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/*
* Copyright (c) 2004 Gunnar Ritter
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute
* it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source distribution.
*/
/* Sccsid @(#)sigpause.c 1.6 (gritter) 1/22/06 */
#if defined (__FreeBSD__) || defined (__dietlibc__) || defined (__NetBSD__) || \
defined (__OpenBSD__) || defined (__DragonFly__) || defined (__APPLE__)
#include <signal.h>
#include "sigset.h"
int
sigpause(int sig)
{
sigset_t nset, oset;
int ret;
if (sig <= 0)
return -1;
sigemptyset(&nset);
sigaddset(&nset, sig);
if (sigprocmask(SIG_UNBLOCK, &nset, &oset) < 0)
return -1;
sigemptyset(&nset);
ret = sigsuspend(&nset);
if (sigprocmask(SIG_SETMASK, &oset, (sigset_t *)0) < 0)
ret = -1;
return ret;
}
#endif /* __FreeBSD__ || __dietlibc__ || __NetBSD__ || __OpenBSD__ ||
__DragonFly__ || __APPLE__ */
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