# -*- coding: utf-8 -*-
"""The GUID Partition Table (GPT) volume system."""
from dfvfs.lib import definitions
from dfvfs.volume import factory
from dfvfs.volume import volume_system
[docs]
class GPTVolume(volume_system.Volume):
"""Volume that uses pyvsgpt."""
[docs]
def __init__(self, file_entry):
"""Initializes a GPT volume.
Args:
file_entry (GPTFileEntry): a GPT file entry.
"""
super(GPTVolume, self).__init__(file_entry.name)
self._file_entry = file_entry
def _Parse(self):
"""Extracts attributes and extents from the volume."""
vsgpt_partition = self._file_entry.GetGPTPartition()
volume_attribute = volume_system.VolumeAttribute(
'identifier', vsgpt_partition.identifier)
self._AddAttribute(volume_attribute)
volume_extent = volume_system.VolumeExtent(
vsgpt_partition.volume_offset, vsgpt_partition.size)
self._extents.append(volume_extent)
[docs]
class GPTVolumeSystem(volume_system.VolumeSystem):
"""Volume system that uses pyvsgpt."""
TYPE_INDICATOR = definitions.TYPE_INDICATOR_GPT
VOLUME_IDENTIFIER_PREFIX = 'p'
def _Parse(self):
"""Extracts sections and volumes from the volume system."""
root_file_entry = self._file_system.GetRootFileEntry()
for sub_file_entry in root_file_entry.sub_file_entries:
volume = GPTVolume(sub_file_entry)
self._AddVolume(volume)
factory.Factory.RegisterVolumeSystem(GPTVolumeSystem)