Struct disk_initializer::gpt::GPTHeader

#[repr(packed)]pub struct GPTHeader {
    pub signature: u64,
    pub revision: u32,
    pub header_size: u32,
    pub crc32: u32,
    reserved: u32,
    pub current_lba: u64,
    pub backup_lba: u64,
    pub first_usable: u64,
    pub last_usable: u64,
    pub disk_guid: RawUUID,
    pub partition_table_start: u64,
    pub partition_entry_count: u32,
    pub partition_entry_size: u32,
    pub partition_table_crc32: u32,
}

The header of a GPT table.

Fields

signature: u64

Signature of a GPT header.

revision: u32

GPT revision.

header_size: u32

Header size.

crc32: u32

CRC over the header.

reserved: u32

Reserved field.

current_lba: u64

The LBA of this header.

backup_lba: u64

The LBA of the backup header.

first_usable: u64

The first usable LBA. (partition table entries)

last_usable: u64

The last usable LBA.

disk_guid: RawUUID

The GUID of this disk.

partition_table_start: u64

The LBA of the first partition entry.

partition_entry_count: u32

The count of partition entries.

partition_entry_size: u32

The size of a partition entry.

partition_table_crc32: u32

The CRC over all partition entries.

Implementations

impl GPTHeader

pub const MAGIC: u64

The magic of a GPT header ("EFI PART")

pub fn from_storage_device<E: Debug>(
    storage_device: &mut dyn StorageDevice<Error = E>,
    lba_index: u64
) -> Result<Self, E>

Read the GPT header from the disk

pub fn from_bytes(bytes: [u8; 92]) -> Self

Create a GPTHeader from a raw array.

pub fn read(&mut self, bytes: [u8; 92])

Read the content of a raw array into a GPTHeader.

pub fn write(&self, include_crc: bool) -> [u8; 92]

Conver the structure data to a raw array.

pub fn update_header_crc(&mut self)

Update the CRC32 of the header.

Note:

This should be called after having manually update the CRC32 of the partition table.

pub fn set_disk_guid(&mut self, uuid: Uuid)

Set the disk GUID.

Trait Implementations

impl Clone for GPTHeader

fn clone(&self) -> GPTHeader

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for GPTHeader

impl Debug for GPTHeader

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Default for GPTHeader

fn default() -> Self

Returns the "default value" for a type.

impl Eq for GPTHeader

impl PartialEq<GPTHeader> for GPTHeader

fn eq(&self, other: &GPTHeader) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &GPTHeader) -> bool

This method tests for !=.

impl StructuralEq for GPTHeader

impl StructuralPartialEq for GPTHeader