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/* Copyright (C) 1995-1997, 1999, 2002 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 */
/* Special key values. */
#define IPC_PRIVATE ((__key_t) 0) /* private key */
#ifdef __USE_MISC
/* Common mode bits. */
# define IPC_R 0400 /* read permission, same as S_IRUSR */
# define IPC_W 0200 /* write permission, same as S_IWUSR */
# define IPC_M 0x1000 /* control permission */
#endif
/* Data structure used to pass permission information to IPC operations. */
struct ipc_perm
{
__uid_t cuid; /* creator user id */
__gid_t cgid; /* creator group id */
__uid_t uid; /* user id */
__gid_t gid; /* group id */
__mode_t mode; /* r/w permission */
__uint16_t __seq; /* sequence # (to generate unique ipcid) */
__key_t __key; /* user specified msg/sem/shm key */
};
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