2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
32 #include <sys/cdefs.h>
33 __SCCSID("@(#)sigsetops.c 8.1 (Berkeley) 6/4/93");
38 sigaddset(sigset_t *set, int signo)
41 if (signo <= 0 || signo > _SIG_MAXSIG) {
45 set->__bits[_SIG_WORD(signo)] |= _SIG_BIT(signo);
50 sigdelset(sigset_t *set, int signo)
53 if (signo <= 0 || signo > _SIG_MAXSIG) {
57 set->__bits[_SIG_WORD(signo)] &= ~_SIG_BIT(signo);
62 sigemptyset(sigset_t *set)
66 for (i = 0; i < _SIG_WORDS; i++)
72 sigfillset(sigset_t *set)
76 for (i = 0; i < _SIG_WORDS; i++)
82 sigorset(sigset_t *dest, const sigset_t *left, const sigset_t *right)
86 for (i = 0; i < _SIG_WORDS; i++)
87 dest->__bits[i] = left->__bits[i] | right->__bits[i];
92 sigandset(sigset_t *dest, const sigset_t *left, const sigset_t *right)
96 for (i = 0; i < _SIG_WORDS; i++)
97 dest->__bits[i] = left->__bits[i] & right->__bits[i];
102 sigisemptyset(const sigset_t *set)
106 for (i = 0; i < _SIG_WORDS; i++)
107 if (set->__bits[i] != 0)
113 sigismember(const sigset_t *set, int signo)
116 if (signo <= 0 || signo > _SIG_MAXSIG) {
120 return ((set->__bits[_SIG_WORD(signo)] & _SIG_BIT(signo)) ? 1 : 0);