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("$FreeBSD$");
37
38 #include <errno.h>
39 #include <signal.h>
40
41 int
sigaddset(sigset_t * set,int signo)42 sigaddset(sigset_t *set, int signo)
43 {
44
45 if (signo <= 0 || signo > _SIG_MAXSIG) {
46 errno = EINVAL;
47 return (-1);
48 }
49 set->__bits[_SIG_WORD(signo)] |= _SIG_BIT(signo);
50 return (0);
51 }
52
53 int
sigdelset(sigset_t * set,int signo)54 sigdelset(sigset_t *set, int signo)
55 {
56
57 if (signo <= 0 || signo > _SIG_MAXSIG) {
58 errno = EINVAL;
59 return (-1);
60 }
61 set->__bits[_SIG_WORD(signo)] &= ~_SIG_BIT(signo);
62 return (0);
63 }
64
65 int
sigemptyset(sigset_t * set)66 sigemptyset(sigset_t *set)
67 {
68 int i;
69
70 for (i = 0; i < _SIG_WORDS; i++)
71 set->__bits[i] = 0;
72 return (0);
73 }
74
75 int
sigfillset(sigset_t * set)76 sigfillset(sigset_t *set)
77 {
78 int i;
79
80 for (i = 0; i < _SIG_WORDS; i++)
81 set->__bits[i] = ~0U;
82 return (0);
83 }
84
85 int
sigorset(sigset_t * dest,const sigset_t * left,const sigset_t * right)86 sigorset(sigset_t *dest, const sigset_t *left, const sigset_t *right)
87 {
88 int i;
89
90 for (i = 0; i < _SIG_WORDS; i++)
91 dest->__bits[i] = left->__bits[i] | right->__bits[i];
92 return (0);
93 }
94
95 int
sigandset(sigset_t * dest,const sigset_t * left,const sigset_t * right)96 sigandset(sigset_t *dest, const sigset_t *left, const sigset_t *right)
97 {
98 int i;
99
100 for (i = 0; i < _SIG_WORDS; i++)
101 dest->__bits[i] = left->__bits[i] & right->__bits[i];
102 return (0);
103 }
104
105 int
sigisemptyset(const sigset_t * set)106 sigisemptyset(const sigset_t *set)
107 {
108 int i;
109
110 for (i = 0; i < _SIG_WORDS; i++)
111 if (set->__bits[i] != 0)
112 return (0);
113 return (1);
114 }
115
116 int
sigismember(const sigset_t * set,int signo)117 sigismember(const sigset_t *set, int signo)
118 {
119
120 if (signo <= 0 || signo > _SIG_MAXSIG) {
121 errno = EINVAL;
122 return (-1);
123 }
124 return ((set->__bits[_SIG_WORD(signo)] & _SIG_BIT(signo)) ? 1 : 0);
125 }
126