| /* Copyright (C) 1995, 96, 97, 98, 99, 2000, 2001 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #ifndef _SYS_IPC_H |
| # error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead." |
| #endif |
| |
| #include <bits/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. */ |
| #ifdef __USE_GNU |
| # define IPC_INFO 3 /* See ipcs. */ |
| #endif |
| |
| /* 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. */ |
| unsigned int uid; /* Owner's user ID. */ |
| unsigned int gid; /* Owner's group ID. */ |
| unsigned int cuid; /* Creator's user ID. */ |
| unsigned int cgid; /* Creator's group ID. */ |
| unsigned int mode; /* Read/write permission. */ |
| unsigned short int __seq; /* Sequence number. */ |
| unsigned short int __pad1; |
| unsigned long int __unused1; |
| unsigned long int __unused2; |
| }; |
