xref: /titanic_50/usr/src/lib/libbc/inc/include/sys/shm.h (revision 5d54f3d8999eac1762fe0a8c7177d20f1f201fae)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
57c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
67c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
77c478bd9Sstevel@tonic-gate  * with the License.
87c478bd9Sstevel@tonic-gate  *
97c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
107c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
117c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
127c478bd9Sstevel@tonic-gate  * and limitations under the License.
137c478bd9Sstevel@tonic-gate  *
147c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
157c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
167c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
177c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
187c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
197c478bd9Sstevel@tonic-gate  *
207c478bd9Sstevel@tonic-gate  * CDDL HEADER END
217c478bd9Sstevel@tonic-gate  */
227c478bd9Sstevel@tonic-gate /*
237c478bd9Sstevel@tonic-gate  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
247c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate  */
267c478bd9Sstevel@tonic-gate 
277c478bd9Sstevel@tonic-gate /*      Copyright (c) 1984 AT&T */
287c478bd9Sstevel@tonic-gate /*        All Rights Reserved   */
297c478bd9Sstevel@tonic-gate 
30*5d54f3d8Smuffin #ifndef _sys_shm_h
31*5d54f3d8Smuffin #define	_sys_shm_h
32*5d54f3d8Smuffin 
337c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
347c478bd9Sstevel@tonic-gate 
357c478bd9Sstevel@tonic-gate /*
367c478bd9Sstevel@tonic-gate  *	IPC Shared Memory Facility.
377c478bd9Sstevel@tonic-gate  */
387c478bd9Sstevel@tonic-gate 
397c478bd9Sstevel@tonic-gate #include <sys/param.h>
407c478bd9Sstevel@tonic-gate /* #include <machine/mmu.h> */
417c478bd9Sstevel@tonic-gate 
427c478bd9Sstevel@tonic-gate /*
437c478bd9Sstevel@tonic-gate  *	Shared Memory Operation Flags.
447c478bd9Sstevel@tonic-gate  */
457c478bd9Sstevel@tonic-gate 
467c478bd9Sstevel@tonic-gate #define	SHM_RDONLY	010000	/* attach read-only (else read-write) */
477c478bd9Sstevel@tonic-gate #define	SHM_RND		020000	/* round attach address to SHMLBA */
487c478bd9Sstevel@tonic-gate 
497c478bd9Sstevel@tonic-gate /*
507c478bd9Sstevel@tonic-gate  * Shmctl Command Definitions.
517c478bd9Sstevel@tonic-gate  */
527c478bd9Sstevel@tonic-gate 
537c478bd9Sstevel@tonic-gate #define SHM_LOCK	3	/* Lock segment in core */
547c478bd9Sstevel@tonic-gate #define SHM_UNLOCK	4	/* Unlock segment */
557c478bd9Sstevel@tonic-gate 
567c478bd9Sstevel@tonic-gate /*
577c478bd9Sstevel@tonic-gate  *	Implementation Constants.
587c478bd9Sstevel@tonic-gate  */
597c478bd9Sstevel@tonic-gate #define	SHMLBA	PAGESIZE	/* segment low boundary address multiple */
607c478bd9Sstevel@tonic-gate 				/* (SHMLBA must be a power of 2) */
617c478bd9Sstevel@tonic-gate 
627c478bd9Sstevel@tonic-gate /*
637c478bd9Sstevel@tonic-gate  *	Structure Definitions.
647c478bd9Sstevel@tonic-gate  */
657c478bd9Sstevel@tonic-gate 
667c478bd9Sstevel@tonic-gate /*
677c478bd9Sstevel@tonic-gate  *	There is a shared mem id data structure for each segment in the system.
687c478bd9Sstevel@tonic-gate  */
697c478bd9Sstevel@tonic-gate 
707c478bd9Sstevel@tonic-gate struct shmid_ds {
717c478bd9Sstevel@tonic-gate 	struct ipc_perm	shm_perm;	/* operation permission struct */
727c478bd9Sstevel@tonic-gate 	uint		shm_segsz;	/* size of segment in bytes */
737c478bd9Sstevel@tonic-gate 	ushort		shm_lpid;	/* pid of last shmop */
747c478bd9Sstevel@tonic-gate 	ushort		shm_cpid;	/* pid of creator */
757c478bd9Sstevel@tonic-gate 	ushort		shm_nattch;	/* number of current attaches */
767c478bd9Sstevel@tonic-gate 	time_t		shm_atime;	/* last shmat time */
777c478bd9Sstevel@tonic-gate 	time_t		shm_dtime;	/* last shmdt time */
787c478bd9Sstevel@tonic-gate 	time_t		shm_ctime;	/* last change time */
797c478bd9Sstevel@tonic-gate 	struct anon_map	*shm_amp;	/* segment anon_map pointer */
807c478bd9Sstevel@tonic-gate };
817c478bd9Sstevel@tonic-gate 
827c478bd9Sstevel@tonic-gate #endif /* !_sys_shm_h */
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