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55 lines
2.1 KiB
C
55 lines
2.1 KiB
C
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/* Copyright (C) 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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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 <sys/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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#define IPC_INFO 3 /* See ipcs. */
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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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__mode_t mode; /* Read/write permission. */
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unsigned short int __seq; /* Sequence number. */
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unsigned short int __pad1;
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unsigned long int __unused1;
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unsigned long int __unused2;
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};
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