signal.h revision 51794 
1/*-
2 * Copyright (c) 1991, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	@(#)signal.h	8.3 (Berkeley) 3/30/94
34 *
35 * $FreeBSD: head/include/signal.h 51794 1999-09-29 15:18:46Z marcel $
36 */
37
38#ifndef _SIGNAL_H_
39#define	_SIGNAL_H_
40
41#include <sys/cdefs.h>
42#include <sys/_posix.h>
43#include <machine/ansi.h>
44#include <sys/signal.h>
45#include <sys/time.h>
46
47#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
48extern __const char *__const sys_signame[NSIG];
49extern __const char *__const sys_siglist[NSIG];
50extern __const int sys_nsig;
51#endif
52
53__BEGIN_DECLS
54int	raise __P((int));
55#ifndef	_ANSI_SOURCE
56int	kill __P((_BSD_PID_T_, int));
57int	sigaction __P((int, const struct sigaction *, struct sigaction *));
58int	sigaddset __P((sigset_t *, int));
59int	sigdelset __P((sigset_t *, int));
60int	sigemptyset __P((sigset_t *));
61int	sigfillset __P((sigset_t *));
62int	sigismember __P((const sigset_t *, int));
63int	sigpending __P((sigset_t *));
64int	sigprocmask __P((int, const sigset_t *, sigset_t *));
65int	sigsuspend __P((const sigset_t *));
66int	sigwait __P((const sigset_t *, int *));
67
68
69#ifdef _P1003_1B_VISIBLE
70
71__BEGIN_DECLS
72int sigqueue __P((_BSD_PID_T_, int, const union sigval));
73int sigtimedwait __P((const sigset_t *, siginfo_t *, const struct timespec *));
74int sigwaitinfo __P((const sigset_t *, siginfo_t *));
75__END_DECLS
76
77#endif
78#ifndef _POSIX_SOURCE
79int	killpg __P((_BSD_PID_T_, int));
80int	sigaltstack __P((const stack_t *, stack_t *));
81int	sigblock __P((int));
82int	siginterrupt __P((int, int));
83int	sigpause __P((int));
84int	sigreturn __P((ucontext_t *));
85int	sigsetmask __P((int));
86int	sigstack __P((const struct sigstack *, struct sigstack *));
87int	sigvec __P((int, struct sigvec *, struct sigvec *));
88void	psignal __P((unsigned int, const char *));
89#endif /* !_POSIX_SOURCE */
90#endif /* !_ANSI_SOURCE */
91__END_DECLS
92
93#ifndef _ANSI_SOURCE
94/* List definitions after function declarations, or Reiser cpp gets upset. */
95extern __inline int sigaddset(sigset_t *set, int signo)
96{
97
98	if (signo <= 0 || signo > _SIG_MAXSIG) {
99		/* errno = EINVAL; */
100		return (-1);
101	}
102	set->__bits[_SIG_WORD(signo)] |= _SIG_BIT(signo);
103	return (0);
104}
105
106extern __inline int sigdelset(sigset_t *set, int signo)
107{
108
109	if (signo <= 0 || signo > _SIG_MAXSIG) {
110		/* errno = EINVAL; */
111		return (-1);
112	}
113	set->__bits[_SIG_WORD(signo)] &= ~_SIG_BIT(signo);
114	return (0);
115}
116
117extern __inline int sigemptyset(sigset_t *set)
118{
119	int i;
120
121	for (i = 0; i < _SIG_WORDS; i++)
122		set->__bits[i] = 0;
123	return (0);
124}
125
126extern __inline int sigfillset(sigset_t *set)
127{
128	int i;
129
130	for (i = 0; i < _SIG_WORDS; i++)
131		set->__bits[i] = ~(unsigned int)0;
132	return (0);
133}
134
135extern __inline int sigismember(__const sigset_t *set, int signo)
136{
137
138	if (signo <= 0 || signo > _SIG_MAXSIG) {
139		/* errno = EINVAL; */
140		return (-1);
141	}
142	return ((set->__bits[_SIG_WORD(signo)] & _SIG_BIT(signo)) ? 1 : 0);
143}
144#endif /* !_ANSI_SOURCE */
145
146#endif /* !_SIGNAL_H_ */
147