1 /* $NetBSD: sigsetops.c,v 1.11 1997/07/13 19:46:19 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 * @(#)sigsetops.c 8.1 (Berkeley) 6/4/93 36 */ 37 38 #include <sys/cdefs.h> 39 #if defined(LIBC_SCCS) && !defined(lint) 40 #if 0 41 static char sccsid[] = "@(#)sigsetops.c 8.1 (Berkeley) 6/4/93"; 42 #else 43 __RCSID("$NetBSD: sigsetops.c,v 1.11 1997/07/13 19:46:19 christos Exp $"); 44 #endif 45 #endif /* LIBC_SCCS and not lint */ 46 47 #include <errno.h> 48 #include <signal.h> 49 50 #undef sigemptyset 51 #undef sigfillset 52 #undef sigaddset 53 #undef sigdelset 54 #undef sigismember 55 56 int 57 sigemptyset(set) 58 sigset_t *set; 59 { 60 *set = 0; 61 return (0); 62 } 63 64 int 65 sigfillset(set) 66 sigset_t *set; 67 { 68 *set = ~(sigset_t)0; 69 return (0); 70 } 71 72 int 73 sigaddset(set, signo) 74 sigset_t *set; 75 int signo; 76 { 77 if (signo <= 0 || signo >= NSIG) { 78 errno = EINVAL; 79 return -1; 80 } 81 *set |= sigmask(signo); 82 return (0); 83 } 84 85 int 86 sigdelset(set, signo) 87 sigset_t *set; 88 int signo; 89 { 90 if (signo <= 0 || signo >= NSIG) { 91 errno = EINVAL; 92 return -1; 93 } 94 *set &= ~sigmask(signo); 95 return (0); 96 } 97 98 int 99 sigismember(set, signo) 100 const sigset_t *set; 101 int signo; 102 { 103 if (signo <= 0 || signo >= NSIG) { 104 errno = EINVAL; 105 return -1; 106 } 107 return ((*set & sigmask(signo)) != 0); 108 } 109