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 <errno.h>
33 #include <signal.h>
34
35 int
sigaddset(sigset_t * set,int signo)36 sigaddset(sigset_t *set, int signo)
37 {
38
39 if (signo <= 0 || signo > _SIG_MAXSIG) {
40 errno = EINVAL;
41 return (-1);
42 }
43 set->__bits[_SIG_WORD(signo)] |= _SIG_BIT(signo);
44 return (0);
45 }
46
47 int
sigdelset(sigset_t * set,int signo)48 sigdelset(sigset_t *set, int signo)
49 {
50
51 if (signo <= 0 || signo > _SIG_MAXSIG) {
52 errno = EINVAL;
53 return (-1);
54 }
55 set->__bits[_SIG_WORD(signo)] &= ~_SIG_BIT(signo);
56 return (0);
57 }
58
59 int
sigemptyset(sigset_t * set)60 sigemptyset(sigset_t *set)
61 {
62 int i;
63
64 for (i = 0; i < _SIG_WORDS; i++)
65 set->__bits[i] = 0;
66 return (0);
67 }
68
69 int
sigfillset(sigset_t * set)70 sigfillset(sigset_t *set)
71 {
72 int i;
73
74 for (i = 0; i < _SIG_WORDS; i++)
75 set->__bits[i] = ~0U;
76 return (0);
77 }
78
79 int
sigorset(sigset_t * dest,const sigset_t * left,const sigset_t * right)80 sigorset(sigset_t *dest, const sigset_t *left, const sigset_t *right)
81 {
82 int i;
83
84 for (i = 0; i < _SIG_WORDS; i++)
85 dest->__bits[i] = left->__bits[i] | right->__bits[i];
86 return (0);
87 }
88
89 int
sigandset(sigset_t * dest,const sigset_t * left,const sigset_t * right)90 sigandset(sigset_t *dest, const sigset_t *left, const sigset_t *right)
91 {
92 int i;
93
94 for (i = 0; i < _SIG_WORDS; i++)
95 dest->__bits[i] = left->__bits[i] & right->__bits[i];
96 return (0);
97 }
98
99 int
sigisemptyset(const sigset_t * set)100 sigisemptyset(const sigset_t *set)
101 {
102 int i;
103
104 for (i = 0; i < _SIG_WORDS; i++)
105 if (set->__bits[i] != 0)
106 return (0);
107 return (1);
108 }
109
110 int
sigismember(const sigset_t * set,int signo)111 sigismember(const sigset_t *set, int signo)
112 {
113
114 if (signo <= 0 || signo > _SIG_MAXSIG) {
115 errno = EINVAL;
116 return (-1);
117 }
118 return ((set->__bits[_SIG_WORD(signo)] & _SIG_BIT(signo)) ? 1 : 0);
119 }
120