1 Noteworthy changes in release 4.5.19
2 ====================================
5 * When command exits, strace now exits with the same exit status.
6 If command is terminated by a signal, strace terminates itself
7 with the same signal, so that strace can be used as a wrapper
8 process transparent to the invoking parent process.
9 When using -p option, the exit status of strace is zero unless
10 there was an unexpected error in doing the tracing.
11 (Addresses Fedora bug #105371 and Debian bug #37665)
14 * Implemented decoding of new Linux syscalls: accept4, dup3,
15 epoll_create1, eventfd2, inotify_init1, pipe2, signalfd4.
16 * Implemented decoding of socket type flags introduced in Linux 2.6.27.
17 * Implemented decoding of accept4 socketcall.
18 * Enhanced prctl decoding.
19 * Enhanced nanosleep decoding.
20 * Enhanced ptrace decoding.
21 * Enhanced futex decoding.
22 * Enhanced CAP_* decoding.
23 * Enhanced SIOCS* ioctls decoding.
24 * Enhanced fcntl F_* flags decoding.
25 * Updated ARM architecture support.
26 * Added Blackfin architecture support.
27 * Added AVR32 architecture support.
28 * Added CRIS architecture support.
29 * Made strace detect when traced process suddenly disappeared.
32 * Fixed syscall numbers for tee and sync_file_range.
33 (Addresses Debian bug #503124)
34 * Fixed several bugs in strings decoder, including potential heap
36 (Addresses Fedora bugs #470529, #478324 and #511035)
37 * Marked sendfile(2) as a network syscall.
38 (Addresses Debian bug #509499)
39 * Fixed accept(2) decoding.
40 * Fixed sigtimedwait(2) decoding.
41 * Fixed build on ARM EABI.
42 (Addresses Debian bugs #520084 and #535564, and Fedora bug #507576)
43 * Fixed display of 32-bit fcntl(F_SETLK) on 64-bit architectures.
44 (Addresses Red Hat bug #471169)
45 * Fixed display of 32-bit argv array on 64-bit architectures.
46 (Addresses Fedora bug #519480)
47 * Fixed display of 32-bit struct sigaction on 64-bit architectures.
48 * Fixed HPPA architecture support.
49 (Addresses Debian bugs #437928 and #546619)
54 * Support new Linux/PPC system call subpage_prot and PROT_SAO flag.
55 * In sigaction system call, display sa_flags value along with SIG_DFL/SIG_IGN.
60 * -F is now deprecated, -f has traced vfork too on Linux for a long time now.
61 * Print O_CLOEXEC, MSG_CMSG_CLOEXEC flag bits.
62 * Improved output for prctl system call on Linux.
63 * Improved support for Linux/ARM.
64 * SA_NOMASK is now spelled SA_NODEFER, and SA_ONESHOT is spelled SA_RESETHAND.
69 * Improved output for delete_module, futex, and mbind system calls on Linux.
70 * Improved output for SG_IO ioctls on Linux.
71 * Support new Linux system calls move_pages, utimensat, signalfd, timerfd,
72 eventfd, getcpu, epoll_pwait.
77 * Several biarch improvements.
78 * Improved output for adjtimex, sysctl, quotactl, mount, umount.
79 * Support new Linux system calls *at, inotify*, pselect6, ppoll and unshare.
84 * Accept numeric system calls in -e.
89 * Introduce "-e trace=desc".
94 * Better x86-64 support for IA32 processes.
95 * Update PowerPC system calls.
96 * Better printing for Linux aio system calls.
100 * Quick fix release for build issues.
101 * One fix for Linux/ARM system call table.
106 * Print fault address for SIGSEGV/SIGBUS signals when available.
111 * Improve socket ioctl printing.
112 * Update Linux/IA64 syscall list.
113 * Fix Linux/x86-64 syscall argument extraction for 32-bit processes.
114 * Improve mount flags printing.
115 * Support symbolic printing of x86_64 arch_prctl parameters.
120 * Update syscall tables for Alpha, ARM, HPPA.
121 * Support new Linux syscalls mbind, set_mempolicy, get_mempolicy, waitid.
122 * Support Linux syscalls fadvise64, fadvise64_64, and epoll_*.
123 * Improve ioctl command name matching.
124 * Print RTC_* ioctl structure contents.
125 * Support newer RLIMIT_* values.
126 * Print struct cmsghdr details in sendmsg.
131 * Print attribute values in *xattr system calls on Linux.
132 * Include pread and pwrite calls in -e read and -e write tracing.
133 * Update SO_* and IP_* value lists and add IPV6_* values for socket options.
134 * Print clock_t values symbolically in Linux clock_* system calls.
138 * Bug fixes, Linux ioctl updates.
139 * David Miller contributed support for Linux/SPARC64.
147 * Update Linux ioctl lists.
148 * Update PF_* and AF_* value lists.
149 * The 4.5.3 -p behavior for NPTL threads applies only under -f, and got fixed.
154 * On Linux using NPTL threads, -p will now attach to all threads in a process.
155 * Handle new mq_* system calls in Linux 2.6.6 and later.
160 * Report some new VM_* bit values on Linux.
161 * Better output for Linux sched_* system calls.
166 * Display multiple ioctl name matches on Linux.
170 * New port to AMD's x86-64 architecture. One strace binary can
171 handle both new x86-64 and old i386 processes.
172 * Fixed support for LFS64 calls.
173 * New switch -E to add/remove environment variables for the command.
174 * Merged s390/s390x port.
175 * Trace an unbounded number of processes.
176 * Handle numerous new system calls in Linux 2.5, and new threads semantics.
177 * Fixed bugs with attach/detach leaving things stopped.
178 * Fixed traced process seeing ECHILD despite live, traced children
179 in waitpid calls with WNOHANG.
180 * Stuart Menefy contributed a port to Linux/SH.
181 * Stephen Thomas contributed a port to Linux/SH64.
182 * Many other bug fixes.
186 * Fix Linux/ia64 support, looks like someone renamed a few things on us
187 * Fix the ioctl setup for Linux, turned out it did not really work.
188 Improve the ioctl extracter as well so we decode some more ones.
192 * compile fixes for Linux/mips
196 * Linux ia64 and hppa ports added
197 * The usual Linux syscall updates (includes 32bit uid/gid support),
198 * Linux ioctl list updated
199 * Support IPv6 scope ids
200 * FreeBSD/i386 port added
201 * UnixWare and Solaris updates
202 * Better support for tracing multithreaded processes in Linux
206 * Compiles on glibc2.0 systems again
207 * Linux/S390 port added
208 * The usual Linux syscall updates
209 * we can follow fork on arm now
213 * Linux/MIPS port added
214 * Lots of Linux updates again
215 * Improved IPv6 support
221 * Compiles on glibc2.0 systems again
225 * Get stat structure properly on Linux 64bit archs
226 * Personalities work again
227 * Compile correctly on SunOS again
233 * Linux (ultra)sparc fixes
240 * add support for more Linux architectures (powerpc, sparc, arm)
241 * support lots more Linux syscalls
242 * fix signal handling
243 * add IPX and IPIP support
244 * check stray syscall after execv
245 * fix hanging children
247 Changes in version 3.1
248 ======================
251 * Linux 68k is supported
252 * Linux alpha is supported
253 * configure is upgraded to autoconf 2.x
254 * using -f in combination with -e now works correctly
255 * output can be piped to a program
256 * tracing setuid programs works better
257 * it is now reasonable to install strace setuid to root in some circumstances
258 * new useful tracing names like file and process to trace whole
259 classes of system calls, e.g. -efile traces all system calls that
260 take a file name as an argument
261 * IPC calls on SunOS 4.1.x are decoded
262 * Linux program memory is reliably dereferenced
263 * Linux decodes at least the name of all syscalls as of pre2.0.4
264 * various cosmetic changes and bug fixes
266 Changes from versions 2.x to version 3.0
267 ========================================
269 * filename arguments are neither abbreviated nor stringified
270 * string arguments are now true C strings using octal instead of hex by default
271 * preprocessor constants are never shortened (e.g. was RDONLY => now O_RDONLY)
272 * by default the output for multiple processes now goes into one file
273 * all structures, vectors, bitsets, etc. use consistent output formats
274 * the -c option now means count calls, -i does what the old -c used to do
276 New Features in version 3.0
277 ===========================
279 * non-ascii strings can be optionally printed entirely in hex
280 * the output format is readable when mutiple processes are generating output
281 * exit values are printed in an alignment column
282 * is is possible to suppress messages about attaching and detaching
283 * various tracing features can be enabled on a per syscall/signal/desc basis
284 * selective tracing of syscalls
285 * selective printing of syscall structures
286 * selective abbreviation of long structures on a per syscall basis
287 * selective printing of raw syscall arguments and results
288 * selective tracing of signals
289 * selective dumping of all I/O read from file descriptors
290 * selective dumping of all I/O written to file descriptors
291 * optional counting of time, calls, and errors for each syscall