Struct LogicalBlockAddress 

#[repr(transparent)]
pub struct LogicalBlockAddress(NonZeroU64);

Represents a logical block address (LBA) on disk.

This structure stores the block index used to locate data blocks on a physical storage device. The actual size of a block depends on the filesystem’s configuration.

Tuple Fields

0: NonZeroU64

Implementations

impl LogicalBlockAddress

pub const fn new(n: u64) -> Option<Self>

Creates a LogicalBlockAddress if the given value is not zero.

pub const fn into_sector(self) -> Sector

Converts a logical block address (LBA) to a sector number.

In the Fast File System (FFS), logical blocks are 4 KiB (0x1000) in size, while sectors are 512 bytes. Since LBA numbering starts at 1 (with 0 being invalid), this function calculates the corresponding sector.

Returns

• A Sector corresponding to the given logical block.

pub fn into_bitmap_lba_offset( self, ffs: &FastFileSystemInner, ) -> Option<(LogicalBlockAddress, usize)>

Converts this logical block address into the corresponding location in the block allocation bitmap.

Arguments

• fs: Reference to the file system’s internal metadata layout.

Returns

• Some((lba, index)): if the block address is valid, which includes:
  • lba: the logical block address of the bitmap block that tracks this data block.
  • index: the index within the bitmap block where the relevant bit resides.
• None: if the logical block address is out of bounds or outside the data region.

pub fn into_u64(&self) -> u64

Returns the contained value as a u64.

Trait Implementations

impl Add<usize> for LogicalBlockAddress

type Output = LogicalBlockAddress

The resulting type after applying the + operator.

fn add(self, rhs: usize) -> Self

Performs the + operation.

impl Clone for LogicalBlockAddress

fn clone(&self) -> LogicalBlockAddress

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LogicalBlockAddress

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

Formats the value using the given formatter.

impl Ord for LogicalBlockAddress

fn cmp(&self, other: &LogicalBlockAddress) -> Ordering

This method returns an [Ordering] between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for LogicalBlockAddress

fn eq(&self, other: &LogicalBlockAddress) -> 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 PartialOrd for LogicalBlockAddress

fn partial_cmp(&self, other: &LogicalBlockAddress) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Step for LogicalBlockAddress

fn steps_between(start: &Self, end: &Self) -> (usize, Option<usize>)

🔬This is a nightly-only experimental API. (step_trait)

Returns the bounds on the number of successor steps required to get from start to end like [Iterator::size_hint()][Iterator::size_hint()].

fn forward_checked(start: Self, count: usize) -> Option<Self>

🔬This is a nightly-only experimental API. (step_trait)

Returns the value that would be obtained by taking the successor of self count times.

fn backward_checked(start: Self, count: usize) -> Option<Self>

🔬This is a nightly-only experimental API. (step_trait)

Returns the value that would be obtained by taking the predecessor of self count times.

fn forward(start: Self, count: usize) -> Self

🔬This is a nightly-only experimental API. (step_trait)

Returns the value that would be obtained by taking the successor of self count times.

unsafe fn forward_unchecked(start: Self, count: usize) -> Self

🔬This is a nightly-only experimental API. (step_trait)

Returns the value that would be obtained by taking the successor of self count times.

fn backward(start: Self, count: usize) -> Self

🔬This is a nightly-only experimental API. (step_trait)

Returns the value that would be obtained by taking the predecessor of self count times.

unsafe fn backward_unchecked(start: Self, count: usize) -> Self

🔬This is a nightly-only experimental API. (step_trait)

Returns the value that would be obtained by taking the predecessor of self count times.

impl Copy for LogicalBlockAddress

impl Eq for LogicalBlockAddress

impl StructuralPartialEq for LogicalBlockAddress