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/* internally used to mark root directory's parent */
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/* internally used to mark root directory's parent */
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#define FAT_CLST_ROOTPAR    FAT_CLST_RES0
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#define FAT_CLST_ROOTPAR    FAT_CLST_RES0
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/* internally used to mark root directory */
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/* internally used to mark root directory */
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#define FAT_CLST_ROOT       FAT_CLST_RES1
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#define FAT_CLST_ROOT       FAT_CLST_RES1
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 - 
 
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/* forward declarations */
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/* forward declarations */
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struct block;
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struct block;
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struct fat_node;
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struct fat_node;
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struct fat_bs;
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typedef uint16_t fat_cluster_t;
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typedef uint16_t fat_cluster_t;
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#define fat_block_get(np, off) \
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#define fat_block_get(bs, np, off) \
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    _fat_block_get((np)->idx->dev_handle, (np)->firstc, (off))
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    _fat_block_get((bs), (np)->idx->dev_handle, (np)->firstc, (off))
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extern struct block *_fat_block_get(dev_handle_t, fat_cluster_t, off_t);
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extern struct block *_fat_block_get(struct fat_bs *, dev_handle_t,
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extern uint16_t _fat_blcks_get(dev_handle_t, fat_cluster_t, fat_cluster_t *);
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extern uint16_t fat_bps_get(dev_handle_t);
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    fat_cluster_t, off_t);
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extern void fat_append_clusters(struct fat_node *, fat_cluster_t);
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extern uint16_t _fat_blcks_get(struct fat_bs *, dev_handle_t, fat_cluster_t,
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extern int fat_alloc_clusters(dev_handle_t, unsigned, fat_cluster_t *,
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    fat_cluster_t *);
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    fat_cluster_t *);
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extern void fat_alloc_shadow_clusters(dev_handle_t, fat_cluster_t *, unsigned);
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extern void fat_mark_cluster(dev_handle_t, unsigned, fat_cluster_t,
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extern void fat_append_clusters(struct fat_bs *, struct fat_node *,
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    fat_cluster_t);
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    fat_cluster_t);
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extern int fat_alloc_clusters(struct fat_bs *, dev_handle_t, unsigned,
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    fat_cluster_t *, fat_cluster_t *);
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extern void fat_alloc_shadow_clusters(struct fat_bs *, dev_handle_t,
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    fat_cluster_t *, unsigned);
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extern void fat_mark_cluster(struct fat_bs *, dev_handle_t, unsigned,
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    fat_cluster_t, fat_cluster_t);
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extern void fat_fill_gap(struct fat_node *, fat_cluster_t, off_t);
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extern void fat_fill_gap(struct fat_bs *, struct fat_node *, fat_cluster_t,
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    off_t);
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#endif
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#endif
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/**
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/**
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 * @}
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 * @}