Home | History | Annotate | Line # | Download | only in gen
sigsetops.c revision 1.8 
      1 /*	$NetBSD: sigsetops.c,v 1.8 1995/02/27 05:51:37 cgd 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  *	@(#)sigsetops.c	8.1 (Berkeley) 6/4/93
     36  */
     37 
     38 #if defined(LIBC_SCCS) && !defined(lint)
     39 #if 0
     40 static char sccsid[] = "@(#)sigsetops.c	8.1 (Berkeley) 6/4/93";
     41 #else
     42 static char rcsid[] = "$NetBSD";
     43 #endif
     44 #endif /* LIBC_SCCS and not lint */
     45 
     46 #include <signal.h>
     47 
     48 #undef sigemptyset
     49 #undef sigfillset
     50 #undef sigaddset
     51 #undef sigdelset
     52 #undef sigismember
     53 
     54 int
     55 sigemptyset(set)
     56 	sigset_t *set;
     57 {
     58 	*set = 0;
     59 	return (0);
     60 }
     61 
     62 int
     63 sigfillset(set)
     64 	sigset_t *set;
     65 {
     66 	*set = ~(sigset_t)0;
     67 	return (0);
     68 }
     69 
     70 int
     71 sigaddset(set, signo)
     72 	sigset_t *set;
     73 	int signo;
     74 {
     75 	if (signo <= 0 || signo >= NSIG) {
     76 		errno = EINVAL;
     77 		return -1;
     78 	}
     79 	*set |= sigmask(signo);
     80 	return (0);
     81 }
     82 
     83 int
     84 sigdelset(set, signo)
     85 	sigset_t *set;
     86 	int signo;
     87 {
     88 	if (signo <= 0 || signo >= NSIG) {
     89 		errno = EINVAL;
     90 		return -1;
     91 	}
     92 	*set &= ~sigmask(signo);
     93 	return (0);
     94 }
     95 
     96 int
     97 sigismember(set, signo)
     98 	const sigset_t *set;
     99 	int signo;
    100 {
    101 	if (signo <= 0 || signo >= NSIG) {
    102 		errno = EINVAL;
    103 		return -1;
    104 	}
    105 	return ((*set & sigmask(signo)) != 0);
    106 }
    107