xref: /openbsd-src/include/signal.h (revision db3296cf5c1dd9058ceecc3a29fe4aaa0bd26000)
1 /*	$OpenBSD: signal.h,v 1.7 2003/06/02 19:34:12 millert 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 !defined(_ANSI_SOURCE)
41 #include <sys/types.h>
42 #endif
43 
44 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
45 extern __const char *__const sys_signame[_NSIG];
46 extern __const char *__const sys_siglist[_NSIG];
47 #endif
48 
49 __BEGIN_DECLS
50 int	raise(int);
51 #ifndef	_ANSI_SOURCE
52 int	kill(pid_t, int);
53 int	sigaction(int, const struct sigaction *, struct sigaction *);
54 int	sigaddset(sigset_t *, int);
55 int	sigdelset(sigset_t *, int);
56 int	sigemptyset(sigset_t *);
57 int	sigfillset(sigset_t *);
58 int	sigismember(const sigset_t *, int);
59 int	sigpending(sigset_t *);
60 int	sigprocmask(int, const sigset_t *, sigset_t *);
61 int	sigsuspend(const sigset_t *);
62 
63 #if defined(__GNUC__)
64 extern __inline int sigaddset(sigset_t *set, int signo) {
65 	extern int errno;
66 
67 	if (signo <= 0 || signo >= _NSIG) {
68 		errno = 22;			/* EINVAL */
69 		return -1;
70 	}
71 	*set |= (1 << ((signo)-1));		/* sigmask(signo) */
72 	return (0);
73 }
74 
75 extern __inline int sigdelset(sigset_t *set, int signo) {
76 	extern int errno;
77 
78 	if (signo <= 0 || signo >= _NSIG) {
79 		errno = 22;			/* EINVAL */
80 		return -1;
81 	}
82 	*set &= ~(1 << ((signo)-1));		/* sigmask(signo) */
83 	return (0);
84 }
85 
86 extern __inline int sigismember(const sigset_t *set, int signo) {
87 	extern int errno;
88 
89 	if (signo <= 0 || signo >= _NSIG) {
90 		errno = 22;			/* EINVAL */
91 		return -1;
92 	}
93 	return ((*set & (1 << ((signo)-1))) != 0);
94 }
95 #endif
96 
97 /* List definitions after function declarations, or Reiser cpp gets upset. */
98 #define	sigemptyset(set)	(*(set) = 0, 0)
99 #define	sigfillset(set)		(*(set) = ~(sigset_t)0, 0)
100 
101 #ifndef _POSIX_SOURCE
102 int	killpg(pid_t, int);
103 int	sigblock(int);
104 int	siginterrupt(int, int);
105 int	sigpause(int);
106 int	sigreturn(struct sigcontext *);
107 int	sigsetmask(int);
108 int	sigstack(const struct sigstack *, struct sigstack *);
109 int	sigaltstack(const struct sigaltstack *, struct sigaltstack *);
110 int	sigvec(int, struct sigvec *, struct sigvec *);
111 void	psignal(unsigned int, const char *);
112 int	sigwait(const sigset_t *, int *);
113 #endif	/* !_POSIX_SOURCE */
114 #endif	/* !_ANSI_SOURCE */
115 __END_DECLS
116 
117 #endif	/* !_USER_SIGNAL_H */
118