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 #pragma pack(4) 80 81 struct user_shmid_ds { 82 struct ipc_perm shm_perm; /* operation permission structure */ 83 user_size_t shm_segsz; /* size of segment in bytes */ 84 pid_t shm_lpid; /* PID of last shared memory op */ 85 pid_t shm_cpid; /* PID of creator */ 86 short shm_nattch; /* number of current attaches */ 87 user_time_t shm_atime; /* time of last shmat() */ 88 user_time_t shm_dtime; /* time of last shmdt() */ 89 user_time_t shm_ctime; /* time of last change by shmctl() */ 90 user_addr_t shm_internal; /* reserved for kernel use */ 91 }; 92 93 struct user32_shmid_ds { 94 struct ipc_perm shm_perm; /* operation permission structure */ 95 uint32_t shm_segsz; /* size of segment in bytes */ 96 pid_t shm_lpid; /* PID of last shared memory op */ 97 pid_t shm_cpid; /* PID of creator */ 98 short shm_nattch; /* number of current attaches */ 99 uint32_t shm_atime; /* time of last shmat() */ 100 uint32_t shm_dtime; /* time of last shmdt() */ 101 uint32_t shm_ctime; /* time of last change by shmctl() */ 102 user32_addr_t shm_internal; /* reserved for kernel use */ 103 }; 104 105 #pragma pack() 106 107 /* 108 * System 5 style catch-all structure for shared memory constants that 109 * might be of interest to user programs. Also part of the ipcs interface. 110 * Note: use of user_ssize_t intentional: permits 32 bit ipcs to provide 111 * information about 64 bit programs shared segments. 112 * Note 2: user_ssize_t is not that useful if it's not 64-bit, 113 * so let's use int64_t explicitely... 114 */ 115 struct shminfo { 116 int64_t shmmax; /* max shm segment size (bytes) */ 117 int64_t shmmin; /* min shm segment size (bytes) */ 118 int64_t shmmni; /* max number of shm identifiers */ 119 int64_t shmseg; /* max shm segments per process */ 120 int64_t shmall; /* max amount of shm (pages) */ 121 }; 122 123 #ifdef KERNEL 124 125 struct label; 126 127 /* 128 * Add a kernel wrapper to the shmid_ds struct so that private info (like the 129 * MAC label) can be added to it, without changing the user interface. 130 */ 131 struct shmid_kernel { 132 struct user_shmid_ds u; 133 struct label *label; /* MAC label */ 134 }; 135 136 extern struct shminfo shminfo; 137 extern struct shmid_kernel *shmsegs; 138 139 struct proc; 140 141 __BEGIN_DECLS 142 143 void shmexit(struct proc *); 144 int shmfork(struct proc *, struct proc *); 145 __private_extern__ void shmexec(struct proc *); 146 147 __END_DECLS 148 149 #endif /* kernel */ 150 151 #endif /* !_SYS_SHM_INTERNALH_ */ 152