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sigcompat.c revision 1.7 
      1 /*	$NetBSD: sigcompat.c,v 1.7 1997/07/13 18:50:14 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1989 The Regents of the University of California.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #if defined(LIBC_SCCS) && !defined(lint)
     38 #if 0
     39 static char *sccsid = "@(#)sigcompat.c	5.3 (Berkeley) 2/24/91";
     40 #else
     41 __RCSID("$NetBSD: sigcompat.c,v 1.7 1997/07/13 18:50:14 christos Exp $");
     42 #endif
     43 #endif /* LIBC_SCCS and not lint */
     44 
     45 #include <sys/param.h>
     46 #include <signal.h>
     47 
     48 int
     49 sigvec(signo, sv, osv)
     50 	int signo;
     51 	struct sigvec *sv, *osv;
     52 {
     53 	int ret;
     54 	struct sigvec nsv;
     55 
     56 	if (sv) {
     57 		nsv = *sv;
     58 		nsv.sv_flags ^= SV_INTERRUPT;	/* !SA_INTERRUPT */
     59 	}
     60 	ret = sigaction(signo, sv ? (struct sigaction *)&nsv : NULL,
     61 	    (struct sigaction *)osv);
     62 	if (ret == 0 && osv)
     63 		osv->sv_flags ^= SV_INTERRUPT;	/* !SA_INTERRUPT */
     64 	return (ret);
     65 }
     66 
     67 int
     68 sigsetmask(mask)
     69 	int mask;
     70 {
     71 	int omask, n;
     72 
     73 	n = sigprocmask(SIG_SETMASK, (sigset_t *) &mask, (sigset_t *) &omask);
     74 	if (n)
     75 		return (n);
     76 	return (omask);
     77 }
     78 
     79 int
     80 sigblock(mask)
     81 	int mask;
     82 {
     83 	int omask, n;
     84 
     85 	n = sigprocmask(SIG_BLOCK, (sigset_t *) &mask, (sigset_t *) &omask);
     86 	if (n)
     87 		return (n);
     88 	return (omask);
     89 }
     90 
     91 int
     92 sigpause(mask)
     93 	int mask;
     94 {
     95 	return (sigsuspend((sigset_t *)&mask));
     96 }
     97