1/*- 2 * Copyright (c) 1988 University of Utah. 3 * Copyright (c) 1990, 1993 4 * The Regents of the University of California. All rights reserved. 5 * (c) UNIX System Laboratories, Inc. 6 * All or some portions of this file are derived from material licensed 7 * to the University of California by American Telephone and Telegraph 8 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 9 * the permission of UNIX System Laboratories, Inc. 10 * 11 * This code is derived from software contributed to Berkeley by 12 * the Systems Programming Group of the University of Utah Computer 13 * Science Department. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)ipc.h 8.4 (Berkeley) 2/19/95 40 * $FreeBSD$ 41 */ 42 43/* 44 * SVID compatible ipc.h file 45 */ 46#ifndef _SYS_IPC_H_ 47#define _SYS_IPC_H_ 48 49#include <sys/cdefs.h> 50#include <sys/_types.h> 51 52#ifndef _GID_T_DECLARED 53typedef __gid_t gid_t; 54#define _GID_T_DECLARED 55#endif 56 57#ifndef _KEY_T_DECLARED 58typedef __key_t key_t; 59#define _KEY_T_DECLARED 60#endif 61 62#ifndef _MODE_T_DECLARED 63typedef __mode_t mode_t; 64#define _MODE_T_DECLARED 65#endif 66 67#ifndef _UID_T_DECLARED 68typedef __uid_t uid_t; 69#define _UID_T_DECLARED 70#endif 71 72#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \ 73 defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD7) || \ 74 defined(COMPAT_43) 75struct ipc_perm_old { 76 unsigned short cuid; /* creator user id */ 77 unsigned short cgid; /* creator group id */ 78 unsigned short uid; /* user id */ 79 unsigned short gid; /* group id */ 80 unsigned short mode; /* r/w permission */ 81 unsigned short seq; /* sequence # (to generate unique ipcid) */ 82 key_t key; /* user specified msg/sem/shm key */ 83}; 84#endif 85 86struct ipc_perm { 87 uid_t cuid; /* creator user id */ 88 gid_t cgid; /* creator group id */ 89 uid_t uid; /* user id */ 90 gid_t gid; /* group id */ 91 mode_t mode; /* r/w permission */ 92 unsigned short seq; /* sequence # (to generate unique ipcid) */ 93 key_t key; /* user specified msg/sem/shm key */ 94}; 95 96#if __BSD_VISIBLE 97/* common mode bits */ 98#define IPC_R 000400 /* read permission */ 99#define IPC_W 000200 /* write/alter permission */ 100#define IPC_M 010000 /* permission to change control info */ 101#endif 102 103/* SVID required constants (same values as system 5) */ 104#define IPC_CREAT 001000 /* create entry if key does not exist */ 105#define IPC_EXCL 002000 /* fail if key exists */ 106#define IPC_NOWAIT 004000 /* error if request must wait */ 107 108#define IPC_PRIVATE (key_t)0 /* private key */ 109 110#define IPC_RMID 0 /* remove identifier */ 111#define IPC_SET 1 /* set options */ 112#define IPC_STAT 2 /* get options */ 113#if __BSD_VISIBLE 114/* 115 * For Linux compatability. 116 */ 117#define IPC_INFO 3 /* get info */ 118#endif 119 120#ifdef _KERNEL 121/* Macros to convert between ipc ids and array indices or sequence ids */ 122#define IPCID_TO_IX(id) ((id) & 0xffff) 123#define IPCID_TO_SEQ(id) (((id) >> 16) & 0xffff) 124#define IXSEQ_TO_IPCID(ix,perm) (((perm.seq) << 16) | (ix & 0xffff)) 125 126struct thread; 127struct proc; 128struct vmspace; 129 130#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \ 131 defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD7) 132void ipcperm_old2new(struct ipc_perm_old *, struct ipc_perm *); 133void ipcperm_new2old(struct ipc_perm *, struct ipc_perm_old *); 134#endif 135 136int ipcperm(struct thread *, struct ipc_perm *, int); 137extern void (*shmfork_hook)(struct proc *, struct proc *); 138extern void (*shmexit_hook)(struct vmspace *); 139 140#else /* ! _KERNEL */ 141 142__BEGIN_DECLS 143key_t ftok(const char *, int); 144__END_DECLS 145 146#endif /* _KERNEL */ 147 148#endif /* !_SYS_IPC_H_ */ 149