/*-

 *© Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

 * Copyright (c) 1988 University of Utah.

 * Copyright (c) 1990, 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.

 *

 * This code is derived from software contributed to Berkeley by

 * the Systems Programming Group of the University of Utah Computer

 * Science Department.

 *

 * 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.

 * 4. 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.

 *

 *	@(#)ipc.h	8.4 (Berkeley) 2/19/95

 * $FreeBSD: src/sys/sys/ipc.h,v 1.25 2005/01/07 02:29:23 imp Exp $

 */

/*

 * SVID compatible ipc.h file

 */

#ifndef _SYS_IPC_H_

#define _SYS_IPC_H_

#include <sys/cdefs.h>

#include <sys/types.h>

#ifndef _GID_T_DECLARED

typedef	__gid_t		gid_t;

#define	_GID_T_DECLARED

#endif

#ifndef _KEY_T_DECLARED

typedef	__key_t		key_t;

#define	_KEY_T_DECLARED

#endif

#ifndef _MODE_T_DECLARED

typedef	__mode_t	mode_t;

#define	_MODE_T_DECLARED

#endif

#ifndef _UID_T_DECLARED

typedef	__uid_t		uid_t;

#define	_UID_T_DECLARED

#endif

/*

 * XXX almost all members have wrong types.

 */

struct ipc_perm {

	unsigned short	cuid;	/* creator user id */

	unsigned short	cgid;	/* creator group id */

	unsigned short	uid;	/* user id */

	unsigned short	gid;	/* group id */

	unsigned short	mode;	/* r/w permission */

	unsigned short	seq;	/* sequence # (to generate unique ipcid) */

	key_t		key;	/* user specified msg/sem/shm key */

};

#if __BSD_VISIBLE

/* common mode bits */

#define	IPC_R		000400	/* read permission */

#define	IPC_W		000200	/* write/alter permission */

#define	IPC_M		010000	/* permission to change control info */

#endif

/* SVID required constants (same values as system 5) */

#define	IPC_CREAT	001000	/* create entry if key does not exist */

#define	IPC_EXCL	002000	/* fail if key exists */

#define	IPC_NOWAIT	004000	/* error if request must wait */

#define	IPC_PRIVATE	(key_t)0 /* private key */

#define	IPC_RMID	0	/* remove identifier */

#define	IPC_SET		1	/* set options */

#define	IPC_STAT	2	/* get options */

#if __BSD_VISIBLE

#define	IPC_INFO	3	/* get info */

#endif

#ifdef _KERNEL

/* Macros to convert between ipc ids and array indices or sequence ids */

#define	IPCID_TO_IX(id)		((id) & 0xffff)

#define	IPCID_TO_SEQ(id)	(((id) >> 16) & 0xffff)

#define	IXSEQ_TO_IPCID(ix,perm)	(((perm.seq) << 16) | (ix & 0xffff))

struct thread;

struct proc;

struct vmspace;

extern void (*shmfork_hook)(struct proc *, struct proc *);

extern void (*shmexit_hook)(struct vmspace *);

#else /* ! _KERNEL */

__BEGIN_DECLS

/*

* Convert a pathname and project identifier to an IPC key.

*/

IMPORT_C key_t ftok(const char *pathname, int proj_id);

__END_DECLS

#endif /* _KERNEL */

#endif /* !_SYS_IPC_H_ */

//  End of File