Noteworthy changes in release ?.?? (????-??-??)
===============================================
+* Improvements
+ * Implemented decoding of netlink descriptor attributes as file descriptors.
+ * Enhanced decoding of getsockopt and setsockopt syscalls for SOL_NETLINK
+ level.
+ * Updated lists of MSG_* and SHM_* constants.
+
+Noteworthy changes in release 4.20 (2017-11-13)
+===============================================
+
+* Improvements
+ * Implemented decoding of NETLINK_NETFILTER netlink message types and flags.
+ * Implemented decoding of SECCOMP_GET_ACTION_AVAIL operation of seccomp
+ syscall.
+ * Updated lists of ARPHRD_*, BPF_*, ETH_P_*, LOOP_*, MADV_*,
+ MEMBARRIER_CMD_*, MFD_*, SECCOMP_*, SO_*, SOL_*, TCP_*, and UFFD_FEATURE_*
+ constants.
+ * Added decoding of statx syscall on hppa.
+ * Updated lists of ioctl commands from Linux 4.14.
+
+* Bug fixes
+ * Fixed powerpc personality support on powerpc64.
+
+Noteworthy changes in release 4.19 (2017-09-05)
+===============================================
+
+* Changes in behaviour
+ * Changed formatting of personality names on tile architecture in order
+ to make it in line with other multi-personality architectures.
+ * Changed field output order in struct v4l2_requestbuffers to improve in/out
+ field formatting.
+ * Changed handling of multiple signal= specifications in an injection
+ expression: multiple specification now leads to error instead of implicit
+ usage the last specification.
+
+* Improvements
+ * Enhanced decoding of optlen argument of getsockopt syscall.
+ * Enhanced decoding of SO_LINGER option of getsockopt and setsockopt syscalls.
+ * Enhanced decoding of SO_PEERCRED option of getsockopt syscall.
+ * Enhanced decoding of IP_ADD_MEMBERSHIP, IP_DROP_MEMBERSHIP,
+ IPV6_ADD_MEMBERSHIP, IPV6_DROP_MEMBERSHIP, IPV6_JOIN_ANYCAST,
+ IPV6_LEAVE_ANYCAST, MCAST_JOIN_GROUP, and MCAST_LEAVE_GROUP options
+ of setsockopt syscall.
+ * Enhanced decoding of KEYCTL_DH_COMPUTE operation of keyctl syscall
+ (KDF parameters decoding).
+ * Implemented decoding of KEYCTL_RESTRICT_KEYRING operation of keyctl syscall.
+ * Enhanced decoding of UFFDIO_API ioctl command.
+ * Enhanced decoding of BPF_PROG_LOAD, BPF_MAP_CREATE, BPF_MAP_LOOKUP_ELEM,
+ and BPF_MAP_GET_NEXT_KEY commands of bpf syscall.
+ * Implemented decoding of linux socket filter programs specified
+ for SO_ATTACH_FILTER and SO_ATTACH_REUSEPORT_CBPF socket options.
+ * Implemented decoding of inet_diag_req_v2, inet_diag_req_compat,
+ packet_diag_msg, and smc_diag_msg netlink attributes of NETLINK_SOCK_DIAG.
+ * Implemented NETLINK_SELINUX protocol specific decoding.
+ * Implemented decoding of netlink message ack flags.
+ * Implemented decoding of nlmsgerr netlink attributes.
+ * Implemented basic protocol specific decoding of NETLINK_CRYPTO.
+ * Implemented decoding of crypto_user_alg netlink attributes
+ of NETLINK_CRYPTO.
+ * Implemented basic protocol specific decoding of addr, addrlabel, dcb, link,
+ mdb, neigh, neightbl, netconf, nsid, route, rule, tc, and tca messages
+ of NETLINK_ROUTE.
+ * Implemented decoding of NETLINK_KOBJECT_UEVENT messages.
+ * Improved handling of unexpected tracees (the ones that cloned with
+ CLONE_PARENT/CLONE_PTRACE or called PTRACE_TRACEME on themselves): they
+ are now PTRACE_DETACH'ed instead of PTRACE_CONT'ed.
+ * Updated lists of BPF_*, KEY_*, RWF_*, SCM_*, SO_*, and *_MAGIC constants.
+ * Added decoding of arch_prctl syscall on x86.
+ * Added decoding of seccomp, bpf, userfaultfd, membarrier, mlock2,
+ copy_file_range, preadv2, pwritev2, and statx on alpha.
+ * Added decoding of statx syscall on microblaze.
+ * Added decoding of s390_guarded_storage syscall on s390.
+ * Updated lists of ioctl commands from Linux 4.13.
+ * Enhanced manual page.
+
+* Bug fixes
+ * Fixed printing of group_req structure on non-native personalities.
+ * Fixed output formatting of blkpg_ioctl_arg, dm_name_list, and iocb
+ structures.
+ * Fixed formatting of nul-terminated strings which have kernel-imposed size
+ limit.
+ * Fixed printing of paths that hit PATM_MAX limit in order to match kernel's
+ behaviour.
+ * Fixed build warnings on Android mips64.
+ * Fixed unused function "is_negated_errno" build warning when built
+ with clang.
+ * Fixed syscall number and arguments retrieval behaviour on sparc64 and
+ mips o32 after prctl(PR_SET_DUMPABLE, 0) makes PTRACE_PEEKTEXT impossible
+ to use if Linux kernel has commit v4.10-rc1~114^2~2.
+ * Fixed path tracing for execveat, symlink, symlinkat, inotify_add_watch,
+ and inotify_init syscalls.
+ * Fixed personality switch printing on sparc64 and risc-v.
+
+Noteworthy changes in release 4.18 (2017-07-05)
+===============================================
+
+* Improvements
+ * Implemented decoding of SCM_TIMESTAMP* control messages.
+ * Implemented decoding of netlink NLMSG_DONE messages.
+ * Implemented decoding of netlink generic nlmsg_type and nlmsg_flags.
+ * Implemented decoding of NETLINK_AUDIT, NETLINK_NETFILTER, NETLINK_ROUTE,
+ NETLINK_SELINUX, NETLINK_SOCK_DIAG, and NETLINK_XFRM message types.
+ * Implemented decoding of NETLINK_GENERIC protocol families.
+ * Implemented basic protocol specific decoding of AF_INET, AF_INET6,
+ AF_NETLINK, AF_PACKET, AF_SMC, and AF_UNIX messages of NETLINK_SOCK_DIAG.
+ * Implemented basic decoding of netlink attributes.
+ * Implemented basic protocol specific decoding of AF_INET, AF_NETLINK,
+ AF_PACKET, AF_SMC, and AF_UNIX netlink attributes of NETLINK_SOCK_DIAG.
+ * Implemented decoding of inet_diag_msg, netlink_diag_msg, and unix_diag_msg
+ netlink attributes of NETLINK_SOCK_DIAG.
+ * Updated lists of ARPHRD_*, KEYCTL_*, NDIAG_SHOW_*, RTM_*, SCM_*, SCTP_*,
+ SO_*, V4L2_*, and prctl ARCH_* constants.
+ * Updated lists of ioctl commands from Linux 4.12.
+
+* Bug fixes
+ * In interactive mode (-I2), those signals that were blocked at startup
+ will remain blocked for the whole period of strace execution.
+ * strace no longer resets SIGCHLD handler in tracees to the default action.
+ * When traced command is terminated by a blocked signal, strace unblocks
+ that signal to ensure its own termination with the same signal.
+ * Fixed corner cases in decoding of old sigaction syscall.
+ * Fixed build with old kernel headers on mips.
+ * Fixed build on aarch64 and tile with glibc >= 2.26.
+ * Fixed build on arc and nios2.
+
+Noteworthy changes in release 4.17 (2017-05-24)
+===============================================
+
* Changes in command line syntax
* Syscall classes specified in -e trace= option now have % prefix (like
-e trace=%process). Old style class names without leading % are still
* Improvements
* Optimized syscall filtering.
+ * Improved representation of timestamps.
* Enhanced decoding of sched_setattr syscall.
+ * Added -e trace=%stat option for tracing variants of stat syscall.
+ * Added -e trace=%lstat option for tracing variants of lstat syscall.
+ * Added -e trace=%fstat option for tracing variants of fstat and fstatat
+ syscalls.
+ * Added -e trace=%%stat option for tracing syscalls used for querying file
+ status information (stat, lstat, fstat, fstatat, statx, and their
+ variations).
* Added -e trace=%statfs option for tracing statfs, statfs64 and statvfs
syscalls.
* Added -e trace=%fstatfs option for tracing fstatfs, fstatfs64 and fstatvfs
system statistics information (statfs-like, fstatfs-like and ustat).
* Added -e trace=/regex option for filtering syscalls using regular
expressions.
+ * Added support for prepending of question mark before syscall qualification
+ in -e trace expressions in order to suppress error in case no syscalls
+ matched the provided qualification.
* Implemented decoding of signal mask in rt_sigreturn syscall on alpha, arc,
arm, avr32, bfin, cris, hppa, m68k, metag, microblaze, mips, nios2, or1k,
powerpc, powerpc64, riscv, sh, sh64, sparc, sparc64, tile, x86, and xtensa
* Implemented decoding of statx syscall.
* Implemented decoding of NS_* ioctl commands.
* Implemented decoding of the remaining V4L2_BUF_TYPE_* types.
+ * Implemented decoding of VIDIOC_[SG]_TUNER ioctl commands.
* Implemented decoding of NLMSG_ERROR netlink messages.
+ * Improved decoding of BPF_PROG_ATTACH command of bpf syscall.
+ * Improved decoding of misplaced parts in DM_* ioctl commands.
* Updated lists of ioctl commands from Linux 4.11.
* Bug fixes
* Fixed decoding of flags argument of preadv2 and pwritev2 syscalls on x32.
* Fixed the number of arguments and tracing flags of alpha specific syscalls.
+ * Fixed decoding of old sigsuspend syscall on alpha, cris, mips, powerpc,
+ powerpc64, sh, sh64, sparc, and sparc64.
+ * Fixed decoding of sgetmask and ssetmask syscalls on 64-bit architectures.
* Fixed decoding of netlink messages received within struct msghdr.
+ * Worked around a bug in miscompiled aarch64 kernels leading to the 3rd
+ argument of sched_getattr syscall being not quite 32-bit.
+ * Fixed corner cases of printing inaccessible times argument of utimes
+ and futimesat syscalls.
Noteworthy changes in release 4.16 (2017-02-14)
===============================================
==============
* Fix Linux/ia64 support, looks like someone renamed a few things on us
* Fix the ioctl setup for Linux, turned out it did not really work.
- Improve the ioctl extracter as well so we decode some more ones.
+ Improve the ioctl extractor as well so we decode some more ones.
Changes in 4.3.1
================
===========================
* non-ascii strings can be optionally printed entirely in hex
-* the output format is readable when mutiple processes are generating output
+* the output format is readable when multiple processes are generating output
* exit values are printed in an alignment column
* is is possible to suppress messages about attaching and detaching
* various tracing features can be enabled on a per syscall/signal/desc basis
projects / strace / blobdiff