/*	$NetBSD: linux_sem.h,v 1.10 2008/04/28 20:23:44 martin Exp $	*/

/*-
 * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Frank van der Linden and Eric Haszlakiewicz.
 *
 * 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 _LINUX_SEM_H
#define _LINUX_SEM_H

#include <sys/sem.h>

/*
 * Operations for semctl(2), in addition to IPC_STAT and IPC_SET
 */
#define LINUX_GETPID  11
#define LINUX_GETVAL  12
#define LINUX_GETALL  13
#define LINUX_GETNCNT 14
#define LINUX_GETZCNT 15
#define LINUX_SETVAL  16
#define LINUX_SETALL  17

/*
 * Linux semid_ds structure. Internally used pointer fields are not
 * important to us and have been changed to void *
 */

struct linux_semid_ds {
	struct linux_ipc_perm	 l_sem_perm;
	linux_time_t		 l_sem_otime;
	linux_time_t		 l_sem_ctime;
	void 			*l_sem_base;
	void			*l_eventn;
	void			*l_eventz;
	void			*l_undo;
	ushort			 l_sem_nsems;
};

struct linux_semid64_ds {
	struct linux_ipc64_perm	 l_sem_perm;
	linux_time_t		 l_sem_otime;
	unsigned long		 l___unused1;
	linux_time_t		 l_sem_ctime;
	unsigned long		 l___unused2;
	unsigned long		 l_sem_nsems;
	unsigned long		 l___unused3;
	unsigned long		 l___unused4;
};

union linux_semun {
	int			 l_val;
	struct linux_semid_ds	*l_buf;
	ushort			*l_array;
	void			*l___buf;	/* For unsupported IPC_INFO */
	void			*l___pad;
};

/* Pretend the sys_semctl syscall is defined */
#ifndef __amd64__
struct linux_sys_semctl_args {
	syscallarg(int) semid;
	syscallarg(int) semnum;
	syscallarg(int) cmd;
	syscallarg(union linux_semun) arg;
};
int linux_sys_semctl(struct lwp *, const struct linux_sys_semctl_args *, register_t *);
#endif


#ifdef SYSVSEM
#ifdef _KERNEL
__BEGIN_DECLS
void bsd_to_linux_semid_ds(struct semid_ds *, struct linux_semid_ds *);
void bsd_to_linux_semid64_ds(struct semid_ds *, struct linux_semid64_ds *);
void linux_to_bsd_semid_ds(struct linux_semid_ds *, struct semid_ds *);
void linux_to_bsd_semid64_ds(struct linux_semid64_ds *, struct semid_ds *);
__END_DECLS
#endif	/* !_KERNEL */
#endif	/* !SYSVSEM */

#endif /* !_LINUX_SEM_H */