Struct fuse::worker::DevFuseWriter

struct DevFuseWriter {
    dev_fuse: File,
    write_buf: Cursor<Vec<u8>>,
}

Fields

dev_fuse: File

write_buf: Cursor<Vec<u8>>

Implementations

impl DevFuseWriter

pub fn new(dev_fuse: File, write_buf: Cursor<Vec<u8>>) -> Self

Trait Implementations

impl Write for DevFuseWriter

fn write(&mut self, buf: &[u8]) -> Result<usize>

Write a buffer into this writer, returning how many bytes were written.

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

Flush this output stream, ensuring that all intermediately buffered contents reach their destination.

fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize, Error>

Like write, except that it writes from a slice of buffers.

fn is_write_vectored(&self) -> bool

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

Determines if this Writer has an efficient write_vectored implementation.

fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>

Attempts to write an entire buffer into this writer.

fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>

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

Attempts to write multiple buffers into this writer.

fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

Creates a “by reference” adapter for this instance of Write.

impl Writer for DevFuseWriter

type ClosureWriter = DevFuseWriter

The type passed in to the closure in write_at. For most implementations, this should be Self.

fn write_at<F>(&mut self, offset: usize, f: F) -> Result<usize>

where F: Fn(&mut Self) -> Result<usize>,

Allows a closure to generate and write data at the current writer’s offset. The current writer is passed as a mutable reference to the closure. As an example, this provides an adapter for the read implementation of a filesystem to write directly to the final buffer without generating the FUSE header first.

fn has_sufficient_buffer(&self, size: u32) -> bool

Checks if the writer can still accept certain amount of data.

impl ZeroCopyWriter for DevFuseWriter

fn write_from(&mut self, f: &mut File, count: usize, off: u64) -> Result<usize>

Copies at most count bytes from f at offset off directly into self without storing it in any intermediate buffers. If the return value is Ok(n) then it must be guaranteed that 0 <= n <= count. If n is 0, then it can indicate one of 3 possibilities:

fn write_all_from(&mut self, f: &mut File, count: usize, off: u64) -> Result<()>

Copies exactly count bytes of data from f at offset off into self. off + count must be less than u64::MAX.

fn copy_to_end(&mut self, f: &mut File, off: u64) -> Result<usize>

Copies all remaining bytes from f at offset off into self. Equivalent to repeatedly calling write_from until it returns either Ok(0) or a non-ErrorKind::Interrupted error.