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)
33static 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
41int
42sigaddset(set, signo)
43	sigset_t *set;
44	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
55int
56sigdelset(set, signo)
57	sigset_t *set;
58	int signo;
59{
60
61	if (signo <= 0 || signo > _SIG_MAXSIG) {
62		errno = EINVAL;
63		return (-1);
64	}
65	set->__bits[_SIG_WORD(signo)] &= ~_SIG_BIT(signo);
66	return (0);
67}
68
69int
70sigemptyset(set)
71	sigset_t *set;
72{
73	int i;
74
75	for (i = 0; i < _SIG_WORDS; i++)
76		set->__bits[i] = 0;
77	return (0);
78}
79
80int
81sigfillset(set)
82	sigset_t *set;
83{
84	int i;
85
86	for (i = 0; i < _SIG_WORDS; i++)
87		set->__bits[i] = ~0U;
88	return (0);
89}
90
91int
92sigismember(set, signo)
93	const sigset_t *set;
94	int signo;
95{
96
97	if (signo <= 0 || signo > _SIG_MAXSIG) {
98		errno = EINVAL;
99		return (-1);
100	}
101	return ((set->__bits[_SIG_WORD(signo)] & _SIG_BIT(signo)) ? 1 : 0);
102}
103