forked from AbleOS/ableos
47 lines
1 KiB
Plaintext
47 lines
1 KiB
Plaintext
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stn := @use("../../../libraries/stn/src/lib.hb");
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.{string, memory, buffer, log} := stn
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attributes := @use("rel:attributes.hb")
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datetime := @use("rel:datetime.hb")
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directory := @use("rel:file.hb")
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bios_parameter_block := @use("rel:bios_parameter_block.hb");
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.{bpb_sanity_check, ebr_sanity_check, fs_info_sanity_check} := bios_parameter_block;
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.{new_bpb, new_ebr, new_fs_info} := bios_parameter_block
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FAT12_THRESHOLD := 4085
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FAT16_THRESHOLD := 65525
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ExFAT := 0
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FAT12 := 1
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FAT16 := 2
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FAT32 := 3
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calculate_fat_type := fn(sector_size: int, total_clusters: int): int {
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if sector_size == 0 {
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return ExFAT
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} else if total_clusters < 4085 {
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return FAT12
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} else if total_clusters < 65525 {
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return FAT16
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} else {
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return FAT32
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}
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}
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main := fn(): int {
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bpb := new_bpb()
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ebr := new_ebr()
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fsi := new_fs_info()
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fat_type := calculate_fat_type(1, 100)
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if fat_type != FAT32 {
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log.warn("filesystem_fat32 driver only supports Fat32.\0")
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}
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bpb_sanity_check(bpb)
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ebr_sanity_check(ebr)
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fs_info_sanity_check(fsi)
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return 0
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}
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