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Do not assume that some syscalls do not generate syscall-exit-stops.
When syscalls fail for any reason they may generate syscall-exit-stops.
The solution is to wait for an actual exit reported by PTRACE_EVENT_EXIT
and print the end of unfinished exiting syscall properly.
* exit.c: Remove.
* Makefile.am (strace_SOURCES): Remove exit.c.
* linux/dummy.h (sys_exit): Alias to printargs_d.
* strace.c (ptrace_setoptions): Add PTRACE_O_TRACEEXIT bit.
(print_event_exit): New function.
(trace): Use it in case of PTRACE_EVENT_EXIT.
* syscall.c (trace_syscall_entering): Remove special handling
of SEN_exit.
Since create_module syscall is present only in kernels before Linux 2.6
and strace does not support those kernels, there is no use to keep this
parser any longer.
* bjm.c (SYS_FUNC(create_module)): Remove.
* linux/dummy.h (sys_create_module): Add stub alias.
* xlat/ipccalls.in: New file.
* ipc.c: New file.
* Makefile.am (libstrace_a_SOURCES): Add it.
* linux/dummy.h (sys_ipc): Remove stub alias.
* syscall.c (decode_ipc_subcall): Treat 1st argument of ipc syscall
as "unsigned int".
[S390 || S390X]: Skip ipc cubcalls that have non-zero version.
[SPARC64]: Likewise, for the native personality.
Save ipc cubcall version for later use by specific ipc parsers.
* ipc_msg.c (SYS_FUNC(msgrcv)): Handle non-zero ipc subcall version.
[SPARC64]: Handle non-ipc_kludge case for the native personality.
* linux/subcall.h (msgrcv): Change nargs from 4 to 5.
* linux/s390/syscallent.h (ipc): Change nargs from 6 to 5.
* linux/s390x/syscallent.h (ipc): Likewise.
* xlat/socketcalls.in: New file.
* socketcall.c: New file.
* Makefile.am (libstrace_a_SOURCES): Add it.
* linux/dummy.h (sys_socketcall): Remove stub alias.
* syscall.c (decode_socket_subcall): Treat 1st argument of socketcall
as "int". Do not substitute syscall until all socketcall arguments
have been fetched successfully.
timerfd syscall was introduced in v2.6.22-rc1, but in v2.6.25-rc1
it was replaced by timerfd_* syscall family.
* linux/avr32/syscallent.h (timerfd): Fix nargs.
* linux/dummy.h (sys_timerfd): Add stub alias.
* time.c (SYS_FUNC(timerfd)): Remove.
These system calls are not implemented in the Linux kernel.
* linux/dummy.h(getpmsg, putpmsg): Move to the list of deprecated
syscalls.
* Makefile.am (strace_SOURCES): Remove stream.c.
* stream.c: Remove.
* xlat/pmsgflags.in: Remove.
Since query_module syscall is present only in kernels before Linux 2.6
and strace does not support those kernels, there is no use to keep this
parser any longer.
* bjm.c: Do not include <sys/*>, "xlat/qm_which.h",
and "xlat/modflags.h".
(MOD_*, QM_*, module_symbol, module_info, SYS_FUNC(query_module)):
Remove.
* linux/dummy.h (sys_query_module): Add stub alias.
* xlat/modflags.in: Remove.
* xlat/qm_which.in: Remove.
Starting with commit v4.6-281-g7af9f35, we implicitly assume that
HAVE_SENDMSG is always defined. Therefore, the check for sendmsg
availability is redundant and could be safely removed.
* configure.ac (AC_CHECK_FUNCS): Remove sendmsg.
* linux/dummy.h [!HAVE_SENDMSG] (sys_recvmsg, sys_sendmsg): Remove
stub aliases.
* net.c [HAVE_SENDMSG]: Define unconditionally.
* syscall.c (dumpio) [HAVE_SENDMSG]: Likewise.
* pathtrace.c (pathtrace_match): Change all comparisons with function
pointers to a single SEN based switch.
* syscall.c (dumpio, trace_syscall_entering): Change all comparisons
with function pointers to comparisons with SENs.
* ipc.c (sys_ipc): Remove.
* sock.c (sys_socketcall): Likewise.
* linux/dummy.h (sys_ipc, sys_socketcall): New aliases.
* syscall.c (SEN): New temporary macro.
* linux/dummy.h (sys_printargs): New macro.
* linux/subcall.h: Wrap all sys_func entries using SEN.
* linux/*/syscallent*.h: Likewise.
Define two sets of parsers on architectures that support (either
directly or via multiarch) 16-bit and 32-bit uid/gid syscalls
simultaneously. Since the code in these two sets is essentially
the same and the key difference between them is the size of uid_t,
implement it by parametrizing uid_t and names of parser functions.
* defs.h (NEED_UID16_PARSERS): New macro.
* linux/syscall.h [NEED_UID16_PARSERS] (sys_chown16, sys_fchown16,
sys_getresuid16, sys_getuid16, sys_setfsuid16, sys_setresuid16,
sys_setreuid16, sys_setuid16): New prototypes.
* linux/dummy.h (sys_geteuid16): Alias to sys_getuid16.
(sys_getegid16, sys_getgid16, sys_getresgid16, sys_setfsgid16,
sys_setgid16, sys_setregid16, sys_setresgid16): Alias to corresponding
sys_*uid16 functions.
* uid.c: Stop including <asm/posix_types.h>.
Parametrize uid_t and names of all exported functions.
(get_print_uid): New function.
(sys_getresuid): Use it.
(printuid): Check for (uid_t) -1.
* uid16.c: New file.
* Makefile.am (strace_SOURCES): Add it.
* linux/arm/syscallent.h: Use sys_chown16, sys_fchown16, sys_getegid16,
sys_geteuid16, sys_getgid16, sys_getresgid16, sys_getresuid16,
sys_getuid16, sys_setfsgid16, sys_setfsuid16, sys_setgid16,
sys_setregid16, sys_setresgid16, sys_setresuid16, sys_setreuid16,
and sys_setuid16 parsers for *chown and [gs]et*[gu]id syscall entries.
* linux/bfin/syscallent.h: Likewise.
* linux/i386/syscallent.h: Likewise.
* linux/m68k/syscallent.h: Likewise.
* linux/microblaze/syscallent.h: Likewise.
* linux/s390/syscallent.h: Likewise.
* linux/sparc/syscallent.h: Likewise.
* linux/sh/syscallent.h: Likewise.
* linux/sh64/syscallent.h: Likewise.
* tests/uid16.c: New file.
* tests/uid16.test: New test.
* tests/Makefile.am (CHECK_PROGRAMS): Add uid16.
(TESTS): Add uid16.test.
* tests/.gitignore: Add uid16.
Since parsers for setdomainname and sethostname syscalls are identical,
replace sys_setdomainname with an alias to sys_sethostname.
* linux/dummy.h (sys_setdomainname): Alias to sys_sethostname.
* linux/syscall.h (sys_setdomainname): Remove.
* process.c (sys_setdomainname): Remove.
Since parsers for getpeername and getsockname syscalls are identical,
replace sys_getpeername with an alias to sys_getsockname.
* linux/dummy.h (sys_getpeername): Alias to sys_getsockname.
* linux/syscall.h (sys_getpeername): Remove.
* net.c (sys_getpeername): Remove.
Since parsers for stime and time syscalls are identical,
replace sys_stime with an alias to sys_time.
* linux/dummy.h (sys_stime): Alias to sys_time.
* linux/syscall.h (sys_stime): Remove.
* time.c (sys_stime): Remove.
Special parsers for mkdir and mkdirat are redundant because
sys_chmod and sys_fchmodat implement the same decoding.
* file.c (decode_mkdir, sys_mkdir, sys_mkdirat): Remove.
* linux/dummy.h (sys_mkdir): Alias to sys_chmod.
(sys_mkdirat): Alias to sys_fchmodat.
* linux/syscall.h (sys_mkdir, sys_mkdirat): Remove.
* pathtrace.c (pathtrace_match): Do not check for sys_mkdirat.
