2 * SPDX-License-Identifier: BSD-3-Clause
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.
13 * This code is derived from software contributed to Berkeley by
14 * the Systems Programming Group of the University of Utah Computer
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions
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.
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
41 * @(#)ipc.h 8.4 (Berkeley) 2/19/95
46 * SVID compatible ipc.h file
51 #include <sys/cdefs.h>
52 #include <sys/_types.h>
54 #ifndef _GID_T_DECLARED
55 typedef __gid_t gid_t;
56 #define _GID_T_DECLARED
59 #ifndef _KEY_T_DECLARED
60 typedef __key_t key_t;
61 #define _KEY_T_DECLARED
64 #ifndef _MODE_T_DECLARED
65 typedef __mode_t mode_t;
66 #define _MODE_T_DECLARED
69 #ifndef _UID_T_DECLARED
70 typedef __uid_t uid_t;
71 #define _UID_T_DECLARED
74 #if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \
75 defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD7) || \
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 */
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 */
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 */
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 */
110 #define IPC_PRIVATE (key_t)0 /* private key */
112 #define IPC_RMID 0 /* remove identifier */
113 #define IPC_SET 1 /* set options */
114 #define IPC_STAT 2 /* get options */
117 * For Linux compatibility.
119 #define IPC_INFO 3 /* get info */
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))
134 #if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \
135 defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD7)
136 void ipcperm_old2new(struct ipc_perm_old *, struct ipc_perm *);
137 void ipcperm_new2old(struct ipc_perm *, struct ipc_perm_old *);
140 int ipcperm(struct thread *, struct ipc_perm *, int);
141 extern void (*shmfork_hook)(struct proc *, struct proc *);
142 extern void (*shmexit_hook)(struct vmspace *);
144 #else /* ! _KERNEL */
147 key_t ftok(const char *, int);
152 #endif /* !_SYS_IPC_H_ */