This library exposes the following toplevel modules:
Qcow
Qcow_bitmap
Qcow_block_cache
Qcow_cache
Qcow_cluster_map
Qcow_config
Qcow_cstructs
Qcow_debug
Qcow_diet
Qcow_error
Qcow_header
Qcow_int
Qcow_int64
Qcow_locks
Qcow_metadata
Qcow_padded
Qcow_physical
Qcow_recycler
Qcow_rwlock
Qcow_s
Qcow_types
Qcow_virtual
Qcow_word_size