Struct Extent 

pub struct Extent { /* private fields */ }

Represents a logical extent and its optional physical device starting offset. Both logical_range boundaries and device_offset must always be a multiple of BLOCK_SIZE (4096 bytes). The physical device range length is identical to logical_range.

Implementations

impl Extent

pub fn logical_range(&self) -> Range<u64>

Returns the logical range of this extent.

pub fn device_offset(&self) -> Option<u64>

Returns the optional physical device offset of this extent. If None, this extent is sparse.

pub fn is_sparse(&self) -> bool

Returns true if this extent is sparse (unbacked by physical storage).

pub fn len(&self) -> u64

Returns the logical length of this extent in bytes.

pub fn new(logical_range: Range<u64>, device_offset: Option<u64>) -> Self

Creates a new Extent.

Panics

Panics if logical_range.start, logical_range.end, or device_offset (when Some) is not a multiple of BLOCK_SIZE (4096 bytes), or if logical_range.start > logical_range.end.

pub fn try_new( logical_range: Range<u64>, device_offset: Option<u64>, ) -> Result<Self, Error>

Creates a new Extent, returning an Error if the alignment is invalid.

Trait Implementations

impl Clone for Extent

fn clone(&self) -> Extent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Extent

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

Formats the value using the given formatter.

impl Eq for Extent

impl PartialEq for Extent

fn eq(&self, other: &Extent) -> 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 Extent