1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __SCCSID("@(#)sigsetops.c 8.1 (Berkeley) 6/4/93");
34 #include <errno.h>
35 #include <signal.h>
36
37 int
sigaddset(sigset_t * set,int signo)38 sigaddset(sigset_t *set, int signo)
39 {
40
41 if (signo <= 0 || signo > _SIG_MAXSIG) {
42 errno = EINVAL;
43 return (-1);
44 }
45 set->__bits[_SIG_WORD(signo)] |= _SIG_BIT(signo);
46 return (0);
47 }
48
49 int
sigdelset(sigset_t * set,int signo)50 sigdelset(sigset_t *set, int signo)
51 {
52
53 if (signo <= 0 || signo > _SIG_MAXSIG) {
54 errno = EINVAL;
55 return (-1);
56 }
57 set->__bits[_SIG_WORD(signo)] &= ~_SIG_BIT(signo);
58 return (0);
59 }
60
61 int
sigemptyset(sigset_t * set)62 sigemptyset(sigset_t *set)
63 {
64 int i;
65
66 for (i = 0; i < _SIG_WORDS; i++)
67 set->__bits[i] = 0;
68 return (0);
69 }
70
71 int
sigfillset(sigset_t * set)72 sigfillset(sigset_t *set)
73 {
74 int i;
75
76 for (i = 0; i < _SIG_WORDS; i++)
77 set->__bits[i] = ~0U;
78 return (0);
79 }
80
81 int
sigorset(sigset_t * dest,const sigset_t * left,const sigset_t * right)82 sigorset(sigset_t *dest, const sigset_t *left, const sigset_t *right)
83 {
84 int i;
85
86 for (i = 0; i < _SIG_WORDS; i++)
87 dest->__bits[i] = left->__bits[i] | right->__bits[i];
88 return (0);
89 }
90
91 int
sigandset(sigset_t * dest,const sigset_t * left,const sigset_t * right)92 sigandset(sigset_t *dest, const sigset_t *left, const sigset_t *right)
93 {
94 int i;
95
96 for (i = 0; i < _SIG_WORDS; i++)
97 dest->__bits[i] = left->__bits[i] & right->__bits[i];
98 return (0);
99 }
100
101 int
sigisemptyset(const sigset_t * set)102 sigisemptyset(const sigset_t *set)
103 {
104 int i;
105
106 for (i = 0; i < _SIG_WORDS; i++)
107 if (set->__bits[i] != 0)
108 return (0);
109 return (1);
110 }
111
112 int
sigismember(const sigset_t * set,int signo)113 sigismember(const sigset_t *set, int signo)
114 {
115
116 if (signo <= 0 || signo > _SIG_MAXSIG) {
117 errno = EINVAL;
118 return (-1);
119 }
120 return ((set->__bits[_SIG_WORD(signo)] & _SIG_BIT(signo)) ? 1 : 0);
121 }
122