glibc (2.38)
1 /* Copyright (C) 1995-2023 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #ifndef _SYS_IPC_H
19 # error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
20 #endif
21
22 #include <bits/types.h>
23
24 /* Mode bits for `msgget', `semget', and `shmget'. */
25 #define IPC_CREAT 01000 /* Create key if key does not exist. */
26 #define IPC_EXCL 02000 /* Fail if key exists. */
27 #define IPC_NOWAIT 04000 /* Return error on wait. */
28
29 /* Control commands for `msgctl', `semctl', and `shmctl'. */
30 #define IPC_RMID 0 /* Remove identifier. */
31 #define IPC_SET 1 /* Set `ipc_perm' options. */
32 #define IPC_STAT 2 /* Get `ipc_perm' options. */
33 #ifdef __USE_GNU
34 # define IPC_INFO 3 /* See ipcs. */
35 #endif
36
37 /* Special key values. */
38 #define IPC_PRIVATE ((__key_t) 0) /* Private key. */
39
40 #include <bits/ipc-perm.h>
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