ipc.h (6912B) - Raw
1 /* 2 * Copyright (c) 2000-2002 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 /* 29 * Copyright (c) 1988 University of Utah. 30 * Copyright (c) 1990, 1993 31 * The Regents of the University of California. All rights reserved. 32 * (c) UNIX System Laboratories, Inc. 33 * All or some portions of this file are derived from material licensed 34 * to the University of California by American Telephone and Telegraph 35 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 36 * the permission of UNIX System Laboratories, Inc. 37 * 38 * This code is derived from software contributed to Berkeley by 39 * the Systems Programming Group of the University of Utah Computer 40 * Science Department. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)ipc.h 8.4 (Berkeley) 2/19/95 71 */ 72 73 /* 74 * SVID compatible ipc.h file 75 */ 76 #ifndef _SYS_IPC_H_ 77 #define _SYS_IPC_H_ 78 79 #include <sys/appleapiopts.h> 80 #include <sys/cdefs.h> 81 82 #include <sys/_types.h> 83 84 /* 85 * [XSI] The uid_t, gid_t, mode_t, and key_t types SHALL be defined as 86 * described in <sys/types.h>. 87 */ 88 #include <sys/_types/_uid_t.h> 89 #include <sys/_types/_gid_t.h> 90 #include <sys/_types/_mode_t.h> 91 #include <sys/_types/_key_t.h> 92 93 94 #pragma pack(4) 95 96 /* 97 * Technically, we should force all code references to the new structure 98 * definition, not in just the standards conformance case, and leave the 99 * legacy interface there for binary compatibility only. Currently, we 100 * are only forcing this for programs requesting standards conformance. 101 */ 102 #if __DARWIN_UNIX03 || defined(KERNEL) 103 /* 104 * [XSI] Information used in determining permission to perform an IPC 105 * operation 106 */ 107 struct ipc_perm { 108 uid_t uid; /* [XSI] Owner's user ID */ 109 gid_t gid; /* [XSI] Owner's group ID */ 110 uid_t cuid; /* [XSI] Creator's user ID */ 111 gid_t cgid; /* [XSI] Creator's group ID */ 112 mode_t mode; /* [XSI] Read/write permission */ 113 unsigned short _seq; /* Reserved for internal use */ 114 key_t _key; /* Reserved for internal use */ 115 }; 116 #define __ipc_perm_new ipc_perm 117 #else /* !__DARWIN_UNIX03 */ 118 #define ipc_perm __ipc_perm_old 119 #endif /* !__DARWIN_UNIX03 */ 120 121 #if !__DARWIN_UNIX03 122 /* 123 * Legacy structure; this structure is maintained for binary backward 124 * compatability with previous versions of the interface. New code 125 * should not use this interface, since ID values may be truncated. 126 */ 127 struct __ipc_perm_old { 128 __uint16_t cuid; /* Creator's user ID */ 129 __uint16_t cgid; /* Creator's group ID */ 130 __uint16_t uid; /* Owner's user ID */ 131 __uint16_t gid; /* Owner's group ID */ 132 mode_t mode; /* Read/Write permission */ 133 __uint16_t seq; /* Reserved for internal use */ 134 key_t key; /* Reserved for internal use */ 135 }; 136 #endif /* !__DARWIN_UNIX03 */ 137 138 #pragma pack() 139 140 /* 141 * [XSI] Definitions shall be provided for the following constants: 142 */ 143 144 /* Mode bits */ 145 #define IPC_CREAT 001000 /* Create entry if key does not exist */ 146 #define IPC_EXCL 002000 /* Fail if key exists */ 147 #define IPC_NOWAIT 004000 /* Error if request must wait */ 148 149 /* Keys */ 150 #define IPC_PRIVATE ((key_t)0) /* Private key */ 151 152 /* Control commands */ 153 #define IPC_RMID 0 /* Remove identifier */ 154 #define IPC_SET 1 /* Set options */ 155 #define IPC_STAT 2 /* Get options */ 156 157 158 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 159 160 /* common mode bits */ 161 #define IPC_R 000400 /* Read permission */ 162 #define IPC_W 000200 /* Write/alter permission */ 163 #define IPC_M 010000 /* Modify control info permission */ 164 165 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 166 167 168 169 170 __BEGIN_DECLS 171 /* [XSI] */ 172 key_t ftok(const char *, int); 173 __END_DECLS 174 175 176 #endif /* !_SYS_IPC_H_ */