Root/target/linux/generic-2.6/files/fs/yaffs2/yaffs_packedtags1.h

1/*
2 * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
3 *
4 * Copyright (C) 2002-2007 Aleph One Ltd.
5 * for Toby Churchill Ltd and Brightstar Engineering
6 *
7 * Created by Charles Manning <charles@aleph1.co.uk>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU Lesser General Public License version 2.1 as
11 * published by the Free Software Foundation.
12 *
13 * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
14 */
15
16/* This is used to pack YAFFS1 tags, not YAFFS2 tags. */
17
18#ifndef __YAFFS_PACKEDTAGS1_H__
19#define __YAFFS_PACKEDTAGS1_H__
20
21#include "yaffs_guts.h"
22
23typedef struct {
24    unsigned chunkId:20;
25    unsigned serialNumber:2;
26    unsigned byteCount:10;
27    unsigned objectId:18;
28    unsigned ecc:12;
29    unsigned deleted:1;
30    unsigned unusedStuff:1;
31    unsigned shouldBeFF;
32
33} yaffs_PackedTags1;
34
35void yaffs_PackTags1(yaffs_PackedTags1 * pt, const yaffs_ExtendedTags * t);
36void yaffs_UnpackTags1(yaffs_ExtendedTags * t, const yaffs_PackedTags1 * pt);
37#endif
38

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