Struct BlockCache

pub struct BlockCache<D> { /* private fields */ }

A caching layer for block devices

Caches a single block.

Implementations

impl<D> BlockCache<D>

where D: BlockDevice,

pub fn new(block_device: D) -> BlockCache<D>

Create a new block cache

pub fn read(&mut self, block_idx: BlockIdx) -> Result<&Block, D::Error>

Read a block, and return a reference to it.

pub fn read_mut(&mut self, block_idx: BlockIdx) -> Result<&mut Block, D::Error>

Read a block, and return a reference to it.

pub fn write_back(&mut self) -> Result<(), D::Error>

Write back a block you read with Self::read_mut and then modified.

pub fn write_back_with_duplicate( &mut self, duplicate: BlockIdx, ) -> Result<(), D::Error>

Write back a block you read with Self::read_mut and then modified, but to two locations.

This is useful for updating two File Allocation Tables.

pub fn blank_mut(&mut self, block_idx: BlockIdx) -> &mut Block

Access a blank sector

pub fn block_device(&mut self) -> &mut D

Access the block device

pub fn free(self) -> D

Get the block device back

Trait Implementations

impl<D: Debug> Debug for BlockCache<D>

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

Formats the value using the given formatter.