Struct NoArg

pub struct NoArg<const OPCODE: Opcode> {}

Implements an ioctl with no real arguments.

To compute a value for the OPCODE argument, see the functions in the opcode module.

Implementations

impl<const OPCODE: Opcode> NoArg<OPCODE>

pub const unsafe fn new() -> Self

Create a new no-argument ioctl object.

Safety

• OPCODE must provide a valid opcode.

Trait Implementations

impl<const OPCODE: Opcode> Debug for NoArg<OPCODE>

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

Formats the value using the given formatter.

impl<const OPCODE: Opcode> Ioctl for NoArg<OPCODE>

const IS_MUTATING: bool = false

Does the ioctl mutate any data in the userspace?

type Output = ()

The type of the output data.

fn opcode(&self) -> Opcode

Get the opcode used by this ioctl command.

fn as_ptr(&mut self) -> *mut c_void

Get a pointer to the data to be passed to the ioctl command.

unsafe fn output_from_ptr( _: IoctlOutput, _: *mut c_void, ) -> Result<Self::Output>

Cast the output data to the correct type.