| 1 | /* Copyright (C) 1995, 96, 97, 98, 99, 2000, 2001 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, write to the Free |
|---|
| 16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
|---|
| 17 | 02111-1307 USA. */ |
|---|
| 18 | |
|---|
| 19 | #ifndef _SYS_IPC_H |
|---|
| 20 | # error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead." |
|---|
| 21 | #endif |
|---|
| 22 | |
|---|
| 23 | #include <bits/types.h> |
|---|
| 24 | |
|---|
| 25 | /* Mode bits for `msgget', `semget', and `shmget'. */ |
|---|
| 26 | #define IPC_CREAT 01000 /* Create key if key does not exist. */ |
|---|
| 27 | #define IPC_EXCL 02000 /* Fail if key exists. */ |
|---|
| 28 | #define IPC_NOWAIT 04000 /* Return error on wait. */ |
|---|
| 29 | |
|---|
| 30 | /* Control commands for `msgctl', `semctl', and `shmctl'. */ |
|---|
| 31 | #define IPC_RMID 0 /* Remove identifier. */ |
|---|
| 32 | #define IPC_SET 1 /* Set `ipc_perm' options. */ |
|---|
| 33 | #define IPC_STAT 2 /* Get `ipc_perm' options. */ |
|---|
| 34 | #ifdef __USE_GNU |
|---|
| 35 | # define IPC_INFO 3 /* See ipcs. */ |
|---|
| 36 | #endif |
|---|
| 37 | |
|---|
| 38 | /* Special key values. */ |
|---|
| 39 | #define IPC_PRIVATE ((__key_t) 0) /* Private key. */ |
|---|
| 40 | |
|---|
| 41 | |
|---|
| 42 | /* Data structure used to pass permission information to IPC operations. */ |
|---|
| 43 | struct ipc_perm |
|---|
| 44 | { |
|---|
| 45 | __key_t __key; /* Key. */ |
|---|
| 46 | unsigned int uid; /* Owner's user ID. */ |
|---|
| 47 | unsigned int gid; /* Owner's group ID. */ |
|---|
| 48 | unsigned int cuid; /* Creator's user ID. */ |
|---|
| 49 | unsigned int cgid; /* Creator's group ID. */ |
|---|
| 50 | unsigned int mode; /* Read/write permission. */ |
|---|
| 51 | unsigned short int __seq; /* Sequence number. */ |
|---|
| 52 | unsigned short int __pad1; |
|---|
| 53 | unsigned long int __unused1; |
|---|
| 54 | unsigned long int __unused2; |
|---|
| 55 | }; |
|---|
