| 1 | /* |
| 2 | * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. |
| 3 | * |
| 4 | * Copyright (C) 2002-2010 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 General Public License version 2 as |
| 11 | * published by the Free Software Foundation. |
| 12 | */ |
| 13 | |
| 14 | #include "yaffs_packedtags1.h" |
| 15 | #include "yportenv.h" |
| 16 | |
| 17 | void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t) |
| 18 | { |
| 19 | pt->chunk_id = t->chunk_id; |
| 20 | pt->serial_number = t->serial_number; |
| 21 | pt->n_bytes = t->n_bytes; |
| 22 | pt->obj_id = t->obj_id; |
| 23 | pt->ecc = 0; |
| 24 | pt->deleted = (t->is_deleted) ? 0 : 1; |
| 25 | pt->unusedStuff = 0; |
| 26 | pt->shouldBeFF = 0xFFFFFFFF; |
| 27 | |
| 28 | } |
| 29 | |
| 30 | void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt) |
| 31 | { |
| 32 | static const __u8 allFF[] = |
| 33 | { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 34 | 0xff }; |
| 35 | |
| 36 | if (memcmp(allFF, pt, sizeof(yaffs_PackedTags1))) { |
| 37 | t->block_bad = 0; |
| 38 | if (pt->shouldBeFF != 0xFFFFFFFF) |
| 39 | t->block_bad = 1; |
| 40 | t->chunk_used = 1; |
| 41 | t->obj_id = pt->obj_id; |
| 42 | t->chunk_id = pt->chunk_id; |
| 43 | t->n_bytes = pt->n_bytes; |
| 44 | t->ecc_result = YAFFS_ECC_RESULT_NO_ERROR; |
| 45 | t->is_deleted = (pt->deleted) ? 0 : 1; |
| 46 | t->serial_number = pt->serial_number; |
| 47 | } else { |
| 48 | memset(t, 0, sizeof(yaffs_ext_tags)); |
| 49 | } |
| 50 | } |
| 51 | |
