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/* Copyright (C) 1991, 92, 94, 95, 96 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <signal.h>
/* Set the mask of blocked signals to MASK,
wait for a signal to arrive, and then restore the mask. */
int
__sigpause (sig_or_mask, is_sig)
int sig_or_mask;
int is_sig;
{
sigset_t set;
int sig;
if (is_sig != 0)
{
/* The modern X/Open implementation is requested. */
if (sigprocmask (0, NULL, &set) < 0
/* Yes, we call `sigaddset' and not `__sigaddset'. */
|| sigaddset (&set, sig_or_mask) < 0)
return -1;
}
else
{
if (__sigemptyset (&set) < 0)
return -1;
if (sizeof (sig_or_mask) == sizeof (set))
*(int *) &set = sig_or_mask;
else if (sizeof (unsigned long int) == sizeof (set))
*(unsigned long int *) &set = (unsigned int) sig_or_mask;
else
for (sig = 1; sig < NSIG; ++sig)
if ((sig_or_mask & sigmask (sig)) && __sigaddset (&set, sig) < 0)
return -1;
}
return sigsuspend (&set);
}
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