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      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 2008 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 #include "lint.h"
     30 #include <sys/types.h>
     31 #include <errno.h>
     32 #include <signal.h>
     33 
     34 int
     35 siginterrupt(int sig, int flag)
     36 {
     37 	struct sigaction act;
     38 
     39 	/*
     40 	 * Check for valid signal number
     41 	 */
     42 	if (sig <= 0 || sig >= NSIG) {
     43 		errno = EINVAL;
     44 		return (-1);
     45 	}
     46 
     47 	(void) sigaction(sig, NULL, &act);
     48 	if (flag)
     49 		act.sa_flags &= ~SA_RESTART;
     50 	else
     51 		act.sa_flags |= SA_RESTART;
     52 	return (sigaction(sig, &act, NULL));
     53 }
     54