| [2] | 1 | /* Copyright (C) 1995, 96, 97, 98, 99, 2000, 2001 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, write to the Free |
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| 16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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| 17 | 02111-1307 USA. */ |
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| 18 | |
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| 19 | #ifndef _SYS_IPC_H |
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| 20 | # error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead." |
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| 21 | #endif |
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| 22 | |
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| 23 | #include <bits/types.h> |
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| 24 | |
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| 25 | /* Mode bits for `msgget', `semget', and `shmget'. */ |
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| 26 | #define IPC_CREAT 01000 /* Create key if key does not exist. */ |
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| 27 | #define IPC_EXCL 02000 /* Fail if key exists. */ |
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| 28 | #define IPC_NOWAIT 04000 /* Return error on wait. */ |
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| 29 | |
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| 30 | /* Control commands for `msgctl', `semctl', and `shmctl'. */ |
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| 31 | #define IPC_RMID 0 /* Remove identifier. */ |
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| 32 | #define IPC_SET 1 /* Set `ipc_perm' options. */ |
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| 33 | #define IPC_STAT 2 /* Get `ipc_perm' options. */ |
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| 34 | #ifdef __USE_GNU |
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| 35 | # define IPC_INFO 3 /* See ipcs. */ |
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| 36 | #endif |
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| 37 | |
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| 38 | /* Special key values. */ |
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| 39 | #define IPC_PRIVATE ((__key_t) 0) /* Private key. */ |
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| 40 | |
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| 41 | |
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| 42 | /* Data structure used to pass permission information to IPC operations. */ |
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| 43 | struct ipc_perm |
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| 44 | { |
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| 45 | __key_t __key; /* Key. */ |
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| 46 | unsigned int uid; /* Owner's user ID. */ |
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| 47 | unsigned int gid; /* Owner's group ID. */ |
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| 48 | unsigned int cuid; /* Creator's user ID. */ |
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| 49 | unsigned int cgid; /* Creator's group ID. */ |
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| 50 | unsigned int mode; /* Read/write permission. */ |
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| 51 | unsigned short int __seq; /* Sequence number. */ |
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| 52 | unsigned short int __pad1; |
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| 53 | unsigned long int __unused1; |
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| 54 | unsigned long int __unused2; |
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| 55 | }; |
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