import struct

def print_mos(f, offset, idx):
    offset += 0x28
    offset += idx * 0x10
    f.seek(offset)
    asize = f.read(4)
    vdev = f.read(4)
    offset = f.read(8)

    asize = (struct.unpack("<L", asize)[0] & 0xFFFFFF) << 9
    vdev = struct.unpack("<L", vdev)[0]
    offset = struct.unpack("<Q", offset)[0]
    gang = (offset & 0x8000000000000000) != 0
    offset = ((offset & 0x7FFFFFFFFFFFFFFF) << 9) + 0x400000
    print "block %d @%d:%x, size %d, gang %d" % (idx, vdev, offset, asize, gang)

f = open('disk', 'rb')

pos = 0
while True:
    f.seek(pos)
    magic = f.read(4)
    if len(magic) == 0:
        break
    if (struct.unpack("<L", magic)[0] == 0x00BAB10C):
        f.seek(pos+0x10)
        print "Uberblock found at %x, tgx %d" % (pos, struct.unpack("<Q", f.read(8))[0])
        print_mos(f, pos, 0)
        print_mos(f, pos, 1)
        print_mos(f, pos, 2)
    if (struct.unpack("<L", magic)[0] == 0x010E0A00):
        print "block at %x -- %x" % (pos, (pos - 0x400000) >> 9)
    pos += 0x200