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.