local superblock = struct {
	endian = "<",
	{sig="H"},
	{ver_maj="H"},
	{ver_min="H"},
	{state="H"},
	{total_inodes="I4"},
	{total_blocks="I4"},
	{reserved_blocks="I4"},
	{total_unalloc_blocks="I4"},
	{total_unalloc_inodes="I4"},
	{total_unalloc_inodes="I4"},
}