git://sourceware.org / glibc.git / blame
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1 | /* Copyright (C) 1995, 1996 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. | |
| 3 | Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995. | |
| 60478656 | 4 | |
| 8a4b65b4 UD |
5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Library General Public License as | |
| 7 | published by the Free Software Foundation; either version 2 of the | |
| 8 | License, or (at your option) any later version. | |
| 60478656 | 9 | |
| 8a4b65b4 UD |
10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Library General Public License for more details. | |
| 60478656 | 14 | |
| 8a4b65b4 UD |
15 | You should have received a copy of the GNU Library General Public |
| 16 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
| 17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 18 | Boston, MA 02111-1307, USA. */ | |
| 60478656 RM |
19 | |
| 20 | #ifndef _SYS_IPC_BUF_H | |
| 60478656 | 21 | |
| 8a4b65b4 | 22 | #define _SYS_IPC_BUF_H 1 |
| 60478656 | 23 | #include <features.h> |
| 8a4b65b4 | 24 | |
| 60478656 RM |
25 | #include <sys/types.h> |
| 26 | ||
| 27 | /* Mode bits for `msgget', `semget', and `shmget'. */ | |
| 28 | #define IPC_CREAT 01000 /* create key if key does not exist */ | |
| 29 | #define IPC_EXCL 02000 /* fail if key exists */ | |
| 30 | #define IPC_NOWAIT 04000 /* return error on wait */ | |
| 31 | ||
| 32 | /* Control commands for `msgctl', `semctl', and `shmctl'. */ | |
| 33 | #define IPC_RMID 0 /* remove identifier */ | |
| 34 | #define IPC_SET 1 /* set `ipc_perm' options */ | |
| 35 | #define IPC_STAT 2 /* get `ipc_perm' options */ | |
| 36 | ||
| 37 | ||
| 38 | __BEGIN_DECLS | |
| 39 | ||
| 60478656 RM |
40 | /* Special key values. */ |
| 41 | #define IPC_PRIVATE ((key_t) 0) /* private key */ | |
| 42 | ||
| 43 | ||
| 44 | /* Data structure used to pass permission information to IPC operations. */ | |
| 45 | struct ipc_perm | |
| 46 | { | |
| 47 | __uid_t uid; /* owner's user ID */ | |
| 48 | __gid_t gid; /* owner's group ID */ | |
| 49 | __uid_t cuid; /* creator's user ID */ | |
| 50 | __gid_t cgid; /* creator's group ID */ | |
| 51 | __mode_t mode; /* read/write permission */ | |
| 52 | }; | |
| 53 | ||
| 54 | __END_DECLS | |
| 55 | ||
| 8a4b65b4 | 56 | #endif /* _SYS_IPC_BUF_H */ |