Struct Mapping

pub struct Mapping {
    pub source: MappingSource,
    pub cluster_offset: Option<u64>,
    pub compressed_length: Option<usize>,
    pub copied: bool,
}

Mapping represents the mapping of a cluster to a source of data Mapping and L2Entry can be converted to each other.

Fields

source: MappingSource

Where/how to get the mapped data from

cluster_offset: Option<u64>

Offset in source from which to read the whole cluster data; for compressed clusters, this is generally not aligned to a cluster boundary

compressed_length: Option<usize>

For compressed data: Upper limit on the number of bytes that comprise the compressed data

copied: bool

If this is true, cluster_offset may be written to, and doing so will only change this cluster’s data (note that for zero clusters, writing to a COPIED cluster will not change the visible data: first, the mapping must be changed to be a data cluster)

Implementations

impl Mapping

pub fn plain_offset(&self, in_cluster_offset: usize) -> Option<u64>

pub fn allocated(&self) -> bool

Trait Implementations

impl Clone for Mapping

fn clone(&self) -> Mapping

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Mapping

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

Formats the value using the given formatter.

impl Display for Mapping

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

Formats the value using the given formatter.