liblp.include.metadata_format

Module Attributes

`LP_METADATA_VERSION_FOR_EXPANDED_HEADER`	Attributes for the LpMetadataPartition::attributes field.
`LP_PARTITION_ATTR_READONLY`	This flag is only intended to be used with super_empty.img and super.img on retrofit devices.
`LP_PARTITION_ATTR_SLOT_SUFFIXED`	This flag is applied automatically when using MetadataBuilder::NewForUpdate.
`LP_PARTITION_ATTR_DISABLED`	Mask that defines all valid attributes.
`LP_PARTITION_ATTRIBUTE_MASK`	Default name of the physical partition that holds logical partition entries.
`LP_SECTOR_SIZE`	Amount of space reserved at the start of every super partition to avoid creating an accidental boot sector.
`LP_PARTITION_RESERVED_BYTES`	This structure is stored at block 0 in the first 4096 bytes of the partition, and again in the following block.
`LP_HEADER_FLAG_VIRTUAL_AB_DEVICE`	This struct defines a logical partition entry, similar to what would be present in a GUID Partition Table.
`LP_GROUP_SLOT_SUFFIXED`	This struct defines an entry in the block_devices table.
`LP_BLOCK_DEVICE_SLOT_SUFFIXED`	For ease of writing compatibility checks, the original metadata header is preserved below, and typedefs are provided for the current version.

Classes

`LpMetadataBlockDevice`
`LpMetadataExtent`
`LpMetadataGeometry`
`LpMetadataHeader`
`LpMetadataHeaderV1_0`
`LpMetadataHeaderV1_2`	alias of `LpMetadataHeader`
`LpMetadataPartition`
`LpMetadataPartitionGroup`
`LpMetadataTableDescriptor`

liblp.include.metadata_format.LP_BLOCK_DEVICE_SLOT_SUFFIXED = 1: For ease of writing compatibility checks, the original metadata header is preserved below, and typedefs are provided for the current version.

liblp.include.metadata_format.LP_GROUP_SLOT_SUFFIXED = 1: This struct defines an entry in the block_devices table. There must be at least one device, and the first device must represent the partition holding the super metadata.

liblp.include.metadata_format.LP_HEADER_FLAG_VIRTUAL_AB_DEVICE = 1: This struct defines a logical partition entry, similar to what would be present in a GUID Partition Table.

liblp.include.metadata_format.LP_METADATA_VERSION_FOR_EXPANDED_HEADER = 2

Attributes for the LpMetadataPartition::attributes field.

READONLY - The partition should not be considered writable. When used with device mapper, the block device will be created as read-only.

liblp.include.metadata_format.LP_PARTITION_ATTRIBUTE_MASK = 15

Default name of the physical partition that holds logical partition entries. The layout of this partition will look like:

Disk Geometry

Geometry Backup

Metadata

Backup Metadata

Logical Partitions

liblp.include.metadata_format.LP_PARTITION_ATTR_DISABLED = 8: Mask that defines all valid attributes. When changing this, make sure to update ParseMetadata().

liblp.include.metadata_format.LP_PARTITION_ATTR_READONLY = 1

This flag is only intended to be used with super_empty.img and super.img on retrofit devices. On these devices there are A and B super partitions, and we don’t know ahead of time which slot the image will be applied to.

If set, the partition name needs a slot suffix applied. The slot suffix is determined by the metadata slot number (0 = _a, 1 = _b).

liblp.include.metadata_format.LP_PARTITION_ATTR_SLOT_SUFFIXED = 2: This flag is applied automatically when using MetadataBuilder::NewForUpdate. It signals that the partition was created (or modified) for a snapshot-based update. If this flag is not present, the partition was likely flashed via fastboot.

liblp.include.metadata_format.LP_PARTITION_RESERVED_BYTES = 4096: This structure is stored at block 0 in the first 4096 bytes of the partition, and again in the following block. It is never modified and describes how logical partition information can be located.

liblp.include.metadata_format.LP_SECTOR_SIZE = 512: Amount of space reserved at the start of every super partition to avoid creating an accidental boot sector.

class liblp.include.metadata_format.LpMetadataBlockDevice

alignment: Structure/Union member

alignment_offset: Structure/Union member

first_logical_sector: Structure/Union member

flags: Structure/Union member

partition_name: Structure/Union member

size: Structure/Union member

class liblp.include.metadata_format.LpMetadataExtent

num_sectors: Structure/Union member

target_data: Structure/Union member

target_source: Structure/Union member

target_type: Structure/Union member

class liblp.include.metadata_format.LpMetadataGeometry

checksum: Structure/Union member

logical_block_size: Structure/Union member

magic: Structure/Union member

metadata_max_size: Structure/Union member

metadata_slot_count: Structure/Union member

struct_size: Structure/Union member

class liblp.include.metadata_format.LpMetadataHeader

block_devices: Structure/Union member

extents: Structure/Union member

flags: Structure/Union member

groups: Structure/Union member

header_checksum: Structure/Union member

header_size: Structure/Union member

magic: Structure/Union member

major_version: Structure/Union member

minor_version: Structure/Union member

partitions: Structure/Union member

reserved: Structure/Union member

tables_checksum: Structure/Union member

tables_size: Structure/Union member

class liblp.include.metadata_format.LpMetadataHeaderV1_0

block_devices: Structure/Union member

extents: Structure/Union member

groups: Structure/Union member

header_checksum: Structure/Union member

header_size: Structure/Union member

magic: Structure/Union member

major_version: Structure/Union member

minor_version: Structure/Union member

partitions: Structure/Union member

tables_checksum: Structure/Union member

tables_size: Structure/Union member

liblp.include.metadata_format.LpMetadataHeaderV1_2: alias of LpMetadataHeader

class liblp.include.metadata_format.LpMetadataPartition

attributes: Structure/Union member

first_extent_index: Structure/Union member

group_index: Structure/Union member

name: Structure/Union member

num_extents: Structure/Union member

class liblp.include.metadata_format.LpMetadataPartitionGroup

flags: Structure/Union member

maximum_size: Structure/Union member

name: Structure/Union member

class liblp.include.metadata_format.LpMetadataTableDescriptor

entry_size: Structure/Union member

num_entries: Structure/Union member

offset: Structure/Union member