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v5.63e32da09 · ·
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(an alias for the -q option), including those that couldn't be silenced previously (path resolution messages and "superseded by execve").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.
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v5.5da2fa3bc · ·
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.
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v5.4bef61250 · ·
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.
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v5.3187016a6 · ·
Noteworthy changes in strace 5.3 (2019-09-25) ============================================= * Improvements * Implemented usage of seccomp-bpf for stopping tracees only for filtered syscalls. Use --seccomp-bpf option to enable. * Implemented decoding of pidfd_open and clone3 syscalls. * Enhanced decoding of io_cancel, io_submit, s390_sthyi, and syslog syscalls. * Enhanced decoding of NETLINK_ROUTE protocol. * Implemented decoding of UNIX_DIAG_UID netlink attribute. * Implemented decoding of WDIOC_* ioctl commands. * Enchanced syscall count statistics: overhead is now applied per-call, added ability for sorting on errors field. * Syscall delay injection and overhead values can now be supplied with time measure unit suffix and provided in IEEE 754 floating point format. * Updated lists of AUDIT_*, BPF_*, ETH_*, KEYCTL_*, KVM_*, MAP_*, SO_*, TCP_*, V4L2_*, XDP_*, and *_MAGIC constants. * Updated lists of ioctl commands from Linux 5.3. * Enhanced manual page. * Bug fixes * Fixed syscall tampering on arc, avr32, csky, ia64, m68k, metag, mips, nios2, or1k, riscv, s390, s390x, sparc, sparc64, and tile architectures when PTRACE_GET_SYSCALL_INFO is in use. * Fixed decoding of sockaddr_hci (AF_BLUETOOTH) addresses that lack hci_channel field. * Fixed evdev ioctl bitset decoding. * Fixed tests on alpha with Linux kernel headers 5.1+. * Portability * Removed support for decoding syscalls in range [1024...1079] on AArch64 architecture as this range has never been implemented in mainline kernel releases. 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: * Alexey Gladkov * Anatoly Pugachev * Bharath Vedartham * Chen Jingpiao * Dan Horák * Dmitry V. Levin * Eugene Syromyatnikov * Gleb Fotengauer-Malinovskiy * Jeremy Kerr * Paul Chaignon * Pierre Marsais * Rasmus Villemoes Please refer to the CREDITS file for the full list of strace contributors.
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v5.2dc03195e · ·
Noteworthy changes in strace 5.2 (2019-07-12) ============================================= * Improvements * Implemented syscall return status filtering with -e status=set option and its aliases: -z (limit syscall printing to successful syscalls only) and -Z (limit syscall printing to failed syscalls only). * Implemented decoding of open_tree, move_mount, fsopen, fsconfig, fsmount, and fspick syscalls. * Enhanced decoding of bpf, clone, inotify_init, mbind, and set_mempolicy syscalls. * Updated lists of AT_*, AUDIT_*, BPF_*, CLONE_*, ETH_*, KEY_*, KVM_*, MPOL_*, TIPC_*, and V4L2_* constants. * Updated lists of ioctl commands from Linux 5.2. * Bug fixes * Fixed syscall tampering on powerpc, powerpc64, sparc, and sparc64 when PTRACE_GET_SYSCALL_INFO is in use. * Fixed build with cutting-edge toolchain. 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: * Burkhard Kohl * Dmitry V. Levin * Eugene Syromyatnikov * Gleb Fotengauer-Malinovskiy * Masatake YAMATO * Michal Sekletar * Paul Chaignon * Zhibin Li Please refer to the CREDITS file for the full list of strace contributors.
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v5.1c42818bc · ·
Noteworthy changes in strace 5.1 (2019-05-22) ============================================= * Bug fixes * Fixed decoding of last two arguments of clone syscall on riscv. * Improvements * Added C-SKY architecture support. * Implemented decoding of SO_TIMESTAMP*_NEW control messages. * Implemented decoding of clock_gettime64, clock_settime64, clock_adjtime64, clock_getres_time64, clock_nanosleep_time64, timer_gettime64, timer_settime64, timerfd_gettime64, timerfd_settime64, utimensat_time64, pselect6_time64, ppoll_time64, io_pgetevents_time64, recvmmsg_time64, mq_timedsend_time64, mq_timedreceive_time64, semtimedop_time64, rt_sigtimedwait_time64, futex_time64, sched_rr_get_interval_time64, pidfd_send_signal, io_uring_setup, io_uring_enter, and io_uring_register syscalls. * Enhanced decoding of bpf syscall. * Wired up getegid, geteuid, getppid, io_pgetevents, statfs64, and fstatfs64 syscalls on alpha. * Wired up kexec_file_load and migrate_pages syscalls on arm. * Wired up io_pgetevents, perf_event_open, seccomp, and statx syscalls on ia64. * Wired up seccomp syscall on m68k. * Wired up statx syscall on sh. * Wired up pkey_mprotect, pkey_alloc, and pkey_free syscalls on alpha, hppa, ia64, m68k, s390, s390x, sh, sparc, and sparc64. * Wired up rseq syscall on alpha, hppa, ia64, m68k, sh, sparc, sparc64, and xtensa. * Wired up direct ipc syscalls on m68k, mips o32, powerpc, powerpc64, s390, s390x, sh, sparc, sparc64, and x86. * Updated lists of BPF_*, FAN_*, F_SEAL_*, IPV6_*, NT_*, PR_SPEC_*, SO_*, and V4L2_* constants. * Updated lists of ioctl commands from Linux 5.1. 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 * Eugene Syromyatnikov * Gleb Fotengauer-Malinovskiy * Guo Ren Please refer to the CREDITS file for the full list of strace contributors.
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v5.0d091f1a9 · ·
Noteworthy changes in strace 5.0 (2019-03-19) ============================================= * Changes in behavior * -D option now implies -I4: by default strace ignores SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGTERM, SIGTTIN, SIGTTOU, and SIGTSTP when -D option is used. * Diagnostic message is no longer printed if an attempt to restart a process has failed with ESRCH. (Addresses RHBZ bug #1662936.) * ASCII dump no longer tries to read the whole buffer at once. As result, it can fail with a diagnostic message after dumping only a part. Amount of preceding zeroes printed for offset is now chosen in a way to accommodate all the digits of all the offsets being printed. * Improvements * Changed the way tracees are handled: all pending tracees are now waited for before further processing, this improves fairness of tracee processing. (Addresses RHBZ bugs #478419, #526740, #851457, #1609318, #1610774, and maybe some others.) * Enhanced xlat styles support configured by -X option. * Enhanced decoding of bpf syscall. * Enhanced decoding of PTRACE_PEEKUSER and PTRACE_POKEUSER on hppa. * Enhanced pid formatting in strace-log-merge output. * Wired up kexec_file_load and rseq syscalls on aarch64, arc, metag, nios2, or1k, riscv, and tile architectures. * Updated lists of BPF_*, BTRFS_*, FAN_*, IFLA_*, KERN_*, KVM_CAP_*, NDA_*, NETNSA_*, NT_*, PR_*, REL_*, SECCOMP_*, SCTP_*, UDP_*, V4L2_*, and *_MAGIC constants. * Updated lists of ioctl commands from Linux 5.0. * Bug fixes * Fixed ordering of sockaddr_in6 fields. * Fixed strace-k test on alpha. * Fixed build on mips o32. * Fixed build on NOMMU architectures. * Fixed build in --with-libiberty=yes mode. * Fixed potential NULL dereference during printing of line continuation for syscalls that haven't been decoded. * Fixed strace-log-merge error diagnostics. 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 * DJ Delorie * Denys Vlasenko * Dmitry V. Levin * Eugene Syromyatnikov * Gleb Fotengauer-Malinovskiy * Jeff Law * Martin Lau * Shankara Pailoor * Tuan Hoang Please refer to the CREDITS file for the full list of strace contributors.
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v4.2627739ebc · ·
Noteworthy changes in strace 4.26 (2018-12-26) ============================================== * License * The test suite is now provided under the terms of the GNU General Public License version 2 or later. * All the rest of strace is now provided under the terms of the GNU Lesser General Public License version 2.1 or later. * Changes in behavior * If strace is interrupted by a signal it handles (currently one of HUP, INT, QUIT, PIPE, or TERM), strace terminates itself with this signal. * Improvements * Implemented obtainment of system call information using PTRACE_GET_SYSCALL_INFO ptrace API. * Implemented decoding of PTRACE_GET_SYSCALL_INFO ptrace request. * Implemented decoding of BLKGETZONESZ, BLKGETNRZONES, and RND* ioctl commands. * Enhanced xlat styles support configured by -X option. * Enhanced internet address formatting in structureless contexts. * Enhanced decoding of getsockopt SO_ERROR option. * Enhanced error diagnostics when the first exec fails. * Added %net as a short form of %network in syscall specifications. * Updated lists of ABS_*, BPF_*, FAN_*, IFA_*, IFLA_*, KVM_CAP_*, NETLINK_*, NTF_*, PR_SPEC_*, REL_*, SOL_*, TCA_*, and V4L2_* constants. * Updated lists of ioctl commands from Linux 4.20. * Enhanced manual page. * Bug fixes * Fixed "xlat_idx: Unexpected xlat value 0" warnings. * Fixed sthyi output format on s390. * Documented -X option in strace -h output. 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 * Dmitry Vyukov * Eugene Syromyatnikov * Gleb Fotengauer-Malinovskiy * Jamal Hadi Salim * Janosch Frank * Masatake YAMATO * Rasmus Villemoes * Shankara Pailoor Please refer to the CREDITS file for the full list of strace contributors.
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v4.25c12d2de1 · ·
Noteworthy changes in strace 4.25 (2018-10-30) ============================================== * Improvements * Implemented decoding of KVM_CHECK_EXTENSION and NBD_* ioctl commands. * Implemented decoding of SOL_XDP socket option names. * Implemented decoding of AF_PACKET protocols in socket syscall. * Implemented decoding of AF_AX25 and AF_X25 addresses, protocols, and options. * Implemented stack trace printing on receiving signals. * Enhanced xlat styles support configured by -X option. * Enhanced decoding of IFLA_*, NETCONFA_*, and SMC_DIAG_* netlink attributes. * Wired up io_pgetevents syscall on arm, sparc, and sparc64. * Updated lists of AF_*, AUDIT_*, BPF_*, IFLA_*, IN_*, IPSTATS_*, IPV4_DEVCONF_*, NT_*, SCTP_*, SO_*, SOCK_*, SOL_*, and V4L2_* constants. * Updated lists of ioctl commands from Linux 4.19. * Bug fixes * Fixed decoding of bit sets in evdev ioctl commands. * Fixed decoding of EVIOCGBIT(0, ...) ioctl commands. * Fixed test suite for the case when mlockall and unimplemented syscalls are explicitly disabled by a seccomp filter. 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 * Pierre Marsais * Zhibin Li Please refer to the CREDITS file for the full list of strace contributors.
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v4.24150655ca · ·
Noteworthy changes in strace 4.24 (2018-08-14) ============================================== * Improvements * Implemented decoding of kvm vcpu exit reason (-e kvm=vcpu option), requires Linux kernel version 4.16.0 or higher. * Implemented decoding of KVM_SET_CPUID2 and KVM_GET_*_CPUID ioctl commands. * Enhanced decoding of corner cases of SO_LINGER, SO_PEERCRED, and PACKET_STATISTICS getsockopt options. * Wired up io_pgetevents and rseq syscalls on hppa, microblaze, mips, powerpc, and s390. * Updated lists of AUDIT_*, BPF_*, IFA_*, IFLA_*, RTA_*, RTPROT_*, TCP_*, TRAP_*, and UDP_* constants. * Updated lists of ioctl commands from Linux 4.18. * Bug fixes * Fixed decoding of Q_XGETQSTAT on non-native personalities. * Fixed race condition in aio test. * Fixed build with Bionic libc. * Fixed build with glibc-2.28. * Fixed build in exotic systemd-nspawn based environments. * Fixed build on s390 with kernel headers that do not contain Linux commit v3.10-rc1~201^2~11. 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: * Chen Jingpiao * Dmitry V. Levin * Elliott Hughes * Eugene Syromyatnikov * Gleb Fotengauer-Malinovskiy * Masatake YAMATO * Pierre Marsais * Zhibin Li
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v4.239a7661cc · ·
NEWS for strace version 4.23 ============================ * Changes in behaviour * On x32 personality, 64-bit syscalls (such as readv) are now shown with "#64" suffix instead of "64:" prefix. Unlike the old names, these new names can be used in syscall qualification expressions. * Changed error number output format: error numbers are consistently printed as "-1 ECONST (Error description)" for known errors and as "-1 (errno 123)" for unknown errors, regardless of -e raw qualification settings. One can specify -X raw for displaying raw error numbers unconditionally. * Unfetchable addresses inside arrays are now printed as comments. * Obsolete IA-32 mode syscall names are no longer printed on ia64. * Improvements * Implemented libdw backend for -k option, configured at build time using --with-libdw option. Whether -k option is compiled is now configured at build time using --enable-stacktrace option. * Added -X option for configuring xlat output formatting (addresses Debian bug #692915). * Added support for personality designation ("64", "32", or "x32") to syscall qualifications in -e trace expressions. * Implemented injection of syscalls with no side effects as an alternative to injection of an invalid syscall (-e inject=SET:syscall= expression). * Improved support for reproducible builds (addresses Debian bug #896016). * Implemented decoding of BPF_PROG_QUERY and BPF_RAW_TRACEPOINT_OPEN bpf syscall commands. * Implemented decoding of INOTIFY_IOC_SETNEXTWD and PERF_EVENT_IOC_* ioctl commands. * Implemented decoding of PR_GET_SPECULATION_CTRL and PR_SET_SPECULATION_CTRL prctl syscall options. * Enhanced decoding of bpf, getsockopt, setsockopt, and socket syscalls. * Enhanced decoding of NETLINK_KOBJECT_UEVENT and NETLINK_ROUTE protocols. * Enhanced decoding of *_DIAG_MEMINFO netlink attributes. * Enhanced decoding of BTRFS_*, FS_IOC_*, SIOCGIFHWADDR, and SIOCSIFHWADDR ioctl commands. * Enhanced decoding of AF_BLUETOOTH socket addresses. * Implemented decoding of io_pgetevent syscall. * Wired up rseq syscall. * Updated lists of ADJ_*, BPF_*, BPF_F_*, BPF_PROG_TYPE_*, ETH_P_*, FPE_*, IFF_*, IPPROTO_*, MAP_*, MS_*, MSG_*, NETLINK_*, PACKET_*, PROT_*, SCTP_*, SECCOMP_FILTER_FLAG_*, SEGV_*, SEM_*, SHM_*, SW_*, V4L2_CID_*, V4L2_CTRL_CLASS_*, and V4L2_PIX_FMT_* constants. * Updated lists of ioctl commands from Linux 4.17. * Bug fixes * Fixed decoding of msgtyp argument of msgrcv syscall. * Fixed fallback definitions for F_*, MCL_*, MSG_ZEROCOPY, SI_*, and SOL_SOCKET constants. * Fixed -e trace=%pure expression on mips. 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: * Andre McCurdy * Chris Lamb * Dmitry V. Levin * Eugene Syromyatnikov * Gleb Fotengauer-Malinovskiy * Harsha Sharma * Mark Wielaard * Masatake YAMATO * Zhibin Li