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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)sigsetops.c 8.1 (Berkeley) 6/4/93 34 */ 35 36 #if defined(LIBC_SCCS) && !defined(lint) 37 static char rcsid[] = "$OpenBSD: sigsetops.c,v 1.2 1996/08/19 08:26:16 tholo Exp $"; 38 #endif /* LIBC_SCCS and not lint */ 39 40 #include <errno.h> 41 #include <signal.h> 42 43 #undef sigemptyset 44 #undef sigfillset 45 #undef sigaddset 46 #undef sigdelset 47 #undef sigismember 48 49 int 50 sigemptyset(set) 51 sigset_t *set; 52 { 53 *set = 0; 54 return (0); 55 } 56 57 int 58 sigfillset(set) 59 sigset_t *set; 60 { 61 *set = ~(sigset_t)0; 62 return (0); 63 } 64 65 int 66 sigaddset(set, signo) 67 sigset_t *set; 68 int signo; 69 { 70 if (signo <= 0 || signo >= NSIG) { 71 errno = EINVAL; 72 return -1; 73 } 74 *set |= sigmask(signo); 75 return (0); 76 } 77 78 int 79 sigdelset(set, signo) 80 sigset_t *set; 81 int signo; 82 { 83 if (signo <= 0 || signo >= NSIG) { 84 errno = EINVAL; 85 return -1; 86 } 87 *set &= ~sigmask(signo); 88 return (0); 89 } 90 91 int 92 sigismember(set, signo) 93 const sigset_t *set; 94 int signo; 95 { 96 if (signo <= 0 || signo >= NSIG) { 97 errno = EINVAL; 98 return -1; 99 } 100 return ((*set & sigmask(signo)) != 0); 101 } 102