libc/gen/sigrelse.c

1.1.2.2  thorpej /*	$NetBSD: sigrelse.c,v 1.1.2.2 2003/01/17 05:13:00 thorpej Exp $	*/
1.1.2.2  thorpej
1.1.2.2  thorpej /*-
1.1.2.2  thorpej  * Copyright (c) 2003 The NetBSD Foundation, Inc.
1.1.2.2  thorpej  * All rights reserved.
1.1.2.2  thorpej  *
1.1.2.2  thorpej  * This code is derived from software contributed to The NetBSD Foundation
1.1.2.2  thorpej  * by Klaus Klein.
1.1.2.2  thorpej  *
1.1.2.2  thorpej  * Redistribution and use in source and binary forms, with or without
1.1.2.2  thorpej  * modification, are permitted provided that the following conditions
1.1.2.2  thorpej  * are met:
1.1.2.2  thorpej  * 1. Redistributions of source code must retain the above copyright
1.1.2.2  thorpej  *    notice, this list of conditions and the following disclaimer.
1.1.2.2  thorpej  * 2. Redistributions in binary form must reproduce the above copyright
1.1.2.2  thorpej  *    notice, this list of conditions and the following disclaimer in the
1.1.2.2  thorpej  *    documentation and/or other materials provided with the distribution.
1.1.2.2  thorpej  * 3. All advertising materials mentioning features or use of this software
1.1.2.2  thorpej  *    must display the following acknowledgement:
1.1.2.2  thorpej  *        This product includes software developed by the NetBSD
1.1.2.2  thorpej  *        Foundation, Inc. and its contributors.
1.1.2.2  thorpej  * 4. Neither the name of The NetBSD Foundation nor the names of its
1.1.2.2  thorpej  *    contributors may be used to endorse or promote products derived
1.1.2.2  thorpej  *    from this software without specific prior written permission.
1.1.2.2  thorpej  *
1.1.2.2  thorpej  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
1.1.2.2  thorpej  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
1.1.2.2  thorpej  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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1.1.2.2  thorpej  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
1.1.2.2  thorpej  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
1.1.2.2  thorpej  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
1.1.2.2  thorpej  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
1.1.2.2  thorpej  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
1.1.2.2  thorpej  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1.1.2.2  thorpej  * POSSIBILITY OF SUCH DAMAGE.
1.1.2.2  thorpej  */
1.1.2.2  thorpej
1.1.2.2  thorpej #include <sys/cdefs.h>
1.1.2.2  thorpej #if defined(LIBC_SCCS) && !defined(lint)
1.1.2.2  thorpej __RCSID("$NetBSD: sigrelse.c,v 1.1.2.2 2003/01/17 05:13:00 thorpej Exp $");
1.1.2.2  thorpej #endif
1.1.2.2  thorpej
1.1.2.2  thorpej #include "namespace.h"
1.1.2.2  thorpej #include <signal.h>
1.1.2.2  thorpej #include <stddef.h>
1.1.2.2  thorpej
1.1.2.2  thorpej int
1.1.2.2  thorpej sigrelse(int sig)
1.1.2.2  thorpej {
1.1.2.2  thorpej 	sigset_t set;
1.1.2.2  thorpej
1.1.2.2  thorpej 	sigemptyset(&set);
1.1.2.2  thorpej 	if (sigaddset(&set, sig) != 0)
1.1.2.2  thorpej 		return (-1);
1.1.2.2  thorpej
1.1.2.2  thorpej 	return (sigprocmask(SIG_UNBLOCK, &set, NULL));
1.1.2.2  thorpej }