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package fat
import "github.com/mitchellh/go-fs"
// FATType is a simple enum of the available FAT filesystem types.
type FATType uint8
const (
FAT12 FATType = iota
FAT16
FAT32
)
// TypeForDevice determines the usable FAT type based solely on
// size information about the block device.
func TypeForDevice(device fs.BlockDevice) FATType {
sizeInMB := device.Len() / (1024 * 1024)
switch {
case sizeInMB < 4:
return FAT12
case sizeInMB < 512:
return FAT16
default:
return FAT32
}
}
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