Struct DiskKey 

pub struct DiskKey {
    pub objectid: u64,
    pub key_type: u8,
    pub offset: u64,
}

A btrfs_disk_key — the (objectid, type, offset) tuple every btrfs item is keyed by. Fields are LE on disk; compared as host integers on the tuple (that ordering is P2’s concern; P0 just carries the decoded values).

Fields

objectid: u64

objectid — for a sys chunk item this is FIRST_CHUNK_TREE_OBJECTID (256).

key_type: u8

type — the item-type byte (228 = CHUNK_ITEM for a sys chunk entry).

offset: u64

offset — for a chunk item this is the chunk’s logical start address.

Implementations

impl DiskKey

pub fn parse(data: &[u8], off: usize) -> Self

Decode a btrfs_disk_key at off (bounds-checked; out-of-range fields read as 0).

Trait Implementations

impl Clone for DiskKey

fn clone(&self) -> DiskKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for DiskKey

impl Debug for DiskKey

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

Formats the value using the given formatter.

impl Eq for DiskKey

impl PartialEq for DiskKey

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DiskKey