Struct BlockDescriptor 

pub struct BlockDescriptor {
    pub original_offset: u64,
    pub relative_store_offset: u64,
    pub store_offset: u64,
    pub flags: BlockDescriptorFlags,
    pub allocation_bitmap: u32,
}

A 32-byte diff-area block descriptor: it maps an original volume block to the copy-on-write block saved in the store.

Fields

original_offset: u64

Original data block offset (volume-relative).

relative_store_offset: u64

Relative store data block offset (store-relative).

store_offset: u64

Store data block offset (volume-relative).

flags: BlockDescriptorFlags

Flags.

allocation_bitmap: u32

Allocation bitmap (used when the overlay flag is set).

Implementations

impl BlockDescriptor

pub fn parse(buf: &[u8]) -> Self

Parse a 32-byte block descriptor.

Trait Implementations

impl Clone for BlockDescriptor

fn clone(&self) -> BlockDescriptor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BlockDescriptor

impl Debug for BlockDescriptor

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

Formats the value using the given formatter.

impl Eq for BlockDescriptor

impl PartialEq for BlockDescriptor

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for BlockDescriptor