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 * SourceForge git repository (https://sourceforge.net/p/strace/code/ci/master/tree/) is no longer maintained.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.