1 /* $OpenBSD: sigsetops.c,v 1.7 2015/09/12 16:46:12 guenther Exp $ */ 2 /*- 3 * Copyright (c) 1989, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the University nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * @(#)sigsetops.c 8.1 (Berkeley) 6/4/93 31 */ 32 33 #define _ANSI_LIBRARY 34 #include <errno.h> 35 #include <signal.h> 36 37 #undef sigemptyset 38 #undef sigfillset 39 #undef sigaddset 40 #undef sigdelset 41 #undef sigismember 42 43 int 44 sigemptyset(sigset_t *set) 45 { 46 *set = 0; 47 return (0); 48 } 49 DEF_WEAK(sigemptyset); 50 51 int 52 sigfillset(sigset_t *set) 53 { 54 *set = ~(sigset_t)0; 55 return (0); 56 } 57 DEF_WEAK(sigfillset); 58 59 int 60 sigaddset(sigset_t *set, int signo) 61 { 62 if (signo <= 0 || signo >= NSIG) { 63 errno = EINVAL; 64 return -1; 65 } 66 *set |= sigmask(signo); 67 return (0); 68 } 69 DEF_WEAK(sigaddset); 70 71 int 72 sigdelset(sigset_t *set, int signo) 73 { 74 if (signo <= 0 || signo >= NSIG) { 75 errno = EINVAL; 76 return -1; 77 } 78 *set &= ~sigmask(signo); 79 return (0); 80 } 81 DEF_WEAK(sigdelset); 82 83 int 84 sigismember(const sigset_t *set, int signo) 85 { 86 if (signo <= 0 || signo >= NSIG) { 87 errno = EINVAL; 88 return -1; 89 } 90 return ((*set & sigmask(signo)) != 0); 91 } 92 DEF_WEAK(sigismember); 93