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 1.2 2003/06/17 04:26:42 dillon Exp $ 38 */ 39 40 #include <errno.h> 41 #include <signal.h> 42 43 int 44 sigaddset(set, signo) 45 sigset_t *set; 46 int signo; 47 { 48 49 if (signo <= 0 || signo > _SIG_MAXSIG) { 50 errno = EINVAL; 51 return (-1); 52 } 53 set->__bits[_SIG_WORD(signo)] |= _SIG_BIT(signo); 54 return (0); 55 } 56 57 int 58 sigdelset(set, signo) 59 sigset_t *set; 60 int signo; 61 { 62 63 if (signo <= 0 || signo > _SIG_MAXSIG) { 64 errno = EINVAL; 65 return (-1); 66 } 67 set->__bits[_SIG_WORD(signo)] &= ~_SIG_BIT(signo); 68 return (0); 69 } 70 71 int 72 sigemptyset(set) 73 sigset_t *set; 74 { 75 int i; 76 77 for (i = 0; i < _SIG_WORDS; i++) 78 set->__bits[i] = 0; 79 return (0); 80 } 81 82 int 83 sigfillset(set) 84 sigset_t *set; 85 { 86 int i; 87 88 for (i = 0; i < _SIG_WORDS; i++) 89 set->__bits[i] = ~0U; 90 return (0); 91 } 92 93 int 94 sigismember(set, signo) 95 const sigset_t *set; 96 int signo; 97 { 98 99 if (signo <= 0 || signo > _SIG_MAXSIG) { 100 errno = EINVAL; 101 return (-1); 102 } 103 return ((set->__bits[_SIG_WORD(signo)] & _SIG_BIT(signo)) ? 1 : 0); 104 } 105