1/*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * (c) UNIX System Laboratories, Inc. 8 * All or some portions of this file are derived from material licensed 9 * to the University of California by American Telephone and Telegraph 10 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 11 * the permission of UNIX System Laboratories, Inc. 12 * 13 * This code is derived from software contributed to Berkeley by 14 * the Systems Programming Group of the University of Utah Computer 15 * Science Department. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions 19 * are met: 20 * 1. Redistributions of source code must retain the above copyright 21 * notice, this list of conditions and the following disclaimer. 22 * 2. Redistributions in binary form must reproduce the above copyright 23 * notice, this list of conditions and the following disclaimer in the 24 * documentation and/or other materials provided with the distribution. 25 * 3. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * @(#)ipc.h 8.4 (Berkeley) 2/19/95 42 * $FreeBSD$ 43 */ 44 45/* 46 * SVID compatible ipc.h file 47 */ 48#ifndef _SYS_IPC_H_ 49#define _SYS_IPC_H_ 50 51#include <sys/cdefs.h> 52#include <sys/_types.h> 53 54#ifndef _GID_T_DECLARED 55typedef __gid_t gid_t; 56#define _GID_T_DECLARED 57#endif 58 59#ifndef _KEY_T_DECLARED 60typedef __key_t key_t; 61#define _KEY_T_DECLARED 62#endif 63 64#ifndef _MODE_T_DECLARED 65typedef __mode_t mode_t; 66#define _MODE_T_DECLARED 67#endif 68 69#ifndef _UID_T_DECLARED 70typedef __uid_t uid_t; 71#define _UID_T_DECLARED 72#endif 73 74#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \ 75 defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD7) || \ 76 defined(COMPAT_43) 77struct ipc_perm_old { 78 unsigned short cuid; /* creator user id */ 79 unsigned short cgid; /* creator group id */ 80 unsigned short uid; /* user id */ 81 unsigned short gid; /* group id */ 82 unsigned short mode; /* r/w permission */ 83 unsigned short seq; /* sequence # (to generate unique ipcid) */ 84 key_t key; /* user specified msg/sem/shm key */ 85}; 86#endif 87 88struct ipc_perm { 89 uid_t cuid; /* creator user id */ 90 gid_t cgid; /* creator group id */ 91 uid_t uid; /* user id */ 92 gid_t gid; /* group id */ 93 mode_t mode; /* r/w permission */ 94 unsigned short seq; /* sequence # (to generate unique ipcid) */ 95 key_t key; /* user specified msg/sem/shm key */ 96}; 97 98#if __BSD_VISIBLE 99/* common mode bits */ 100#define IPC_R 000400 /* read permission */ 101#define IPC_W 000200 /* write/alter permission */ 102#define IPC_M 010000 /* permission to change control info */ 103#endif 104 105/* SVID required constants (same values as system 5) */ 106#define IPC_CREAT 001000 /* create entry if key does not exist */ 107#define IPC_EXCL 002000 /* fail if key exists */ 108#define IPC_NOWAIT 004000 /* error if request must wait */ 109 110#define IPC_PRIVATE (key_t)0 /* private key */ 111 112#define IPC_RMID 0 /* remove identifier */ 113#define IPC_SET 1 /* set options */ 114#define IPC_STAT 2 /* get options */ 115#if __BSD_VISIBLE 116/* 117 * For Linux compatibility. 118 */ 119#define IPC_INFO 3 /* get info */ 120#endif 121 122#if defined(_KERNEL) || defined(_WANT_SYSVIPC_INTERNALS) 123/* Macros to convert between ipc ids and array indices or sequence ids */ 124#define IPCID_TO_IX(id) ((id) & 0xffff) 125#define IPCID_TO_SEQ(id) (((id) >> 16) & 0xffff) 126#define IXSEQ_TO_IPCID(ix,perm) (((perm.seq) << 16) | (ix & 0xffff)) 127#endif 128 129#ifdef _KERNEL 130struct thread; 131struct proc; 132struct vmspace; 133 134#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \ 135 defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD7) 136void ipcperm_old2new(struct ipc_perm_old *, struct ipc_perm *); 137void ipcperm_new2old(struct ipc_perm *, struct ipc_perm_old *); 138#endif 139 140int ipcperm(struct thread *, struct ipc_perm *, int); 141extern void (*shmfork_hook)(struct proc *, struct proc *); 142extern void (*shmexit_hook)(struct vmspace *); 143 144#else /* ! _KERNEL */ 145 146__BEGIN_DECLS 147key_t ftok(const char *, int); 148__END_DECLS 149 150#endif /* _KERNEL */ 151 152#endif /* !_SYS_IPC_H_ */ 153