72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
#ifndef __FS__NTFS_H__
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#define __FS__NTFS_H__
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#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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#include <lib/part.h>
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#include <lib/blib.h>
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struct ntfs_bpb {
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uint8_t jump[3];
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char oem[8];
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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 fats_count;
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uint16_t directory_entries_count;
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uint16_t sector_totals;
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uint8_t media_descriptor_type;
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uint16_t sectors_per_fat_16;
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uint16_t sectors_per_track;
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uint16_t heads_count;
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uint32_t hidden_sectors_count;
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uint32_t large_sectors_count;
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// ntfs
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uint32_t sectors_per_fat_32;
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uint64_t sectors_count_64;
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uint64_t mft_cluster;
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} __attribute__((packed));
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struct ntfs_file_handle {
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struct volume *part;
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struct ntfs_bpb bpb;
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// file record sizes
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uint64_t file_record_size;
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uint64_t sectors_per_file_record;
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// MFT info, the offset and its runlist
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uint64_t mft_offset;
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uint8_t mft_run_list[256];
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// the runlist of the open file/directory
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uint8_t run_list[128];
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// The resident index, only for directories,
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// could be at the same time as a runlist
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uint8_t resident_index_size;
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// the resident data
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uint8_t resident_data_size;
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// we are using a union just for having different names, these
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// won't have need to be used at the same time
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union {
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uint8_t resident_index[1024];
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uint8_t resident_data[1024];
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};
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// info about the current file
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uint32_t size_bytes;
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};
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int ntfs_check_signature(struct volume *part);
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bool ntfs_open(struct ntfs_file_handle *ret, struct volume *part, const char *path);
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int ntfs_read(struct ntfs_file_handle *file, void *buf, uint64_t loc, uint64_t count);
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void ntfs_close(struct ntfs_file_handle *file);
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#endif |