1 /*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)sigsetops.c 8.1 (Berkeley) 6/4/93 30 */ 31 32 #if defined(LIBC_SCCS) && !defined(lint) 33 static char rcsid[] = "$OpenBSD: sigsetops.c,v 1.3 2003/06/02 20:18:35 millert Exp $"; 34 #endif /* LIBC_SCCS and not lint */ 35 36 #include <errno.h> 37 #include <signal.h> 38 39 #undef sigemptyset 40 #undef sigfillset 41 #undef sigaddset 42 #undef sigdelset 43 #undef sigismember 44 45 int 46 sigemptyset(set) 47 sigset_t *set; 48 { 49 *set = 0; 50 return (0); 51 } 52 53 int 54 sigfillset(set) 55 sigset_t *set; 56 { 57 *set = ~(sigset_t)0; 58 return (0); 59 } 60 61 int 62 sigaddset(set, signo) 63 sigset_t *set; 64 int signo; 65 { 66 if (signo <= 0 || signo >= NSIG) { 67 errno = EINVAL; 68 return -1; 69 } 70 *set |= sigmask(signo); 71 return (0); 72 } 73 74 int 75 sigdelset(set, signo) 76 sigset_t *set; 77 int signo; 78 { 79 if (signo <= 0 || signo >= NSIG) { 80 errno = EINVAL; 81 return -1; 82 } 83 *set &= ~sigmask(signo); 84 return (0); 85 } 86 87 int 88 sigismember(set, signo) 89 const sigset_t *set; 90 int signo; 91 { 92 if (signo <= 0 || signo >= NSIG) { 93 errno = EINVAL; 94 return -1; 95 } 96 return ((*set & sigmask(signo)) != 0); 97 } 98