signal.h revision 1.20 
1/*	$OpenBSD: signal.h,v 1.20 2012/12/05 23:19:57 deraadt 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
46extern __const char *__const sys_signame[_NSIG];
47extern __const char *__const sys_siglist[_NSIG];
48#endif
49
50int	raise(int);
51#if __BSD_VISIBLE || __POSIX_VISIBLE || __XPG_VISIBLE
52#if __BSD_VISIBLE || (__XPG_VISIBLE >= 500 && __XPG_VISIBLE < 700)
53void	(*bsd_signal(int, void (*)(int)))(int);
54#endif
55int	kill(pid_t, int);
56int	sigaction(int, const struct sigaction *__restrict,
57	    struct sigaction *__restrict);
58int	sigaddset(sigset_t *, int);
59int	sigdelset(sigset_t *, int);
60int	sigemptyset(sigset_t *);
61int	sigfillset(sigset_t *);
62int	sigismember(const sigset_t *, int);
63int	sigpending(sigset_t *);
64int	sigprocmask(int, const sigset_t *__restrict, sigset_t *__restrict);
65#if __POSIX_VISIBLE >= 199506
66int	pthread_sigmask(int, const sigset_t *__restrict, sigset_t *__restrict);
67#endif
68int	sigsuspend(const sigset_t *);
69
70#if !defined(_ANSI_LIBRARY) && !defined(lint)
71
72extern int *__errno(void);
73
74__only_inline int sigaddset(sigset_t *__set, int __signo) {
75	if (__signo <= 0 || __signo >= _NSIG) {
76		*__errno() = 22;		/* EINVAL */
77		return -1;
78	}
79	*__set |= (1U << ((__signo)-1));	/* sigmask(__signo) */
80	return (0);
81}
82
83__only_inline int sigdelset(sigset_t *__set, int __signo) {
84	if (__signo <= 0 || __signo >= _NSIG) {
85		*__errno() = 22;		/* EINVAL */
86		return -1;
87	}
88	*__set &= ~(1U << ((__signo)-1));	/* sigmask(__signo) */
89	return (0);
90}
91
92__only_inline int sigismember(const sigset_t *__set, int __signo) {
93	if (__signo <= 0 || __signo >= _NSIG) {
94		*__errno() = 22;		/* EINVAL */
95		return -1;
96	}
97	return ((*__set & (1U << ((__signo)-1))) != 0);
98}
99#endif /* !_ANSI_LIBRARY && !lint */
100
101/* List definitions after function declarations, or Reiser cpp gets upset. */
102#define	sigemptyset(set)	(*(set) = 0, 0)
103#define	sigfillset(set)		(*(set) = ~(sigset_t)0, 0)
104
105#if __BSD_VISIBLE || __XPG_VISIBLE >= 420
106int	killpg(pid_t, int);
107int	siginterrupt(int, int);
108int	sigpause(int);
109int	sigaltstack(const struct sigaltstack *__restrict,
110	    struct sigaltstack *__restrict);
111#if __BSD_VISIBLE
112int	sigblock(int);
113int	sigreturn(struct sigcontext *);
114int	sigsetmask(int);
115int	sigvec(int, struct sigvec *, struct sigvec *);
116#endif
117#endif /* __BSD_VISIBLE || __XPG_VISIBLE >= 420 */
118#if __BSD_VISIBLE ||  __POSIX_VISIBLE >= 199309 || __XPG_VISIBLE >= 500
119int	sigwait(const sigset_t *__restrict, int *__restrict);
120#endif
121#if __BSD_VISIBLE ||  __POSIX_VISIBLE >= 200809
122void	psignal(unsigned int, const char *);
123#endif
124#endif /* __BSD_VISIBLE || __POSIX_VISIBLE || __XPG_VISIBLE */
125__END_DECLS
126
127#endif	/* !_USER_SIGNAL_H */
128