/*

   * YAFFS: Yet another Flash File System . A NAND-flash specific file system.

   *

   * Copyright (C) 2002-2011 Aleph One Ltd.

   *   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 YAFFS2 tags, not YAFFS1tags. */
  
  #ifndef __YAFFS_PACKEDTAGS2_H__
  #define __YAFFS_PACKEDTAGS2_H__
  
  #include "yaffs_guts.h"
  #include "yaffs_ecc.h"

  struct yaffs_packed_tags2_tags_only {
  	unsigned seq_number;
  	unsigned obj_id;
  	unsigned chunk_id;
  	unsigned n_bytes;
  };

  struct yaffs_packed_tags2 {
  	struct yaffs_packed_tags2_tags_only t;
  	struct yaffs_ecc_other ecc;
  };

  /* Full packed tags with ECC, used for oob tags */
  void yaffs_pack_tags2(struct yaffs_packed_tags2 *pt,
  		      const struct yaffs_ext_tags *t, int tags_ecc);
  void yaffs_unpack_tags2(struct yaffs_ext_tags *t, struct yaffs_packed_tags2 *pt,
  			int tags_ecc);
  
  /* Only the tags part (no ECC for use with inband tags */
  void yaffs_pack_tags2_tags_only(struct yaffs_packed_tags2_tags_only *pt,
  				const struct yaffs_ext_tags *t);
  void yaffs_unpack_tags2_tags_only(struct yaffs_ext_tags *t,
  				  struct yaffs_packed_tags2_tags_only *pt);

  #endif