Home | History | Annotate | Line # | Download | only in sys 
      1 /*	$NetBSD: sigtypes.h,v 1.13 2024/05/12 10:34:56 rillig Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1982, 1986, 1989, 1991, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  * (c) UNIX System Laboratories, Inc.
      7  * All or some portions of this file are derived from material licensed
      8  * to the University of California by American Telephone and Telegraph
      9  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
     10  * the permission of UNIX System Laboratories, Inc.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  *
     36  *	@(#)signal.h	8.4 (Berkeley) 5/4/95
     37  */
     38 
     39 #ifndef	_SYS_SIGTYPES_H_
     40 #define	_SYS_SIGTYPES_H_
     41 
     42 /*
     43  * This header file defines various signal-related types.  We also keep
     44  * the macros to manipulate sigset_t here, to encapsulate knowledge of
     45  * its internals.
     46  */
     47 
     48 #include <sys/featuretest.h>
     49 #include <machine/int_types.h>
     50 #include <machine/ansi.h>
     51 
     52 #ifdef	_BSD_SIZE_T_
     53 typedef	_BSD_SIZE_T_	size_t;
     54 #undef	_BSD_SIZE_T_
     55 #endif
     56 
     57 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
     58     defined(_NETBSD_SOURCE)
     59 
     60 typedef struct {
     61 	__uint32_t	__bits[4];
     62 } sigset_t;
     63 
     64 /*
     65  * Macro for manipulating signal masks.
     66  */
     67 #define __sigmask(n)		(1U << (((unsigned int)(n) - 1) & 31))
     68 #define	__sigword(n)		(((unsigned int)(n) - 1) >> 5)
     69 #define	__sigaddset(s, n)	((s)->__bits[__sigword(n)] |= __sigmask(n))
     70 #define	__sigdelset(s, n)	((s)->__bits[__sigword(n)] &= ~__sigmask(n))
     71 #define	__sigismember(s, n)	(((s)->__bits[__sigword(n)] & __sigmask(n)) != 0)
     72 #define	__sigemptyset(s)	((s)->__bits[0] = 0x00000000, \
     73 				 (s)->__bits[1] = 0x00000000, \
     74 				 (s)->__bits[2] = 0x00000000, \
     75 				 (s)->__bits[3] = 0x00000000)
     76 #define __sigsetequal(s1,s2)	((s1)->__bits[0] == (s2)->__bits[0] && \
     77 				 (s1)->__bits[1] == (s2)->__bits[1] && \
     78 				 (s1)->__bits[2] == (s2)->__bits[2] && \
     79 				 (s1)->__bits[3] == (s2)->__bits[3])
     80 #define	__sigfillset(s)		((s)->__bits[0] = 0xffffffff, \
     81 				 (s)->__bits[1] = 0xffffffff, \
     82 				 (s)->__bits[2] = 0xffffffff, \
     83 				 (s)->__bits[3] = 0xffffffff)
     84 #define	__sigplusset(s, t) \
     85 	do {						\
     86 		(t)->__bits[0] |= (s)->__bits[0];	\
     87 		(t)->__bits[1] |= (s)->__bits[1];	\
     88 		(t)->__bits[2] |= (s)->__bits[2];	\
     89 		(t)->__bits[3] |= (s)->__bits[3];	\
     90 	} while (0)
     91 #define	__sigminusset(s, t) \
     92 	do {						\
     93 		(t)->__bits[0] &= ~(s)->__bits[0];	\
     94 		(t)->__bits[1] &= ~(s)->__bits[1];	\
     95 		(t)->__bits[2] &= ~(s)->__bits[2];	\
     96 		(t)->__bits[3] &= ~(s)->__bits[3];	\
     97 	} while (0)
     98 #define	__sigandset(s, t) \
     99 	do {						\
    100 		(t)->__bits[0] &= (s)->__bits[0];	\
    101 		(t)->__bits[1] &= (s)->__bits[1];	\
    102 		(t)->__bits[2] &= (s)->__bits[2];	\
    103 		(t)->__bits[3] &= (s)->__bits[3];	\
    104 	} while (0)
    105 
    106 #if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
    107     (_XOPEN_SOURCE - 0) >= 500 || (_POSIX_C_SOURCE - 0) >= 200809L || \
    108     defined(_NETBSD_SOURCE)
    109 typedef struct
    110 #if defined(_NETBSD_SOURCE)
    111                sigaltstack
    112 #endif /* _NETBSD_SOURCE */
    113 			   {
    114 	void	*ss_sp;			/* signal stack base */
    115 	size_t	ss_size;		/* signal stack length */
    116 	int	ss_flags;		/* SS_DISABLE and/or SS_ONSTACK */
    117 } stack_t;
    118 
    119 #endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500
    120 	* || _POSIX_C_SOURCE >= 200809L || _NETBSD_SOURCE
    121 	*/
    122 
    123 #endif	/* _POSIX_C_SOURCE || _XOPEN_SOURCE || ... */
    124 
    125 #endif	/* !_SYS_SIGTYPES_H_ */
    126