/*      $NetBSD: linux32_sigevent.h,v 1.2 2021/09/19 22:30:28 thorpej Exp $     */

/*-
* Copyright (c) 2005 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Frank van der Linden.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/

#ifndef _LINUX32_SIGEVENT_H
#define _LINUX32_SIGEVENT_H

typedef union linux32_sigval {
       int             sival_int;
       netbsd32_voidp  sival_ptr;
} linux32_sigval_t;

#define LINUX32_SIGEV_MAX  64
#ifndef LINUX32_SIGEV_PAD
#define LINUX32_SIGEV_PAD ((LINUX32_SIGEV_MAX -                         \
                           (sizeof(linux32_sigval_t) + (sizeof(int) * 2))) / \
                          sizeof(int))
#endif

typedef struct linux32_sigevent {
       linux32_sigval_t sigev_value;   /* sizeof(pointer) */
       int sigev_signo;
       int sigev_notify;
       /* guaranteed to have natural pointer alignment */
       union {
               int pad[LINUX32_SIGEV_PAD];
               int tid;
               struct {
                       void (*func)(linux32_sigval_t);
                       void *attr;
               } _sigev_thread;
       } _sigev_un;
} linux32_sigevent_t;

int     linux32_to_native_sigevent(struct sigevent *,
           const struct linux32_sigevent *);
int     linux32_sigevent_copyin(const void *, void *, size_t);

#endif /* _LINUX32_SIGEVENT_H */