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      1 /*	$NetBSD: linux32_sigevent.h,v 1.2 2021/09/19 22:30:28 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2005 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Frank van der Linden.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _LINUX32_SIGEVENT_H
     33 #define _LINUX32_SIGEVENT_H
     34 
     35 typedef union linux32_sigval {
     36 	int		sival_int;
     37 	netbsd32_voidp	sival_ptr;
     38 } linux32_sigval_t;
     39 
     40 #define LINUX32_SIGEV_MAX  64
     41 #ifndef LINUX32_SIGEV_PAD
     42 #define LINUX32_SIGEV_PAD ((LINUX32_SIGEV_MAX -				\
     43 			    (sizeof(linux32_sigval_t) + (sizeof(int) * 2))) / \
     44 			   sizeof(int))
     45 #endif
     46 
     47 typedef struct linux32_sigevent {
     48 	linux32_sigval_t sigev_value;	/* sizeof(pointer) */
     49 	int sigev_signo;
     50 	int sigev_notify;
     51 	/* guaranteed to have natural pointer alignment */
     52 	union {
     53 		int pad[LINUX32_SIGEV_PAD];
     54 		int tid;
     55 		struct {
     56 			void (*func)(linux32_sigval_t);
     57 			void *attr;
     58 		} _sigev_thread;
     59 	} _sigev_un;
     60 } linux32_sigevent_t;
     61 
     62 int	linux32_to_native_sigevent(struct sigevent *,
     63 	    const struct linux32_sigevent *);
     64 int	linux32_sigevent_copyin(const void *, void *, size_t);
     65 
     66 #endif /* _LINUX32_SIGEVENT_H */
     67