Struct OwnedRwSlice 

pub struct OwnedRwSlice { /* private fields */ }

Owned, read-WRITE slice over an Arc<dyn BlockDevice>. Use when the parent is writable and the slice should propagate writes (e.g. an individual partition handed to a filesystem driver). Reads + writes outside [0, length) return Error::ShortRead / Error::OutOfBounds.

Implementations

impl OwnedRwSlice

pub fn new(parent: Arc<dyn BlockDevice>, start: u64, length: u64) -> Self

pub fn start(&self) -> u64

pub fn length(&self) -> u64

Trait Implementations

impl BlockDevice for OwnedRwSlice

fn write_at(&self, offset: u64, buf: &[u8]) -> Result<()>

Write exactly buf.len() bytes at offset. Default: returns Error::ReadOnly.

fn flush(&self) -> Result<()>

Flush pending writes to stable storage. No-op by default.

fn is_writable(&self) -> bool

Whether write_at is likely to succeed. Mount paths use this to decide whether to attempt journal replay or stay strict-read-only.

impl BlockRead for OwnedRwSlice

fn read_at(&self, offset: u64, buf: &mut [u8]) -> Result<()>

Read exactly buf.len() bytes starting at offset (bytes from the start of the device).

fn size_bytes(&self) -> u64

Total device size in bytes. Used for bounds checks.