1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/* Copyright (C) 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _SYS_IPC_BUF_H
#define _SYS_IPC_BUF_H
#include <features.h>
#include <sys/types.h>
/* Mode bits for `msgget', `semget', and `shmget'. */
#define IPC_CREAT 01000 /* create key if key does not exist */
#define IPC_EXCL 02000 /* fail if key exists */
#define IPC_NOWAIT 04000 /* return error on wait */
/* Control commands for `msgctl', `semctl', and `shmctl'. */
#define IPC_RMID 0 /* remove identifier */
#define IPC_SET 1 /* set `ipc_perm' options */
#define IPC_STAT 2 /* get `ipc_perm' options */
#define IPC_INFO 3 /* see ipcs */
__BEGIN_DECLS
/* Special key values. */
#define IPC_PRIVATE ((key_t) 0) /* private key */
/* Data structure used to pass permission information to IPC operations. */
struct ipc_perm
{
key_t __key; /* key */
__uid_t uid; /* owner's user ID */
__gid_t gid; /* owner's group ID */
__uid_t cuid; /* creator's user ID */
__gid_t cgid; /* creator's group ID */
__mode_t mode; /* read/write permission */
unsigned short int __seq; /* sequence number */
};
/* Kludge to work around Linux' restriction of only up to five
arguments to a system call. */
struct ipc_kludge
{
void *msgp;
long msgtyp;
};
/* The actual system call: all functions are multiplexed by this. */
extern int __ipc __P ((int __call, int __first, int __second, int __third,
void *__ptr));
/* The codes for the functions to use the multiplexer `__ipc'. */
#define IPCOP_semop 1
#define IPCOP_semget 2
#define IPCOP_semctl 3
#define IPCOP_msgsnd 11
#define IPCOP_msgrcv 12
#define IPCOP_msgget 13
#define IPCOP_msgctl 14
#define IPCOP_shmat 21
#define IPCOP_shmdt 22
#define IPCOP_shmget 23
#define IPCOP_shmctl 24
__END_DECLS
#endif /* sys/ipc_buf.h */
|
