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 #if 0 38 static char sccsid[] = "@(#)sigsetops.c 8.1 (Berkeley) 6/4/93"; 39 #endif 40 static const char rcsid[] = 41 "$FreeBSD$"; 42 #endif /* LIBC_SCCS and not lint */ 43 44 #include <errno.h> 45 #include <signal.h> 46 47 int 48 sigaddset(set, signo) 49 sigset_t *set; 50 int signo; 51 { 52 53 if (signo <= 0 || signo > _SIG_MAXSIG) { 54 errno = EINVAL; 55 return (-1); 56 } 57 set->__bits[_SIG_WORD(signo)] |= _SIG_BIT(signo); 58 return (0); 59 } 60 61 int 62 sigdelset(set, signo) 63 sigset_t *set; 64 int signo; 65 { 66 67 if (signo <= 0 || signo > _SIG_MAXSIG) { 68 errno = EINVAL; 69 return (-1); 70 } 71 set->__bits[_SIG_WORD(signo)] &= ~_SIG_BIT(signo); 72 return (0); 73 } 74 75 int 76 sigemptyset(set) 77 sigset_t *set; 78 { 79 int i; 80 81 for (i = 0; i < _SIG_WORDS; i++) 82 set->__bits[i] = 0; 83 return (0); 84 } 85 86 int 87 sigfillset(set) 88 sigset_t *set; 89 { 90 int i; 91 92 for (i = 0; i < _SIG_WORDS; i++) 93 set->__bits[i] = ~0U; 94 return (0); 95 } 96 97 int 98 sigismember(set, signo) 99 const sigset_t *set; 100 int signo; 101 { 102 103 if (signo <= 0 || signo > _SIG_MAXSIG) { 104 errno = EINVAL; 105 return (-1); 106 } 107 return ((set->__bits[_SIG_WORD(signo)] & _SIG_BIT(signo)) ? 1 : 0); 108 } 109