1 Noteworthy changes in release ?.?? (????-??-??)
2 ===============================================
5 * Implemented decoding of kvm vcpu exit reason (-e kvm=vcpu option),
6 requires Linux kernel version 4.16.0 or higher.
7 * Implemented decoding of KVM_SET_CPUID2 and KVM_GET_*_CPUID ioctl commands.
9 Noteworthy changes in release 4.23 (2018-06-14)
10 ===============================================
12 * Changes in behaviour
13 * On x32 personality, 64-bit syscalls (such as readv) are now shown with "#64"
14 suffix instead of "64:" prefix. Unlike the old names, these new names
15 can be used in syscall qualification expressions.
16 * Changed error number output format: error numbers are consistently
17 printed as "-1 ECONST (Error description)"
18 for known errors and as "-1 (errno 123)" for unknown errors,
19 regardless of -e raw qualification settings. One can specify
20 -X raw for displaying raw error numbers unconditionally.
21 * Unfetchable addresses inside arrays are now printed as comments.
22 * Obsolete IA-32 mode syscall names are no longer printed on ia64.
25 * Implemented libdw backend for -k option, configured at build time
26 using --with-libdw option.
27 Whether -k option is compiled is now configured at build time
28 using --enable-stacktrace option.
29 * Added -X option for configuring xlat output formatting (addresses
31 * Added support for personality designation ("64", "32", or "x32") to syscall
32 qualifications in -e trace expressions.
33 * Implemented injection of syscalls with no side effects as an alternative
34 to injection of an invalid syscall (-e inject=SET:syscall= expression).
35 * Improved support for reproducible builds (addresses Debian bug #896016).
36 * Implemented decoding of BPF_PROG_QUERY and BPF_RAW_TRACEPOINT_OPEN bpf
38 * Implemented decoding of INOTIFY_IOC_SETNEXTWD and PERF_EVENT_IOC_* ioctl
40 * Implemented decoding of PR_GET_SPECULATION_CTRL and PR_SET_SPECULATION_CTRL
41 prctl syscall options.
42 * Enhanced decoding of bpf, getsockopt, setsockopt, and socket syscalls.
43 * Enhanced decoding of NETLINK_KOBJECT_UEVENT and NETLINK_ROUTE protocols.
44 * Enhanced decoding of *_DIAG_MEMINFO netlink attributes.
45 * Enhanced decoding of BTRFS_*, FS_IOC_*, SIOCGIFHWADDR, and SIOCSIFHWADDR
47 * Enhanced decoding of AF_BLUETOOTH socket addresses.
48 * Implemented decoding of io_pgetevent syscall.
49 * Wired up rseq syscall.
50 * Updated lists of ADJ_*, BPF_*, BPF_F_*, BPF_PROG_TYPE_*, ETH_P_*, FPE_*,
51 IFF_*, IPPROTO_*, MAP_*, MS_*, MSG_*, NETLINK_*, PACKET_*, PROT_*, SCTP_*,
52 SECCOMP_FILTER_FLAG_*, SEGV_*, SEM_*, SHM_*, SW_*, V4L2_CID_*,
53 V4L2_CTRL_CLASS_*, and V4L2_PIX_FMT_* constants.
54 * Updated lists of ioctl commands from Linux 4.17.
57 * Fixed decoding of msgtyp argument of msgrcv syscall.
58 * Fixed fallback definitions for F_*, MCL_*, MSG_ZEROCOPY, SI_*,
59 and SOL_SOCKET constants.
60 * Fixed -e trace=%pure expression on mips.
62 Noteworthy changes in release 4.22 (2018-04-05)
63 ===============================================
65 * Changes in infrastructure
66 * The mailing list was moved to strace-devel@lists.strace.io.
67 * SourceForge git repository
68 (https://sourceforge.net/p/strace/code/ci/master/tree/) is no longer
69 maintained. Please use GitLab (https://gitlab.com/strace/strace/)
70 or GitHub (https://github.com/strace/strace/) repository instead.
72 * Changes in behaviour
73 * When printing string data, '8' and '9' following an octal escape sequence
74 no longer lead to unabbreviated octal escape sequence output, as they used
76 * Angle brackets are now printed as octal number escape sequences
77 in the output of paths associated with file descriptors.
78 * Data dump for write syscalls (-e write) is performed regardless
79 of successfulness of these syscall (addresses Debian bug #436284).
80 * -r and -t options are now affect output independently. Previously,
81 -r option led to ignoring of the -t option (addresses Debian bug #466195).
84 * Implemented delay injection (-e inject=SET:delay_enter= and
85 -e inject=SET:delay_exit= options).
86 * Added -A option for opening output files in append mode
87 (addresses Debian bug #528488).
88 * IPv6 addresses shown in socket information in -yy mode are now printed
90 * Enhanced decoding of bpf, prctl and ptrace syscalls.
91 * Enhanced decoding of BTRFS_IOC_INO_PATHS, BTRFS_IOC_LOGICAL_INO, and PTP_*
93 * Enhanced NETLINK_ROUTE protocol decoding.
94 * Updated lists of signal codes.
95 * Updated lists of BPF_*, BTN_*, ETH_P_*, INET_DIAG_BC_*, KEY_*, POLL*, RWF_*,
96 SCHED_FLAG_*, SCTP_* and error constants.
97 * Implemented block/character device number printing in -yy mode.
98 * Known pixel/SDR format names are printed as comments for pixelformat fields
100 * Enhanced decoding of kern_features syscall.
101 * Enhanced NETLINK_NETFILTER netlink protocol decoder.
102 * Optimized handling of large number of tracees.
103 * Improved wall clock time measurement in syscall count statistics
105 * Extended the range of allowed values in -e inject=...:retval= expression.
106 * Added i18n support.
107 * Updated lists of ioctl commands from Linux 4.16.
108 * Enhanced manual page.
111 * Fixed build on m68k.
112 * Fixed v4l2 pixelformat decoding on big-endian architectures.
115 Noteworthy changes in release 4.21 (2018-02-13)
116 ===============================================
118 * Changes in behaviour
119 * Warning is now issued when -F option is used.
120 * Warning is now issued when a tracee with unsupported personality
122 * Unknown syscall numbers are now printed in hexadecimal form.
125 * Implemented decoding of netlink descriptor attributes as file descriptors.
126 * Implemented decoding of hugetlb page size selection flags.
127 * Implemented decoding of BPF_PROG_TEST_RUN, BPF_PROG_GET_NEXT_ID,
128 BPF_MAP_GET_NEXT_ID, BPF_PROG_GET_FD_BY_ID, BPF_MAP_GET_FD_BY_ID,
129 and BPF_OBJ_GET_INFO_BY_FD commands of bpf syscall.
130 * Enhanced decoding of get_thread_area, memfd_create, modify_ldt,
131 perf_event_open, reboot, s390_guarded_storage, s390_pcio_mmio_read,
132 s390_pci_mmio_write, s390_runtime_instr, s390_sthyi, set_thread_area,
134 * Implemented decoding of KVM_* and DM_LIST_DEVICES ioctl commands.
135 * Implemented decoding of riscv_flush_icache syscall.
136 * Enhanced decoding of getsockopt and setsockopt syscalls for SOL_NETLINK
138 * Enhanced decoding of BPF_MAP_CREATE command of bpf syscall.
139 * Print values returned by mq_open syscall and first arguments
140 of mq_getsetattr, mq_notify, mq_timedreceive, and mq_timedsend syscalls
142 * Added decoding of get_tls syscall on arm.
143 * Added -e trace=%pure option for tracing system calls with no arguments that
145 * Updated lists of IPV6_*, MAP_*, MEMBARRIER_CMD_*, MSG_*, NT_*, PKEY_*,
146 SHM_*, and TCP_* constants.
147 * Added manual page for the strace-log-merge command.
148 * Updated lists of ioctl commands from Linux 4.15.
149 * Implemented biarch support for s390x.
150 * Implemented an optional support for symbol demangling in strace -k output
151 (activated by --with-libiberty configure option).
152 * Information about availability of demangling and reliable personality
153 decoding (on architectures with multiple personalities) is now available
155 * Added decoding of pkey_alloc, pkey_free, and pkey_mprotect syscalls on
156 powerpc and powerpc64.
157 * Enhanced manual page.
160 * Fixed multi-personality support in cross builds.
161 * Added mq_getsetattr, mq_notify, mq_open, mq_timedreceive, and mq_timedsend
162 syscalls to %desc tracing set.
163 * Fixed path tracing support for mmap syscalls with indirect arguments and
164 for old select syscall.
165 * Fixed decoding of arm-specific (__ARM_NR_*) syscalls.
166 * Fixed open mode flags decoding.
167 * Fixed corner cases in handling of strace -ff -ttt logs by strace-log-merge.
168 * Error counts that exceed one billion are now printed correctly in call
170 * Fixed call summary header for x32 personality.
171 * Changes of tracee personalities are reported more reliably.
172 * Fixed the case when strace attaches to a tracee being inside exec and its
173 first syscall stop is syscall-exit-stop instead of syscall-enter-stop,
174 which messed up all the syscall state tracking.
175 * Fixed printing of higher 32 bits of the return value for x32 personality.
178 * A C compiler that supports "for" loop initial declarations is now required.
179 * Inability to configure multiple personality support on architectures where
180 multiple personalities are supported leads to configuration failure during
181 build now. Use --enable-mpers=check to revert to the old behaviour.
182 * Build-time requirement for the mpers support has been lowered from gawk 4
184 * Removed incomplete and non-functional support for the CRIS architecture.
185 * Removed incomplete and unused support for IA-32 mode on the IA-64
188 Noteworthy changes in release 4.20 (2017-11-13)
189 ===============================================
192 * Implemented decoding of NETLINK_NETFILTER netlink message types and flags.
193 * Implemented decoding of SECCOMP_GET_ACTION_AVAIL operation of seccomp
195 * Updated lists of ARPHRD_*, BPF_*, ETH_P_*, LOOP_*, MADV_*,
196 MEMBARRIER_CMD_*, MFD_*, SECCOMP_*, SO_*, SOL_*, TCP_*, and UFFD_FEATURE_*
198 * Added decoding of statx syscall on hppa.
199 * Updated lists of ioctl commands from Linux 4.14.
202 * Fixed powerpc personality support on powerpc64.
204 Noteworthy changes in release 4.19 (2017-09-05)
205 ===============================================
207 * Changes in behaviour
208 * Changed formatting of personality names on tile architecture in order
209 to make it in line with other multi-personality architectures.
210 * Changed field output order in struct v4l2_requestbuffers to improve in/out
212 * Changed handling of multiple signal= specifications in an injection
213 expression: multiple specification now leads to error instead of implicit
214 usage the last specification.
217 * Enhanced decoding of optlen argument of getsockopt syscall.
218 * Enhanced decoding of SO_LINGER option of getsockopt and setsockopt syscalls.
219 * Enhanced decoding of SO_PEERCRED option of getsockopt syscall.
220 * Enhanced decoding of IP_ADD_MEMBERSHIP, IP_DROP_MEMBERSHIP,
221 IPV6_ADD_MEMBERSHIP, IPV6_DROP_MEMBERSHIP, IPV6_JOIN_ANYCAST,
222 IPV6_LEAVE_ANYCAST, MCAST_JOIN_GROUP, and MCAST_LEAVE_GROUP options
223 of setsockopt syscall.
224 * Enhanced decoding of KEYCTL_DH_COMPUTE operation of keyctl syscall
225 (KDF parameters decoding).
226 * Implemented decoding of KEYCTL_RESTRICT_KEYRING operation of keyctl syscall.
227 * Enhanced decoding of UFFDIO_API ioctl command.
228 * Enhanced decoding of BPF_PROG_LOAD, BPF_MAP_CREATE, BPF_MAP_LOOKUP_ELEM,
229 and BPF_MAP_GET_NEXT_KEY commands of bpf syscall.
230 * Implemented decoding of linux socket filter programs specified
231 for SO_ATTACH_FILTER and SO_ATTACH_REUSEPORT_CBPF socket options.
232 * Implemented decoding of inet_diag_req_v2, inet_diag_req_compat,
233 packet_diag_msg, and smc_diag_msg netlink attributes of NETLINK_SOCK_DIAG.
234 * Implemented NETLINK_SELINUX protocol specific decoding.
235 * Implemented decoding of netlink message ack flags.
236 * Implemented decoding of nlmsgerr netlink attributes.
237 * Implemented basic protocol specific decoding of NETLINK_CRYPTO.
238 * Implemented decoding of crypto_user_alg netlink attributes
240 * Implemented basic protocol specific decoding of addr, addrlabel, dcb, link,
241 mdb, neigh, neightbl, netconf, nsid, route, rule, tc, and tca messages
243 * Implemented decoding of NETLINK_KOBJECT_UEVENT messages.
244 * Improved handling of unexpected tracees (the ones that cloned with
245 CLONE_PARENT/CLONE_PTRACE or called PTRACE_TRACEME on themselves): they
246 are now PTRACE_DETACH'ed instead of PTRACE_CONT'ed.
247 * Updated lists of BPF_*, KEY_*, RWF_*, SCM_*, SO_*, and *_MAGIC constants.
248 * Added decoding of arch_prctl syscall on x86.
249 * Added decoding of seccomp, bpf, userfaultfd, membarrier, mlock2,
250 copy_file_range, preadv2, pwritev2, and statx on alpha.
251 * Added decoding of statx syscall on microblaze.
252 * Added decoding of s390_guarded_storage syscall on s390.
253 * Updated lists of ioctl commands from Linux 4.13.
254 * Enhanced manual page.
257 * Fixed printing of group_req structure on non-native personalities.
258 * Fixed output formatting of blkpg_ioctl_arg, dm_name_list, and iocb
260 * Fixed formatting of nul-terminated strings which have kernel-imposed size
262 * Fixed printing of paths that hit PATM_MAX limit in order to match kernel's
264 * Fixed build warnings on Android mips64.
265 * Fixed unused function "is_negated_errno" build warning when built
267 * Fixed syscall number and arguments retrieval behaviour on sparc64 and
268 mips o32 after prctl(PR_SET_DUMPABLE, 0) makes PTRACE_PEEKTEXT impossible
269 to use if Linux kernel has commit v4.10-rc1~114^2~2.
270 * Fixed path tracing for execveat, symlink, symlinkat, inotify_add_watch,
271 and inotify_init syscalls.
272 * Fixed personality switch printing on sparc64 and risc-v.
274 Noteworthy changes in release 4.18 (2017-07-05)
275 ===============================================
278 * Implemented decoding of SCM_TIMESTAMP* control messages.
279 * Implemented decoding of netlink NLMSG_DONE messages.
280 * Implemented decoding of netlink generic nlmsg_type and nlmsg_flags.
281 * Implemented decoding of NETLINK_AUDIT, NETLINK_NETFILTER, NETLINK_ROUTE,
282 NETLINK_SELINUX, NETLINK_SOCK_DIAG, and NETLINK_XFRM message types.
283 * Implemented decoding of NETLINK_GENERIC protocol families.
284 * Implemented basic protocol specific decoding of AF_INET, AF_INET6,
285 AF_NETLINK, AF_PACKET, AF_SMC, and AF_UNIX messages of NETLINK_SOCK_DIAG.
286 * Implemented basic decoding of netlink attributes.
287 * Implemented basic protocol specific decoding of AF_INET, AF_NETLINK,
288 AF_PACKET, AF_SMC, and AF_UNIX netlink attributes of NETLINK_SOCK_DIAG.
289 * Implemented decoding of inet_diag_msg, netlink_diag_msg, and unix_diag_msg
290 netlink attributes of NETLINK_SOCK_DIAG.
291 * Updated lists of ARPHRD_*, KEYCTL_*, NDIAG_SHOW_*, RTM_*, SCM_*, SCTP_*,
292 SO_*, V4L2_*, and prctl ARCH_* constants.
293 * Updated lists of ioctl commands from Linux 4.12.
296 * In interactive mode (-I2), those signals that were blocked at startup
297 will remain blocked for the whole period of strace execution.
298 * strace no longer resets SIGCHLD handler in tracees to the default action.
299 * When traced command is terminated by a blocked signal, strace unblocks
300 that signal to ensure its own termination with the same signal.
301 * Fixed corner cases in decoding of old sigaction syscall.
302 * Fixed build with old kernel headers on mips.
303 * Fixed build on aarch64 and tile with glibc >= 2.26.
304 * Fixed build on arc and nios2.
306 Noteworthy changes in release 4.17 (2017-05-24)
307 ===============================================
309 * Changes in command line syntax
310 * Syscall classes specified in -e trace= option now have % prefix (like
311 -e trace=%process). Old style class names without leading % are still
312 supported, but considered deprecated now.
315 * Optimized syscall filtering.
316 * Improved representation of timestamps.
317 * Enhanced decoding of sched_setattr syscall.
318 * Added -e trace=%stat option for tracing variants of stat syscall.
319 * Added -e trace=%lstat option for tracing variants of lstat syscall.
320 * Added -e trace=%fstat option for tracing variants of fstat and fstatat
322 * Added -e trace=%%stat option for tracing syscalls used for querying file
323 status information (stat, lstat, fstat, fstatat, statx, and their
325 * Added -e trace=%statfs option for tracing statfs, statfs64 and statvfs
327 * Added -e trace=%fstatfs option for tracing fstatfs, fstatfs64 and fstatvfs
329 * Added -e trace=%%statfs option for tracing syscalls used for querying file
330 system statistics information (statfs-like, fstatfs-like and ustat).
331 * Added -e trace=/regex option for filtering syscalls using regular
333 * Added support for prepending of question mark before syscall qualification
334 in -e trace expressions in order to suppress error in case no syscalls
335 matched the provided qualification.
336 * Implemented decoding of signal mask in rt_sigreturn syscall on alpha, arc,
337 arm, avr32, bfin, cris, hppa, m68k, metag, microblaze, mips, nios2, or1k,
338 powerpc, powerpc64, riscv, sh, sh64, sparc, sparc64, tile, x86, and xtensa
340 * Implemented decoding of statx syscall.
341 * Implemented decoding of NS_* ioctl commands.
342 * Implemented decoding of the remaining V4L2_BUF_TYPE_* types.
343 * Implemented decoding of VIDIOC_[SG]_TUNER ioctl commands.
344 * Implemented decoding of NLMSG_ERROR netlink messages.
345 * Improved decoding of BPF_PROG_ATTACH command of bpf syscall.
346 * Improved decoding of misplaced parts in DM_* ioctl commands.
347 * Updated lists of ioctl commands from Linux 4.11.
350 * Fixed decoding of flags argument of preadv2 and pwritev2 syscalls on x32.
351 * Fixed the number of arguments and tracing flags of alpha specific syscalls.
352 * Fixed decoding of old sigsuspend syscall on alpha, cris, mips, powerpc,
353 powerpc64, sh, sh64, sparc, and sparc64.
354 * Fixed decoding of sgetmask and ssetmask syscalls on 64-bit architectures.
355 * Fixed decoding of netlink messages received within struct msghdr.
356 * Worked around a bug in miscompiled aarch64 kernels leading to the 3rd
357 argument of sched_getattr syscall being not quite 32-bit.
358 * Fixed corner cases of printing inaccessible times argument of utimes
359 and futimesat syscalls.
361 Noteworthy changes in release 4.16 (2017-02-14)
362 ===============================================
365 * Implemented syscall return value injection (-e inject=SET:retval= option).
366 * Implemented signal injection (-e inject=SET:signal= option).
367 * Implemented decoding of SUID_DUMP_* constants in PR_[GS]ET_DUMPABLE.
368 * Implemented decoding of all SG_* ioctl commands.
369 * Implemented decoding of ustat syscall.
370 * Implemented decoding of BPF_OBJ_PIN, BPF_OBJ_GET, BPF_PROG_ATTACH,
371 and BPF_PROG_DETACH commands of bpf syscall.
372 * Enhanced decoding of sg_io_hdr and sg_io_v4 structures.
373 * Enhanced decoding of get_robust_list, getrandom, io_submit, set_robust_list
375 * Enhanced decoding of entities of kernel long type on x32 and mips n32 ABIs.
376 * Updated lists of IP_*, IPV6_*, and LOOP_* constants.
377 * Updated lists of ioctl commands from Linux 4.10.
378 * Added decoding of recently added syscalls on avr32, microblaze, ppc,
382 * Fixed pathmatch of oldselect syscall on 64-bit architectures.
383 * Fixed decoding of mmap2 syscall on s390 when arguments are not available.
384 * Fixed decoding of kexec_file_load, mprotect, pkey_mprotect, prctl, preadv*,
385 and pwritev* syscalls on x32.
386 * Fixed printing of string arguments of getxattr and setxattr syscalls
387 when -s option is used to limit the printed string size.
388 * Fixed decoding of ifconf, ifreq, and loop_info structures on non-native
390 * Fixed decoding of SG_* and LOOP_* ioctl commands.
391 * Fixed build on mips with musl libc.
392 * Fixed cross-building of ioctlsort.
393 * Applied minor formatting fixes to the manual page.
395 Noteworthy changes in release 4.15 (2016-12-14)
396 ===============================================
398 * Changes in behavior
399 * Time stamps are now printed according to ISO 8601.
400 * Changed output format of val3 parameter of futex FUTEX_WAKE_OP operation.
401 * The last argument of mincore, sched_getaffinity, and sched_setaffinity
402 syscalls is now formatted as an array.
405 * Implemented syscall fault injection (-e fault=... option).
406 * Implemented decoding of DM_* ioctl commands.
407 * Implemented decoding of attr parameter of perf_event_open syscall.
408 * Implemented decoding of pkey_alloc, pkey_free, and pkey_mprotect syscalls.
409 * Implemented dumping of mq_timedsend and mq_timedreceive syscalls.
410 * Implemented decoding of PR_SET_FP_MODE and PR_GET_FP_MODE operations
412 * Implemented PTRACE_GETREGS API support on m68k.
413 * Updated lists of ARCH_*, BPF_*, BTRFS_*, FALLOC_*, MS_*, *_MAGIC,
414 and V4L2_* constants.
415 * Updated lists of ioctl commands from Linux 4.9.
416 * Added decoding of recently added syscalls on arc, x32, and xtensa.
417 * Enhanced manual page.
420 * Fixed corner cases in decoding of exit, exit_group, futimesat, getgroups,
421 getresuid, init_module, inotify_init1, kcmp, kexec_load, lookup_dcookie,
422 mq_getsetattr, mq_notify, mq_open, mq_timedreceive, mq_timedsend,
423 name_to_handle_at, prctl, process_vm_readv, process_vm_writev, setfsuid,
424 setgroups, setns, unshare, and utimes syscalls.
425 * Fixed handling of verbose flag in printing of controls array
426 of struct v4l2_ext_controls.
427 * Fixed omission of field names in the output of capability, sigaction,
428 sigevent, statfs, timespec, timeval, and utimbuf structures.
429 * Fixed printing of unknown syscalls in siginfo structure.
430 * Fixed decoding of ioctl constants on m68k.
431 * Fixed cris architecture support.
432 * Fixed cross build when host compiler does not support the same
433 set of warning flags as the cross compiler.
434 * Fixed build on SLE10 and SLE11.
436 Noteworthy changes in release 4.14 (2016-10-04)
437 ===============================================
439 * Changes in behavior
440 * When using -p option without a command and no processes has been attached,
441 strace exits with exit status 1.
444 * Added printing of the mode argument of open and openat syscalls
445 when O_TMPFILE flag is set. (Addresses Fedora bug #1377846).
446 * Enhanced -e abbrev=set, -e raw=set, and -e verbose=set.
447 * Enhanced decoding of futex, keyctl, quotactl, timerfd_settime,
448 and aio family syscalls.
449 * Implemented fetching of the 7th subcall argument on mips o32.
450 * Updated lists of BPF_*, ETH_P_*, KEXEC_ARCH_*, SCTP_*, TCP_*, and *_MAGIC
452 * Updated lists of ioctl commands from Linux 4.8.
453 * Added decoding of new syscalls on sh and sh64.
454 * Added RISC-V architecture support.
457 * Marked io_setup and io_destroy as memory mapping related syscalls.
458 * Fixed leakage of placeholder descriptors to tracees.
459 * Fixed printing of mode_t, umode_t, and umask types.
460 * Fixed decoding of iovec arrays without a limit on total data size.
461 * Fixed decoding of fadvise64, fallocate, futex, keyctl, quotactl, readahead,
462 and ipc family syscalls.
463 * Fixed decoding of invalid syscalls mapped to indirect subcalls.
464 * Fixed decoding of struct btrfs_ioctl_vol_args_v2 on non-native
466 * Fixed decoding of PTRACE_DETACH on sparc and sparc64.
467 * Fixed decoding of struct stat64 on sparc64.
468 * Fixed decoding of uid and gid-related syscalls on sparc64.
469 * Fixed decoding of the forth argument of semctl syscall on sparc64.
470 * Fixed values of tty ioctl constants on sparc64.
471 * Fixed sparc personality support on sparc64.
473 Noteworthy changes in release 4.13 (2016-07-26)
474 ===============================================
477 * Implemented a general netlink socket parser.
478 * Enhanced decoding of socket addresses.
479 * Enhanced decoding of cmsghdr, msghdr, and mmsghdr structures.
480 * Enhanced decoding of accept, accept4, bind, getpeername, getsockname,
481 ipc, recvfrom, recvmsg, recvmmsg, sendto, sendmmsg, and socketcall syscalls.
482 * Updated lists of AF_*, BPF_MAP_TYPE_*, KEY_*, KEYCTL_*, RWF_*, SS_*,
483 and *_MAGIC constants.
484 * Updated lists of ioctl commands from Linux 4.7.
487 * Fixed decoding of pid_t argument of prlimit64 syscall.
488 * Fixed sign extension issues in the parser of struct rusage.
489 * Fixed race condition in decoding of timeout argument of recvmmsg and
490 rt_sigtimedwait syscalls.
491 * Fixed build with fresh linux kernel headers.
493 Noteworthy changes in release 4.12 (2016-05-31)
494 ===============================================
497 * Implemented simultaneous use of -p option and tracing of a command.
498 (addresses Debian bug #549942).
499 * Implemented caching of netlink conversations to reduce amount of time
500 spent in decoding socket details in -yy mode.
501 * Implemented -yy mode decoding of protocol:portid pairs associated with
502 netlink socket descriptors.
503 * Implemented decoding of copy_file_range, preadv2, and pwritev2 syscalls.
504 * Implemented dumping of preadv, preadv2, pwritev, pwritev2, and vmsplice
506 * Implemented decoding of BTRFS_* and UFFDIO_* ioctl commands.
507 * Enhanced decoding of BLK*, EVIOC*, RTC_*, and VIDIOC_* ioctl commands.
508 * Enhanced decoding of fstatfs, fstatfs64, get_mempolicy, getdents,
509 getdents64, getgroups, getpriority, kill, mbind, migrate_pages, mknod,
510 mknodat, personality, poll, ppoll, quotactl, rt_sigpending,
511 rt_sigqueueinfo, rt_sigtimedwait, rt_tgsigqueueinfo, sched_getaffinity,
512 sched_setaffinity, seccomp, set_mempolicy, setgroups, setpriority, statfs,
513 statfs64, tgkill, waitid, and xattr family syscalls.
514 * Enhanced decoding of getxpid, getxuid, and getxgid syscalls on alpha.
515 * Enhanced decoding of pipe syscall on alpha, ia64, mips, sh, and sparc.
516 * Added decoding of bind, listen, and setsockopt direct syscalls on sparc.
517 * Added decoding of osf_statfs64 and osf_fstatfs64 syscalls on alpha.
518 * Added decoding of fadvise64 and fadvise64_64 on s390.
519 * Updated lists of AF_*, BPF_MAP_TYPE_*, CLONE_*, EPOLL*, IPV6_*, MADV_*,
520 MSG_*, PTRACE_*, SEGV_*, SO_*, SOL_*, *_MAGIC, and quotactl constants.
521 * Updated lists of ioctl commands from Linux 4.6.
524 * Fixed build on arc, metag, nios2, or1k, and tile architectures.
525 * Fixed decoding of 32-bit times syscall return value on 64-bit architectures.
526 * Fixed decoding of mlock2 syscall on sparc.
527 * Fixed decoding of osf_shmat syscall on alpha.
528 * Fixed decoding of syscalls unknown to the kernel on s390/s390x.
529 (addresses Debian bug #485979 and Fedora bug #1298294).
530 * Fixed decoding of preadv syscall in case of short read.
531 * Fixed decoding and dumping of readv syscall in case of short read.
532 * Fixed dumping of recvmsg and recvmmsg syscalls in case of short read.
533 * Fixed decoding of mincore syscall's last argument.
534 * Fixed remaining errors in mapping between syscall numbers and numbers
535 of syscall arguments.
536 * Applied various fixes to strace-graph script.
538 Noteworthy changes in release 4.11 (2015-12-21)
539 ===============================================
541 * Changes in behavior
542 * Some syscalls have different names depending on architecture and
543 personality. In these cases, syscall filtering and printing now
544 consistently uses the names that match corresponding __NR_* kernel
545 macros of the tracee's architecture and personality.
546 * Added strace prefix to all diagnostic messages.
549 * Enhanced and extended test suite.
550 * Implemented reliable tracing of processes whose personality differs
551 from the personality of strace, fixed decoding of 32-bit personality
552 syscalls on 64-bit architectures.
553 * When some data referenced by syscall arguments is irrelevant or cannot
554 be read from tracee's memory, strace now prints its address consistently.
555 * When a syscall is restarted using restart_syscall mechanism, strace now
556 shows the syscall name on architectures that expose this information.
557 * Print values returned by epoll_create1, eventfd, eventfd2, fanotify_init,
558 inotify_init1, perf_event_open, pipe, pipe2, signalfd, signalfd4, socket,
559 socketpair, timerfd, and timerfd_create syscalls, as well as F_DUPFD and
560 F_DUPFD_CLOEXEC fcntl commands, as file descriptors.
561 * Optimized decoding of indirect socket syscalls.
562 * Implemented decoding of nanoseconds along with seconds in stat family
563 syscalls (addresses Fedora bug #1251176).
564 * Implemented decoding of struct statfs.f_flags in statfs syscall.
565 * Implemented decoding of siginfo_t.si_syscall and siginfo_t.si_arch
567 * Implemented decoding of indirect syscall on mips o32.
568 * Implemented decoding of IPPROTO_IP control messages.
569 * Implemented decoding of setsockopt syscall multicast arguments.
570 * Enhanced decoding of struct sigevent.
571 * Enhanced decoding of block, loop, mtd, ptp, rtc, SG_IO, socket, tty,
572 and v4l2 ioctl syscall arguments.
573 * Enhanced decoding of epoll_create, fcntl, fcntl64, futex, getdents,
574 getdents64, getsockopt, io_*, mount, msgctl, prctl, quotactl, recvfrom,
575 sendfile, setsockopt, and shmctl syscalls.
576 * Implemented decoding of bpf, execveat, ioperm, iopl, kcmp, kexec_file_load,
577 lookup_dcookie, membarrier, memfd_create, mlock2, name_to_handle_at,
578 open_by_handle_at, sched_getattr, sched_setattr, and userfaultfd syscalls.
579 * Updated lists of AF_*, EPOLL_*, FALLOC_FL_*, F_*, INPUT_PROP_*, IPPROTO_*,
580 IPV6_*, IP_*, KEY_*, LOCK_*, MNT_*, MS_*, PACKET_*, PERF_FLAG_*, PF_*,
581 PR_*, PTRACE_O_*, RENAME_*, SCTP_*, SECBIT_*, SO_*, TCP_*, and siginfo_t
583 * Added Nios II architecture support.
584 * Added new syscall entries to match Linux 4.4.
587 * Fixed potential short read of strings from tracee's memory.
588 * Fixed -qq option in conjunction with -o option.
589 * Fixed filtering of <unavailable> syscalls.
590 * Fixed decoding of ioctl syscall command on aarch64 and 32-bit architectures
591 with 64-bit aligned structures.
592 * Fixed decoding of eventfd2, epoll_create1, signalfd4, and sync_file_range2
593 syscall flags arguments.
594 * Fixed decoding of 4th argument of clock_nanosleep syscall.
595 * Fixed decoding of getpagesize syscall on m68k.
596 * Fixed decoding of getrandom and seccomp syscalls on aarch64.
597 * Fixed decoding of timezone argument of gettimeofday and settimeofday
599 * Fixed decoding of offset argument of mmap2 syscall on arm, sparc,
601 * Fixed decoding of pipe syscall on alpha and mips.
602 * Fixed decoding of pipe2 syscall on ia64, sh, sparc, and sparc64.
603 * Fixed decoding of signal mask argument of pselect6 syscall on x32.
604 * Fixed decoding of signal mask of rt_sigreturn syscall on aarch64, m68k,
606 * Fixed decoding of 4th argument of semctl indirect syscall.
607 * Fixed decoding of sa_restorer and sa_mask of sigaction syscall on m68k.
608 * Fixed decoding of statfs64 and fstatfs64 syscalls on arm eabi.
609 * Fixed decoding of struct dirent on x32.
610 * Fixed decoding of times syscall return value on mips n32 and x32.
611 * Fixed decoding of path argument of umount2 syscall
612 (addresses Debian bug #785050).
613 * Worked around a kernel bug in tracing privileged executables.
614 * Fixed various errors in mapping between syscall numbers and associated
615 information like the number of syscall arguments, the name of syscall,
618 Noteworthy changes in release 4.10 (2015-03-06)
619 ===============================================
622 * Added -yy option to print protocol and address information associated with
624 * Extended "-e read=set" and "-e write=set" options to cover sendmsg,
625 recvmsg, sendmmsg, and recvmmsg syscalls.
626 * Implemented full 32-bit decoding of ioctl commands
627 (addresses Debian bug #692913 and Fedora bug #902788).
628 * Implemented PTRACE_GETREGS API support on ia64.
629 * Implemented PTRACE_GETREGS API support on mips.
630 * Implemented PTRACE_GETREGSET API support on s390/s390x.
631 * Implemented decoding of getrandom and seccomp syscalls.
632 * Implemented full decoding of 64-bit capability sets.
633 * Implemented decoding of all prctl commands.
634 * Implemented decoding of parametrized ioctl commands.
635 * Implemented decoding of evdev ioctl commands.
636 * Implemented decoding of v4l ioctl commands.
637 * Implemented decoding of SG_IO v4 ioctl commands.
638 * Implemented decoding of FIFREEZE/FITHAW/FITRIM ioctl commands.
639 * Implemented decoding of FALLOC_FL_* fallocate flags.
640 * Implemented decoding of rt_sigreturn signal mask on aarch64,
642 * Enhanced socket decoder to support bluetooth sockets.
643 * Enhanced decoding of unlisted ioctl commands.
644 * Enhanced decoding of getsockopt and setsockopt syscall.
645 * Enhanced decoding of sysinfo syscall.
646 * Enhanced decoding of struct cmsghdr.
647 * Enhanced decoding of wait status.
648 * Enhanced aio support on non-x86 architectures by using external libaio.h.
649 * Added O_TMPFILE to the list of recognized open mode flags.
650 * Updated the list of filesystem type constants that is used in decoding
651 statfs family syscalls.
652 * Updated lists of CAP_*, PR_*, PTRACE_*, SCHED_*, SO_*, SOL_*, SWAP_FLAG_*,
654 * Updated lists of signal constants from Linux 3.19.
655 * Updated lists of errno constants from Linux 3.19.
656 * Updated lists of ioctl commands from Linux 3.9.
657 * Added new syscall entries to match Linux 3.19.
660 * Fixed various errors in mapping between syscall numbers and associated
661 information like the number of syscall arguments, the name of syscall,
663 * Fixed quoting issues in printing descriptors, filenames, network interface
664 names, struct utsname members, device/volume names of BLK* ioctl commands.
665 * Fixed uid_t/git_t decoding.
666 * Fixed potential out-of-bounds read issues in getdents/getdents64 decoders.
667 * Fixed potential open flags truncation on some architectures.
668 * Fixed decoding of struct ifreq.ifr_name.
669 * Fixed decoding of SIOCSIFNAME ioctl command.
670 * Fixed decoding of RENAME_* renameat2 flags.
671 * Fixed decoding of UTIME_NOW/UTIME_OMIT timeval structures.
672 * Fixed decoding of indirect ipc subcalls on some architectures.
673 * Fixed decoding of fanotify_mark syscall on 32-bit architectures.
674 * Fixed decoding of 32-bit stat structures on 64-bit architectures.
675 * Fixed decoding of 32-bit struct cmsghdr on 64-bit architectures.
676 * Fixed decoding of 32-bit preadv/pwritev offset on 64-bit architectures.
677 * Fixed decoding of sigreturn/rt_sigreturn signal mask on ia64, ppc, ppc64,
678 sparc, sparc64, mips, and s390.
679 * Fixed instruction pointer output (-i option) on architectures that support
680 several personalities.
681 * Fixed behaviour of "-e read=set" and "-e write=set" when read and write
683 * Fixed build on systems where struct sigaction has no sa_restorer member.
684 * Fixed build with uclibc and musl libc.
687 * Linux kernel >= 2.5.46 is required.
688 Older versions without a decent PTRACE_SETOPTIONS support will not work.
689 * On mips, linux kernel >= 2.6.15 is required.
690 Older versions without a decent PTRACE_GETREGS support will not work.
691 * On s390 and s390x, linux kernel >= 2.6.27 is required.
692 Older versions without a decent PTRACE_GETREGSET support will not work.
694 Noteworthy changes in release 4.9 (2014-08-15)
695 ==============================================
697 * Changes in behavior
698 * Disabled OABI support on ARM EABI systems by default,
699 added --enable-arm-oabi option to enable it at configure time.
702 * Added experimental -k option to print stack trace after each traced syscall.
703 * Added -w option to produce stats on syscall latency.
704 (addresses Debian bug #457497).
705 * Added ARC architecture support.
706 * Added PTRACE_GETREGS API support on PowerPC.
707 * Enhanced Bionic libc and musl libc support.
708 * Enhanced tracing of x86 personality processes on x86_64 and x32.
709 * Enhanced tracing of ARM personality processes on AArch64.
710 * Enhanced 32/64bit personality detection on PowerPC.
711 * Implemented decoding of add_key, ioprio_get, ioprio_set, kexec_load, keyctl,
712 renameat2, and request_key syscalls.
713 * Robustified decoding of select, pselect, and io_submit syscalls.
714 * Enhanced decoding of delete_module, fanotify_init, fanotify_mark, fcntl,
715 setdomainname, sethostname, setns, and sync_file_range syscalls.
716 * Enhanced decoding of signal bitmasks.
717 * Enhanced decoding of file descriptors.
718 * Enhanced siginfo_t decoding.
719 * Enhanced PF_NETLINK decoding.
720 * Updated CLOCK_* constants
721 (addresses Fedora bug #1088455).
722 * Added new syscall entries to match Linux 3.16.
725 * Added shmat and shmdt to the set of memory mapping related syscalls.
726 * Fixed detaching from stopped processes.
727 * Fixed fanotify_mark decoding on 32bit architectures.
728 * Fixed offset decoding in preadv and pwritev syscalls.
729 * Fixed select decoding for glibc in _FORTIFY_SOURCE mode.
730 * Fixed decoding of epoll_ctl syscall with EPOLL_CTL_DEL argument.
731 * Fixed build when <sys/ptrace.h> and <linux/ptrace.h> conflict
732 (addresses Fedora bug #993384).
733 * Miscellaneous corrections in the manual page.
734 (Addresses Debian bug #725987).
736 Noteworthy changes in release 4.8 (2013-06-03)
737 ==============================================
739 * Changes in behavior
740 * In case of normal strace termination, when the trace output is
741 redirected to a pipe, strace now closes it and waits for the pipe
742 process termination before exit.
745 * Implemented tracing using PTRACE_SEIZE API (when available).
746 * Implemented more reliable PTRACE_GETREGSET-based process personality
747 detection on x86-64 and x32 (when available).
748 * Added -e trace=memory option for tracing memory mapping related syscalls.
749 * Documented -b option.
750 * Allowed exit status messages to be suppressed by giving -q option twice.
751 * Added AArch64 architecture support
752 (addresses Debian bug #693074 and Fedora bug #969858).
753 * Added support for OpenRISC 1000, Meta, and Xtensa architectures.
754 * Added tilegx personality support for Tile.
755 * Enhanced support of NOMMU architectures.
756 * Enhanced decoding of getdents, mmap, perf_event_open, ptrace, and
758 * Added new syscall entries to match Linux 3.9.
759 * Regenerated the list of common ioctl names from Linux 3.9.
760 * Updated the list of errno constants.
761 * Updated lists of AF_*, MADV_*, MAP_*, MSG_*, MS_*, PF_*, PR_*,
762 PTRACE_O_*, and TCP_* constants.
763 * Implemented decoding of UBI ioctls.
764 * Removed redundant "*32" ioctl names.
767 * Fixed ERESTARTNOINTR leaking to userspace on ancient kernels
768 (addresses Fedora bug #659382).
769 * Fixed kernel release string parsing
770 (addresses Debian bug #702309).
771 * Fixed decoding of *xattr syscalls
772 (addresses Fedora bug #885233).
773 * Fixed handling of files with 64-bit inode numbers by 32-bit strace
774 (addresses Fedora bug #912790).
775 * Fixed tracing forks on SPARC.
776 * Fixed decoding of fadvise64, fallocate, ftruncate64, io_submit, pread,
777 preadv, pwrite, pwritev, readahead, sigaltstack, sync_file_range, sysctl,
778 and truncate64 syscalls.
779 * Fixed categories of multiple syscalls on most of supported architectures.
780 * Fixed decoding of non-native 32-bit personality recv[m]msg syscalls.
781 * Fixed decoding of multiple 32-bit personality syscalls on x32.
782 * Fixed decoding of long long syscall arguments on ARM, MIPS/o32, PowerPC,
783 S390x, and Tile architectures.
784 * Fixed semtimedop decoding on S390x.
785 * Fixed sram_alloc decoding on Blackfin.
786 * Fixed build when process_vm_readv is a stab.
787 * Fixed build with older versions of libaio.h.
789 Noteworthy changes in release 4.7 (2012-05-02)
790 ==============================================
792 * Changes in behavior
793 * strace no longer suspends waitpid until there is a child
794 for waitpid'ing process to collect status from.
795 * strace no longer detaches from a tracee which is supposed
797 * strace now issues a new message: "+++ exited with EXITCODE +++"
798 which shows exact moment strace got exit notification,
799 analogous to existing "+++ killed by SIG +++" message.
802 * Added x32 personality support (x86_64 architecture).
803 * Added -y and -P options to print file descriptor paths and
804 filter by those paths.
805 * Added -I option to control strace interactivity.
806 * Allowed -p option to take comma or whitespace-separated list of PIDs.
807 * Added strace_log_merge script helper to merge timestamped "strace -ff"
809 * Implemented decoding of clock_adjtime, get_robust_list, migrate_pages,
810 preadv, prlimit64, process_vm_readv, process_vm_writev, pwritev,
811 recvmmsg, recvmsg, rt_tgsigqueueinfo, sendmmsg, setns, set_robust_list,
812 sched_rr_get_interval, splice, syslog, tee and vmsplice syscalls.
813 * Enhanced decoding of capget, capset, getrlimit, flistxattr, io_submit,
814 listxattr, setrlimit and swapon syscalls.
815 * Implemented decoding of loop and mtd ioctls.
816 * Added syscall entries for new linux syscalls.
817 * Added syscall entries for direct socket system calls on powerpc.
818 * Updated the list of errno constants.
819 * Updated lists of MSG_*, STA_*, and TCP_* constants.
820 * Regenerated the list of ioctl names from Linux 3.3.
821 * Enhanced switching between processes with different personalities.
822 * Enhanced signals reporting by using short signal names.
823 * Made ERESTART* messages more descriptive.
824 * Made parsing of numbers from strings more robust.
825 * Added support for compat_statfs64 and statfs64.f_flags.
826 * Changed read of data blocks to use single process_vm_readv syscall
827 (when available) instead of several PTRACE_PEEKDATA operations.
828 * Changed read of registers on x86 and x86-64 to use single PTRACE_GETREGS
829 operation instead of several PTRACE_PEEKUSER operations.
830 * Applied various optimizations to make strace work faster.
833 * Implemented proper handling of real SIGTRAPs on kernels supporting
834 PTRACE_O_TRACESYSGOOD.
835 (Addresses Fedora bug #162774).
836 * Fixed sockaddr_un.sun_path name in decoded output.
837 (Addresses Debian bug #554946).
838 * Fixed to avoid potential core file clobbering on exit.
839 (Addresses Debian bug #656398).
840 * Fixed a typo in documentation.
841 (Addresses Debian bug #653309).
842 * Fixed decoding of timer id returned by timer_create.
843 * Fixed epoll_create1, epoll_wait and epoll_pwait decoding.
844 * Fixed *at syscalls flags decoding.
845 * Fixed ARM EABI 64-bit syscall's arguments decoding.
846 * Fixed semtimedop decoding on s390.
847 * Fixed osf_sigprocmask decoding on alpha.
848 * Fixed ipc and socket subcall decoding on several architectures.
849 * Corrected syscall entries for epoll_pwait, epoll_create, epoll_ctl,
850 epoll_wait, mincore, mlockall, prctl, reboot, sendfile, sendfile64,
851 sendmsg, sgetmask, ssetmask, swapon, tgkill and tkill syscalls.
852 * Corrected io_* syscall entries on ARM.
853 * Fixed PID prefix printing in "strace -oLOG -ff -p1 -p2 -p3" case.
854 * Fixed logging of unfinished lines in "strace -oLOG -ff" case.
855 * Fixed build when libaio-devel is not available.
856 * Fixed configure checks for PTRACE_* constants.
857 * Fixed compilation warnings remained on several architectures.
860 * Removed all non-Linux code. After years of neglect, that dead code
861 just hampered further strace development.
862 * Linux kernel >= 2.6.18 is recommended. Older versions might still
863 work but they haven't been thoroughly tested with this release.
865 Noteworthy changes in release 4.6 (2011-03-15)
866 ==============================================
868 * Changes in behavior
869 * Print diagnostic information about changes in personality mode to
870 standard error instead of standard output.
873 * Implemented a new method of following clone, fork, and vfork
874 syscalls using the Linux kernel's explicit facilities for tracing
875 creation of threads and child processes.
876 * Implemented CLONE_PARENT and CLONE_UNTRACED flags handling.
877 * Implemented decoding of TLS syscalls on m68k.
878 * Implemented biarch support on powerpc64.
879 * Implemented biarch support for getrlimit() and setrlimit().
880 * Implemented decoding of struct ucred in getsockopt SO_PEERCRED.
881 * Implemented SOL_SCTP socket options decoding.
882 * Added HDIO_* ioctl names.
883 (Addresses Debian bug #450953).
884 * Added LOOP_* ioctl names.
885 * Updated lists of CLOCK_*, CLONE_*, MS_*, and SOL_* constants
886 to match Linux 2.6.37.
887 * Updated the list of IPPROTO_* constants to match netinet/in.h.
888 * Implemented decoding of HDIO_* and BLK* ioctls.
889 * Added MicroBlaze architecture support.
890 * Added new syscall entries to match Linux 2.6.37.
891 * Regenerated list of ioctl names from Linux 2.6.37.
892 * Enhanced signal notification decoding.
893 * Documented -C and -D options.
896 * Fixed fetching syscall arguments on m68k.
897 * Fixed an error when judging whether a process has children.
898 * Fixed get/set_robust_list syscall numbers for powerpc.
899 * Fixed a corner case in printing clone flags.
900 * Fixed cross-compiling issues.
901 * Fixed build issues on powerpc64, SH and SPARC.
902 * Fixed syscall flags of fstatat*, mmap, mmap2, fadvise64*, swapoff,
903 fgetxattr, flistxattr, fremovexattr, epoll_create, fallocate,
904 fanotify_init, and fanotify_mark syscalls.
905 * Fixed decoding of get[ug]id, gete[ug]id and setfs[ug]id return values.
906 * Fixed biarch support in IO dumping.
907 * Fixed raw exit_group decoding.
908 * Fixed decoding of file descriptors on 64-bit architectures.
909 * Fixed a corner case in waitpid handling.
910 (Addresses Red Hat bug #663547).
911 * Fixed stat64 decoding on mips
912 (Addresses Debian bug #599028).
913 * Fixed misleading italics in the manual page.
914 (Addresses Debian bug #589323).
916 Noteworthy changes in release 4.5.20 (2010-04-13)
917 =================================================
920 * Implemented decoding of new linux syscalls: inotify_init1, recvmmsg.
921 * Implemented basic decoding of new linux syscalls: preadv, pwritev,
922 rt_tgsigqueueinfo, perf_event_open.
923 * Enhanced decoding of recently added syscalls on non-x86 architectures
924 by replacing a bare decoder with elaborate parsers enabled earlier
926 * Implemented -C option to combine regular and -c output.
927 (Addresses Debian bug #466196)
928 * Enhanced decoding of mbind and mremap syscalls.
929 * Enhanced SOL_PACKET socket options decoding.
930 * Regenerated list of ioctl names from linux 2.6.33.
931 * Added TILE architecture support.
934 * Fixed build with Linux kernel headers 2.6.32-rc5+.
935 (Addresses Debian bug #560516 and Fedora bug #539044)
936 * Fixed build on mips.
937 * Fixed handling of Linux systems without struct statfs64.
938 * Fixed reporting signal mask by sigreturn on powerpc.
939 * Fixed potential stack buffer overflow in select decoder.
940 (Addresses Fedora bug #556678)
941 * Corrected msgsnd indirect ipccall decoding.
942 * Corrected decoding of 64bit syscalls.
943 (Addresses Debian bug #570603)
944 * Corrected getsockopt decoding on architectures where
945 sizeof(long) > sizeof(int).
946 (Addresses Debian bug #494844)
947 * Corrected decoding of epoll_pwait.
948 (Addresses Debian bug #513014)
949 * Corrected handling of killed threads.
951 Noteworthy changes in release 4.5.19 (2009-10-21)
952 =================================================
954 * Changes in behavior
955 * When command exits, strace now exits with the same exit status.
956 If command is terminated by a signal, strace terminates itself
957 with the same signal, so that strace can be used as a wrapper
958 process transparent to the invoking parent process.
959 When using -p option, the exit status of strace is zero unless
960 there was an unexpected error in doing the tracing.
961 (Addresses Fedora bug #105371 and Debian bug #37665)
964 * Implemented decoding of new Linux syscalls: accept4, dup3,
965 epoll_create1, eventfd2, inotify_init1, pipe2, signalfd4.
966 * Implemented decoding of socket type flags introduced in Linux 2.6.27.
967 * Implemented decoding of accept4 socketcall.
968 * Enhanced prctl decoding.
969 * Enhanced nanosleep decoding.
970 * Enhanced ptrace decoding.
971 * Enhanced futex decoding.
972 * Enhanced CAP_* decoding.
973 * Enhanced SIOCS* ioctls decoding.
974 * Enhanced fcntl F_* flags decoding.
975 * Enhanced semop/semtimedop decoding.
976 * Updated ARM architecture support.
977 * Added Blackfin architecture support.
978 * Added AVR32 architecture support.
979 * Added CRIS architecture support.
980 * Made strace detect when traced process suddenly disappeared.
983 * Fixed syscall numbers for tee and sync_file_range.
984 (Addresses Debian bug #503124)
985 * Fixed several bugs in strings decoder, including potential heap
987 (Addresses Fedora bugs #470529, #478324 and #511035)
988 * Marked sendfile(2) as a network syscall.
989 (Addresses Debian bug #509499)
990 * Fixed accept(2) decoding.
991 (Addresses Debian bug #507573)
992 * Fixed sigtimedwait(2) decoding.
993 * Fixed build on ARM EABI.
994 (Addresses Debian bugs #520084 and #535564, and Fedora bug #507576)
995 * Fixed display of 32-bit fcntl(F_SETLK) on 64-bit architectures.
996 (Addresses Red Hat bug #471169)
997 * Fixed display of 32-bit argv array on 64-bit architectures.
998 (Addresses Fedora bug #519480)
999 * Fixed display of 32-bit struct sigaction on 64-bit architectures.
1000 * Fixed HPPA architecture support.
1001 (Addresses Debian bugs #437928 and #546619)
1006 * Support new Linux/PPC system call subpage_prot and PROT_SAO flag.
1007 * In sigaction system call, display sa_flags value along with SIG_DFL/SIG_IGN.
1012 * -F is now deprecated, -f has traced vfork too on Linux for a long time now.
1013 * Print O_CLOEXEC, MSG_CMSG_CLOEXEC flag bits.
1014 * Improved output for prctl system call on Linux.
1015 * Improved support for Linux/ARM.
1016 * SA_NOMASK is now spelled SA_NODEFER, and SA_ONESHOT is spelled SA_RESETHAND.
1021 * Improved output for delete_module, futex, and mbind system calls on Linux.
1022 * Improved output for SG_IO ioctls on Linux.
1023 * Support new Linux system calls move_pages, utimensat, signalfd, timerfd,
1024 eventfd, getcpu, epoll_pwait.
1029 * Several biarch improvements.
1030 * Improved output for adjtimex, sysctl, quotactl, mount, umount.
1031 * Support new Linux system calls *at, inotify*, pselect6, ppoll and unshare.
1036 * Accept numeric system calls in -e.
1041 * Introduce "-e trace=desc".
1046 * Better x86-64 support for IA32 processes.
1047 * Update PowerPC system calls.
1048 * Better printing for Linux aio system calls.
1052 * Quick fix release for build issues.
1053 * One fix for Linux/ARM system call table.
1058 * Print fault address for SIGSEGV/SIGBUS signals when available.
1063 * Improve socket ioctl printing.
1064 * Update Linux/IA64 syscall list.
1065 * Fix Linux/x86-64 syscall argument extraction for 32-bit processes.
1066 * Improve mount flags printing.
1067 * Support symbolic printing of x86_64 arch_prctl parameters.
1072 * Update syscall tables for Alpha, ARM, HPPA.
1073 * Support new Linux syscalls mbind, set_mempolicy, get_mempolicy, waitid.
1074 * Support Linux syscalls fadvise64, fadvise64_64, and epoll_*.
1075 * Improve ioctl command name matching.
1076 * Print RTC_* ioctl structure contents.
1077 * Support newer RLIMIT_* values.
1078 * Print struct cmsghdr details in sendmsg.
1083 * Print attribute values in *xattr system calls on Linux.
1084 * Include pread and pwrite calls in -e read and -e write tracing.
1085 * Update SO_* and IP_* value lists and add IPV6_* values for socket options.
1086 * Print clock_t values symbolically in Linux clock_* system calls.
1090 * Bug fixes, Linux ioctl updates.
1091 * David Miller contributed support for Linux/SPARC64.
1099 * Update Linux ioctl lists.
1100 * Update PF_* and AF_* value lists.
1101 * The 4.5.3 -p behavior for NPTL threads applies only under -f, and got fixed.
1106 * On Linux using NPTL threads, -p will now attach to all threads in a process.
1107 * Handle new mq_* system calls in Linux 2.6.6 and later.
1112 * Report some new VM_* bit values on Linux.
1113 * Better output for Linux sched_* system calls.
1118 * Display multiple ioctl name matches on Linux.
1122 * New port to AMD's x86-64 architecture. One strace binary can
1123 handle both new x86-64 and old i386 processes.
1124 * Fixed support for LFS64 calls.
1125 * New switch -E to add/remove environment variables for the command.
1126 * Merged s390/s390x port.
1127 * Trace an unbounded number of processes.
1128 * Handle numerous new system calls in Linux 2.5, and new threads semantics.
1129 * Fixed bugs with attach/detach leaving things stopped.
1130 * Fixed traced process seeing ECHILD despite live, traced children
1131 in waitpid calls with WNOHANG.
1132 * Stuart Menefy contributed a port to Linux/SH.
1133 * Stephen Thomas contributed a port to Linux/SH64.
1134 * Many other bug fixes.
1138 * Fix Linux/ia64 support, looks like someone renamed a few things on us
1139 * Fix the ioctl setup for Linux, turned out it did not really work.
1140 Improve the ioctl extractor as well so we decode some more ones.
1144 * compile fixes for Linux/mips
1148 * Linux ia64 and hppa ports added
1149 * The usual Linux syscall updates (includes 32bit uid/gid support),
1150 * Linux ioctl list updated
1151 * Support IPv6 scope ids
1152 * FreeBSD/i386 port added
1153 * UnixWare and Solaris updates
1154 * Better support for tracing multithreaded processes in Linux
1158 * Compiles on glibc2.0 systems again
1159 * Linux/S390 port added
1160 * The usual Linux syscall updates
1161 * we can follow fork on arm now
1165 * Linux/MIPS port added
1166 * Lots of Linux updates again
1167 * Improved IPv6 support
1173 * Compiles on glibc2.0 systems again
1177 * Get stat structure properly on Linux 64bit archs
1178 * Personalities work again
1179 * Compile correctly on SunOS again
1185 * Linux (ultra)sparc fixes
1192 * add support for more Linux architectures (powerpc, sparc, arm)
1193 * support lots more Linux syscalls
1194 * fix signal handling
1195 * add IPX and IPIP support
1196 * check stray syscall after execv
1197 * fix hanging children
1199 Changes in version 3.1
1200 ======================
1202 * Irix5 is supported
1203 * Linux 68k is supported
1204 * Linux alpha is supported
1205 * configure is upgraded to autoconf 2.x
1206 * using -f in combination with -e now works correctly
1207 * output can be piped to a program
1208 * tracing setuid programs works better
1209 * it is now reasonable to install strace setuid to root in some circumstances
1210 * new useful tracing names like file and process to trace whole
1211 classes of system calls, e.g. -efile traces all system calls that
1212 take a file name as an argument
1213 * IPC calls on SunOS 4.1.x are decoded
1214 * Linux program memory is reliably dereferenced
1215 * Linux decodes at least the name of all syscalls as of pre2.0.4
1216 * various cosmetic changes and bug fixes
1218 Changes from versions 2.x to version 3.0
1219 ========================================
1221 * filename arguments are neither abbreviated nor stringified
1222 * string arguments are now true C strings using octal instead of hex by default
1223 * preprocessor constants are never shortened (e.g. was RDONLY => now O_RDONLY)
1224 * by default the output for multiple processes now goes into one file
1225 * all structures, vectors, bitsets, etc. use consistent output formats
1226 * the -c option now means count calls, -i does what the old -c used to do
1228 New Features in version 3.0
1229 ===========================
1231 * non-ascii strings can be optionally printed entirely in hex
1232 * the output format is readable when multiple processes are generating output
1233 * exit values are printed in an alignment column
1234 * is is possible to suppress messages about attaching and detaching
1235 * various tracing features can be enabled on a per syscall/signal/desc basis
1236 * selective tracing of syscalls
1237 * selective printing of syscall structures
1238 * selective abbreviation of long structures on a per syscall basis
1239 * selective printing of raw syscall arguments and results
1240 * selective tracing of signals
1241 * selective dumping of all I/O read from file descriptors
1242 * selective dumping of all I/O written to file descriptors
1243 * optional counting of time, calls, and errors for each syscall
projects / strace / blob