mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-02 09:33:31 +03:00
47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
/* Copyright (C) 1995-2017 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, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#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 */
|
|
|
|
|
|
/* Data structure used to pass permission information to IPC operations. */
|
|
struct ipc_perm
|
|
{
|
|
__uid_t uid; /* owner's user ID */
|
|
__gid_t gid; /* owner's group ID */
|
|
__uid_t cuid; /* creator's user ID */
|
|
__gid_t cgid; /* creator's group ID */
|
|
__mode_t mode; /* read/write permission */
|
|
};
|