strace

History

Eugene Syromyatnikov 156777f967 Fix old_getrlimit handling

On some historic 32-bit platforms (and 64-bit SuperH), __NR_getrlimit
corresponds to a non-SuS-compatible version that uses a hardcoded value
of 0x7fffffff as infinity. Moreover, in order to provide a backwards
compatibility with that behaviour, some architectures (mips, sparc, and
alpha, with latter being especially peculiar in its ways) just defined
RLIM_INFINITY to that value (with alpha defining RLIM_INFINITY to 2^63-1)
instead of employing sys_old_getrlimit syscall and providing
__NR_ugetrlimit with proper implementation, as other arches did.

Overall, that led to conclusion that printing "RLIM_INFINITY" is never
enough and the actial value should be printed as well.

* linux/i386/syscallent.h ([76]): Changing decoder to old_getrlimit.
* linux/m68k/syscallent.h ([76]): Likewise.
* linux/microblaze/syscallent.h ([76]): Likewise.
* linux/powerpc/syscallent.h ([76]): Likewise.
* linux/s390/syscallent.h ([76]): Likewise.
* linux/sh/syscallent.h ([76]): Likewise.
* linux/sh64/syscallent.h ([76]): Likewise.
* resource.c (sprint_rlim64, sprint_rlim32, print_rlimit64,
print_rlimit32): Remove.
(STRACE_RLIM_INFINITY, STRACE_M32_RLIM_INFINITY,
STRACE_RLIM64_INFINITY, OLD_GETLIMIT_INFINITY): New macro constants.
(enum rlimit_decode_mode): New enumeration.
(struct rlimit_64): Move type definition out of print_rlimit64.
(print_rlim_t): New function, printer of an rlimit value, in accordance
with rlimit decode mode and xlat verbosity mode.
(print_rlimit): Printer of a fetched rlimit_64 structure.
(decode_rlimit): Fetches struct rlimit/rlimit64 in accordance with
current mode and personality, uses print_rlimit for printing.
(do_getrlimit): New function, decodes old_getrlimit/getrlimit syscalls.
(SYS_FUNC(getrlimit)): Call do_getrlimit with RDM_NORMAL mode.
(SYS_FUNC(old_getrlimit)): New function, calls do_getrlimit with
RDM_OLD_GETRLIMIT mode.
(SYS_FUNC(setrlimit)): Call decode_rlimit with RDM_NORMAL mode.
(SYS_FUNC(prlimit64)): Call decode_rlimit with RDM_PRLIMIT64 mode
instead of print_rlimit64.
* tests/xgetrlimit.c (sprint_rlim): Rename to...
(print_rlim): ...this, print to terminal instead of string buffer in
accordance with the output format expected.
(main): Accomodate sprint_rlim -> print_rlim change, use sprintrc.
* tests/getrlimit.c (INFINITY, INFINITY_STR): New macros.
* tests/setrlimit.c: Likewise.
* tests/ugetrlimit.c: Likewise.

2018-09-17 20:12:02 +02:00

arch_defs_.h

Rework decoding and pathtrace of old select syscall

2018-01-23 23:17:02 +00:00

arch_regs.c

upeek, upoke: change argument types from long to unsigned long

2016-12-25 20:14:12 +00:00

arch_regs.h

upeek, upoke: change argument types from long to unsigned long

2016-12-25 20:14:12 +00:00

arch_rt_sigframe.c

Introduce get_rt_sigframe_addr function