Struct kernel::user_ptr::UserSlicePtrReader

pub struct UserSlicePtrReader(_, _);

A reader for UserSlicePtr.

Used to incrementally read from the user slice.

Trait Implementations

impl IoBufferReader for UserSlicePtrReader

fn len(&self) -> usize

Returns the number of bytes left to be read from this.

Note that even reading less than this number of bytes may fail.

unsafe fn read_raw(&mut self, out: *mut u8, len: usize) -> Result

Reads raw data from the user slice into a raw kernel buffer.

Safety

The output buffer must be valid.

fn is_empty(&self) -> bool

Returns true if no data is available in the io buffer.

fn read_all(&mut self) -> Result<Vec<u8>>

Reads all data remaining in the io buffer.

fn read_slice(&mut self, data: &mut [u8]) -> Result

Reads a byte slice from the io buffer.

fn read<T: ReadableFromBytes>(&mut self) -> Result<T>

Reads the contents of a plain old data (POD) type from the io buffer.