yaffs_packedtags1.h 1.04 KB
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/*
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 * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
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 *
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 * Copyright (C) 2002-2011 Aleph One Ltd.
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 *   for Toby Churchill Ltd and Brightstar Engineering
 *
 * Created by Charles Manning <charles@aleph1.co.uk>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 2.1 as
 * published by the Free Software Foundation.
 *
 * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
 */

/* This is used to pack YAFFS1 tags, not YAFFS2 tags. */

#ifndef __YAFFS_PACKEDTAGS1_H__
#define __YAFFS_PACKEDTAGS1_H__

#include "yaffs_guts.h"

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struct yaffs_packed_tags1 {
	unsigned chunk_id:20;
	unsigned serial_number:2;
	unsigned n_bytes:10;
	unsigned obj_id:18;
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	unsigned ecc:12;
	unsigned deleted:1;
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	unsigned unused_stuff:1;
	unsigned should_be_ff;
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};
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void yaffs_pack_tags1(struct yaffs_packed_tags1 *pt,
		      const struct yaffs_ext_tags *t);
void yaffs_unpack_tags1(struct yaffs_ext_tags *t,
			const struct yaffs_packed_tags1 *pt);
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#endif