/*
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* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
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*
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* Copyright (C) 2002-2011 Aleph One Ltd.
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* for Toby Churchill Ltd and Brightstar Engineering
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*
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* Created by Charles Manning <charles@aleph1.co.uk>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include "yaffs_packedtags1.h"
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#include "yportenv.h"
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static const u8 all_ff[20] = {
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0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff
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};
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void yaffs_pack_tags1(struct yaffs_packed_tags1 *pt,
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const struct yaffs_ext_tags *t)
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{
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pt->chunk_id = t->chunk_id;
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pt->serial_number = t->serial_number;
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pt->n_bytes = t->n_bytes;
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pt->obj_id = t->obj_id;
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pt->ecc = 0;
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pt->deleted = (t->is_deleted) ? 0 : 1;
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pt->unused_stuff = 0;
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pt->should_be_ff = 0xffffffff;
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}
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void yaffs_unpack_tags1(struct yaffs_ext_tags *t,
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const struct yaffs_packed_tags1 *pt)
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{
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if (memcmp(all_ff, pt, sizeof(struct yaffs_packed_tags1))) {
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t->block_bad = 0;
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if (pt->should_be_ff != 0xffffffff)
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t->block_bad = 1;
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t->chunk_used = 1;
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t->obj_id = pt->obj_id;
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t->chunk_id = pt->chunk_id;
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t->n_bytes = pt->n_bytes;
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t->ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
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t->is_deleted = (pt->deleted) ? 0 : 1;
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t->serial_number = pt->serial_number;
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} else {
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memset(t, 0, sizeof(struct yaffs_ext_tags));
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}
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}
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