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)
33 static 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: stable/9/lib/libc/gen/sigsetops.c 165903 2007-01-09 00:28:16Z imp $");
37
38 #include <errno.h>
39 #include <signal.h>
40
41 int
sigaddset(set,signo)42 sigaddset(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
55 int
sigdelset(set,signo)56 sigdelset(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
69 int
sigemptyset(set)70 sigemptyset(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
80 int
sigfillset(set)81 sigfillset(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
91 int
sigismember(set,signo)92 sigismember(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