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- /*
- * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
- *
- * Copyright (C) 2002-2011 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"
- static const u8 all_ff[20] = {
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff,
- 0xff, 0xff, 0xff, 0xff
- };
- void yaffs_pack_tags1(struct yaffs_packed_tags1 *pt,
- const struct 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->unused_stuff = 0;
- pt->should_be_ff = 0xffffffff;
- }
- void yaffs_unpack_tags1(struct yaffs_ext_tags *t,
- const struct yaffs_packed_tags1 *pt)
- {
- if (memcmp(all_ff, pt, sizeof(struct yaffs_packed_tags1))) {
- t->block_bad = 0;
- if (pt->should_be_ff != 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(struct yaffs_ext_tags));
- }
- }
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