xref: /illumos-gate/usr/src/lib/libc/port/gen/sigflag.c (revision b11e536c7bee7ad575c31194d5e3da89f572ebb5)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 /*	Copyright (c) 1988 AT&T	*/
30 /*	  All Rights Reserved  	*/
31 
32 /* change state of signal flag */
33 
34 #pragma weak sigflag = _sigflag
35 
36 #include "synonyms.h"
37 #include <sys/types.h>
38 #include <signal.h>
39 
40 int
41 sigflag(int sig, int flag, int on)
42 {
43 	struct sigaction sa;
44 	int v;
45 
46 	if ((v = sigaction(sig, 0, &sa)) < 0)
47 		return (v);
48 	if (on)
49 		sa.sa_flags |= flag;
50 	else
51 		sa.sa_flags &= ~flag;
52 	return (sigaction(sig, &sa, 0));
53 }
54