LXR uboot/fs/yaffs2/yaffs

   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 YAFFS1 tags, not YAFFS2 tags. */
  17
  18#ifndef __YAFFS_PACKEDTAGS1_H__
  19#define __YAFFS_PACKEDTAGS1_H__
  20
  21#include "yaffs_guts.h"
  22
  23struct yaffs_packed_tags1 {
  24        unsigned chunk_id:20;
  25        unsigned serial_number:2;
  26        unsigned n_bytes:10;
  27        unsigned obj_id:18;
  28        unsigned ecc:12;
  29        unsigned deleted:1;
  30        unsigned unused_stuff:1;
  31        unsigned should_be_ff;
  32
  33};
  34
  35void yaffs_pack_tags1(struct yaffs_packed_tags1 *pt,
  36                      const struct yaffs_ext_tags *t);
  37void yaffs_unpack_tags1(struct yaffs_ext_tags *t,
  38                        const struct yaffs_packed_tags1 *pt);
  39#endif
  40