-- | Given a superblock, ensure that its magic number is as-expected.
sbMagicValid :: Superblock -> Bool
sbMagicValid sb = (sb ^. magic) == 0xEF53
sbMagicValid :: Superblock -> Bool
sbMagicValid sb = (sb ^. magic) == 0xEF53
sbMagicValid sb = (sb ^. magic) == 0xEF53