# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild from pkg_resources import parse_version from .kaitaistruct import __version__ as ks_version, KaitaiStruct, KaitaiStream, BytesIO import collections from enum import Enum if parse_version(ks_version) < parse_version('0.7'): raise Exception("Incompatible Kaitai Struct Python API: 0.7 or later is required, but you have %s" % (ks_version)) class Lvm2(KaitaiStruct): """### Building a test file ``` dd if=/dev/zero of=image.img bs=512 count=$(( 4 * 1024 * 2 )) sudo losetup /dev/loop1 image.img sudo pvcreate /dev/loop1 sudo vgcreate vg_test /dev/loop1 sudo lvcreate --name lv_test1 vg_test sudo losetup -d /dev/loop1 ``` .. seealso:: Source - https://github.com/libyal/libvslvm/blob/master/documentation/Logical%20Volume%20Manager%20(LVM)%20format.asciidoc """ SEQ_FIELDS = ["pv"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['pv']['start'] = self._io.pos() self.pv = self._root.PhysicalVolume(self._io, self, self._root) self.pv._read() self._debug['pv']['end'] = self._io.pos() class PhysicalVolume(KaitaiStruct): SEQ_FIELDS = ["empty_sector", "label"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['empty_sector']['start'] = self._io.pos() self.empty_sector = self._io.read_bytes(self._root.sector_size) self._debug['empty_sector']['end'] = self._io.pos() self._debug['label']['start'] = self._io.pos() self.label = self._root.PhysicalVolume.Label(self._io, self, self._root) self.label._read() self._debug['label']['end'] = self._io.pos() class Label(KaitaiStruct): SEQ_FIELDS = ["label_header", "volume_header"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['label_header']['start'] = self._io.pos() self.label_header = self._root.PhysicalVolume.Label.LabelHeader(self._io, self, self._root) self.label_header._read() self._debug['label_header']['end'] = self._io.pos() self._debug['volume_header']['start'] = self._io.pos() self.volume_header = self._root.PhysicalVolume.Label.VolumeHeader(self._io, self, self._root) self.volume_header._read() self._debug['volume_header']['end'] = self._io.pos() class LabelHeader(KaitaiStruct): SEQ_FIELDS = ["signature", "sector_number", "checksum", "label_header_"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['signature']['start'] = self._io.pos() self.signature = self._io.ensure_fixed_contents(b"\x4C\x41\x42\x45\x4C\x4F\x4E\x45") self._debug['signature']['end'] = self._io.pos() self._debug['sector_number']['start'] = self._io.pos() self.sector_number = self._io.read_u8le() self._debug['sector_number']['end'] = self._io.pos() self._debug['checksum']['start'] = self._io.pos() self.checksum = self._io.read_u4le() self._debug['checksum']['end'] = self._io.pos() self._debug['label_header_']['start'] = self._io.pos() self.label_header_ = self._root.PhysicalVolume.Label.LabelHeader.LabelHeader(self._io, self, self._root) self.label_header_._read() self._debug['label_header_']['end'] = self._io.pos() class LabelHeader(KaitaiStruct): SEQ_FIELDS = ["data_offset", "type_indicator"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['data_offset']['start'] = self._io.pos() self.data_offset = self._io.read_u4le() self._debug['data_offset']['end'] = self._io.pos() self._debug['type_indicator']['start'] = self._io.pos() self.type_indicator = self._io.ensure_fixed_contents(b"\x4C\x56\x4D\x32\x20\x30\x30\x31") self._debug['type_indicator']['end'] = self._io.pos() class VolumeHeader(KaitaiStruct): SEQ_FIELDS = ["id", "size", "data_area_descriptors", "metadata_area_descriptors"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['id']['start'] = self._io.pos() self.id = (self._io.read_bytes(32)).decode(u"ascii") self._debug['id']['end'] = self._io.pos() self._debug['size']['start'] = self._io.pos() self.size = self._io.read_u8le() self._debug['size']['end'] = self._io.pos() self._debug['data_area_descriptors']['start'] = self._io.pos() self.data_area_descriptors = [] i = 0 while True: if not 'arr' in self._debug['data_area_descriptors']: self._debug['data_area_descriptors']['arr'] = [] self._debug['data_area_descriptors']['arr'].append({'start': self._io.pos()}) _t_data_area_descriptors = self._root.PhysicalVolume.Label.VolumeHeader.DataAreaDescriptor(self._io, self, self._root) _t_data_area_descriptors._read() _ = _t_data_area_descriptors self.data_area_descriptors.append(_) self._debug['data_area_descriptors']['arr'][len(self.data_area_descriptors) - 1]['end'] = self._io.pos() if ((_.size != 0) and (_.offset != 0)) : break i += 1 self._debug['data_area_descriptors']['end'] = self._io.pos() self._debug['metadata_area_descriptors']['start'] = self._io.pos() self.metadata_area_descriptors = [] i = 0 while True: if not 'arr' in self._debug['metadata_area_descriptors']: self._debug['metadata_area_descriptors']['arr'] = [] self._debug['metadata_area_descriptors']['arr'].append({'start': self._io.pos()}) _t_metadata_area_descriptors = self._root.PhysicalVolume.Label.VolumeHeader.MetadataAreaDescriptor(self._io, self, self._root) _t_metadata_area_descriptors._read() _ = _t_metadata_area_descriptors self.metadata_area_descriptors.append(_) self._debug['metadata_area_descriptors']['arr'][len(self.metadata_area_descriptors) - 1]['end'] = self._io.pos() if ((_.size != 0) and (_.offset != 0)) : break i += 1 self._debug['metadata_area_descriptors']['end'] = self._io.pos() class DataAreaDescriptor(KaitaiStruct): SEQ_FIELDS = ["offset", "size"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['offset']['start'] = self._io.pos() self.offset = self._io.read_u8le() self._debug['offset']['end'] = self._io.pos() self._debug['size']['start'] = self._io.pos() self.size = self._io.read_u8le() self._debug['size']['end'] = self._io.pos() @property def data(self): if hasattr(self, '_m_data'): return self._m_data if hasattr(self, '_m_data') else None if self.size != 0: _pos = self._io.pos() self._io.seek(self.offset) self._debug['_m_data']['start'] = self._io.pos() self._m_data = (self._io.read_bytes(self.size)).decode(u"ascii") self._debug['_m_data']['end'] = self._io.pos() self._io.seek(_pos) return self._m_data if hasattr(self, '_m_data') else None class MetadataAreaDescriptor(KaitaiStruct): SEQ_FIELDS = ["offset", "size"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['offset']['start'] = self._io.pos() self.offset = self._io.read_u8le() self._debug['offset']['end'] = self._io.pos() self._debug['size']['start'] = self._io.pos() self.size = self._io.read_u8le() self._debug['size']['end'] = self._io.pos() @property def data(self): if hasattr(self, '_m_data'): return self._m_data if hasattr(self, '_m_data') else None if self.size != 0: _pos = self._io.pos() self._io.seek(self.offset) self._debug['_m_data']['start'] = self._io.pos() self._raw__m_data = self._io.read_bytes(self.size) io = KaitaiStream(BytesIO(self._raw__m_data)) self._m_data = self._root.PhysicalVolume.Label.VolumeHeader.MetadataArea(io, self, self._root) self._m_data._read() self._debug['_m_data']['end'] = self._io.pos() self._io.seek(_pos) return self._m_data if hasattr(self, '_m_data') else None class MetadataArea(KaitaiStruct): """According to `[REDHAT]` the metadata area is a circular buffer. New metadata is appended to the old metadata and then the pointer to the start of it is updated. The metadata area, therefore, can contain copies of older versions of the metadata.""" SEQ_FIELDS = ["header"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['header']['start'] = self._io.pos() self.header = self._root.PhysicalVolume.Label.VolumeHeader.MetadataArea.MetadataAreaHeader(self._io, self, self._root) self.header._read() self._debug['header']['end'] = self._io.pos() class MetadataAreaHeader(KaitaiStruct): SEQ_FIELDS = ["checksum", "signature", "version", "metadata_area_offset", "metadata_area_size", "raw_location_descriptors"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['checksum']['start'] = self._io.pos() self.checksum = self._root.PhysicalVolume.Label.VolumeHeader.MetadataArea.MetadataAreaHeader(self._io, self, self._root) self.checksum._read() self._debug['checksum']['end'] = self._io.pos() self._debug['signature']['start'] = self._io.pos() self.signature = self._io.ensure_fixed_contents(b"\x20\x4C\x56\x4D\x32\x20\x78\x5B\x35\x41\x25\x72\x30\x4E\x2A\x3E") self._debug['signature']['end'] = self._io.pos() self._debug['version']['start'] = self._io.pos() self.version = self._io.read_u4le() self._debug['version']['end'] = self._io.pos() self._debug['metadata_area_offset']['start'] = self._io.pos() self.metadata_area_offset = self._io.read_u8le() self._debug['metadata_area_offset']['end'] = self._io.pos() self._debug['metadata_area_size']['start'] = self._io.pos() self.metadata_area_size = self._io.read_u8le() self._debug['metadata_area_size']['end'] = self._io.pos() self._debug['raw_location_descriptors']['start'] = self._io.pos() self.raw_location_descriptors = [] i = 0 while True: if not 'arr' in self._debug['raw_location_descriptors']: self._debug['raw_location_descriptors']['arr'] = [] self._debug['raw_location_descriptors']['arr'].append({'start': self._io.pos()}) _t_raw_location_descriptors = self._root.PhysicalVolume.Label.VolumeHeader.MetadataArea.MetadataAreaHeader.RawLocationDescriptor(self._io, self, self._root) _t_raw_location_descriptors._read() _ = _t_raw_location_descriptors self.raw_location_descriptors.append(_) self._debug['raw_location_descriptors']['arr'][len(self.raw_location_descriptors) - 1]['end'] = self._io.pos() if ((_.offset != 0) and (_.size != 0) and (_.checksum != 0)) : break i += 1 self._debug['raw_location_descriptors']['end'] = self._io.pos() class RawLocationDescriptor(KaitaiStruct): """The data area size can be 0. It is assumed it represents the remaining available data.""" class RawLocationDescriptorFlags(Enum): raw_location_ignored = 1 SEQ_FIELDS = ["offset", "size", "checksum", "flags"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['offset']['start'] = self._io.pos() self.offset = self._io.read_u8le() self._debug['offset']['end'] = self._io.pos() self._debug['size']['start'] = self._io.pos() self.size = self._io.read_u8le() self._debug['size']['end'] = self._io.pos() self._debug['checksum']['start'] = self._io.pos() self.checksum = self._io.read_u4le() self._debug['checksum']['end'] = self._io.pos() self._debug['flags']['start'] = self._io.pos() self.flags = KaitaiStream.resolve_enum(self._root.PhysicalVolume.Label.VolumeHeader.MetadataArea.MetadataAreaHeader.RawLocationDescriptor.RawLocationDescriptorFlags, self._io.read_u4le()) self._debug['flags']['end'] = self._io.pos() @property def metadata(self): if hasattr(self, '_m_metadata'): return self._m_metadata if hasattr(self, '_m_metadata') else None _pos = self._io.pos() self._io.seek(self.metadata_area_offset) self._debug['_m_metadata']['start'] = self._io.pos() self._m_metadata = self._io.read_bytes(self.metadata_area_size) self._debug['_m_metadata']['end'] = self._io.pos() self._io.seek(_pos) return self._m_metadata if hasattr(self, '_m_metadata') else None @property def sector_size(self): if hasattr(self, '_m_sector_size'): return self._m_sector_size if hasattr(self, '_m_sector_size') else None self._m_sector_size = 512 return self._m_sector_size if hasattr(self, '_m_sector_size') else None