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Remove useless #ifdefs from Linux sig*.c syscalls

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sigprocmask.c, sigtimedwait.c, sigwait.c and sigwaitinfo.c files from
sysdeps/unix/sysv/linux include nptl-signals.h via nptl/pthreadP.h,
and so SIGCANCEL and SIGSETXID become defined unconditionally. But
later in the code, there are some checks weither symbols defined,
which is useless. This patch removes useless checks.

Checked on x86_64-linux-gnu.

	* sysdeps/unix/sysv/linux/sigprocmask.c: Remove useless #ifdefs.
	* sysdeps/unix/sysv/linux/sigtimedwait.c: Likewise.
	* sysdeps/unix/sysv/linux/sigwait.c: Likewise.
	* sysdeps/unix/sysv/linux/sigwaitinfo.c: Likewise.

Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
Reviewed-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This commit is contained in:
Yury Norov
2017-10-31 15:31:40 -02:00
committed by Adhemerval Zanella
parent e8681faa01
commit 87bbc4cf1e
5 changed files with 9 additions and 32 deletions
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9
sysdeps/unix/sysv/linux/sigtimedwait.c
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@ -29,25 +29,18 @@ int
__sigtimedwait (const sigset_t *set, siginfo_t *info,
const struct timespec *timeout)
{
#ifdef SIGCANCEL
sigset_t tmpset;
if (set != NULL
&& (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
# ifdef SIGSETXID
|| __builtin_expect (__sigismember (set, SIGSETXID), 0)
# endif
))
|| __builtin_expect (__sigismember (set, SIGSETXID), 0)))
{
/* Create a temporary mask without the bit for SIGCANCEL set. */
// We are not copying more than we have to.
memcpy (&tmpset, set, _NSIG / 8);
__sigdelset (&tmpset, SIGCANCEL);
# ifdef SIGSETXID
__sigdelset (&tmpset, SIGSETXID);
# endif
set = &tmpset;
}
#endif
/* XXX The size argument hopefully will have to be changed to the
real size of the user-level sigset_t. */