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sigcompat.c revision 1.8
      1  1.8     perry /*	$NetBSD: sigcompat.c,v 1.8 1998/02/02 06:26:43 perry Exp $	*/
      2  1.7  christos 
      3  1.1       cgd /*
      4  1.8     perry  * Copyright (c) 1989, 1993
      5  1.8     perry  *	The Regents of the University of California.  All rights reserved.
      6  1.1       cgd  *
      7  1.1       cgd  * Redistribution and use in source and binary forms, with or without
      8  1.1       cgd  * modification, are permitted provided that the following conditions
      9  1.1       cgd  * are met:
     10  1.1       cgd  * 1. Redistributions of source code must retain the above copyright
     11  1.1       cgd  *    notice, this list of conditions and the following disclaimer.
     12  1.1       cgd  * 2. Redistributions in binary form must reproduce the above copyright
     13  1.1       cgd  *    notice, this list of conditions and the following disclaimer in the
     14  1.1       cgd  *    documentation and/or other materials provided with the distribution.
     15  1.1       cgd  * 3. All advertising materials mentioning features or use of this software
     16  1.1       cgd  *    must display the following acknowledgement:
     17  1.1       cgd  *	This product includes software developed by the University of
     18  1.1       cgd  *	California, Berkeley and its contributors.
     19  1.1       cgd  * 4. Neither the name of the University nor the names of its contributors
     20  1.1       cgd  *    may be used to endorse or promote products derived from this software
     21  1.1       cgd  *    without specific prior written permission.
     22  1.1       cgd  *
     23  1.1       cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  1.1       cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  1.1       cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  1.1       cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  1.1       cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  1.1       cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  1.1       cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  1.1       cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  1.1       cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  1.1       cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  1.1       cgd  * SUCH DAMAGE.
     34  1.1       cgd  */
     35  1.1       cgd 
     36  1.7  christos #include <sys/cdefs.h>
     37  1.1       cgd #if defined(LIBC_SCCS) && !defined(lint)
     38  1.7  christos #if 0
     39  1.8     perry static char sccsid[] = "@(#)sigcompat.c	8.1 (Berkeley) 6/2/93";
     40  1.7  christos #else
     41  1.8     perry __RCSID("$NetBSD: sigcompat.c,v 1.8 1998/02/02 06:26:43 perry Exp $");
     42  1.7  christos #endif
     43  1.1       cgd #endif /* LIBC_SCCS and not lint */
     44  1.1       cgd 
     45  1.1       cgd #include <sys/param.h>
     46  1.1       cgd #include <signal.h>
     47  1.1       cgd 
     48  1.4       jtc int
     49  1.1       cgd sigvec(signo, sv, osv)
     50  1.1       cgd 	int signo;
     51  1.1       cgd 	struct sigvec *sv, *osv;
     52  1.1       cgd {
     53  1.1       cgd 	int ret;
     54  1.5        ws 	struct sigvec nsv;
     55  1.1       cgd 
     56  1.5        ws 	if (sv) {
     57  1.5        ws 		nsv = *sv;
     58  1.5        ws 		nsv.sv_flags ^= SV_INTERRUPT;	/* !SA_INTERRUPT */
     59  1.5        ws 	}
     60  1.6       cgd 	ret = sigaction(signo, sv ? (struct sigaction *)&nsv : NULL,
     61  1.6       cgd 	    (struct sigaction *)osv);
     62  1.1       cgd 	if (ret == 0 && osv)
     63  1.1       cgd 		osv->sv_flags ^= SV_INTERRUPT;	/* !SA_INTERRUPT */
     64  1.1       cgd 	return (ret);
     65  1.1       cgd }
     66  1.1       cgd 
     67  1.4       jtc int
     68  1.1       cgd sigsetmask(mask)
     69  1.1       cgd 	int mask;
     70  1.1       cgd {
     71  1.1       cgd 	int omask, n;
     72  1.1       cgd 
     73  1.1       cgd 	n = sigprocmask(SIG_SETMASK, (sigset_t *) &mask, (sigset_t *) &omask);
     74  1.1       cgd 	if (n)
     75  1.1       cgd 		return (n);
     76  1.1       cgd 	return (omask);
     77  1.1       cgd }
     78  1.1       cgd 
     79  1.4       jtc int
     80  1.1       cgd sigblock(mask)
     81  1.1       cgd 	int mask;
     82  1.1       cgd {
     83  1.1       cgd 	int omask, n;
     84  1.1       cgd 
     85  1.1       cgd 	n = sigprocmask(SIG_BLOCK, (sigset_t *) &mask, (sigset_t *) &omask);
     86  1.1       cgd 	if (n)
     87  1.1       cgd 		return (n);
     88  1.1       cgd 	return (omask);
     89  1.1       cgd }
     90  1.1       cgd 
     91  1.4       jtc int
     92  1.1       cgd sigpause(mask)
     93  1.1       cgd 	int mask;
     94  1.1       cgd {
     95  1.1       cgd 	return (sigsuspend((sigset_t *)&mask));
     96  1.1       cgd }
     97