (addresses Fedora bug #993384).
599 * Miscellaneous corrections in the manual page.
600 (Addresses Debian bug #725987).
602 Noteworthy changes in release 4.8 (2013-06-03)
603 ==============================================
605 * Changes in behavior
606 * In case of normal strace termination, when the trace output is
607 redirected to a pipe, strace now closes it and waits for the pipe
608 process termination before exit.
611 * Implemented tracing using PTRACE_SEIZE API (when available).
612 * Implemented more reliable PTRACE_GETREGSET-based process personality
613 detection on x86-64 and x32 (when available).
614 * Added -e trace=memory option for tracing memory mapping related syscalls.
615 * Documented -b option.
616 * Allowed exit status messages to be suppressed by giving -q option twice.
617 * Added AArch64 architecture support
618 (addresses Debian bug #693074 and Fedora bug #969858).
619 * Added support for OpenRISC 1000, Meta, and Xtensa architectures.
620 * Added tilegx personality support for Tile.
621 * Enhanced support of NOMMU architectures.
622 * Enhanced decoding of getdents, mmap, perf_event_open, ptrace, and
624 * Added new syscall entries to match Linux 3.9.
625 * Regenerated the list of common ioctl names from Linux 3.9.
626 * Updated the list of errno constants.
627 * Updated lists of AF_*, MADV_*, MAP_*, MSG_*, MS_*, PF_*, PR_*,
628 PTRACE_O_*, and TCP_* constants.
629 * Implemented decoding of UBI ioctls.
630 * Removed redundant "*32" ioctl names.
633 * Fixed ERESTARTNOINTR leaking to userspace on ancient kernels
634 (addresses Fedora bug #659382).
635 * Fixed kernel release string parsing
636 (addresses Debian bug #702309).
637 * Fixed decoding of *xattr syscalls
638 (addresses Fedora bug #885233).
639 * Fixed handling of files with 64-bit inode numbers by 32-bit strace
640 (addresses Fedora bug #912790).
641 * Fixed tracing forks on SPARC.
642 * Fixed decoding of fadvise64, fallocate, ftruncate64, io_submit, pread,
643 preadv, pwrite, pwritev, readahead, sigaltstack, sync_file_range, sysctl,
644 and truncate64 syscalls.
645 * Fixed categories of multiple syscalls on most of supported architectures.
646 * Fixed decoding of non-native 32-bit personality recv[m]msg syscalls.
647 * Fixed decoding of multiple 32-bit personality syscalls on x32.
648 * Fixed decoding of long long syscall arguments on ARM, MIPS/o32, PowerPC,
649 S390x, and Tile architectures.
650 * Fixed semtimedop decoding on S390x.
651 * Fixed sram_alloc decoding on Blackfin.
652 * Fixed build when process_vm_readv is a stab.
653 * Fixed build with older versions of libaio.h.
655 Noteworthy changes in release 4.7 (2012-05-02)
656 ==============================================
658 * Changes in behavior
659 * strace no longer suspends waitpid until there is a child
660 for waitpid'ing process to collect status from.
661 * strace no longer detaches from a tracee which is supposed
663 * strace now issues a new message: "+++ exited with EXITCODE +++"
664 which shows exact moment strace got exit notification,
665 analogous to existing "+++ killed by SIG +++" message.
668 * Added x32 personality support (x86_64 architecture).
669 * Added -y and -P options to print file descriptor paths and
670 filter by those paths.
671 * Added -I option to control strace interactivity.
672 * Allowed -p option to take comma or whitespace-separated list of PIDs.
673 * Added strace_log_merge script helper to merge timestamped "strace -ff"
675 * Implemented decoding of clock_adjtime, get_robust_list, migrate_pages,
676 preadv, prlimit64, process_vm_readv, process_vm_writev, pwritev,
677 recvmmsg, recvmsg, rt_tgsigqueueinfo, sendmmsg, setns, set_robust_list,
678 sched_rr_get_interval, splice, syslog, tee and vmsplice syscalls.
679 * Enhanced decoding of capget, capset, getrlimit, flistxattr, io_submit,
680 listxattr, setrlimit and swapon syscalls.
681 * Implemented decoding of loop and mtd ioctls.
682 * Added syscall entries for new linux syscalls.
683 * Added syscall entries for direct socket system calls on powerpc.
684 * Updated the list of errno constants.
685 * Updated lists of MSG_*, STA_*, and TCP_* constants.
686 * Regenerated the list of ioctl names from Linux 3.3.
687 * Enhanced switching between processes with different personalities.
688 * Enhanced signals reporting by using short signal names.
689 * Made ERESTART* messages more descriptive.
690 * Made parsing of numbers from strings more robust.
691 * Added support for compat_statfs64 and statfs64.f_flags.
692 * Changed read of data blocks to use single process_vm_readv syscall
693 (when available) instead of several PTRACE_PEEKDATA operations.
694 * Changed read of registers on x86 and x86-64 to use single PTRACE_GETREGS
695 operation instead of several PTRACE_PEEKUSER operations.
696 * Applied various optimizations to make strace work faster.
699 * Implemented proper handling of real SIGTRAPs on kernels supporting
700 PTRACE_O_TRACESYSGOOD.
701 (Addresses Fedora bug #162774).
702 * Fixed sockaddr_un.sun_path name in decoded output.
703 (Addresses Debian bug #554946).
704 * Fixed to avoid potential core file clobbering on exit.
705 (Addresses Debian bug #656398).
706 * Fixed a typo in documentation.
707 (Addresses Debian bug #653309).
708 * Fixed decoding of timer id returned by timer_create.
709 * Fixed epoll_create1, epoll_wait and epoll_pwait decoding.
710 * Fixed *at syscalls flags decoding.
711 * Fixed ARM EABI 64-bit syscall's arguments decoding.
712 * Fixed semtimedop decoding on s390.
713 * Fixed osf_sigprocmask decoding on alpha.
714 * Fixed ipc and socket subcall decoding on several architectures.
715 * Corrected syscall entries for epoll_pwait, epoll_create, epoll_ctl,
716 epoll_wait, mincore, mlockall, prctl, reboot, sendfile, sendfile64,
717 sendmsg, sgetmask, ssetmask, swapon, tgkill and tkill syscalls.
718 * Corrected io_* syscall entries on ARM.
719 * Fixed PID prefix printing in "strace -oLOG -ff -p1 -p2 -p3" case.
720 * Fixed logging of unfinished lines in "strace -oLOG -ff" case.
721 * Fixed build when libaio-devel is not available.
722 * Fixed configure checks for PTRACE_* constants.
723 * Fixed compilation warnings remained on several architectures.
726 * Removed all non-Linux code. After years of neglect, that dead code
727 just hampered further strace development.
728 * Linux kernel >= 2.6.18 is recommended. Older versions might still
729 work but they haven't been thoroughly tested with this release.
731 Noteworthy changes in release 4.6 (2011-03-15)
732 ==============================================
734 * Changes in behavior
735 * Print diagnostic information about changes in personality mode to
736 standard error instead of standard output.
739 * Implemented a new method of following clone, fork, and vfork
740 syscalls using the Linux kernel's explicit facilities for tracing
741 creation of threads and child processes.
742 * Implemented CLONE_PARENT and CLONE_UNTRACED flags handling.
743 * Implemented decoding of TLS syscalls on m68k.
744 * Implemented biarch support on powerpc64.
745 * Implemented biarch support for getrlimit() and setrlimit().
746 * Implemented decoding of struct ucred in getsockopt SO_PEERCRED.
747 * Implemented SOL_SCTP socket options decoding.
748 * Added HDIO_* ioctl names.
749 (Addresses Debian bug #450953).
750 * Added LOOP_* ioctl names.
751 * Updated lists of CLOCK_*, CLONE_*, MS_*, and SOL_* constants
752 to match Linux 2.6.37.
753 * Updated the list of IPPROTO_* constants to match netinet/in.h.
754 * Implemented decoding of HDIO_* and BLK* ioctls.
755 * Added MicroBlaze architecture support.
756 * Added new syscall entries to match Linux 2.6.37.
757 * Regenerated list of ioctl names from Linux 2.6.37.
758 * Enhanced signal notification decoding.
759 * Documented -C and -D options.
762 * Fixed fetching syscall arguments on m68k.
763 * Fixed an error when judging whether a process has children.
764 * Fixed get/set_robust_list syscall numbers for powerpc.
765 * Fixed a corner case in printing clone flags.
766 * Fixed cross-compiling issues.
767 * Fixed build issues on powerpc64, SH and SPARC.
768 * Fixed syscall flags of fstatat*, mmap, mmap2, fadvise64*, swapoff,
769 fgetxattr, flistxattr, fremovexattr, epoll_create, fallocate,
770 fanotify_init, and fanotify_mark syscalls.
771 * Fixed decoding of get[ug]id, gete[ug]id and setfs[ug]id return values.
772 * Fixed biarch support in IO dumping.
773 * Fixed raw exit_group decoding.
774 * Fixed decoding of file descriptors on 64-bit architectures.
775 * Fixed a corner case in waitpid handling.
776 (Addresses Red Hat bug #663547).
777 * Fixed stat64 decoding on mips
778 (Addresses Debian bug #599028).
779 * Fixed misleading italics in the manual page.
780 (Addresses Debian bug #589323).
782 Noteworthy changes in release 4.5.20 (2010-04-13)
783 =================================================
786 * Implemented decoding of new linux syscalls: inotify_init1, recvmmsg.
787 * Implemented basic decoding of new linux syscalls: preadv, pwritev,
788 rt_tgsigqueueinfo, perf_event_open.
789 * Enhanced decoding of recently added syscalls on non-x86 architectures
790 by replacing a bare decoder with elaborate parsers enabled earlier
792 * Implemented -C option to combine regular and -c output.
793 (Addresses Debian bug #466196)
794 * Enhanced decoding of mbind and mremap syscalls.
795 * Enhanced SOL_PACKET socket options decoding.
796 * Regenerated list of ioctl names from linux 2.6.33.
797 * Added TILE architecture support.
800 * Fixed build with Linux kernel headers 2.6.32-rc5+.
801 (Addresses Debian bug #560516 and Fedora bug #539044)
802 * Fixed build on mips.
803 * Fixed handling of Linux systems without struct statfs64.
804 * Fixed reporting signal mask by sigreturn on powerpc.
805 * Fixed potential stack buffer overflow in select decoder.
806 (Addresses Fedora bug #556678)
807 * Corrected msgsnd indirect ipccall decoding.
808 * Corrected decoding of 64bit syscalls.
809 (Addresses Debian bug #570603)
810 * Corrected getsockopt decoding on architectures where
811 sizeof(long) > sizeof(int).
812 (Addresses Debian bug #494844)
813 * Corrected decoding of epoll_pwait.
814 (Addresses Debian bug #513014)
815 * Corrected handling of killed threads.
817 Noteworthy changes in release 4.5.19 (2009-10-21)
818 =================================================
820 * Changes in behavior
821 * When command exits, strace now exits with the same exit status.
822 If command is terminated by a signal, strace terminates itself
823 with the same signal, so that strace can be used as a wrapper
824 process transparent to the invoking parent process.
825 When using -p option, the exit status of strace is zero unless
826 there was an unexpected error in doing the tracing.
827 (Addresses Fedora bug #105371 and Debian bug #37665)
830 * Implemented decoding of new Linux syscalls: accept4, dup3,
831 epoll_create1, eventfd2, inotify_init1, pipe2, signalfd4.
832 * Implemented decoding of socket type flags introduced in Linux 2.6.27.
833 * Implemented decoding of accept4 socketcall.
834 * Enhanced prctl decoding.
835 * Enhanced nanosleep decoding.
836 * Enhanced ptrace decoding.
837 * Enhanced futex decoding.
838 * Enhanced CAP_* decoding.
839 * Enhanced SIOCS* ioctls decoding.
840 * Enhanced fcntl F_* flags decoding.
841 * Enhanced semop/semtimedop decoding.
842 * Updated ARM architecture support.
843 * Added Blackfin architecture support.
844 * Added AVR32 architecture support.
845 * Added CRIS architecture support.
846 * Made strace detect when traced process suddenly disappeared.
849 * Fixed syscall numbers for tee and sync_file_range.
850 (Addresses Debian bug #503124)
851 * Fixed several bugs in strings decoder, including potential heap
853 (Addresses Fedora bugs #470529, #478324 and #511035)
854 * Marked sendfile(2) as a network syscall.
855 (Addresses Debian bug #509499)
856 * Fixed accept(2) decoding.
857 (Addresses Debian bug #507573)
858 * Fixed sigtimedwait(2) decoding.
859 * Fixed build on ARM EABI.
860 (Addresses Debian bugs #520084 and #535564, and Fedora bug #507576)
861 * Fixed display of 32-bit fcntl(F_SETLK) on 64-bit architectures.
862 (Addresses Red Hat bug #471169)
863 * Fixed display of 32-bit argv array on 64-bit architectures.
864 (Addresses Fedora bug #519480)
865 * Fixed display of 32-bit struct sigaction on 64-bit architectures.
866 * Fixed HPPA architecture support.
867 (Addresses Debian bugs #437928 and #546619)
872 * Support new Linux/PPC system call subpage_prot and PROT_SAO flag.
873 * In sigaction system call, display sa_flags value along with SIG_DFL/SIG_IGN.
878 * -F is now deprecated, -f has traced vfork too on Linux for a long time now.
879 * Print O_CLOEXEC, MSG_CMSG_CLOEXEC flag bits.
880 * Improved output for prctl system call on Linux.
881 * Improved support for Linux/ARM.
882 * SA_NOMASK is now spelled SA_NODEFER, and SA_ONESHOT is spelled SA_RESETHAND.
887 * Improved output for delete_module, futex, and mbind system calls on Linux.
888 * Improved output for SG_IO ioctls on Linux.
889 * Support new Linux system calls move_pages, utimensat, signalfd, timerfd,
890 eventfd, getcpu, epoll_pwait.
895 * Several biarch improvements.
896 * Improved output for adjtimex, sysctl, quotactl, mount, umount.
897 * Support new Linux system calls *at, inotify*, pselect6, ppoll and unshare.
902 * Accept numeric system calls in -e.
907 * Introduce "-e trace=desc".
912 * Better x86-64 support for IA32 processes.
913 * Update PowerPC system calls.
914 * Better printing for Linux aio system calls.
918 * Quick fix release for build issues.
919 * One fix for Linux/ARM system call table.
924 * Print fault address for SIGSEGV/SIGBUS signals when available.
929 * Improve socket ioctl printing.
930 * Update Linux/IA64 syscall list.
931 * Fix Linux/x86-64 syscall argument extraction for 32-bit processes.
932 * Improve mount flags printing.
933 * Support symbolic printing of x86_64 arch_prctl parameters.
938 * Update syscall tables for Alpha, ARM, HPPA.
939 * Support new Linux syscalls mbind, set_mempolicy, get_mempolicy, waitid.
940 * Support Linux syscalls fadvise64, fadvise64_64, and epoll_*.
941 * Improve ioctl command name matching.
942 * Print RTC_* ioctl structure contents.
943 * Support newer RLIMIT_* values.
944 * Print struct cmsghdr details in sendmsg.
949 * Print attribute values in *xattr system calls on Linux.
950 * Include pread and pwrite calls in -e read and -e write tracing.
951 * Update SO_* and IP_* value lists and add IPV6_* values for socket options.
952 * Print clock_t values symbolically in Linux clock_* system calls.
956 * Bug fixes, Linux ioctl updates.
957 * David Miller contributed support for Linux/SPARC64.
965 * Update Linux ioctl lists.
966 * Update PF_* and AF_* value lists.
967 * The 4.5.3 -p behavior for NPTL threads applies only under -f, and got fixed.
972 * On Linux using NPTL threads, -p will now attach to all threads in a process.
973 * Handle new mq_* system calls in Linux 2.6.6 and later.
978 * Report some new VM_* bit values on Linux.
979 * Better output for Linux sched_* system calls.
984 * Display multiple ioctl name matches on Linux.
988 * New port to AMD's x86-64 architecture. One strace binary can
989 handle both new x86-64 and old i386 processes.
990 * Fixed support for LFS64 calls.
991 * New switch -E to add/remove environment variables for the command.
992 * Merged s390/s390x port.
993 * Trace an unbounded number of processes.
994 * Handle numerous new system calls in Linux 2.5, and new threads semantics.
995 * Fixed bugs with attach/detach leaving things stopped.
996 * Fixed traced process seeing ECHILD despite live, traced children
997 in waitpid calls with WNOHANG.
998 * Stuart Menefy contributed a port to Linux/SH.
999 * Stephen Thomas contributed a port to Linux/SH64.
1000 * Many other bug fixes.
1004 * Fix Linux/ia64 support, looks like someone renamed a few things on us
1005 * Fix the ioctl setup for Linux, turned out it did not really work.
1006 Improve the ioctl extractor as well so we decode some more ones.
1010 * compile fixes for Linux/mips
1014 * Linux ia64 and hppa ports added
1015 * The usual Linux syscall updates (includes 32bit uid/gid support),
1016 * Linux ioctl list updated
1017 * Support IPv6 scope ids
1018 * FreeBSD/i386 port added
1019 * UnixWare and Solaris updates
1020 * Better support for tracing multithreaded processes in Linux
1024 * Compiles on glibc2.0 systems again
1025 * Linux/S390 port added
1026 * The usual Linux syscall updates
1027 * we can follow fork on arm now
1031 * Linux/MIPS port added
1032 * Lots of Linux updates again
1033 * Improved IPv6 support
1039 * Compiles on glibc2.0 systems again
1043 * Get stat structure properly on Linux 64bit archs
1044 * Personalities work again
1045 * Compile correctly on SunOS again
1051 * Linux (ultra)sparc fixes
1058 * add support for more Linux architectures (powerpc, sparc, arm)
1059 * support lots more Linux syscalls
1060 * fix signal handling
1061 * add IPX and IPIP support
1062 * check stray syscall after execv
1063 * fix hanging children
1065 Changes in version 3.1
1066 ======================
1068 * Irix5 is supported
1069 * Linux 68k is supported
1070 * Linux alpha is supported
1071 * configure is upgraded to autoconf 2.x
1072 * using -f in combination with -e now works correctly
1073 * output can be piped to a program
1074 * tracing setuid programs works better
1075 * it is now reasonable to install strace setuid to root in some circumstances
1076 * new useful tracing names like file and process to trace whole
1077 classes of system calls, e.g. -efile traces all system calls that
1078 take a file name as an argument
1079 * IPC calls on SunOS 4.1.x are decoded
1080 * Linux program memory is reliably dereferenced
1081 * Linux decodes at least the name of all syscalls as of pre2.0.4
1082 * various cosmetic changes and bug fixes
1084 Changes from versions 2.x to version 3.0
1085 ========================================
1087 * filename arguments are neither abbreviated nor stringified
1088 * string arguments are now true C strings using octal instead of hex by default
1089 * preprocessor constants are never shortened (e.g. was RDONLY => now O_RDONLY)
1090 * by default the output for multiple processes now goes into one file
1091 * all structures, vectors, bitsets, etc. use consistent output formats
1092 * the -c option now means count calls, -i does what the old -c used to do
1094 New Features in version 3.0
1095 ===========================
1097 * non-ascii strings can be optionally printed entirely in hex
1098 * the output format is readable when multiple processes are generating output
1099 * exit values are printed in an alignment column
1100 * is is possible to suppress messages about attaching and detaching
1101 * various tracing features can be enabled on a per syscall/signal/desc basis
1102 * selective tracing of syscalls
1103 * selective printing of syscall structures
1104 * selective abbreviation of long structures on a per syscall basis
1105 * selective printing of raw syscall arguments and results
1106 * selective tracing of signals
1107 * selective dumping of all I/O read from file descriptors
1108 * selective dumping of all I/O written to file descriptors
1109 * optional counting of time, calls, and errors for each syscall
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