:py:mod:`dissect.hypervisor.disk.qcow2`
=======================================

.. py:module:: dissect.hypervisor.disk.qcow2


Module Contents
---------------

Classes
~~~~~~~

.. autoapisummary::

   dissect.hypervisor.disk.qcow2.QCow2
   dissect.hypervisor.disk.qcow2.L2Table
   dissect.hypervisor.disk.qcow2.QCow2Snapshot



Functions
~~~~~~~~~

.. autoapisummary::
   :nosignatures:

   dissect.hypervisor.disk.qcow2.offset_into_cluster
   dissect.hypervisor.disk.qcow2.offset_into_subcluster
   dissect.hypervisor.disk.qcow2.size_to_clusters
   dissect.hypervisor.disk.qcow2.size_to_subclusters
   dissect.hypervisor.disk.qcow2.offset_to_l1_index
   dissect.hypervisor.disk.qcow2.offset_to_l2_index
   dissect.hypervisor.disk.qcow2.offset_to_sc_index
   dissect.hypervisor.disk.qcow2.get_cluster_type
   dissect.hypervisor.disk.qcow2.get_subcluster_type
   dissect.hypervisor.disk.qcow2.get_subcluster_range_type
   dissect.hypervisor.disk.qcow2.count_contiguous_subclusters



Attributes
~~~~~~~~~~

.. autoapisummary::

   dissect.hypervisor.disk.qcow2.HAS_ZSTD
   dissect.hypervisor.disk.qcow2.ALLOW_NO_BACKING_FILE


.. py:data:: HAS_ZSTD
   :value: True

   

.. py:data:: ALLOW_NO_BACKING_FILE
   :value: 1

   

.. py:class:: QCow2(fh, data_file=None, backing_file=None)


   Bases: :py:obj:`dissect.util.stream.AlignedStream`

   QCOW2 virtual disk implementation.

   Supports both data-file and backing-file, but must be manually given as arguments.

   If a data-file is required, it's required to manually pass a file like object
   as the `data_file` argument.

   A backing-file can optionally be skipped if `qcow2.ALLOW_NO_BACKING_FILE` is passed
   as the `backing_file` argument. In this case, any reads from a backing file will result
   in all null bytes being read.

   .. py:property:: has_backing_file


   .. py:property:: has_data_file


   .. py:property:: has_subclusters


   .. py:method:: snapshots()


   .. py:method:: l1_table()


   .. py:method:: l2_table(l2_offset)



.. py:class:: L2Table(qcow2, offset)


   Convenience class for accessing the L2 table.

   .. py:method:: entry(idx)


   .. py:method:: bitmap(idx)



.. py:class:: QCow2Snapshot(qcow2, offset)


   Wrapper class for snapshot table entries.

   .. py:method:: open()


   .. py:method:: l1_table()



.. py:function:: offset_into_cluster(qcow2, offset)


.. py:function:: offset_into_subcluster(qcow2, offset)


.. py:function:: size_to_clusters(qcow2, size)


.. py:function:: size_to_subclusters(qcow2, size)


.. py:function:: offset_to_l1_index(qcow2, offset)


.. py:function:: offset_to_l2_index(qcow2, offset)


.. py:function:: offset_to_sc_index(qcow2, offset)


.. py:function:: get_cluster_type(qcow2, l2_entry)


.. py:function:: get_subcluster_type(qcow2, l2_entry, l2_bitmap, sc_index)


.. py:function:: get_subcluster_range_type(qcow2, l2_entry, l2_bitmap, sc_from)


.. py:function:: count_contiguous_subclusters(qcow2, nb_clusters, sc_index, l2_table, l2_index)