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/* Copyright (C) 1991, 92, 1994-1998, 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <signal.h>
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#include <stddef.h> /* For NULL. */
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/* Set the mask of blocked signals to MASK,
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wait for a signal to arrive, and then restore the mask. */
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int __sigpause (int sig_or_mask, int is_sig)
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{
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sigset_t set;
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int sig;
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if (is_sig != 0)
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{
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/* The modern X/Open implementation is requested. */
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if (sigprocmask (0, NULL, &set) < 0
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/* Yes, we call `sigdelset' and not `__sigdelset'. */
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|| sigdelset (&set, sig_or_mask) < 0)
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return -1;
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}
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else
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{
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if (sigemptyset (&set) < 0)
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return -1;
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if (sizeof (sig_or_mask) == sizeof (set))
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*(int *) &set = sig_or_mask;
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else if (sizeof (unsigned long int) == sizeof (set))
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*(unsigned long int *) &set = (unsigned int) sig_or_mask;
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else
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for (sig = 1; sig < NSIG; ++sig)
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if ((sig_or_mask & sigmask (sig)) && __sigaddset (&set, sig) < 0)
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return -1;
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}
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return sigsuspend (&set);
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}
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#undef sigpause
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/* We have to provide a default version of this function since the
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standards demand it. The version which is a bit more reasonable is
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the BSD version. So make this the default. */
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int sigpause (int mask)
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{
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return __sigpause (mask, 0);
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}
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