Home | History | Annotate | Line # | Download | only in compat-43
sigcompat.c revision 1.9 
      1 /*	$NetBSD: sigcompat.c,v 1.9 1998/09/26 23:44:08 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1989, 1993
      5  *	The Regents of the University of California.  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	8.1 (Berkeley) 6/2/93";
     40 #else
     41 __RCSID("$NetBSD: sigcompat.c,v 1.9 1998/09/26 23:44:08 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 	sigset_t nmask, omask;
     72 	int n;
     73 
     74 	sigemptyset(&nmask);
     75 	nmask.__bits[0] = mask;
     76 
     77 	n = sigprocmask(SIG_SETMASK, &nmask, &omask);
     78 	if (n)
     79 		return (n);
     80 	return (omask.__bits[0]);
     81 }
     82 
     83 int
     84 sigblock(mask)
     85 	int mask;
     86 {
     87 	sigset_t nmask, omask;
     88 	int n;
     89 
     90 	sigemptyset(&nmask);
     91 	nmask.__bits[0] = mask;
     92 
     93 	n = sigprocmask(SIG_BLOCK, &nmask, &omask);
     94 	if (n)
     95 		return (n);
     96 	return (omask.__bits[0]);
     97 }
     98 
     99 int
    100 sigpause(mask)
    101 	int mask;
    102 {
    103 	sigset_t nmask;
    104 
    105 	sigemptyset(&nmask);
    106 	nmask.__bits[0] = mask;
    107 	return (sigsuspend(&nmask));
    108 }
    109