Blame sysdeps/unix/sysv/linux/ppoll.c

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/* Copyright (C) 2006-2018 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   Contributed by Ulrich Drepper <drepper@redhat.com>, 2006.
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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 <time.h>
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#include <sys/poll.h>
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#include <sysdep-cancel.h>
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int
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ppoll (struct pollfd *fds, nfds_t nfds, const struct timespec *timeout,
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       const sigset_t *sigmask)
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{
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  /* The Linux kernel can in some situations update the timeout value.
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     We do not want that so use a local variable.  */
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  struct timespec tval;
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  if (timeout != NULL)
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    {
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      tval = *timeout;
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      timeout = &tval;
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    }
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  return SYSCALL_CANCEL (ppoll, fds, nfds, timeout, sigmask, _NSIG / 8);
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}
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libc_hidden_def (ppoll)