1 /* $OpenBSD: sigsetops.c,v 1.7 2015/09/12 16:46:12 guenther Exp $ */
2 /*-
3 * Copyright (c) 1989, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the University nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * @(#)sigsetops.c 8.1 (Berkeley) 6/4/93
31 */
32
33 #define _ANSI_LIBRARY
34 #include <errno.h>
35 #include <signal.h>
36
37 #undef sigemptyset
38 #undef sigfillset
39 #undef sigaddset
40 #undef sigdelset
41 #undef sigismember
42
43 int
sigemptyset(sigset_t * set)44 sigemptyset(sigset_t *set)
45 {
46 *set = 0;
47 return (0);
48 }
49 DEF_WEAK(sigemptyset);
50
51 int
sigfillset(sigset_t * set)52 sigfillset(sigset_t *set)
53 {
54 *set = ~(sigset_t)0;
55 return (0);
56 }
57 DEF_WEAK(sigfillset);
58
59 int
sigaddset(sigset_t * set,int signo)60 sigaddset(sigset_t *set, int signo)
61 {
62 if (signo <= 0 || signo >= NSIG) {
63 errno = EINVAL;
64 return -1;
65 }
66 *set |= sigmask(signo);
67 return (0);
68 }
69 DEF_WEAK(sigaddset);
70
71 int
sigdelset(sigset_t * set,int signo)72 sigdelset(sigset_t *set, int signo)
73 {
74 if (signo <= 0 || signo >= NSIG) {
75 errno = EINVAL;
76 return -1;
77 }
78 *set &= ~sigmask(signo);
79 return (0);
80 }
81 DEF_WEAK(sigdelset);
82
83 int
sigismember(const sigset_t * set,int signo)84 sigismember(const sigset_t *set, int signo)
85 {
86 if (signo <= 0 || signo >= NSIG) {
87 errno = EINVAL;
88 return -1;
89 }
90 return ((*set & sigmask(signo)) != 0);
91 }
92 DEF_WEAK(sigismember);
93