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 24 struct yaffs_packed_tags2_tags_only { 25 unsigned seq_number; 26 unsigned obj_id; 27 unsigned chunk_id; 28 unsigned n_bytes; 29 }; 30 31 struct 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 */ 37 void yaffs_pack_tags2(struct yaffs_packed_tags2 *pt, 38 const struct yaffs_ext_tags *t, int tags_ecc); 39 void 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 */ 43 void yaffs_pack_tags2_tags_only(struct yaffs_packed_tags2_tags_only *pt, 44 const struct yaffs_ext_tags *t); 45 void yaffs_unpack_tags2_tags_only(struct yaffs_ext_tags *t, 46 struct yaffs_packed_tags2_tags_only *pt); 47 #endif 48