1 /* $OpenBSD: signal.h,v 1.26 2018/05/30 13:20:38 bluhm Exp $ */
2 /* $NetBSD: signal.h,v 1.8 1996/02/29 00:04:57 jtc Exp $ */
3
4 /*-
5 * Copyright (c) 1991, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)signal.h 8.3 (Berkeley) 3/30/94
33 */
34
35 #ifndef _USER_SIGNAL_H
36 #define _USER_SIGNAL_H
37
38 #include <sys/signal.h>
39
40 #if __BSD_VISIBLE || __POSIX_VISIBLE || __XPG_VISIBLE
41 #include <sys/types.h>
42 #endif
43
44 __BEGIN_DECLS
45 #if __BSD_VISIBLE
46 extern const char *const sys_signame[_NSIG];
47 extern const char *const sys_siglist[_NSIG];
48 #endif
49
50 int raise(int);
51 #if __BSD_VISIBLE || __POSIX_VISIBLE || __XPG_VISIBLE
52 #if __BSD_VISIBLE || (__XPG_VISIBLE >= 500 && __XPG_VISIBLE < 700)
53 void (*bsd_signal(int, void (*)(int)))(int);
54 #endif
55 int kill(pid_t, int);
56 int sigaction(int, const struct sigaction *__restrict,
57 struct sigaction *__restrict);
58 int sigaddset(sigset_t *, int);
59 int sigdelset(sigset_t *, int);
60 int sigemptyset(sigset_t *);
61 int sigfillset(sigset_t *);
62 int sigismember(const sigset_t *, int);
63 int sigpending(sigset_t *);
64 int sigprocmask(int, const sigset_t *__restrict, sigset_t *__restrict);
65 #if __POSIX_VISIBLE >= 199506
66 int pthread_sigmask(int, const sigset_t *__restrict, sigset_t *__restrict);
67 #endif
68 int sigsuspend(const sigset_t *);
69
70 #if !defined(_ANSI_LIBRARY)
71
72 extern int *__errno(void);
73
sigaddset(sigset_t * __set,int __signo)74 __only_inline int sigaddset(sigset_t *__set, int __signo)
75 {
76 if (__signo <= 0 || __signo >= _NSIG) {
77 *__errno() = 22; /* EINVAL */
78 return -1;
79 }
80 *__set |= (1U << ((__signo)-1)); /* sigmask(__signo) */
81 return (0);
82 }
83
sigdelset(sigset_t * __set,int __signo)84 __only_inline int sigdelset(sigset_t *__set, int __signo)
85 {
86 if (__signo <= 0 || __signo >= _NSIG) {
87 *__errno() = 22; /* EINVAL */
88 return -1;
89 }
90 *__set &= ~(1U << ((__signo)-1)); /* sigmask(__signo) */
91 return (0);
92 }
93
sigismember(const sigset_t * __set,int __signo)94 __only_inline int sigismember(const sigset_t *__set, int __signo)
95 {
96 if (__signo <= 0 || __signo >= _NSIG) {
97 *__errno() = 22; /* EINVAL */
98 return -1;
99 }
100 return ((*__set & (1U << ((__signo)-1))) != 0);
101 }
102
sigemptyset(sigset_t * __set)103 __only_inline int sigemptyset(sigset_t *__set)
104 {
105 *__set = 0;
106 return (0);
107 }
108
sigfillset(sigset_t * __set)109 __only_inline int sigfillset(sigset_t *__set)
110 {
111 *__set = ~(sigset_t)0;
112 return (0);
113 }
114
115 #endif /* !_ANSI_LIBRARY */
116
117 #if __BSD_VISIBLE || __XPG_VISIBLE >= 420
118 int killpg(pid_t, int);
119 int siginterrupt(int, int);
120 int sigaltstack(const struct sigaltstack *__restrict,
121 struct sigaltstack *__restrict);
122 #if __BSD_VISIBLE
123 int sigblock(int);
124 /* This is the traditional BSD sigpause() and not the XPG/POSIX sigpause(). */
125 int sigpause(int);
126 int sigsetmask(int);
127 int sigvec(int, struct sigvec *, struct sigvec *);
128 int thrkill(pid_t _tid, int _signum, void *_tcb);
129 #endif
130 #endif /* __BSD_VISIBLE || __XPG_VISIBLE >= 420 */
131 #if __BSD_VISIBLE || __POSIX_VISIBLE >= 199309 || __XPG_VISIBLE >= 500
132 int sigwait(const sigset_t *__restrict, int *__restrict);
133 #endif
134 #if __BSD_VISIBLE || __POSIX_VISIBLE >= 200809
135 void psignal(unsigned int, const char *);
136 #endif
137 #endif /* __BSD_VISIBLE || __POSIX_VISIBLE || __XPG_VISIBLE */
138 __END_DECLS
139
140 #endif /* !_USER_SIGNAL_H */
141