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signal.h revision 1.12 
      1 /*	$NetBSD: signal.h,v 1.12 1998/05/25 21:55:48 kleink 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 _SIGNAL_H_
     39 #define _SIGNAL_H_
     40 
     41 #include <sys/cdefs.h>
     42 #include <sys/featuretest.h>
     43 
     44 #if !defined(_ANSI_SOURCE)
     45 #include <sys/types.h>
     46 #endif
     47 
     48 #include <sys/signal.h>
     49 
     50 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \
     51     !defined(_XOPEN_SOURCE)
     52 extern __const char *__const sys_signame[_NSIG];
     53 extern __const char *__const sys_siglist[_NSIG];
     54 #endif
     55 
     56 __BEGIN_DECLS
     57 int	raise __P((int));
     58 #ifndef	_ANSI_SOURCE
     59 int	kill __P((pid_t, int));
     60 int	sigaction __P((int, const struct sigaction *, struct sigaction *));
     61 int	sigaddset __P((sigset_t *, int));
     62 int	sigdelset __P((sigset_t *, int));
     63 int	sigemptyset __P((sigset_t *));
     64 int	sigfillset __P((sigset_t *));
     65 int	sigismember __P((const sigset_t *, int));
     66 int	sigpending __P((sigset_t *));
     67 int	sigprocmask __P((int, const sigset_t *, sigset_t *));
     68 int	sigsuspend __P((const sigset_t *));
     69 
     70 #if defined(__GNUC__) && defined(__STDC__)
     71 extern __inline int sigaddset(sigset_t *set, int signo) {
     72 	extern int errno;
     73 
     74 	if (signo <= 0 || signo >= _NSIG) {
     75 		errno = 22;			/* EINVAL */
     76 		return -1;
     77 	}
     78 	*set |= (1 << ((signo)-1));		/* sigmask(signo) */
     79 	return (0);
     80 }
     81 
     82 extern __inline int sigdelset(sigset_t *set, int signo) {
     83 	extern int errno;
     84 
     85 	if (signo <= 0 || signo >= _NSIG) {
     86 		errno = 22;			/* EINVAL */
     87 		return -1;
     88 	}
     89 	*set &= ~(1 << ((signo)-1));		/* sigmask(signo) */
     90 	return (0);
     91 }
     92 
     93 extern __inline int sigismember(const sigset_t *set, int signo) {
     94 	extern int errno;
     95 
     96 	if (signo <= 0 || signo >= _NSIG) {
     97 		errno = 22;			/* EINVAL */
     98 		return -1;
     99 	}
    100 	return ((*set & (1 << ((signo)-1))) != 0);
    101 }
    102 #endif
    103 
    104 /* List definitions after function declarations, or Reiser cpp gets upset. */
    105 #define	sigemptyset(set)	(*(set) = 0, 0)
    106 #define	sigfillset(set)		(*(set) = ~(sigset_t)0, 0)
    107 
    108 #if (!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || \
    109     (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
    110     (_XOPEN_SOURCE - 0) >= 500
    111 int	killpg __P((pid_t, int));
    112 int	siginterrupt __P((int, int));
    113 int	sigpause __P((int));
    114 int	sigstack __P((const struct sigstack *, struct sigstack *));
    115 #ifdef __LIBC12_SOURCE__
    116 int	sigaltstack __P((const struct sigaltstack13 *, struct sigaltstack13 *));
    117 int	__sigaltstack14 __P((const stack_t *, stack_t *));
    118 #else
    119 int	sigaltstack __P((const stack_t *, stack_t *)) __RENAME(__sigaltstack14);
    120 #endif
    121 #endif /* (!_POSIX_C_SOURCE && !_XOPEN_SOURCE) || ... */
    122 
    123 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)
    124 void	psignal __P((unsigned int, const char *));
    125 int	sigblock __P((int));
    126 int	sigreturn __P((struct sigcontext *));
    127 int	sigsetmask __P((int));
    128 int	sigvec __P((int, struct sigvec *, struct sigvec *));
    129 #endif /* !_POSIX_C_SOURCE && !_XOPEN_SOURCE */
    130 
    131 #endif	/* !_ANSI_SOURCE */
    132 __END_DECLS
    133 
    134 #endif	/* !_SIGNAL_H_ */
    135