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56 lines
2.0 KiB
C
56 lines
2.0 KiB
C
8 years ago
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/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _SYS_IPC_H
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# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
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#endif
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#include <bits/types.h>
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/* Mode bits for `msgget', `semget', and `shmget'. */
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#define IPC_CREAT 01000 /* Create key if key does not exist. */
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#define IPC_EXCL 02000 /* Fail if key exists. */
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#define IPC_NOWAIT 04000 /* Return error on wait. */
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/* Control commands for `msgctl', `semctl', and `shmctl'. */
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#define IPC_RMID 0 /* Remove identifier. */
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#define IPC_SET 1 /* Set `ipc_perm' options. */
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#define IPC_STAT 2 /* Get `ipc_perm' options. */
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#ifdef __USE_GNU
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# define IPC_INFO 3 /* See ipcs. */
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#endif
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/* Special key values. */
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#define IPC_PRIVATE ((__key_t) 0) /* Private key. */
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/* Data structure used to pass permission information to IPC operations. */
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struct ipc_perm
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{
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__key_t __key; /* Key. */
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__uid_t uid; /* Owner's user ID. */
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__gid_t gid; /* Owner's group ID. */
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__uid_t cuid; /* Creator's user ID. */
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__gid_t cgid; /* Creator's group ID. */
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unsigned short int mode; /* Read/write permission. */
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unsigned short int __pad1;
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unsigned short int __seq; /* Sequence number. */
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unsigned short int __pad2;
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__syscall_ulong_t __glibc_reserved1;
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__syscall_ulong_t __glibc_reserved2;
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};
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