Struct L1Entry

pub(super) struct L1Entry(u64);

L1 table entry.

• Bit 0 - 8: Reserved (set to 0)
• Bit 9 – 55: Bits 9-55 of the offset into the image file at which the L2 table starts. Must be aligned to a cluster boundary. If the offset is 0, the L2 table and all clusters described by this L2 table are unallocated.
• Bit 56 - 62: Reserved (set to 0)
• Bit 63: 0 for an L2 table that is unused or requires COW, 1 if its refcount is exactly one. This information is only accurate in the active L1 table.

Tuple Fields

0: u64

Implementations

impl L1Entry

pub fn l2_offset(&self) -> Option<HostOffset>

Offset of the L2 table, if any.

pub fn is_copied(&self) -> bool

Whether the L2 table’s cluster is “copied”.

true means is refcount is one, false means modifying it will require COW.

pub fn reserved_bits(&self) -> u64

Return all reserved bits.

Trait Implementations

impl Clone for L1Entry

fn clone(&self) -> L1Entry

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for L1Entry

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

Formats the value using the given formatter.

impl Default for L1Entry

fn default() -> L1Entry

Returns the “default value” for a type.

impl TableEntry for L1Entry

fn try_from_plain(value: u64, header: &Header) -> Result<Self>

Load the given raw value, checking it for validity.

fn to_plain(&self) -> u64

Return the contained raw value.

impl Copy for L1Entry