yaffs_packedtags1.h 1.0 KB

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