1/*
2 * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
3 *
4 * Copyright (C) 2002-2011 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 YAFFS2 tags, not YAFFS1tags. */
17
18#ifndef __YAFFS_PACKEDTAGS2_H__
19#define __YAFFS_PACKEDTAGS2_H__
20
21#include "yaffs_guts.h"
22#include "yaffs_ecc.h"
23
24struct yaffs_packed_tags2_tags_only {
25	unsigned seq_number;
26	unsigned obj_id;
27	unsigned chunk_id;
28	unsigned n_bytes;
29};
30
31struct yaffs_packed_tags2 {
32	struct yaffs_packed_tags2_tags_only t;
33	struct yaffs_ecc_other ecc;
34};
35
36/* Full packed tags with ECC, used for oob tags */
37void yaffs_pack_tags2(struct yaffs_packed_tags2 *pt,
38		      const struct yaffs_ext_tags *t, int tags_ecc);
39void yaffs_unpack_tags2(struct yaffs_ext_tags *t, struct yaffs_packed_tags2 *pt,
40			int tags_ecc);
41
42/* Only the tags part (no ECC for use with inband tags */
43void yaffs_pack_tags2_tags_only(struct yaffs_packed_tags2_tags_only *pt,
44				const struct yaffs_ext_tags *t);
45void yaffs_unpack_tags2_tags_only(struct yaffs_ext_tags *t,
46				  struct yaffs_packed_tags2_tags_only *pt);
47#endif
48