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/* Copyright (C) 2006-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2006.
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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <signal.h>
#include <time.h>
#include <sys/poll.h>
#include <sysdep-cancel.h>
#include <kernel-features.h>
#include <time64-support.h>
int
__ppoll64 (struct pollfd *fds, nfds_t nfds, const struct __timespec64 *timeout,
const sigset_t *sigmask)
{
/* The Linux kernel can in some situations update the timeout value.
We do not want that so use a local variable. */
struct __timespec64 tval;
if (timeout != NULL)
{
tval = *timeout;
timeout = &tval;
}
int ret;
if (supports_time64 ())
{
#ifndef __NR_ppoll_time64
# define __NR_ppoll_time64 __NR_ppoll
#endif
ret = SYSCALL_CANCEL (ppoll_time64, fds, nfds, timeout, sigmask,
__NSIG_BYTES);
if (ret == 0 || errno != ENOSYS)
return ret;
mark_time64_unsupported ();
}
#ifndef __ASSUME_TIME64_SYSCALLS
struct timespec ts32;
if (timeout)
{
if (! in_time_t_range (timeout->tv_sec))
{
__set_errno (EOVERFLOW);
return -1;
}
ts32 = valid_timespec64_to_timespec (*timeout);
}
ret = SYSCALL_CANCEL (ppoll, fds, nfds, timeout ? &ts32 : NULL, sigmask,
__NSIG_BYTES);
#endif
return ret;
}
#if __TIMESIZE != 64
libc_hidden_def (__ppoll64)
int
__ppoll (struct pollfd *fds, nfds_t nfds, const struct timespec *timeout,
const sigset_t *sigmask)
{
struct __timespec64 ts64;
if (timeout)
ts64 = valid_timespec_to_timespec64 (*timeout);
return __ppoll64 (fds, nfds, timeout ? &ts64 : NULL, sigmask);
}
#endif
strong_alias (__ppoll, ppoll)
libc_hidden_def (ppoll)
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