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/* Copyright (C) 1997-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <signal.h>
#include <string.h>
//#include <stdint.h>
//#include <nptl/pthreadP.h>
#include <sysdep-cancel.h>
#include <y2038-support.h>
int
__sigtimedwait (const sigset_t *set, siginfo_t *info,
const struct timespec *timeout)
{
/* XXX The size argument hopefully will have to be changed to the
real size of the user-level sigset_t. */
int result = SYSCALL_CANCEL (rt_sigtimedwait, set, info, timeout, _NSIG / 8);
/* The kernel generates a SI_TKILL code in si_code in case tkill is
used. tkill is transparently used in raise(). Since having
SI_TKILL as a code is useful in general we fold the results
here. */
if (result != -1 && info != NULL && info->si_code == SI_TKILL)
info->si_code = SI_USER;
return result;
}
libc_hidden_def (__sigtimedwait)
weak_alias (__sigtimedwait, sigtimedwait)
/* 64-bit time version */
int
__sigtimedwait_time64 (const sigset_t *set, siginfo_t *info,
const struct __timespec64 *timeout)
{
int result;
struct timespec ts32;
#ifdef __NR_rt_sigtimedwait_time64
struct __timespec64 ts64;
#endif
#ifdef SIGCANCEL
sigset_t tmpset;
if (set != NULL
&& (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
# ifdef SIGSETXID
|| __builtin_expect (__sigismember (set, SIGSETXID), 0)
# endif
))
{
/* 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. */
#ifdef __NR_rt_sigtimedwait_time64
if (__y2038_linux_support > 0)
{
if (timeout)
{
ts64.tv_sec = timeout->tv_sec;
ts64.tv_nsec = timeout->tv_nsec;
ts64.tv_pad = 0;
result = SYSCALL_CANCEL (rt_sigtimedwait_time64, set, info, &ts64, _NSIG / 8);
if (result == -1 && errno==ENOSYS)
{
__y2038_linux_support = -1;
}
}
else
result = SYSCALL_CANCEL (rt_sigtimedwait, set, info, NULL, _NSIG / 8);
}
else
#endif
{
if (timeout)
{
if (! timespec64_to_timespec(timeout, &ts32))
{
errno = EOVERFLOW;
return -1;
}
result = SYSCALL_CANCEL (rt_sigtimedwait, set, info, &ts32, _NSIG / 8);
}
else
result = SYSCALL_CANCEL (rt_sigtimedwait, set, info, NULL, _NSIG / 8);
}
/* The kernel generates a SI_TKILL code in si_code in case tkill is
used. tkill is transparently used in raise(). Since having
SI_TKILL as a code is useful in general we fold the results
here. */
if (result != -1 && info != NULL && info->si_code == SI_TKILL)
info->si_code = SI_USER;
return result;
}
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