40 lines
991 B
C
40 lines
991 B
C
#ifndef __FS__FAT32_H__
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#define __FS__FAT32_H__
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#include <stdint.h>
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#include <lib/part.h>
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struct fat32_context {
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struct volume *part;
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int type;
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uint16_t bytes_per_sector;
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uint8_t sectors_per_cluster;
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uint16_t reserved_sectors;
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uint8_t number_of_fats;
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uint32_t hidden_sectors;
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uint32_t sectors_per_fat;
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uint32_t fat_start_lba;
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uint32_t data_start_lba;
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uint32_t root_directory_cluster;
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uint16_t root_entries;
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uint32_t root_start;
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uint32_t root_size;
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};
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struct fat32_file_handle {
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struct fat32_context context;
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uint32_t first_cluster;
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uint32_t size_bytes;
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uint32_t size_clusters;
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uint32_t *cluster_chain;
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size_t chain_len;
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};
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int fat32_check_signature(struct volume *part);
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bool fat32_open(struct fat32_file_handle *ret, struct volume *part, const char *path);
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void fat32_read(struct fat32_file_handle *file, void *buf, uint64_t loc, uint64_t count);
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void fat32_close(struct fat32_file_handle *file);
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#endif
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