2 * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
4 * Copyright (C) 2002-2011 Aleph One Ltd.
5 * for Toby Churchill Ltd and Brightstar Engineering
7 * Created by Charles Manning <charles@aleph1.co.uk>
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.
14 #include "yaffs_packedtags1.h"
17 static const u8 all_ff
[20] = {
18 0xff, 0xff, 0xff, 0xff,
19 0xff, 0xff, 0xff, 0xff,
20 0xff, 0xff, 0xff, 0xff,
21 0xff, 0xff, 0xff, 0xff,
22 0xff, 0xff, 0xff, 0xff
25 void yaffs_pack_tags1(struct yaffs_packed_tags1
*pt
,
26 const struct yaffs_ext_tags
*t
)
28 pt
->chunk_id
= t
->chunk_id
;
29 pt
->serial_number
= t
->serial_number
;
30 pt
->n_bytes
= t
->n_bytes
;
31 pt
->obj_id
= t
->obj_id
;
33 pt
->deleted
= (t
->is_deleted
) ? 0 : 1;
35 pt
->should_be_ff
= 0xffffffff;
38 void yaffs_unpack_tags1(struct yaffs_ext_tags
*t
,
39 const struct yaffs_packed_tags1
*pt
)
42 if (memcmp(all_ff
, pt
, sizeof(struct yaffs_packed_tags1
))) {
44 if (pt
->should_be_ff
!= 0xffffffff)
47 t
->obj_id
= pt
->obj_id
;
48 t
->chunk_id
= pt
->chunk_id
;
49 t
->n_bytes
= pt
->n_bytes
;
50 t
->ecc_result
= YAFFS_ECC_RESULT_NO_ERROR
;
51 t
->is_deleted
= (pt
->deleted
) ? 0 : 1;
52 t
->serial_number
= pt
->serial_number
;
54 memset(t
, 0, sizeof(struct yaffs_ext_tags
));