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Remove the advertising clause in the UCB license which Berkeley
rescinded 22 July 1999.  Proofed by myself and Theo.

/*	$OpenBSD: signal.h,v 1.7 2003/06/02 19:34:12 millert Exp $	*/
/*	$NetBSD: signal.h,v 1.8 1996/02/29 00:04:57 jtc Exp $	*/

/*-
 * Copyright (c) 1991, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)signal.h	8.3 (Berkeley) 3/30/94
 */

#ifndef _USER_SIGNAL_H
#define _USER_SIGNAL_H

#include <sys/signal.h>

#if !defined(_ANSI_SOURCE)
#include <sys/types.h>
#endif

#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
extern __const char *__const sys_signame[_NSIG];
extern __const char *__const sys_siglist[_NSIG];
#endif

__BEGIN_DECLS
int	raise(int);
#ifndef	_ANSI_SOURCE
int	kill(pid_t, int);
int	sigaction(int, const struct sigaction *, struct sigaction *);
int	sigaddset(sigset_t *, int);
int	sigdelset(sigset_t *, int);
int	sigemptyset(sigset_t *);
int	sigfillset(sigset_t *);
int	sigismember(const sigset_t *, int);
int	sigpending(sigset_t *);
int	sigprocmask(int, const sigset_t *, sigset_t *);
int	sigsuspend(const sigset_t *);

#if defined(__GNUC__)
extern __inline int sigaddset(sigset_t *set, int signo) {
	extern int errno;

	if (signo <= 0 || signo >= _NSIG) {
		errno = 22;			/* EINVAL */
		return -1;
	}
	*set |= (1 << ((signo)-1));		/* sigmask(signo) */
	return (0);
}

extern __inline int sigdelset(sigset_t *set, int signo) {
	extern int errno;

	if (signo <= 0 || signo >= _NSIG) {
		errno = 22;			/* EINVAL */
		return -1;
	}
	*set &= ~(1 << ((signo)-1));		/* sigmask(signo) */
	return (0);
}

extern __inline int sigismember(const sigset_t *set, int signo) {
	extern int errno;

	if (signo <= 0 || signo >= _NSIG) {
		errno = 22;			/* EINVAL */
		return -1;
	}
	return ((*set & (1 << ((signo)-1))) != 0);
}
#endif

/* List definitions after function declarations, or Reiser cpp gets upset. */
#define	sigemptyset(set)	(*(set) = 0, 0)
#define	sigfillset(set)		(*(set) = ~(sigset_t)0, 0)

#ifndef _POSIX_SOURCE
int	killpg(pid_t, int);
int	sigblock(int);
int	siginterrupt(int, int);
int	sigpause(int);
int	sigreturn(struct sigcontext *);
int	sigsetmask(int);
int	sigstack(const struct sigstack *, struct sigstack *);
int	sigaltstack(const struct sigaltstack *, struct sigaltstack *);
int	sigvec(int, struct sigvec *, struct sigvec *);
void	psignal(unsigned int, const char *);
int	sigwait(const sigset_t *, int *);
#endif	/* !_POSIX_SOURCE */
#endif	/* !_ANSI_SOURCE */
__END_DECLS

#endif	/* !_USER_SIGNAL_H */