+Noteworthy changes in release ?.?? (????-??-??)
+===============================================
+
+Noteworthy changes in release 4.15 (2016-12-14)
+===============================================
+
+* Changes in behavior
+ * Time stamps are now printed according to ISO 8601.
+ * Changed output format of val3 parameter of futex FUTEX_WAKE_OP operation.
+ * The last argument of mincore, sched_getaffinity, and sched_setaffinity
+ syscalls is now formatted as an array.
+
+* Improvements
+ * Implemented syscall fault injection (-e fault=... option).
+ * Implemented decoding of DM_* ioctl commands.
+ * Implemented decoding of attr parameter of perf_event_open syscall.
+ * Implemented decoding of pkey_alloc, pkey_free, and pkey_mprotect syscalls.
+ * Implemented dumping of mq_timedsend and mq_timedreceive syscalls.
+ * Implemented decoding of PR_SET_FP_MODE and PR_GET_FP_MODE operations
+ of prctl syscall.
+ * Implemented PTRACE_GETREGS API support on m68k.
+ * Updated lists of ARCH_*, BPF_*, BTRFS_*, FALLOC_*, MS_*, *_MAGIC,
+ and V4L2_* constants.
+ * Updated lists of ioctl commands from Linux 4.9.
+ * Added decoding of recently added syscalls on arc, x32, and xtensa.
+ * Enhanced manual page.
+
+* Bug fixes
+ * Fixed corner cases in decoding of exit, exit_group, futimesat, getgroups,
+ getresuid, init_module, inotify_init1, kcmp, kexec_load, lookup_dcookie,
+ mq_getsetattr, mq_notify, mq_open, mq_timedreceive, mq_timedsend,
+ name_to_handle_at, prctl, process_vm_readv, process_vm_writev, setfsuid,
+ setgroups, setns, unshare, and utimes syscalls.
+ * Fixed handling of verbose flag in printing of controls array
+ of struct v4l2_ext_controls.
+ * Fixed omission of field names in the output of capability, sigaction,
+ sigevent, statfs, timespec, timeval, and utimbuf structures.
+ * Fixed printing of unknown syscalls in siginfo structure.
+ * Fixed decoding of ioctl constants on m68k.
+ * Fixed cris architecture support.
+ * Fixed cross build when host compiler does not support the same
+ set of warning flags as the cross compiler.
+ * Fixed build on SLE10 and SLE11.
+
+Noteworthy changes in release 4.14 (2016-10-04)
+===============================================
+
+* Changes in behavior
+ * When using -p option without a command and no processes has been attached,
+ strace exits with exit status 1.
+
+* Improvements
+ * Added printing of the mode argument of open and openat syscalls
+ when O_TMPFILE flag is set. (Addresses Fedora bug #1377846).
+ * Enhanced -e abbrev=set, -e raw=set, and -e verbose=set.
+ * Enhanced decoding of futex, keyctl, quotactl, timerfd_settime,
+ and aio family syscalls.
+ * Implemented fetching of the 7th subcall argument on mips o32.
+ * Updated lists of BPF_*, ETH_P_*, KEXEC_ARCH_*, SCTP_*, TCP_*, and *_MAGIC
+ constants.
+ * Updated lists of ioctl commands from Linux 4.8.
+ * Added decoding of new syscalls on sh and sh64.
+ * Added RISC-V architecture support.
+
+* Bug fixes
+ * Marked io_setup and io_destroy as memory mapping related syscalls.
+ * Fixed leakage of placeholder descriptors to tracees.
+ * Fixed printing of mode_t, umode_t, and umask types.
+ * Fixed decoding of iovec arrays without a limit on total data size.
+ * Fixed decoding of fadvise64, fallocate, futex, keyctl, quotactl, readahead,
+ and ipc family syscalls.
+ * Fixed decoding of invalid syscalls mapped to indirect subcalls.
+ * Fixed decoding of struct btrfs_ioctl_vol_args_v2 on non-native
+ personalities.
+ * Fixed decoding of PTRACE_DETACH on sparc and sparc64.
+ * Fixed decoding of struct stat64 on sparc64.
+ * Fixed decoding of uid and gid-related syscalls on sparc64.
+ * Fixed decoding of the forth argument of semctl syscall on sparc64.
+ * Fixed values of tty ioctl constants on sparc64.
+ * Fixed sparc personality support on sparc64.
+
+Noteworthy changes in release 4.13 (2016-07-26)
+===============================================
+
+* Improvements
+ * Implemented a general netlink socket parser.
+ * Enhanced decoding of socket addresses.
+ * Enhanced decoding of cmsghdr, msghdr, and mmsghdr structures.
+ * Enhanced decoding of accept, accept4, bind, getpeername, getsockname,
+ ipc, recvfrom, recvmsg, recvmmsg, sendto, sendmmsg, and socketcall syscalls.
+ * Updated lists of AF_*, BPF_MAP_TYPE_*, KEY_*, KEYCTL_*, RWF_*, SS_*,
+ and *_MAGIC constants.
+ * Updated lists of ioctl commands from Linux 4.7.
+
+* Bug fixes
+ * Fixed decoding of pid_t argument of prlimit64 syscall.
+ * Fixed sign extension issues in the parser of struct rusage.
+ * Fixed race condition in decoding of timeout argument of recvmmsg and
+ rt_sigtimedwait syscalls.
+ * Fixed build with fresh linux kernel headers.
+
+Noteworthy changes in release 4.12 (2016-05-31)
+===============================================
+
+* Improvements
+ * Implemented simultaneous use of -p option and tracing of a command.
+ (addresses Debian bug #549942).
+ * Implemented caching of netlink conversations to reduce amount of time
+ spent in decoding socket details in -yy mode.
+ * Implemented -yy mode decoding of protocol:portid pairs associated with
+ netlink socket descriptors.
+ * Implemented decoding of copy_file_range, preadv2, and pwritev2 syscalls.
+ * Implemented dumping of preadv, preadv2, pwritev, pwritev2, and vmsplice
+ syscalls.
+ * Implemented decoding of BTRFS_* and UFFDIO_* ioctl commands.
+ * Enhanced decoding of BLK*, EVIOC*, RTC_*, and VIDIOC_* ioctl commands.
+ * Enhanced decoding of fstatfs, fstatfs64, get_mempolicy, getdents,
+ getdents64, getgroups, getpriority, kill, mbind, migrate_pages, mknod,
+ mknodat, personality, poll, ppoll, quotactl, rt_sigpending,
+ rt_sigqueueinfo, rt_sigtimedwait, rt_tgsigqueueinfo, sched_getaffinity,
+ sched_setaffinity, seccomp, set_mempolicy, setgroups, setpriority, statfs,
+ statfs64, tgkill, waitid, and xattr family syscalls.
+ * Enhanced decoding of getxpid, getxuid, and getxgid syscalls on alpha.
+ * Enhanced decoding of pipe syscall on alpha, ia64, mips, sh, and sparc.
+ * Added decoding of bind, listen, and setsockopt direct syscalls on sparc.
+ * Added decoding of osf_statfs64 and osf_fstatfs64 syscalls on alpha.
+ * Added decoding of fadvise64 and fadvise64_64 on s390.
+ * Updated lists of AF_*, BPF_MAP_TYPE_*, CLONE_*, EPOLL*, IPV6_*, MADV_*,
+ MSG_*, PTRACE_*, SEGV_*, SO_*, SOL_*, *_MAGIC, and quotactl constants.
+ * Updated lists of ioctl commands from Linux 4.6.
+
+* Bug fixes
+ * Fixed build on arc, metag, nios2, or1k, and tile architectures.
+ * Fixed decoding of 32-bit times syscall return value on 64-bit architectures.
+ * Fixed decoding of mlock2 syscall on sparc.
+ * Fixed decoding of osf_shmat syscall on alpha.
+ * Fixed decoding of syscalls unknown to the kernel on s390/s390x.
+ (addresses Debian bug #485979 and Fedora bug #1298294).
+ * Fixed decoding of preadv syscall in case of short read.
+ * Fixed decoding and dumping of readv syscall in case of short read.
+ * Fixed dumping of recvmsg and recvmmsg syscalls in case of short read.
+ * Fixed decoding of mincore syscall's last argument.
+ * Fixed remaining errors in mapping between syscall numbers and numbers
+ of syscall arguments.
+ * Applied various fixes to strace-graph script.
+
+Noteworthy changes in release 4.11 (2015-12-21)
+===============================================
+
+* Changes in behavior
+ * Some syscalls have different names depending on architecture and
+ personality. In these cases, syscall filtering and printing now
+ consistently uses the names that match corresponding __NR_* kernel
+ macros of the tracee's architecture and personality.
+ * Added strace prefix to all diagnostic messages.
+
+* Improvements
+ * Enhanced and extended test suite.
+ * Implemented reliable tracing of processes whose personality differs
+ from the personality of strace, fixed decoding of 32-bit personality
+ syscalls on 64-bit architectures.
+ * When some data referenced by syscall arguments is irrelevant or cannot
+ be read from tracee's memory, strace now prints its address consistently.
+ * When a syscall is restarted using restart_syscall mechanism, strace now
+ shows the syscall name on architectures that expose this information.
+ * Print values returned by epoll_create1, eventfd, eventfd2, fanotify_init,
+ inotify_init1, perf_event_open, pipe, pipe2, signalfd, signalfd4, socket,
+ socketpair, timerfd, and timerfd_create syscalls, as well as F_DUPFD and
+ F_DUPFD_CLOEXEC fcntl commands, as file descriptors.
+ * Optimized decoding of indirect socket syscalls.
+ * Implemented decoding of nanoseconds along with seconds in stat family
+ syscalls (addresses Fedora bug #1251176).
+ * Implemented decoding of struct statfs.f_flags in statfs syscall.
+ * Implemented decoding of siginfo_t.si_syscall and siginfo_t.si_arch
+ in SIGSYS signal.
+ * Implemented decoding of indirect syscall on mips o32.
+ * Implemented decoding of IPPROTO_IP control messages.
+ * Implemented decoding of setsockopt syscall multicast arguments.
+ * Enhanced decoding of struct sigevent.
+ * Enhanced decoding of block, loop, mtd, ptp, rtc, SG_IO, socket, tty,
+ and v4l2 ioctl syscall arguments.
+ * Enhanced decoding of epoll_create, fcntl, fcntl64, futex, getdents,
+ getdents64, getsockopt, io_*, mount, msgctl, prctl, quotactl, recvfrom,
+ sendfile, setsockopt, and shmctl syscalls.
+ * Implemented decoding of bpf, execveat, ioperm, iopl, kcmp, kexec_file_load,
+ lookup_dcookie, membarrier, memfd_create, mlock2, name_to_handle_at,
+ open_by_handle_at, sched_getattr, sched_setattr, and userfaultfd syscalls.
+ * Updated lists of AF_*, EPOLL_*, FALLOC_FL_*, F_*, INPUT_PROP_*, IPPROTO_*,
+ IPV6_*, IP_*, KEY_*, LOCK_*, MNT_*, MS_*, PACKET_*, PERF_FLAG_*, PF_*,
+ PR_*, PTRACE_O_*, RENAME_*, SCTP_*, SECBIT_*, SO_*, TCP_*, and siginfo_t
+ constants.
+ * Added Nios II architecture support.
+ * Added new syscall entries to match Linux 4.4.
+
+* Bug fixes
+ * Fixed potential short read of strings from tracee's memory.
+ * Fixed -qq option in conjunction with -o option.
+ * Fixed filtering of <unavailable> syscalls.
+ * Fixed decoding of ioctl syscall command on aarch64 and 32-bit architectures
+ with 64-bit aligned structures.
+ * Fixed decoding of eventfd2, epoll_create1, signalfd4, and sync_file_range2
+ syscall flags arguments.
+ * Fixed decoding of 4th argument of clock_nanosleep syscall.
+ * Fixed decoding of getpagesize syscall on m68k.
+ * Fixed decoding of getrandom and seccomp syscalls on aarch64.
+ * Fixed decoding of timezone argument of gettimeofday and settimeofday
+ * syscalls.
+ * Fixed decoding of offset argument of mmap2 syscall on arm, sparc,
+ and sparc64.
+ * Fixed decoding of pipe syscall on alpha and mips.
+ * Fixed decoding of pipe2 syscall on ia64, sh, sparc, and sparc64.
+ * Fixed decoding of signal mask argument of pselect6 syscall on x32.
+ * Fixed decoding of signal mask of rt_sigreturn syscall on aarch64, m68k,
+ and x32.
+ * Fixed decoding of 4th argument of semctl indirect syscall.
+ * Fixed decoding of sa_restorer and sa_mask of sigaction syscall on m68k.
+ * Fixed decoding of statfs64 and fstatfs64 syscalls on arm eabi.
+ * Fixed decoding of struct dirent on x32.
+ * Fixed decoding of times syscall return value on mips n32 and x32.
+ * Fixed decoding of path argument of umount2 syscall
+ (addresses Debian bug #785050).
+ * Worked around a kernel bug in tracing privileged executables.
+ * Fixed various errors in mapping between syscall numbers and associated
+ information like the number of syscall arguments, the name of syscall,
+ and syscall decoder.
+
+Noteworthy changes in release 4.10 (2015-03-06)
+===============================================
+
+* Improvements
+ * Added -yy option to print protocol and address information associated with
+ socket descriptors.
+ * Extended "-e read=set" and "-e write=set" options to cover sendmsg,
+ recvmsg, sendmmsg, and recvmmsg syscalls.
+ * Implemented full 32-bit decoding of ioctl commands
+ (addresses Debian bug #692913 and Fedora bug #902788).
+ * Implemented PTRACE_GETREGS API support on ia64.
+ * Implemented PTRACE_GETREGS API support on mips.
+ * Implemented PTRACE_GETREGSET API support on s390/s390x.
+ * Implemented decoding of getrandom and seccomp syscalls.
+ * Implemented full decoding of 64-bit capability sets.
+ * Implemented decoding of all prctl commands.
+ * Implemented decoding of parametrized ioctl commands.
+ * Implemented decoding of evdev ioctl commands.
+ * Implemented decoding of v4l ioctl commands.
+ * Implemented decoding of SG_IO v4 ioctl commands.
+ * Implemented decoding of FIFREEZE/FITHAW/FITRIM ioctl commands.
+ * Implemented decoding of FALLOC_FL_* fallocate flags.
+ * Implemented decoding of rt_sigreturn signal mask on aarch64,
+ x32, and x86_64.
+ * Enhanced socket decoder to support bluetooth sockets.
+ * Enhanced decoding of unlisted ioctl commands.
+ * Enhanced decoding of getsockopt and setsockopt syscall.
+ * Enhanced decoding of sysinfo syscall.
+ * Enhanced decoding of struct cmsghdr.
+ * Enhanced decoding of wait status.
+ * Enhanced aio support on non-x86 architectures by using external libaio.h.
+ * Added O_TMPFILE to the list of recognized open mode flags.
+ * Updated the list of filesystem type constants that is used in decoding
+ statfs family syscalls.
+ * Updated lists of CAP_*, PR_*, PTRACE_*, SCHED_*, SO_*, SOL_*, SWAP_FLAG_*,
+ and TFD_* constants.
+ * Updated lists of signal constants from Linux 3.19.
+ * Updated lists of errno constants from Linux 3.19.
+ * Updated lists of ioctl commands from Linux 3.9.
+ * Added new syscall entries to match Linux 3.19.
+
+* Bug fixes
+ * Fixed various errors in mapping between syscall numbers and associated
+ information like the number of syscall arguments, the name of syscall,
+ and syscall decoder.
+ * Fixed quoting issues in printing descriptors, filenames, network interface
+ names, struct utsname members, device/volume names of BLK* ioctl commands.
+ * Fixed uid_t/git_t decoding.
+ * Fixed potential out-of-bounds read issues in getdents/getdents64 decoders.
+ * Fixed potential open flags truncation on some architectures.
+ * Fixed decoding of struct ifreq.ifr_name.
+ * Fixed decoding of SIOCSIFNAME ioctl command.
+ * Fixed decoding of RENAME_* renameat2 flags.
+ * Fixed decoding of UTIME_NOW/UTIME_OMIT timeval structures.
+ * Fixed decoding of indirect ipc subcalls on some architectures.
+ * Fixed decoding of fanotify_mark syscall on 32-bit architectures.
+ * Fixed decoding of 32-bit stat structures on 64-bit architectures.
+ * Fixed decoding of 32-bit struct cmsghdr on 64-bit architectures.
+ * Fixed decoding of 32-bit preadv/pwritev offset on 64-bit architectures.
+ * Fixed decoding of sigreturn/rt_sigreturn signal mask on ia64, ppc, ppc64,
+ sparc, sparc64, mips, and s390.
+ * Fixed instruction pointer output (-i option) on architectures that support
+ several personalities.
+ * Fixed behaviour of "-e read=set" and "-e write=set" when read and write
+ sets intersect.
+ * Fixed build on systems where struct sigaction has no sa_restorer member.
+ * Fixed build with uclibc and musl libc.
+
+* Portability
+ * Linux kernel >= 2.5.46 is required.
+ Older versions without a decent PTRACE_SETOPTIONS support will not work.
+ * On mips, linux kernel >= 2.6.15 is required.
+ Older versions without a decent PTRACE_GETREGS support will not work.
+ * On s390 and s390x, linux kernel >= 2.6.27 is required.
+ Older versions without a decent PTRACE_GETREGSET support will not work.
+
+Noteworthy changes in release 4.9 (2014-08-15)
+==============================================
+
+* Changes in behavior
+ * Disabled OABI support on ARM EABI systems by default,
+ added --enable-arm-oabi option to enable it at configure time.
+
+* Improvements
+ * Added experimental -k option to print stack trace after each traced syscall.
+ * Added -w option to produce stats on syscall latency.
+ (addresses Debian bug #457497).
+ * Added ARC architecture support.
+ * Added PTRACE_GETREGS API support on PowerPC.
+ * Enhanced Bionic libc and musl libc support.
+ * Enhanced tracing of x86 personality processes on x86_64 and x32.
+ * Enhanced tracing of ARM personality processes on AArch64.
+ * Enhanced 32/64bit personality detection on PowerPC.
+ * Implemented decoding of add_key, ioprio_get, ioprio_set, kexec_load, keyctl,
+ renameat2, and request_key syscalls.
+ * Robustified decoding of select, pselect, and io_submit syscalls.
+ * Enhanced decoding of delete_module, fanotify_init, fanotify_mark, fcntl,
+ setdomainname, sethostname, setns, and sync_file_range syscalls.
+ * Enhanced decoding of signal bitmasks.
+ * Enhanced decoding of file descriptors.
+ * Enhanced siginfo_t decoding.
+ * Enhanced PF_NETLINK decoding.
+ * Updated CLOCK_* constants
+ (addresses Fedora bug #1088455).
+ * Added new syscall entries to match Linux 3.16.
+
+* Bug fixes
+ * Added shmat and shmdt to the set of memory mapping related syscalls.
+ * Fixed detaching from stopped processes.
+ * Fixed fanotify_mark decoding on 32bit architectures.
+ * Fixed offset decoding in preadv and pwritev syscalls.
+ * Fixed select decoding for glibc in _FORTIFY_SOURCE mode.
+ * Fixed decoding of epoll_ctl syscall with EPOLL_CTL_DEL argument.
+ * Fixed build when <sys/ptrace.h> and <linux/ptrace.h> conflict
+ (addresses Fedora bug #993384).
+ * Miscellaneous corrections in the manual page.
+ (Addresses Debian bug #725987).
+
+Noteworthy changes in release 4.8 (2013-06-03)
+==============================================
+
+* Changes in behavior
+ * In case of normal strace termination, when the trace output is
+ redirected to a pipe, strace now closes it and waits for the pipe
+ process termination before exit.
+
+* Improvements
+ * Implemented tracing using PTRACE_SEIZE API (when available).
+ * Implemented more reliable PTRACE_GETREGSET-based process personality
+ detection on x86-64 and x32 (when available).
+ * Added -e trace=memory option for tracing memory mapping related syscalls.
+ * Documented -b option.
+ * Allowed exit status messages to be suppressed by giving -q option twice.
+ * Added AArch64 architecture support
+ (addresses Debian bug #693074 and Fedora bug #969858).
+ * Added support for OpenRISC 1000, Meta, and Xtensa architectures.
+ * Added tilegx personality support for Tile.
+ * Enhanced support of NOMMU architectures.
+ * Enhanced decoding of getdents, mmap, perf_event_open, ptrace, and
+ quotactl syscalls.
+ * Added new syscall entries to match Linux 3.9.
+ * Regenerated the list of common ioctl names from Linux 3.9.
+ * Updated the list of errno constants.
+ * Updated lists of AF_*, MADV_*, MAP_*, MSG_*, MS_*, PF_*, PR_*,
+ PTRACE_O_*, and TCP_* constants.
+ * Implemented decoding of UBI ioctls.
+ * Removed redundant "*32" ioctl names.
+
+* Bug fixes
+ * Fixed ERESTARTNOINTR leaking to userspace on ancient kernels
+ (addresses Fedora bug #659382).
+ * Fixed kernel release string parsing
+ (addresses Debian bug #702309).
+ * Fixed decoding of *xattr syscalls
+ (addresses Fedora bug #885233).
+ * Fixed handling of files with 64-bit inode numbers by 32-bit strace
+ (addresses Fedora bug #912790).
+ * Fixed tracing forks on SPARC.
+ * Fixed decoding of fadvise64, fallocate, ftruncate64, io_submit, pread,
+ preadv, pwrite, pwritev, readahead, sigaltstack, sync_file_range, sysctl,
+ and truncate64 syscalls.
+ * Fixed categories of multiple syscalls on most of supported architectures.
+ * Fixed decoding of non-native 32-bit personality recv[m]msg syscalls.
+ * Fixed decoding of multiple 32-bit personality syscalls on x32.
+ * Fixed decoding of long long syscall arguments on ARM, MIPS/o32, PowerPC,
+ S390x, and Tile architectures.
+ * Fixed semtimedop decoding on S390x.
+ * Fixed sram_alloc decoding on Blackfin.
+ * Fixed build when process_vm_readv is a stab.
+ * Fixed build with older versions of libaio.h.
+
+Noteworthy changes in release 4.7 (2012-05-02)
+==============================================
+
+* Changes in behavior
+ * strace no longer suspends waitpid until there is a child
+ for waitpid'ing process to collect status from.
+ * strace no longer detaches from a tracee which is supposed
+ to be going to die.
+ * strace now issues a new message: "+++ exited with EXITCODE +++"
+ which shows exact moment strace got exit notification,
+ analogous to existing "+++ killed by SIG +++" message.
+
+* Improvements
+ * Added x32 personality support (x86_64 architecture).
+ * Added -y and -P options to print file descriptor paths and
+ filter by those paths.
+ * Added -I option to control strace interactivity.
+ * Allowed -p option to take comma or whitespace-separated list of PIDs.
+ * Added strace_log_merge script helper to merge timestamped "strace -ff"
+ log files.
+ * Implemented decoding of clock_adjtime, get_robust_list, migrate_pages,
+ preadv, prlimit64, process_vm_readv, process_vm_writev, pwritev,
+ recvmmsg, recvmsg, rt_tgsigqueueinfo, sendmmsg, setns, set_robust_list,
+ sched_rr_get_interval, splice, syslog, tee and vmsplice syscalls.
+ * Enhanced decoding of capget, capset, getrlimit, flistxattr, io_submit,
+ listxattr, setrlimit and swapon syscalls.
+ * Implemented decoding of loop and mtd ioctls.
+ * Added syscall entries for new linux syscalls.
+ * Added syscall entries for direct socket system calls on powerpc.
+ * Updated the list of errno constants.
+ * Updated lists of MSG_*, STA_*, and TCP_* constants.
+ * Regenerated the list of ioctl names from Linux 3.3.
+ * Enhanced switching between processes with different personalities.
+ * Enhanced signals reporting by using short signal names.
+ * Made ERESTART* messages more descriptive.
+ * Made parsing of numbers from strings more robust.
+ * Added support for compat_statfs64 and statfs64.f_flags.
+ * Changed read of data blocks to use single process_vm_readv syscall
+ (when available) instead of several PTRACE_PEEKDATA operations.
+ * Changed read of registers on x86 and x86-64 to use single PTRACE_GETREGS
+ operation instead of several PTRACE_PEEKUSER operations.
+ * Applied various optimizations to make strace work faster.
+
+* Bug fixes
+ * Implemented proper handling of real SIGTRAPs on kernels supporting
+ PTRACE_O_TRACESYSGOOD.
+ (Addresses Fedora bug #162774).
+ * Fixed sockaddr_un.sun_path name in decoded output.
+ (Addresses Debian bug #554946).
+ * Fixed to avoid potential core file clobbering on exit.
+ (Addresses Debian bug #656398).
+ * Fixed a typo in documentation.
+ (Addresses Debian bug #653309).
+ * Fixed decoding of timer id returned by timer_create.
+ * Fixed epoll_create1, epoll_wait and epoll_pwait decoding.
+ * Fixed *at syscalls flags decoding.
+ * Fixed ARM EABI 64-bit syscall's arguments decoding.
+ * Fixed semtimedop decoding on s390.
+ * Fixed osf_sigprocmask decoding on alpha.
+ * Fixed ipc and socket subcall decoding on several architectures.
+ * Corrected syscall entries for epoll_pwait, epoll_create, epoll_ctl,
+ epoll_wait, mincore, mlockall, prctl, reboot, sendfile, sendfile64,
+ sendmsg, sgetmask, ssetmask, swapon, tgkill and tkill syscalls.
+ * Corrected io_* syscall entries on ARM.
+ * Fixed PID prefix printing in "strace -oLOG -ff -p1 -p2 -p3" case.
+ * Fixed logging of unfinished lines in "strace -oLOG -ff" case.
+ * Fixed build when libaio-devel is not available.
+ * Fixed configure checks for PTRACE_* constants.
+ * Fixed compilation warnings remained on several architectures.
+
+* Portability
+ * Removed all non-Linux code. After years of neglect, that dead code
+ just hampered further strace development.
+ * Linux kernel >= 2.6.18 is recommended. Older versions might still
+ work but they haven't been thoroughly tested with this release.
+
+Noteworthy changes in release 4.6 (2011-03-15)
+==============================================
+
+* Changes in behavior
+ * Print diagnostic information about changes in personality mode to
+ standard error instead of standard output.
+
+* Improvements
+ * Implemented a new method of following clone, fork, and vfork
+ syscalls using the Linux kernel's explicit facilities for tracing
+ creation of threads and child processes.
+ * Implemented CLONE_PARENT and CLONE_UNTRACED flags handling.
+ * Implemented decoding of TLS syscalls on m68k.
+ * Implemented biarch support on powerpc64.
+ * Implemented biarch support for getrlimit() and setrlimit().
+ * Implemented decoding of struct ucred in getsockopt SO_PEERCRED.
+ * Implemented SOL_SCTP socket options decoding.
+ * Added HDIO_* ioctl names.
+ (Addresses Debian bug #450953).
+ * Added LOOP_* ioctl names.
+ * Updated lists of CLOCK_*, CLONE_*, MS_*, and SOL_* constants
+ to match Linux 2.6.37.
+ * Updated the list of IPPROTO_* constants to match netinet/in.h.
+ * Implemented decoding of HDIO_* and BLK* ioctls.
+ * Added MicroBlaze architecture support.
+ * Added new syscall entries to match Linux 2.6.37.
+ * Regenerated list of ioctl names from Linux 2.6.37.
+ * Enhanced signal notification decoding.
+ * Documented -C and -D options.
+
+* Bug fixes
+ * Fixed fetching syscall arguments on m68k.
+ * Fixed an error when judging whether a process has children.
+ * Fixed get/set_robust_list syscall numbers for powerpc.
+ * Fixed a corner case in printing clone flags.
+ * Fixed cross-compiling issues.
+ * Fixed build issues on powerpc64, SH and SPARC.
+ * Fixed syscall flags of fstatat*, mmap, mmap2, fadvise64*, swapoff,
+ fgetxattr, flistxattr, fremovexattr, epoll_create, fallocate,
+ fanotify_init, and fanotify_mark syscalls.
+ * Fixed decoding of get[ug]id, gete[ug]id and setfs[ug]id return values.
+ * Fixed biarch support in IO dumping.
+ * Fixed raw exit_group decoding.
+ * Fixed decoding of file descriptors on 64-bit architectures.
+ * Fixed a corner case in waitpid handling.
+ (Addresses Red Hat bug #663547).
+ * Fixed stat64 decoding on mips
+ (Addresses Debian bug #599028).
+ * Fixed misleading italics in the manual page.
+ (Addresses Debian bug #589323).
+
+Noteworthy changes in release 4.5.20 (2010-04-13)
+=================================================
+
+* Improvements
+ * Implemented decoding of new linux syscalls: inotify_init1, recvmmsg.
+ * Implemented basic decoding of new linux syscalls: preadv, pwritev,
+ rt_tgsigqueueinfo, perf_event_open.
+ * Enhanced decoding of recently added syscalls on non-x86 architectures
+ by replacing a bare decoder with elaborate parsers enabled earlier
+ for x86/x86-64.
+ * Implemented -C option to combine regular and -c output.
+ (Addresses Debian bug #466196)
+ * Enhanced decoding of mbind and mremap syscalls.
+ * Enhanced SOL_PACKET socket options decoding.
+ * Regenerated list of ioctl names from linux 2.6.33.
+ * Added TILE architecture support.
+
+* Bug fixes
+ * Fixed build with Linux kernel headers 2.6.32-rc5+.
+ (Addresses Debian bug #560516 and Fedora bug #539044)
+ * Fixed build on mips.
+ * Fixed handling of Linux systems without struct statfs64.
+ * Fixed reporting signal mask by sigreturn on powerpc.
+ * Fixed potential stack buffer overflow in select decoder.
+ (Addresses Fedora bug #556678)
+ * Corrected msgsnd indirect ipccall decoding.
+ * Corrected decoding of 64bit syscalls.
+ (Addresses Debian bug #570603)
+ * Corrected getsockopt decoding on architectures where
+ sizeof(long) > sizeof(int).
+ (Addresses Debian bug #494844)
+ * Corrected decoding of epoll_pwait.
+ (Addresses Debian bug #513014)
+ * Corrected handling of killed threads.
+
+Noteworthy changes in release 4.5.19 (2009-10-21)
+=================================================
+
+* Changes in behavior
+ * When command exits, strace now exits with the same exit status.
+ If command is terminated by a signal, strace terminates itself
+ with the same signal, so that strace can be used as a wrapper
+ process transparent to the invoking parent process.
+ When using -p option, the exit status of strace is zero unless
+ there was an unexpected error in doing the tracing.
+ (Addresses Fedora bug #105371 and Debian bug #37665)
+
+* Improvements
+ * Implemented decoding of new Linux syscalls: accept4, dup3,
+ epoll_create1, eventfd2, inotify_init1, pipe2, signalfd4.
+ * Implemented decoding of socket type flags introduced in Linux 2.6.27.
+ * Implemented decoding of accept4 socketcall.
+ * Enhanced prctl decoding.
+ * Enhanced nanosleep decoding.
+ * Enhanced ptrace decoding.
+ * Enhanced futex decoding.
+ * Enhanced CAP_* decoding.
+ * Enhanced SIOCS* ioctls decoding.
+ * Enhanced fcntl F_* flags decoding.
+ * Enhanced semop/semtimedop decoding.
+ * Updated ARM architecture support.
+ * Added Blackfin architecture support.
+ * Added AVR32 architecture support.
+ * Added CRIS architecture support.
+ * Made strace detect when traced process suddenly disappeared.
+
+* Bug fixes
+ * Fixed syscall numbers for tee and sync_file_range.
+ (Addresses Debian bug #503124)
+ * Fixed several bugs in strings decoder, including potential heap
+ memory corruption.
+ (Addresses Fedora bugs #470529, #478324 and #511035)
+ * Marked sendfile(2) as a network syscall.
+ (Addresses Debian bug #509499)
+ * Fixed accept(2) decoding.
+ (Addresses Debian bug #507573)
+ * Fixed sigtimedwait(2) decoding.
+ * Fixed build on ARM EABI.
+ (Addresses Debian bugs #520084 and #535564, and Fedora bug #507576)
+ * Fixed display of 32-bit fcntl(F_SETLK) on 64-bit architectures.
+ (Addresses Red Hat bug #471169)
+ * Fixed display of 32-bit argv array on 64-bit architectures.
+ (Addresses Fedora bug #519480)
+ * Fixed display of 32-bit struct sigaction on 64-bit architectures.
+ * Fixed HPPA architecture support.
+ (Addresses Debian bugs #437928 and #546619)
+
+Changes in 4.5.18
+==============
+* Bug fixes.
+* Support new Linux/PPC system call subpage_prot and PROT_SAO flag.
+* In sigaction system call, display sa_flags value along with SIG_DFL/SIG_IGN.
+
+Changes in 4.5.17
+==============
+* Many bug fixes.
+* -F is now deprecated, -f has traced vfork too on Linux for a long time now.
+* Print O_CLOEXEC, MSG_CMSG_CLOEXEC flag bits.
+* Improved output for prctl system call on Linux.
+* Improved support for Linux/ARM.
+* SA_NOMASK is now spelled SA_NODEFER, and SA_ONESHOT is spelled SA_RESETHAND.
+
+Changes in 4.5.16
+==============
+* Bug fixes.
+* Improved output for delete_module, futex, and mbind system calls on Linux.
+* Improved output for SG_IO ioctls on Linux.
+* Support new Linux system calls move_pages, utimensat, signalfd, timerfd,
+ eventfd, getcpu, epoll_pwait.
+
+Changes in 4.5.15
+==============
+* Bug fixes.
+* Several biarch improvements.
+* Improved output for adjtimex, sysctl, quotactl, mount, umount.
+* Support new Linux system calls *at, inotify*, pselect6, ppoll and unshare.
+
+Changes in 4.5.14
+==============
+* Bug fixes.
+* Accept numeric system calls in -e.
+
+Changes in 4.5.13
+==============
+* Bug fixes.
+* Introduce "-e trace=desc".
+
+Changes in 4.5.12
+==============
+* Bug fixes.
+* Better x86-64 support for IA32 processes.
+* Update PowerPC system calls.
+* Better printing for Linux aio system calls.
+
+Changes in 4.5.11
+==============
+* Quick fix release for build issues.
+* One fix for Linux/ARM system call table.
+
+Changes in 4.5.10
+==============
+* Bug fixes.
+* Print fault address for SIGSEGV/SIGBUS signals when available.
+
Changes in 4.5.9
==============
* Bug fixes.
projects / strace / blobdiff