Struct Extra 

pub struct Extra(/* private fields */);

Platform-specific extra data associated with a driver instance.

It can be used to set options for or get extra data from I/O operations.

Implementations

impl Extra

pub fn with_personality(self, personality: u16) -> Extra

Set the personality, returning the modified Extra.

This is a no-op when not using io_uring driver.

pub fn set_personality(&mut self, personality: u16)

Set the personality for this operation.

This is a no-op when not using io_uring driver.

pub fn get_personality(&self) -> Option<u16>

Get the personality for this operation.

If the personality was not set with set_personality or the platform does not support it, returns None.

pub fn buffer_id(&self) -> Result<u16, Error>

Try to get the buffer ID associated with this operation.

Behavior

This is only supported on io_uring drivers, in which the driver will try to extract buffer_id returned by the kernel as a part of flags. If the id cannot be extracted from the flag, an InvalidInput io::Error will be returned. On other platforms, this will always return Ok(0).

Trait Implementations

impl Debug for Extra

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

Formats the value using the given formatter.

impl<I> From<I> for Extra

where I: Into<Extra>,

fn from(inner: I) -> Extra

Converts to this type from the input type.