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 __FBSDID("$FreeBSD$");
35
36 #include <errno.h>
37 #include <signal.h>
38
39 int
sigaddset(sigset_t * set,int signo)40 sigaddset(sigset_t *set, int signo)
41 {
42
43 if (signo <= 0 || signo > _SIG_MAXSIG) {
44 errno = EINVAL;
45 return (-1);
46 }
47 set->__bits[_SIG_WORD(signo)] |= _SIG_BIT(signo);
48 return (0);
49 }
50
51 int
sigdelset(sigset_t * set,int signo)52 sigdelset(sigset_t *set, int signo)
53 {
54
55 if (signo <= 0 || signo > _SIG_MAXSIG) {
56 errno = EINVAL;
57 return (-1);
58 }
59 set->__bits[_SIG_WORD(signo)] &= ~_SIG_BIT(signo);
60 return (0);
61 }
62
63 int
sigemptyset(sigset_t * set)64 sigemptyset(sigset_t *set)
65 {
66 int i;
67
68 for (i = 0; i < _SIG_WORDS; i++)
69 set->__bits[i] = 0;
70 return (0);
71 }
72
73 int
sigfillset(sigset_t * set)74 sigfillset(sigset_t *set)
75 {
76 int i;
77
78 for (i = 0; i < _SIG_WORDS; i++)
79 set->__bits[i] = ~0U;
80 return (0);
81 }
82
83 int
sigorset(sigset_t * dest,const sigset_t * left,const sigset_t * right)84 sigorset(sigset_t *dest, const sigset_t *left, const sigset_t *right)
85 {
86 int i;
87
88 for (i = 0; i < _SIG_WORDS; i++)
89 dest->__bits[i] = left->__bits[i] | right->__bits[i];
90 return (0);
91 }
92
93 int
sigandset(sigset_t * dest,const sigset_t * left,const sigset_t * right)94 sigandset(sigset_t *dest, const sigset_t *left, const sigset_t *right)
95 {
96 int i;
97
98 for (i = 0; i < _SIG_WORDS; i++)
99 dest->__bits[i] = left->__bits[i] & right->__bits[i];
100 return (0);
101 }
102
103 int
sigisemptyset(const sigset_t * set)104 sigisemptyset(const sigset_t *set)
105 {
106 int i;
107
108 for (i = 0; i < _SIG_WORDS; i++)
109 if (set->__bits[i] != 0)
110 return (0);
111 return (1);
112 }
113
114 int
sigismember(const sigset_t * set,int signo)115 sigismember(const sigset_t *set, int signo)
116 {
117
118 if (signo <= 0 || signo > _SIG_MAXSIG) {
119 errno = EINVAL;
120 return (-1);
121 }
122 return ((set->__bits[_SIG_WORD(signo)] & _SIG_BIT(signo)) ? 1 : 0);
123 }
124