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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>
63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
/* Copyright (C) 1997-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <signal.h>
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#include <string.h>
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#include <nptl/pthreadP.h>
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#include <sysdep-cancel.h>
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#include <sys/syscall.h>
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#ifdef __NR_rt_sigtimedwait
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int
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__sigtimedwait (const sigset_t *set, siginfo_t *info,
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const struct timespec *timeout)
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{
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sigset_t tmpset;
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if (set != NULL
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&& (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
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|| __builtin_expect (__sigismember (set, SIGSETXID), 0)))
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{
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/* Create a temporary mask without the bit for SIGCANCEL set. */
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// We are not copying more than we have to.
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memcpy (&tmpset, set, _NSIG / 8);
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__sigdelset (&tmpset, SIGCANCEL);
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__sigdelset (&tmpset, SIGSETXID);
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set = &tmpset;
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}
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/* XXX The size argument hopefully will have to be changed to the
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real size of the user-level sigset_t. */
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int result = SYSCALL_CANCEL (rt_sigtimedwait, set, info, timeout, _NSIG / 8);
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/* The kernel generates a SI_TKILL code in si_code in case tkill is
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used. tkill is transparently used in raise(). Since having
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SI_TKILL as a code is useful in general we fold the results
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here. */
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if (result != -1 && info != NULL && info->si_code == SI_TKILL)
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info->si_code = SI_USER;
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return result;
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}
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libc_hidden_def (__sigtimedwait)
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weak_alias (__sigtimedwait, sigtimedwait)
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#else
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# include <signal/sigtimedwait.c>
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#endif
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