1/* 2 * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* $NetBSD: shm.h,v 1.15 1994/06/29 06:45:17 cgd Exp $ */ 29 30/* 31 * Copyright (c) 1994 Adam Glass 32 * All rights reserved. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. All advertising materials mentioning features or use of this software 43 * must display the following acknowledgement: 44 * This product includes software developed by Adam Glass. 45 * 4. The name of the author may not be used to endorse or promote products 46 * derived from this software without specific prior written permission 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 49 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 50 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 51 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 52 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 53 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 54 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 55 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 56 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 57 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 58 */ 59/* 60 * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce 61 * support for mandatory and extensible security protections. This notice 62 * is included in support of clause 2.2 (b) of the Apple Public License, 63 * Version 2.0. 64 */ 65 66/* 67 * As defined+described in "X/Open System Interfaces and Headers" 68 * Issue 4, p. XXX 69 */ 70 71#ifndef _SYS_SHM_INTERNALH_ 72#define _SYS_SHM_INTERNALH_ 73 74#include <sys/shm.h> 75#include <sys/cdefs.h> 76 77#include <machine/types.h> 78 79#if __DARWIN_ALIGN_NATURAL 80#pragma options align=natural 81#endif 82 83struct user_shmid_ds { 84 struct ipc_perm shm_perm; /* operation permission structure */ 85 user_size_t shm_segsz; /* size of segment in bytes */ 86 pid_t shm_lpid; /* PID of last shared memory op */ 87 pid_t shm_cpid; /* PID of creator */ 88 short shm_nattch; /* number of current attaches */ 89 time_t shm_atime; /* time of last shmat() */ 90 time_t shm_dtime; /* time of last shmdt() */ 91 time_t shm_ctime; /* time of last change by shmctl() */ 92 user_addr_t shm_internal; /* reserved for kernel use */ 93}; 94 95#if __DARWIN_ALIGN_NATURAL 96#pragma options align=reset 97#endif 98 99/* 100 * System 5 style catch-all structure for shared memory constants that 101 * might be of interest to user programs. Also part of the ipcs interface. 102 * Note: use of user_ssize_t intentional: permits 32 bit ipcs to provide 103 * information about 64 bit programs shared segments. 104 * Note 2: user_ssize_t is not that useful if it's not 64-bit, 105 * so let's use int64_t explicitely... 106 */ 107struct shminfo { 108 int64_t shmmax; /* max shm segment size (bytes) */ 109 int64_t shmmin; /* min shm segment size (bytes) */ 110 int64_t shmmni; /* max number of shm identifiers */ 111 int64_t shmseg; /* max shm segments per process */ 112 int64_t shmall; /* max amount of shm (pages) */ 113}; 114 115#ifdef KERNEL 116 117struct label; 118 119/* 120 * Add a kernel wrapper to the shmid_ds struct so that private info (like the 121 * MAC label) can be added to it, without changing the user interface. 122 */ 123struct shmid_kernel { 124 struct user_shmid_ds u; 125 struct label *label; /* MAC label */ 126}; 127 128extern struct shminfo shminfo; 129extern struct shmid_kernel *shmsegs; 130 131struct proc; 132 133__BEGIN_DECLS 134 135void shmexit(struct proc *); 136int shmfork(struct proc *, struct proc *); 137__private_extern__ void shmexec(struct proc *); 138 139__END_DECLS 140 141#endif /* kernel */ 142 143#endif /* !_SYS_SHM_INTERNALH_ */ 144