| /* |
| * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. |
| * |
| * Copyright (C) 2002-2010 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 General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include "yaffs_packedtags1.h" |
| #include "yportenv.h" |
| |
| void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t) |
| { |
| pt->chunk_id = t->chunk_id; |
| pt->serial_number = t->serial_number; |
| pt->n_bytes = t->n_bytes; |
| pt->obj_id = t->obj_id; |
| pt->ecc = 0; |
| pt->deleted = (t->is_deleted) ? 0 : 1; |
| pt->unusedStuff = 0; |
| pt->shouldBeFF = 0xFFFFFFFF; |
| |
| } |
| |
| void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt) |
| { |
| static const __u8 allFF[] = |
| { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff }; |
| |
| if (memcmp(allFF, pt, sizeof(yaffs_PackedTags1))) { |
| t->block_bad = 0; |
| if (pt->shouldBeFF != 0xFFFFFFFF) |
| t->block_bad = 1; |
| t->chunk_used = 1; |
| t->obj_id = pt->obj_id; |
| t->chunk_id = pt->chunk_id; |
| t->n_bytes = pt->n_bytes; |
| t->ecc_result = YAFFS_ECC_RESULT_NO_ERROR; |
| t->is_deleted = (pt->deleted) ? 0 : 1; |
| t->serial_number = pt->serial_number; |
| } else { |
| memset(t, 0, sizeof(yaffs_ext_tags)); |
| } |
| } |