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 sccsid[] = "@(#)sigsetops.c 8.1 (Berkeley) 6/4/93"; 38 #endif /* LIBC_SCCS and not lint */ 39 #include <sys/cdefs.h> 40 __FBSDID("$FreeBSD$"); 41 42 #include <errno.h> 43 #include <signal.h> 44 45 int 46 sigaddset(set, signo) 47 sigset_t *set; 48 int signo; 49 { 50 51 if (signo <= 0 || signo > _SIG_MAXSIG) { 52 errno = EINVAL; 53 return (-1); 54 } 55 set->__bits[_SIG_WORD(signo)] |= _SIG_BIT(signo); 56 return (0); 57 } 58 59 int 60 sigdelset(set, signo) 61 sigset_t *set; 62 int signo; 63 { 64 65 if (signo <= 0 || signo > _SIG_MAXSIG) { 66 errno = EINVAL; 67 return (-1); 68 } 69 set->__bits[_SIG_WORD(signo)] &= ~_SIG_BIT(signo); 70 return (0); 71 } 72 73 int 74 sigemptyset(set) 75 sigset_t *set; 76 { 77 int i; 78 79 for (i = 0; i < _SIG_WORDS; i++) 80 set->__bits[i] = 0; 81 return (0); 82 } 83 84 int 85 sigfillset(set) 86 sigset_t *set; 87 { 88 int i; 89 90 for (i = 0; i < _SIG_WORDS; i++) 91 set->__bits[i] = ~0U; 92 return (0); 93 } 94 95 int 96 sigismember(set, signo) 97 const sigset_t *set; 98 int signo; 99 { 100 101 if (signo <= 0 || signo > _SIG_MAXSIG) { 102 errno = EINVAL; 103 return (-1); 104 } 105 return ((set->__bits[_SIG_WORD(signo)] & _SIG_BIT(signo)) ? 1 : 0); 106 } 107