Source code for dfvfs.analyzer.lvm_analyzer_helper
# -*- coding: utf-8 -*-
"""The Logical Volume Manager (LVM) format analyzer helper implementation."""
from dfvfs.analyzer import analyzer
from dfvfs.analyzer import analyzer_helper
from dfvfs.analyzer import specification
from dfvfs.lib import definitions
[docs]
class LVMAnalyzerHelper(analyzer_helper.AnalyzerHelper):
"""LVM analyzer helper."""
FORMAT_CATEGORIES = frozenset([
definitions.FORMAT_CATEGORY_VOLUME_SYSTEM])
TYPE_INDICATOR = definitions.TYPE_INDICATOR_LVM
[docs]
def GetFormatSpecification(self):
"""Retrieves the format specification.
Returns:
FormatSpecification: format specification or None if the format cannot
be defined by a specification object.
"""
format_specification = specification.FormatSpecification(
self.type_indicator)
# LVM signature.
format_specification.AddNewSignature(b'LABELONE', offset=0)
format_specification.AddNewSignature(b'LABELONE', offset=512)
format_specification.AddNewSignature(b'LABELONE', offset=1024)
format_specification.AddNewSignature(b'LABELONE', offset=1536)
return format_specification
analyzer.Analyzer.RegisterHelper(LVMAnalyzerHelper())