1/* utils/ashmem.h
2 **
3 ** Copyright 2008 The Android Open Source Project
4 **
5 ** This file is dual licensed.  It may be redistributed and/or modified
6 ** under the terms of the Apache 2.0 License OR version 2 of the GNU
7 ** General Public License.
8 */
9
10#ifndef _UTILS_ASHMEM_H
11#define _UTILS_ASHMEM_H
12
13#include <linux/limits.h>
14#include <linux/ioctl.h>
15
16#define ASHMEM_NAME_LEN		256
17
18#define ASHMEM_NAME_DEF		"dev/ashmem"
19
20/* Return values from ASHMEM_PIN: Was the mapping purged while unpinned? */
21#define ASHMEM_NOT_REAPED	0
22#define ASHMEM_WAS_REAPED	1
23
24/* Return values from ASHMEM_UNPIN: Is the mapping now pinned or unpinned? */
25#define ASHMEM_NOW_UNPINNED	0
26#define ASHMEM_NOW_PINNED	1
27
28#define __ASHMEMIOC		0x77
29
30#define ASHMEM_SET_NAME		_IOW(__ASHMEMIOC, 1, char[ASHMEM_NAME_LEN])
31#define ASHMEM_GET_NAME		_IOR(__ASHMEMIOC, 2, char[ASHMEM_NAME_LEN])
32#define ASHMEM_SET_SIZE		_IOW(__ASHMEMIOC, 3, size_t)
33#define ASHMEM_GET_SIZE		_IO(__ASHMEMIOC, 4)
34#define ASHMEM_SET_PROT_MASK	_IOW(__ASHMEMIOC, 5, unsigned long)
35#define ASHMEM_GET_PROT_MASK	_IO(__ASHMEMIOC, 6)
36#define ASHMEM_PIN		_IO(__ASHMEMIOC, 7)
37#define ASHMEM_UNPIN		_IO(__ASHMEMIOC, 8)
38#define ASHMEM_ISPINNED		_IO(__ASHMEMIOC, 9)
39#define ASHMEM_PURGE_ALL_CACHES	_IO(__ASHMEMIOC, 10)
40
41#endif	/* _UTILS_ASHMEM_H */
42