Noteworthy changes in strace 5.13 (2021-07-18)

==============================================

* Improvements
  * Print netlink data in a more structured way.
  * Implemented decoding of NT_PRSTATUS and NT_FPREGSET regsets
    of PTRACE_GETREGSET and PTRACE_SETREGSET requests.
  * Implemented decoding of regs argument of PTRACE_GETREGS, PTRACE_GETREGS64,
    PTRACE_SETREGS, PTRACE_SETREGS64, PTRACE_GETFPREGS, and PTRACE_SETFPREGS
    requests.
  * Implemented powerpc System Call Vectored ABI support.
  * Implemented decoding of landlock_add_rule, landlock_create_ruleset,
    and landlock_restrict_self syscalls introduced in Linux 5.13.
  * Enhanced decoding of perf_event_open syscall.
  * Updated lists of BPF_*, IORING_*, KEXEC_*, KEY_*, KVM_*, NT_*, PR_*,
    PTRACE_*, RTM_*, RTPROT_*, TRAP_*, UFFD_*, UFFDIO_*, and V4L2_* constants.
  * Updated lists of ioctl commands from Linux 5.13.

* Portability
  * On powerpc and powerpc64, linux kernel >= 2.6.23 is required.
    Older versions without a decent PTRACE_GETREGS support will not work.

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

* Alyssa Ross
* Deborah Brouwer
* Dmitry V. Levin
* Eugene Syromyatnikov
* Gleb Fotengauer-Malinovskiy
* Srikavin Ramkumar

Please refer to the CREDITS file for the full list of strace contributors.

Noteworthy changes in strace 5.12 (2021-04-26)

==============================================

* Improvements
  * Implemented --secontext[=full] option to display SELinux contexts.
  * Implemented decoding of mount_setattr syscall introduced in Linux 5.12.
  * Updated decoding of IFLA_BRPORT_* netlink attributes to match Linux 5.12.
  * Updated lists of DEVCONF_*, IORING_*, KVM_*, MPOL_*, MTD_*, NFT_MSG_*,
    RESOLVE_*, RTM_*, ST_*, and V4L2_* constants.
  * Updated lists of ioctl commands from Linux 5.12.

* Bug fixes
  * Fixed build using bionic libc.

* Portability
  * Added binutils 2.36 support to --enable-mpers builds.

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

* Alyssa Ross
* Baruch Siach
* Deborah Brouwer
* Dmitry V. Levin
* Gleb Fotengauer-Malinovskiy
* Renaud Métrich
* Vineet Gupta
* наб

Please refer to the CREDITS file for the full list of strace contributors.

Noteworthy changes in strace 5.11 (2021-02-17)

==============================================

* Improvements
  * Implemented poke injection (--inject=SET:poke_enter= and
    --inject=SET:poke_exit= options).
  * Implemented decoding of epoll_pwait2 syscall introduced in Linux 5.11.
  * Implemented decoding of GPIO_* ioctl commands.
  * Implemented decoding of FS_IOC_FS[GS]ETXATTR, FS_IOC_[GS]ETFLAGS,
    and FS_IOC32_[GS]ETFLAGS ioctl commands.
  * Implemented decoding of SIOCADDMULTI, SIOCDELMULTI, SIOCGIFENCAP,
    SIOCOUTQNSD, SIOCSIFENCAP, and SIOCSIFHWBROADCAST ioctl commands.
  * Implemented decoding of UBI_IOCRPEB and UBI_IOCSPEB ioctl commands.
  * Implemented decoding of V4L2_BUF_TYPE_META_CAPTURE,
    V4L2_BUF_TYPE_META_OUTPUT, and VIDIOC_QUERY_EXT_CTRL ioctl commands.
  * Updated lists of BPF_*, BTRFS_*, CLOSE_RANGE_*, ETH_*, IORING_*, KVM_*,
    PR_*, PTRACE_*, RTA_*, RTAX_*, RTM_*, RTNH_*, SCTP_*, SO_*, SYS_*, UFFD_*,
    and V4L2_* constants.
  * Updated lists of ioctl commands from Linux 5.11.

* Bug fixes
  * Fixed decoding of SIOCGIFINDEX, SIOCBRADDIF, and SIOCBRDELIF ioctl commands.
  * Fixed decoding of FIO[GS]ETOWN, SIOC[GS]PGRP, and SIOCATMARK ioctl commands
    on alpha, mips, sh, and xtensa architectures.
  * Fixed fork--pidns-translation test on sparc and sparc64.
  * Fixed build on hppa with uapi headers from Linux >= 5.10.

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

* Dmitry V. Levin
* Elvira Khabirova
* Eugene Syromyatnikov
* Gleb Fotengauer-Malinovskiy
* Kent Gibson
* Philippe De Muyter
* Sven Schnelle

Please refer to the CREDITS file for the full list of strace contributors.

Noteworthy changes in strace 5.10 (2020-12-14)

==============================================

* Improvements
  * libdw-based stack tracing is now enabled for non-native personalities.
  * Implemented decoding of process_madvise syscall introduced in Linux 5.10.
  * Updated decoding of pidfd_open syscall to match Linux 5.10.
  * Updated decoding of membarrier syscall to match Linux 5.10.
  * Updated lists of ALG_*, BPF_*, INET_DIAG_*, IORING_*, KEY_*, KVM_*, MDBA_*,
    MEMBARRIER_CMD_*, MS_*, NLMSGERR_*, NT_*, STATX_*, SEGV_*, and V4L2_*
    constants.
  * Updated lists of ioctl commands from Linux 5.10.

* Bug fixes
  * Added clock_gettime64, clock_settime64, clock_adjtime64, and
    lock_getres_time64 syscalls to %clock trace class.

* Portability
  * Implemented workarounds for -Wall regressions in Red Hat gcc 11.0.0-0.

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

* Dmitry V. Levin
* Elvira Khabirova
* Eugene Syromyatnikov
* Gleb Fotengauer-Malinovskiy
* Khem Raj
* Renaud Métrich
* Sven Schnelle

Please refer to the CREDITS file for the full list of strace contributors.

Noteworthy changes in strace 5.9 (2020-09-24)

=============================================

* Improvements
  * Added -n/--syscall-number option for printing syscall numbers.
  * Added --pidns-translation option for PID namespace translation (addresses
    Fedora bug #1035433).
  * Implemented decoding of close_range syscall.
  * Implemented decoding of TEE_* ioctl commands.
  * Implemented decoding of struct msginfo argument of IPC_INFO
    and MSG_INFO msgctl syscall commands.
  * Implemented decoding of struct msqid_ds argument of MSG_STAT
    and MSG_STAT_ANY msgctl syscall commands.
  * Implemented decoding of struct seminfo argument of IPC_INFO
    and SEM_INFO semctl syscall commands.
  * Implemented decoding of struct semid_ds argument of IPC_SET,
    IPC_STAT, SEM_STAT, and SEM_STAT_ANY semctl syscall commands.
  * Implemented decoding of struct shminfo argument of IPC_INFO
    shmctl syscall command.
  * Implemented decoding of struct shm_info argument of SHM_INFO
    shmctl syscall command.
  * Implemented decoding of struct shmid_ds argument of SHM_STAT
    and SHM_STAT_ANY shmctl syscall commands.
  * Updated lists of BPF_*, CAP_*, FAN_*, IFLA_*, INET_DIAG_REQ_*,
    IORING_FEAT_*, IP_*, IPV6_*, KVM_*, NDA_*, PTP_PEROUT_*, RTPROT_*,
    and V4L2_FMT_FLAG_* constants.
  * Updated lists of ioctl commands from Linux 5.9.

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

* Dmitry V. Levin
* Elvira Khabirova
* Eugene Syromyatnikov
* Gleb Fotengauer-Malinovskiy
* Ruinland ChuanTzu Tsai
* Tom Stellard
* Ákos Uzonyi

Please refer to the CREDITS file for the full list of strace contributors.

Noteworthy changes in strace 5.8 (2020-08-06)

=============================================

* Changes in behaviour
  * Modified %process class to contain system calls associated with
    process lifecycle (creation, exec, termination):
    kill, tkill, tgkill, pidfd_send_signal and rt_sigqueueinfo are added,
    arch_prctl and unshare are removed.

* Improvements
  * Implemented decoding of faccessat2 syscall.
  * Implemented decoding of LOOP_CONFIGURE ioctl command.
  * Updated decoding of io_uring_setup syscall to match Linux 5.8.
  * Updated lists of AUDIT_*, BPF_*, CAP_*, ETH_*, INET_DIAG_*, IORING_*,
    KEYCTL_*, KVM_*, LOOP_*, NDA_*, RTC_*, TCA_*, STATX_*, and *_MAGIC
    constants.
  * Updated lists of ioctl commands from Linux 5.8.

* Bug fixes
  * Added statx syscall to %fstat trace class.

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

* Chris Packham
* Dmitry V. Levin
* Eugene Syromyatnikov
* Gleb Fotengauer-Malinovskiy
* Janosch Frank
* Steve Langasek
* Sven Schnelle
* Ákos Uzonyi

Please refer to the CREDITS file for the full list of strace contributors.

Noteworthy changes in strace 5.7 (2020-06-01)

=============================================

* Improvements
  * Implemented interval specification in "when=" subexpression of syscall
    tampering expressions.
  * Added -e trace=%clock option for tracing syscalls reading of modifying
    system clocks.
  * Implemented decoding of BPF_LINK_CREATE and BPF_LINK_UPDATE bpf
    syscall commands.
  * Updated decoding of clone3 syscall to match Linux 5.7.
  * Updated lists of BPF_*, BTRFS_*, CLONE_*, FAN_*, IORING_*, KVM_*,
    LWTUNNEL_*, MREMAP_*, PERF_*, SECCOMP_*, UFFDIO_*, V4L2_*, and XDP_*
    constants.
  * Updated lists of ioctl commands from Linux 5.7.

* Bug fixes
  * Fixed decoding of getdents and getdents64 syscalls when they return
    a lot of directory entries.
  * Fixed pathtrace matching of openat2 syscall.
  * Fixed build on systems without fork.

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

* Alistair Francis
* Dmitry V. Levin
* Eugene Syromyatnikov
* Fabrice Fontaine
* Gleb Fotengauer-Malinovskiy
* Kemeng Shi
* Maxim Akhmedov
* Mike Gilbert
* Niklas Cathor
* Paul Chaignon
* Pierre Marsais
* Ákos Uzonyi

Please refer to the CREDITS file for the full list of strace contributors.

Noteworthy changes in strace 5.6 (2020-04-07)

=============================================

* Changes in behaviour
  * Messages about unknown tracees are now subject to the strace's quietness
    setting (-q/--quiet).
  * If -A option is provided without -o, or -S option without -c/-C, a warning
    about its uselessness is printed now.
  * The usage of --seccomp-bpf without -f has no effect now.

* Improvements
  * Every short option now has a long option alias, which also has enabled
    the following improvements:
    * Ability to use human-readable settings for -I/--interruptible,
      -D/--daemonize options.
    * Ability to silence specific messages using -e quiet/--quiet qualifier
      (an alias for the -q option), including those that couldn't be silenced
      previously (path resolution messages and "superseded by execve").
    * Ability to specify selected fd decoding features using
      -e decode-fds/--decode-fds qualifier (an alias for the -y option).
    * Ability to set precision for the absolute timestamp, relative timestamp,
      and syscall time output (using --absolute-timestamps,
      --relative-timestamps, and --syscall-times options, respectively).
  * Implemented ability to select the set of displayed columns in the call
    summary output (-U/--summary-columns option).
  * Implemented ability to sort on any summary column.
  * Implemented ability to show information about minimum and maximum call
    duration in the call summary output (addresses Debian bug #240945).
  * Implemented printing of PIDs associated with pidfds in -yy mode.
  * Implemented PTRACE_GETREGS API support on hppa, sh, sh64, and xtensa.
  * Improved performance of libdw-based stack traces printing by implementing
    a symbol-to-address cache.
  * Implemented decoding of openat2 and pidfd_getfd syscalls.
  * Enhanced io_uring_register, prctl, sched_getattr, and sched_setattr syscall
    decoding.
  * Implemented decoding of BPF_MAP_LOOKUP_BATCH,
    BPF_MAP_LOOKUP_AND_DELETE_BATCH, BPF_MAP_UPDATE_BATCH, and
    BPF_MAP_DELETE_BATCH bpf syscall commands.
  * Enhanced decoding of BPF_MAP_CREATE and BPF_PROG_ATTACH bpf syscall
    commands.
  * Enhanced decoding of RTC_VL_READ ioctl command.
  * Enhanced decoding of IFLA_* netlink attributes.
  * Implemented HIDIOCGRAWUNIQ() ioctl command number printing.
  * Wired up kexec_file_load syscall on hppa.
  * Updated lists of AUDIT_*, BPF_*, CLONE_*, GRND_*, IFLA_*, IORING_*,
    IPPROTO_*, KEY_*, KVM_*, RTM_F_*, SCHED_*, and *_MAGIC constants.
  * Updated lists of ioctl commands from Linux 5.6.

* Bug fixes
  * Fixed build on csky abiv1 architecture.
  * Various minor fixes in VIDIOC_* ioctl output formatting.
  * Fix printing of the size field for _IOC_NONE ioctl command numbers on sparc.

* Portability
  * On hppa, linux kernel >= 4.7 is required.
    On sh and sh64, linux kernel >= 2.6.28 is required.
    Older versions without a decent PTRACE_GETREGS support will not work.

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

* Alistair Francis
* Dmitry V. Levin
* Eugene Syromyatnikov
* Gleb Fotengauer-Malinovskiy
* Jann Horn
* Ma Jun
* Masatake YAMATO
* Paul Chaignon
* Philippe De Muyter

Please refer to the CREDITS file for the full list of strace contributors.

Noteworthy changes in strace 5.5 (2020-02-06)

=============================================

* Improvements
  * Added -e trace=%creds option for tracing syscalls related to process
    credentials.
  * Enhanced decoding of arch_prctl, keyctl, io_uring_register, io_uring_setup,
    and perf_event_open syscalls.
  * Enhanced decoding of BPF_PROG_LOAD bpf syscall command.
  * Updated decoding of clone3 syscall to match Linux 5.5.
  * Implemented decoding of TCA_ACT_FLAGS and TCA_STATS_PKT64 netlink
    attributes.
  * Updated lists of AUDIT_*, BPF_*, CLONE_*, KEY_*, KVM_*, PPC_PTRACE_*,
    SCTP_*, STATX_*, TIPC_*, V4L2_*, and *_MAGIC constants.
  * Updated lists of ioctl commands from Linux 5.5.
  * Enhanced manual page and "strace --help" output.

* Bug fixes
  * Fixed stack trace printing for early syscalls when strace is configured
    to use libdw backend for stack tracing (addresses Fedora bug #1788636).
  * Fixed stack trace caching when --seccomp-bpf option is specified.
  * Fixed potentially unaligned access in decoder of SO_TIMESTAMP*_NEW
    control messages.
  * Fixed decoding of NDA_LLADDR netlink neighbor table attribute.
  * Fixed build of mpers support when CFLAGS contains -flto.
  * Fixed build on no-MMU architectures.
  * Fixed build with glibc-2.31 and Linux kernel headers < 5.3.
  * Fixed tests for glibc-2.31.

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

* Andreas Schwab
* Andrey Zax
* Baruch Siach
* Chunmei Xu
* Dmitry V. Levin
* Eugene Syromyatnikov
* Gleb Fotengauer-Malinovskiy
* Jamal Hadi Salim
* Khem Raj
* Paul Chaignon
* Pavel Zhukov
* Quentin Monnet
* Rich Felker
* Thomas Deutschmann
* Vineet Gupta
* Vladimir D. Seleznev

Please refer to the CREDITS file for the full list of strace contributors.

Noteworthy changes in strace 5.4 (2019-11-28)

=============================================

* Improvements
  * Implemented -DD and -DDD options that move strace into a separate
    process group and session, respectively.
  * Enhanced seccomp-bpf tracee syscall filtering support by implementing
    new "binary match" BPF program generation strategy and automatically
    choosing the strategy that generates the shortest BPF program.
  * Implemented decoding of BPF_BTF_GET_NEXT_ID bpf syscall command.
  * Enhanced decoding of BPF_MAP_LOOKUP_ELEM bpf syscall command.
  * Implemented PTP_CLOCK_GETCAPS2, PTP_EXTTS_REQUEST2, PTP_PEROUT_REQUEST2,
    PTP_ENABLE_PPS2, and PTP_SYS_OFFSET2 ioctl decoding.
  * Updated lists of BPF_*, CAN_*, KEXEC_*, KVM_*, MADV_*, MSG_*, P_*, PR_*,
    PTP_*, SCTP_*, and V4L2_* constants.
  * Implemented ability to build ARM EABI mpers support using a separate
    compiler on aarch64.
  * Updated lists of ioctl commands from Linux 5.4.
  * Enhanced manual page.

* Bug fixes
  * Fixed -b execve when --seccomp-bpf option is specified.
  * Fixed decoding of BPF_PROG_LOAD bpf syscall command.
  * Fixed build on no-MMU architectures.
  * Fixed build on antique systems that do not provide necessary definitions
    of AUDIT_ARCH_* constants.

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

* Andreas Schwab
* Baruch Siach
* Dmitry V. Levin
* Elvira Khabirova
* Eugene Syromyatnikov
* Fanda Uchytil
* Gleb Fotengauer-Malinovskiy
* Paul Chaignon

Please refer to the CREDITS file for the full list of strace contributors.