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 32 #include <sys/cdefs.h> 33 __SCCSID("@(#)sigsetops.c 8.1 (Berkeley) 6/4/93"); 34 __FBSDID("$FreeBSD$"); 35 36 #include <errno.h> 37 #include <signal.h> 38 39 int 40 sigaddset(sigset_t *set, int signo) 41 { 42 43 if (signo <= 0 || signo > _SIG_MAXSIG) { 44 errno = EINVAL; 45 return (-1); 46 } 47 set->__bits[_SIG_WORD(signo)] |= _SIG_BIT(signo); 48 return (0); 49 } 50 51 int 52 sigdelset(sigset_t *set, int signo) 53 { 54 55 if (signo <= 0 || signo > _SIG_MAXSIG) { 56 errno = EINVAL; 57 return (-1); 58 } 59 set->__bits[_SIG_WORD(signo)] &= ~_SIG_BIT(signo); 60 return (0); 61 } 62 63 int 64 sigemptyset(sigset_t *set) 65 { 66 int i; 67 68 for (i = 0; i < _SIG_WORDS; i++) 69 set->__bits[i] = 0; 70 return (0); 71 } 72 73 int 74 sigfillset(sigset_t *set) 75 { 76 int i; 77 78 for (i = 0; i < _SIG_WORDS; i++) 79 set->__bits[i] = ~0U; 80 return (0); 81 } 82 83 int 84 sigorset(sigset_t *dest, const sigset_t *left, const sigset_t *right) 85 { 86 int i; 87 88 for (i = 0; i < _SIG_WORDS; i++) 89 dest->__bits[i] = left->__bits[i] | right->__bits[i]; 90 return (0); 91 } 92 93 int 94 sigandset(sigset_t *dest, const sigset_t *left, const sigset_t *right) 95 { 96 int i; 97 98 for (i = 0; i < _SIG_WORDS; i++) 99 dest->__bits[i] = left->__bits[i] & right->__bits[i]; 100 return (0); 101 } 102 103 int 104 sigisemptyset(const sigset_t *set) 105 { 106 int i; 107 108 for (i = 0; i < _SIG_WORDS; i++) 109 if (set->__bits[i] != 0) 110 return (0); 111 return (1); 112 } 113 114 int 115 sigismember(const sigset_t *set, int signo) 116 { 117 118 if (signo <= 0 || signo > _SIG_MAXSIG) { 119 errno = EINVAL; 120 return (-1); 121 } 122 return ((set->__bits[_SIG_WORD(signo)] & _SIG_BIT(signo)) ? 1 : 0); 123 } 124