1 /* $NetBSD: sigsetops.c,v 1.10 1995/03/04 01:56:07 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: sigsetops.c,v 1.10 1995/03/04 01:56:07 cgd Exp $"; 43 #endif 44 #endif /* LIBC_SCCS and not lint */ 45 46 #include <errno.h> 47 #include <signal.h> 48 49 #undef sigemptyset 50 #undef sigfillset 51 #undef sigaddset 52 #undef sigdelset 53 #undef sigismember 54 55 int 56 sigemptyset(set) 57 sigset_t *set; 58 { 59 *set = 0; 60 return (0); 61 } 62 63 int 64 sigfillset(set) 65 sigset_t *set; 66 { 67 *set = ~(sigset_t)0; 68 return (0); 69 } 70 71 int 72 sigaddset(set, signo) 73 sigset_t *set; 74 int signo; 75 { 76 if (signo <= 0 || signo >= NSIG) { 77 errno = EINVAL; 78 return -1; 79 } 80 *set |= sigmask(signo); 81 return (0); 82 } 83 84 int 85 sigdelset(set, signo) 86 sigset_t *set; 87 int signo; 88 { 89 if (signo <= 0 || signo >= NSIG) { 90 errno = EINVAL; 91 return -1; 92 } 93 *set &= ~sigmask(signo); 94 return (0); 95 } 96 97 int 98 sigismember(set, signo) 99 const sigset_t *set; 100 int signo; 101 { 102 if (signo <= 0 || signo >= NSIG) { 103 errno = EINVAL; 104 return -1; 105 } 106 return ((*set & sigmask(signo)) != 0); 107 } 108