Trait kernel::hwrng::Operations

pub trait Operations {
    type Data: ForeignOwnable + Send + Sync = ();

    const USE_VTABLE_ATTR: ();
    const HAS_INIT: bool = false;
    const HAS_CLEANUP: bool = false;
    const HAS_READ: bool = false;

    fn read(
        data: <Self::Data as ForeignOwnable>::Borrowed<'_>,
        buffer: &mut [u8],
        wait: bool
    ) -> Result<u32>;

    fn init(_data: <Self::Data as ForeignOwnable>::Borrowed<'_>) -> Result { ... }
    fn cleanup(_data: Self::Data) { ... }
}

This trait is implemented in order to provide callbacks to struct hwrng.

Provided Associated Types

type Data: ForeignOwnable + Send + Sync = ()

The pointer type that will be used to hold user-defined data type.

Required Associated Constants

const USE_VTABLE_ATTR: ()

A marker to prevent implementors from forgetting to use #[vtable] attribute when implementing this trait.

Provided Associated Constants

const HAS_INIT: bool = false

Indicates if the init method is overridden by the implementor.

const HAS_CLEANUP: bool = false

Indicates if the cleanup method is overridden by the implementor.

const HAS_READ: bool = false

Indicates if the read method is overridden by the implementor.

Required Methods

fn read(
    data: <Self::Data as ForeignOwnable>::Borrowed<'_>,
    buffer: &mut [u8],
    wait: bool
) -> Result<u32>

Read data into the provided buffer. Drivers can fill up to max bytes of data into the buffer. The buffer is aligned for any type and its size is a multiple of 4 and >= 32 bytes.

Provided Methods

fn init(_data: <Self::Data as ForeignOwnable>::Borrowed<'_>) -> Result

Initialization callback, can be left undefined.

fn cleanup(_data: Self::Data)

Cleanup callback, can be left undefined.

Implementors