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 * 3. 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 * @(#)sigsetops.c 8.1 (Berkeley) 6/4/93
32 * $FreeBSD: src/lib/libc/gen/sigsetops.c,v 1.7 1999/10/02 19:37:14 marcel Exp $
33 * $DragonFly: src/lib/libc/gen/sigsetops.c,v 1.3 2005/11/13 00:07:42 swildner Exp $
34 */
35
36 #include <errno.h>
37 #include <signal.h>
38
39 int
sigaddset(sigset_t * set,int signo)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
sigdelset(sigset_t * set,int signo)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
sigemptyset(sigset_t * set)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
sigfillset(sigset_t * set)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
sigismember(const sigset_t * set,int signo)84 sigismember(const sigset_t *set, int signo)
85 {
86
87 if (signo <= 0 || signo > _SIG_MAXSIG) {
88 errno = EINVAL;
89 return (-1);
90 }
91 return ((set->__bits[_SIG_WORD(signo)] & _SIG_BIT(signo)) ? 1 : 0);
92 }
93