xref: /src/sys/sys/sigtypes.h

/*	$NetBSD: sigtypes.h,v 1.13 2024/05/12 10:34:56 rillig Exp $	*/

/*
 * Copyright (c) 1982, 1986, 1989, 1991, 1993
 *	The Regents of the University of California.  All rights reserved.
 * (c) UNIX System Laboratories, Inc.
 * All or some portions of this file are derived from material licensed
 * to the University of California by American Telephone and Telegraph
 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
 * the permission of UNIX System Laboratories, Inc.
 *
 * 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	8.4 (Berkeley) 5/4/95
 */

#ifndef	_SYS_SIGTYPES_H_
#define	_SYS_SIGTYPES_H_

/*
 * This header file defines various signal-related types.  We also keep
 * the macros to manipulate sigset_t here, to encapsulate knowledge of
 * its internals.
 */

#include <sys/featuretest.h>
#include <machine/int_types.h>
#include <machine/ansi.h>

#ifdef	_BSD_SIZE_T_
typedef	_BSD_SIZE_T_	size_t;
#undef	_BSD_SIZE_T_
#endif

#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
    defined(_NETBSD_SOURCE)

typedef struct {
	__uint32_t	__bits[4];
} sigset_t;

/*
 * Macro for manipulating signal masks.
 */
#define __sigmask(n)		(1U << (((unsigned int)(n) - 1) & 31))
#define	__sigword(n)		(((unsigned int)(n) - 1) >> 5)
#define	__sigaddset(s, n)	((s)->__bits[__sigword(n)] |= __sigmask(n))
#define	__sigdelset(s, n)	((s)->__bits[__sigword(n)] &= ~__sigmask(n))
#define	__sigismember(s, n)	(((s)->__bits[__sigword(n)] & __sigmask(n)) != 0)
#define	__sigemptyset(s)	((s)->__bits[0] = 0x00000000, \
				 (s)->__bits[1] = 0x00000000, \
				 (s)->__bits[2] = 0x00000000, \
				 (s)->__bits[3] = 0x00000000)
#define __sigsetequal(s1,s2)	((s1)->__bits[0] == (s2)->__bits[0] && \
				 (s1)->__bits[1] == (s2)->__bits[1] && \
				 (s1)->__bits[2] == (s2)->__bits[2] && \
				 (s1)->__bits[3] == (s2)->__bits[3])
#define	__sigfillset(s)		((s)->__bits[0] = 0xffffffff, \
				 (s)->__bits[1] = 0xffffffff, \
				 (s)->__bits[2] = 0xffffffff, \
				 (s)->__bits[3] = 0xffffffff)
#define	__sigplusset(s, t) \
	do {						\
		(t)->__bits[0] |= (s)->__bits[0];	\
		(t)->__bits[1] |= (s)->__bits[1];	\
		(t)->__bits[2] |= (s)->__bits[2];	\
		(t)->__bits[3] |= (s)->__bits[3];	\
	} while (0)
#define	__sigminusset(s, t) \
	do {						\
		(t)->__bits[0] &= ~(s)->__bits[0];	\
		(t)->__bits[1] &= ~(s)->__bits[1];	\
		(t)->__bits[2] &= ~(s)->__bits[2];	\
		(t)->__bits[3] &= ~(s)->__bits[3];	\
	} while (0)
#define	__sigandset(s, t) \
	do {						\
		(t)->__bits[0] &= (s)->__bits[0];	\
		(t)->__bits[1] &= (s)->__bits[1];	\
		(t)->__bits[2] &= (s)->__bits[2];	\
		(t)->__bits[3] &= (s)->__bits[3];	\
	} while (0)

#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
    (_XOPEN_SOURCE - 0) >= 500 || (_POSIX_C_SOURCE - 0) >= 200809L || \
    defined(_NETBSD_SOURCE)
typedef struct
#if defined(_NETBSD_SOURCE)
               sigaltstack
#endif /* _NETBSD_SOURCE */
			   {
	void	*ss_sp;			/* signal stack base */
	size_t	ss_size;		/* signal stack length */
	int	ss_flags;		/* SS_DISABLE and/or SS_ONSTACK */
} stack_t;

#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500
	* || _POSIX_C_SOURCE >= 200809L || _NETBSD_SOURCE
	*/

#endif	/* _POSIX_C_SOURCE || _XOPEN_SOURCE || ... */

#endif	/* !_SYS_SIGTYPES_H_ */