/* Copyright (C) 1991-2018 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/>.  */

#define sigpause __rename_sigpause

#include <errno.h>

#include <signal.h>

#include <stddef.h>		/* For NULL.  */

#undef sigpause

#include <sigset-cvt-mask.h>

#include <sysdep-cancel.h>

int

__sigpause (int sig_or_mask, int is_sig)

{

  sigset_t set;

  if (is_sig != 0)

    {

      /* The modern X/Open implementation is requested.  */

      if (__sigprocmask (0, NULL, &set) < 0

	  || sigdelset (&set, sig_or_mask) < 0)

	return -1;

    }

  else if (sigset_set_old_mask (&set, sig_or_mask) < 0)

    return -1;

  /* Note the sigpause() is a cancellation point.  But since we call

     sigsuspend() which itself is a cancellation point we do not have

     to do anything here.  */

  return __sigsuspend (&set);

}

libc_hidden_def (__sigpause)

/* We have to provide a default version of this function since the

   standards demand it.  The version which is a bit more reasonable is

   the BSD version.  So make this the default.  */

int

__attribute__ ((weak))

__default_sigpause (int mask)

{

  return __sigpause (mask, 0);

}

#undef sigpause

weak_alias (__default_sigpause, sigpause)

strong_alias (__default_sigpause, __libc_sigpause)

/* We have to provide a default version of this function since the

   standards demand it.  The version which is a bit more reasonable is

   the BSD version.  So make this the default.  */

int

__attribute__ ((weak))

__xpg_sigpause (int sig)

{

  return __sigpause (sig, 1);

}

strong_alias (__xpg_sigpause, __libc___xpg_sigpause)

/* __sigsuspend handles cancellation.  */

LIBC_CANCEL_HANDLED ();