1 /* $NetBSD: ipc.h,v 1.31 2009/01/19 19:39:41 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * (c) UNIX System Laboratories, Inc. 7 * All or some portions of this file are derived from material licensed 8 * to the University of California by American Telephone and Telegraph 9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 10 * the permission of UNIX System Laboratories, Inc. 11 * 12 * This code is derived from software contributed to Berkeley by 13 * the Systems Programming Group of the University of Utah Computer 14 * Science Department. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)ipc.h 8.4 (Berkeley) 2/19/95 41 */ 42 43 /* 44 * Copyright (c) 1988 University of Utah. 45 * 46 * This code is derived from software contributed to Berkeley by 47 * the Systems Programming Group of the University of Utah Computer 48 * Science Department. 49 * 50 * Redistribution and use in source and binary forms, with or without 51 * modification, are permitted provided that the following conditions 52 * are met: 53 * 1. Redistributions of source code must retain the above copyright 54 * notice, this list of conditions and the following disclaimer. 55 * 2. Redistributions in binary form must reproduce the above copyright 56 * notice, this list of conditions and the following disclaimer in the 57 * documentation and/or other materials provided with the distribution. 58 * 3. All advertising materials mentioning features or use of this software 59 * must display the following acknowledgement: 60 * This product includes software developed by the University of 61 * California, Berkeley and its contributors. 62 * 4. Neither the name of the University nor the names of its contributors 63 * may be used to endorse or promote products derived from this software 64 * without specific prior written permission. 65 * 66 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 67 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 68 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 69 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 70 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 71 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 72 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 73 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 74 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 75 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 76 * SUCH DAMAGE. 77 * 78 * @(#)ipc.h 8.4 (Berkeley) 2/19/95 79 */ 80 81 /* 82 * SVID compatible ipc.h file 83 */ 84 85 #ifndef _SYS_IPC_H_ 86 #define _SYS_IPC_H_ 87 88 #include <sys/featuretest.h> 89 #include <sys/types.h> 90 91 struct ipc_perm { 92 uid_t uid; /* user id */ 93 gid_t gid; /* group id */ 94 uid_t cuid; /* creator user id */ 95 gid_t cgid; /* creator group id */ 96 mode_t mode; /* r/w permission */ 97 98 /* 99 * These members are private and used only in the internal 100 * implementation of this interface. 101 */ 102 unsigned short _seq; /* sequence # (to generate unique 103 msg/sem/shm id) */ 104 key_t _key; /* user specified msg/sem/shm key */ 105 }; 106 107 #if defined(_NETBSD_SOURCE) 108 /* Warning: 64-bit structure padding is needed here */ 109 struct ipc_perm_sysctl { 110 uint64_t _key; 111 uid_t uid; 112 gid_t gid; 113 uid_t cuid; 114 gid_t cgid; 115 mode_t mode; 116 int16_t _seq; 117 int16_t pad; 118 }; 119 #endif /* _NETBSD_SOURCE */ 120 121 /* Common access type bits, used with ipcperm(). */ 122 #define IPC_R 000400 /* read permission */ 123 #define IPC_W 000200 /* write/alter permission */ 124 #define IPC_M 010000 /* permission to change control info */ 125 126 /* X/Open required constants (same values as system 5) */ 127 #define IPC_CREAT 001000 /* create entry if key does not exist */ 128 #define IPC_EXCL 002000 /* fail if key exists */ 129 #define IPC_NOWAIT 004000 /* error if request must wait */ 130 131 #define IPC_PRIVATE (key_t)0 /* private key */ 132 133 #define IPC_RMID 0 /* remove identifier */ 134 #define IPC_SET 1 /* set options */ 135 #define IPC_STAT 2 /* get options */ 136 137 /* 138 * Macros to convert between ipc ids and array indices or sequence ids. 139 * The first of these is used by ipcs(1), and so is defined outside the 140 * kernel as well. 141 */ 142 #if defined(_NETBSD_SOURCE) 143 #define IXSEQ_TO_IPCID(ix,perm) (((perm._seq) << 16) | (ix & 0xffff)) 144 #endif 145 146 #ifdef _KERNEL 147 #define IPCID_TO_IX(id) ((id) & 0xffff) 148 #define IPCID_TO_SEQ(id) (((id) >> 16) & 0xffff) 149 150 struct kauth_cred; 151 int ipcperm(struct kauth_cred *, struct ipc_perm *, int); 152 153 /* 154 * sysctl helper routine for kern.ipc.sysvipc_info subtree. 155 */ 156 157 #define SYSCTL_FILL_PERM(src, dst) do { \ 158 (dst)._key = (src)._key; \ 159 (dst).uid = (src).uid; \ 160 (dst).gid = (src).gid; \ 161 (dst).cuid = (src).cuid; \ 162 (dst).cgid = (src).cgid; \ 163 (dst).mode = (src).mode; \ 164 (dst)._seq = (src)._seq; \ 165 } while (/*CONSTCOND*/ 0); 166 167 #endif /* _KERNEL */ 168 169 #ifndef _KERNEL 170 #include <sys/cdefs.h> 171 172 __BEGIN_DECLS 173 key_t ftok(const char *, int); 174 __END_DECLS 175 #endif 176 #endif /* !_SYS_IPC_H_ */ 177