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signal.h revision 1.7 
      1 /*	$NetBSD: signal.h,v 1.7 1995/05/28 03:10:06 jtc Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1991, 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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  *
     35  *	@(#)signal.h	8.3 (Berkeley) 3/30/94
     36  */
     37 
     38 #ifndef _USER_SIGNAL_H
     39 #define _USER_SIGNAL_H
     40 
     41 #include <sys/cdefs.h>
     42 #include <sys/signal.h>
     43 
     44 #if !defined(_ANSI_SOURCE)
     45 #include <sys/types.h>
     46 #endif
     47 
     48 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
     49 extern __const char *__const sys_signame[_NSIG];
     50 extern __const char *__const sys_siglist[_NSIG];
     51 #endif
     52 
     53 __BEGIN_DECLS
     54 int	raise __P((int));
     55 #ifndef	_ANSI_SOURCE
     56 int	kill __P((pid_t, int));
     57 int	sigaction __P((int, const struct sigaction *, struct sigaction *));
     58 int	sigaddset __P((sigset_t *, int));
     59 int	sigdelset __P((sigset_t *, int));
     60 int	sigemptyset __P((sigset_t *));
     61 int	sigfillset __P((sigset_t *));
     62 int	sigismember __P((const sigset_t *, int));
     63 int	sigpending __P((sigset_t *));
     64 int	sigprocmask __P((int, const sigset_t *, sigset_t *));
     65 int	sigsuspend __P((const sigset_t *));
     66 
     67 #if defined(__GNUC__) && defined(__STDC__)
     68 extern __inline int sigaddset(sigset_t *set, int signo) {
     69 	extern int errno;
     70 
     71 	if (signo <= 0 || signo >= _NSIG) {
     72 		errno = 22;			/* EINVAL */
     73 		return -1;
     74 	}
     75 	*set |= (1 << ((signo)-1));		/* sigmask(signo) */
     76 	return (0);
     77 }
     78 
     79 extern __inline int sigdelset(sigset_t *set, int signo) {
     80 	extern int errno;
     81 
     82 	if (signo <= 0 || signo >= _NSIG) {
     83 		errno = 22;			/* EINVAL */
     84 		return -1;
     85 	}
     86 	*set &= ~(1 << ((signo)-1));		/* sigmask(signo) */
     87 	return (0);
     88 }
     89 
     90 extern __inline int sigismember(const sigset_t *set, int signo) {
     91 	extern int errno;
     92 
     93 	if (signo <= 0 || signo >= _NSIG) {
     94 		errno = 22;			/* EINVAL */
     95 		return -1;
     96 	}
     97 	return ((*set & (1 << ((signo)-1))) != 0);
     98 }
     99 #endif
    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 #ifndef _POSIX_SOURCE
    106 int	killpg __P((pid_t, int));
    107 int	sigblock __P((int));
    108 int	siginterrupt __P((int, int));
    109 int	sigpause __P((int));
    110 int	sigreturn __P((struct sigcontext *));
    111 int	sigsetmask __P((int));
    112 int	sigstack __P((const struct sigstack *, struct sigstack *));
    113 int	sigvec __P((int, struct sigvec *, struct sigvec *));
    114 void	psignal __P((unsigned int, const char *));
    115 #endif	/* !_POSIX_SOURCE */
    116 #endif	/* !_ANSI_SOURCE */
    117 __END_DECLS
    118 
    119 #endif	/* !_USER_SIGNAL_H */
    120