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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 */
43
44/*
45 * SVID compatible ipc.h file
46 */
47#ifndef _SYS_IPC_H_
48#define _SYS_IPC_H_
49
50#include <sys/cdefs.h>
51#include <sys/_types.h>
52
53#ifndef _GID_T_DECLARED
54typedef __gid_t gid_t;
55#define _GID_T_DECLARED
56#endif
57
58#ifndef _KEY_T_DECLARED
59typedef __key_t key_t;
60#define _KEY_T_DECLARED
61#endif
62
63#ifndef _MODE_T_DECLARED
64typedef __mode_t mode_t;
65#define _MODE_T_DECLARED
66#endif
67
68#ifndef _UID_T_DECLARED
69typedef __uid_t uid_t;
70#define _UID_T_DECLARED
71#endif
72
73#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \
74 defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD7) || \
75 defined(COMPAT_43)
76struct ipc_perm_old {
77 unsigned short cuid; /* creator user id */
78 unsigned short cgid; /* creator group id */
79 unsigned short uid; /* user id */
80 unsigned short gid; /* group id */
81 unsigned short mode; /* r/w permission */
82 unsigned short seq; /* sequence # (to generate unique ipcid) */
83 key_t key; /* user specified msg/sem/shm key */
84};
85#endif
86
87struct ipc_perm {
88 uid_t cuid; /* creator user id */
89 gid_t cgid; /* creator group id */
90 uid_t uid; /* user id */
91 gid_t gid; /* group id */
92 mode_t mode; /* r/w permission */
93 unsigned short seq; /* sequence # (to generate unique ipcid) */
94 key_t key; /* user specified msg/sem/shm key */
95};
96
97#if __BSD_VISIBLE
98/* common mode bits */
99#define IPC_R 000400 /* read permission */
100#define IPC_W 000200 /* write/alter permission */
101#define IPC_M 010000 /* permission to change control info */
102#endif
103
104/* SVID required constants (same values as system 5) */
105#define IPC_CREAT 001000 /* create entry if key does not exist */
106#define IPC_EXCL 002000 /* fail if key exists */
107#define IPC_NOWAIT 004000 /* error if request must wait */
108
109#define IPC_PRIVATE (key_t)0 /* private key */
110
111#define IPC_RMID 0 /* remove identifier */
112#define IPC_SET 1 /* set options */
113#define IPC_STAT 2 /* get options */
114#if __BSD_VISIBLE
115/*
116 * For Linux compatibility.
117 */
118#define IPC_INFO 3 /* get info */
119#endif
120
121#if defined(_KERNEL) || defined(_WANT_SYSVIPC_INTERNALS)
122/* Macros to convert between ipc ids and array indices or sequence ids */
123#define IPCID_TO_IX(id) ((id) & 0xffff)
124#define IPCID_TO_SEQ(id) (((id) >> 16) & 0xffff)
125#define IXSEQ_TO_IPCID(ix,perm) (((perm.seq) << 16) | (ix & 0xffff))
126#endif
127
128#ifdef _KERNEL
129struct thread;
130struct proc;
131struct vmspace;
132struct vm_object;
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 *);
143extern void (*shmobjinfo_hook)(struct vm_object *obj, key_t *key,
144 unsigned short *seq);
145
146#else /* ! _KERNEL */
147
148__BEGIN_DECLS
149key_t ftok(const char *, int);
150__END_DECLS
151
152#endif /* _KERNEL */
153
154#endif /* !_SYS_IPC_H_ */