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Noteworthy changes in release 4.23 (2018-06-14)
===============================================
* 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.
Bug: N/A
Test: strace -f date
Change-Id: I9eff306cca99b239815284a366315fb04686667a
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Noteworthy changes in release 4.22 (2018-04-05)
===============================================
* Changes in infrastructure
* The mailing list was moved to strace-devel@lists.strace.io.
* SourceForge git repository
(https://sourceforge.net/p/strace/code/ci/master/tree/) is no longer
maintained. Please use GitLab (https://gitlab.com/strace/strace/)
or GitHub (https://github.com/strace/strace/) repository instead.
* Changes in behaviour
* When printing string data, '8' and '9' following an octal escape sequence
no longer lead to unabbreviated octal escape sequence output, as they used
to do.
* Angle brackets are now printed as octal number escape sequences
in the output of paths associated with file descriptors.
* Data dump for write syscalls (-e write) is performed regardless
of successfulness of these syscall (addresses Debian bug #436284).
* -r and -t options are now affect output independently. Previously,
-r option led to ignoring of the -t option (addresses Debian bug #466195).
* Improvements
* Implemented delay injection (-e inject=SET:delay_enter= and
-e inject=SET:delay_exit= options).
* Added -A option for opening output files in append mode
(addresses Debian bug #528488).
* IPv6 addresses shown in socket information in -yy mode are now printed
in brackets.
* Enhanced decoding of bpf, prctl and ptrace syscalls.
* Enhanced decoding of BTRFS_IOC_INO_PATHS, BTRFS_IOC_LOGICAL_INO, and PTP_*
ioctl commands.
* Enhanced NETLINK_ROUTE protocol decoding.
* Updated lists of signal codes.
* Updated lists of BPF_*, BTN_*, ETH_P_*, INET_DIAG_BC_*, KEY_*, POLL*, RWF_*,
SCHED_FLAG_*, SCTP_* and error constants.
* Implemented block/character device number printing in -yy mode.
* Known pixel/SDR format names are printed as comments for pixelformat fields
in v4l2 structures.
* Enhanced decoding of kern_features syscall.
* Enhanced NETLINK_NETFILTER netlink protocol decoder.
* Optimized handling of large number of tracees.
* Improved wall clock time measurement in syscall count statistics
(-c -w option).
* Extended the range of allowed values in -e inject=...:retval= expression.
* Added i18n support.
* Updated lists of ioctl commands from Linux 4.16.
* Enhanced manual page.
* Bug fixes
* Fixed build on m68k.
* Fixed v4l2 pixelformat decoding on big-endian architectures.
* Fixed -O option.
Bug: N/A
Test: strace -f date
Change-Id: I41780dbf3262f9e2f72c825fc3c4c1be662bbbf5
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