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 * @(#)sigsetops.c 8.1 (Berkeley) 6/4/93 36 * $FreeBSD: src/lib/libc/gen/sigsetops.c,v 1.7 1999/10/02 19:37:14 marcel Exp $ 37 * $DragonFly: src/lib/libc/gen/sigsetops.c,v 1.3 2005/11/13 00:07:42 swildner Exp $ 38 */ 39 40 #include <errno.h> 41 #include <signal.h> 42 43 int 44 sigaddset(sigset_t *set, int signo) 45 { 46 47 if (signo <= 0 || signo > _SIG_MAXSIG) { 48 errno = EINVAL; 49 return (-1); 50 } 51 set->__bits[_SIG_WORD(signo)] |= _SIG_BIT(signo); 52 return (0); 53 } 54 55 int 56 sigdelset(sigset_t *set, int signo) 57 { 58 59 if (signo <= 0 || signo > _SIG_MAXSIG) { 60 errno = EINVAL; 61 return (-1); 62 } 63 set->__bits[_SIG_WORD(signo)] &= ~_SIG_BIT(signo); 64 return (0); 65 } 66 67 int 68 sigemptyset(sigset_t *set) 69 { 70 int i; 71 72 for (i = 0; i < _SIG_WORDS; i++) 73 set->__bits[i] = 0; 74 return (0); 75 } 76 77 int 78 sigfillset(sigset_t *set) 79 { 80 int i; 81 82 for (i = 0; i < _SIG_WORDS; i++) 83 set->__bits[i] = ~0U; 84 return (0); 85 } 86 87 int 88 sigismember(const sigset_t *set, int signo) 89 { 90 91 if (signo <= 0 || signo > _SIG_MAXSIG) { 92 errno = EINVAL; 93 return (-1); 94 } 95 return ((set->__bits[_SIG_WORD(signo)] & _SIG_BIT(signo)) ? 1 : 0); 96 } 97