1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)sigsetops.c 8.1 (Berkeley) 6/4/93 32 */ 33 34 #if defined(LIBC_SCCS) && !defined(lint) 35 static char sccsid[] = "@(#)sigsetops.c 8.1 (Berkeley) 6/4/93"; 36 #endif /* LIBC_SCCS and not lint */ 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 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