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#ifndef FAT_FAT_FAT_H_
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#ifndef FAT_FAT_FAT_H_
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#define FAT_FAT_FAT_H_
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#define FAT_FAT_FAT_H_
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#include "../../vfs/vfs.h"
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#include "../../vfs/vfs.h"
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#include <stdint.h>
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#include <stdint.h>
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#include <libblock.h>
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#define FAT1        0
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#define FAT1        0
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#define FAT_CLST_RES0   0x0000
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#define FAT_CLST_RES0   0x0000
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#define FAT_CLST_RES1   0x0001
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#define FAT_CLST_RES1   0x0001
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struct fat_bs;
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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_clusters_get(bs, dh, fc) \
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#define fat_clusters_get(bs, dh, fc) \
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    fat_cluster_walk((bs), (dh), (fc), NULL, NULL, (uint16_t) -1)
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    fat_cluster_walk((bs), (dh), (fc), NULL, (uint16_t) -1)
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extern uint16_t fat_cluster_walk(struct fat_bs *, dev_handle_t, fat_cluster_t,
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    fat_cluster_t *, uint16_t);
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#define fat_block_get(bs, np, off) \
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#define fat_block_get(bs, np, bn) \
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    _fat_block_get((bs), (np)->idx->dev_handle, (np)->firstc, (off))
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    _fat_block_get((bs), (np)->idx->dev_handle, (np)->firstc, (bn))
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extern struct block *_fat_block_get(struct fat_bs *, dev_handle_t,
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extern struct block *_fat_block_get(struct fat_bs *, dev_handle_t,
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    fat_cluster_t, off_t);
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    fat_cluster_t, bn_t);
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extern uint16_t fat_cluster_walk(struct fat_bs *, dev_handle_t, fat_cluster_t,
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    fat_cluster_t *, fat_cluster_t *, uint16_t);
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extern void fat_append_clusters(struct fat_bs *, struct fat_node *,
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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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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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    fat_cluster_t *, fat_cluster_t *);