1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984 AT&T */ 28 /* All Rights Reserved */ 29 30 #ifndef _sys_shm_h 31 #define _sys_shm_h 32 33 #pragma ident "%Z%%M% %I% %E% SMI" 34 35 /* 36 * IPC Shared Memory Facility. 37 */ 38 39 #include <sys/param.h> 40 /* #include <machine/mmu.h> */ 41 42 /* 43 * Shared Memory Operation Flags. 44 */ 45 46 #define SHM_RDONLY 010000 /* attach read-only (else read-write) */ 47 #define SHM_RND 020000 /* round attach address to SHMLBA */ 48 49 /* 50 * Shmctl Command Definitions. 51 */ 52 53 #define SHM_LOCK 3 /* Lock segment in core */ 54 #define SHM_UNLOCK 4 /* Unlock segment */ 55 56 /* 57 * Implementation Constants. 58 */ 59 #define SHMLBA PAGESIZE /* segment low boundary address multiple */ 60 /* (SHMLBA must be a power of 2) */ 61 62 /* 63 * Structure Definitions. 64 */ 65 66 /* 67 * There is a shared mem id data structure for each segment in the system. 68 */ 69 70 struct shmid_ds { 71 struct ipc_perm shm_perm; /* operation permission struct */ 72 uint shm_segsz; /* size of segment in bytes */ 73 ushort shm_lpid; /* pid of last shmop */ 74 ushort shm_cpid; /* pid of creator */ 75 ushort shm_nattch; /* number of current attaches */ 76 time_t shm_atime; /* last shmat time */ 77 time_t shm_dtime; /* last shmdt time */ 78 time_t shm_ctime; /* last change time */ 79 struct anon_map *shm_amp; /* segment anon_map pointer */ 80 }; 81 82 #endif /* !_sys_shm_h */ 83