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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)sigsetops.c 8.1 (Berkeley) 6/4/93 30 */ 31 32 #if defined(LIBC_SCCS) && !defined(lint) 33 static char sccsid[] = "@(#)sigsetops.c 8.1 (Berkeley) 6/4/93"; 34 #endif /* LIBC_SCCS and not lint */ 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <errno.h> 39 #include <signal.h> 40 41 int 42 sigaddset(sigset_t *set, int signo) 43 { 44 45 if (signo <= 0 || signo > _SIG_MAXSIG) { 46 errno = EINVAL; 47 return (-1); 48 } 49 set->__bits[_SIG_WORD(signo)] |= _SIG_BIT(signo); 50 return (0); 51 } 52 53 int 54 sigdelset(sigset_t *set, int signo) 55 { 56 57 if (signo <= 0 || signo > _SIG_MAXSIG) { 58 errno = EINVAL; 59 return (-1); 60 } 61 set->__bits[_SIG_WORD(signo)] &= ~_SIG_BIT(signo); 62 return (0); 63 } 64 65 int 66 sigemptyset(sigset_t *set) 67 { 68 int i; 69 70 for (i = 0; i < _SIG_WORDS; i++) 71 set->__bits[i] = 0; 72 return (0); 73 } 74 75 int 76 sigfillset(sigset_t *set) 77 { 78 int i; 79 80 for (i = 0; i < _SIG_WORDS; i++) 81 set->__bits[i] = ~0U; 82 return (0); 83 } 84 85 int 86 sigismember(const sigset_t *set, int signo) 87 { 88 89 if (signo <= 0 || signo > _SIG_MAXSIG) { 90 errno = EINVAL; 91 return (-1); 92 } 93 return ((set->__bits[_SIG_WORD(signo)] & _SIG_BIT(signo)) ? 1 : 0); 94 } 95