Struct linux_io::fd::ioctl::IoctlReqRead

#[repr(transparent)]
pub struct IoctlReqRead<Device: IoDevice, Result>where
    *mut Result: AsRawV,
    Result: Copy,{ /* private fields */ }

Implementation of IoctlReq with a fixed cmd value and passing a pointer to a zeroed memory block of type Result directly through to the underlying system call and then returnin a copy of that memory.

Trait Implementations

impl<'a, Device, Result> IoctlReq<'a, Device> for IoctlReqRead<Device, Result>where *mut Result: AsRawV, Result: 'a + Copy, Device: 'a + IoDevice,

type ExtArg = ()

The type that the caller will provide when using this ioctl command.

type TempMem = Result

The type of some temporary memory that the request needs to do its work.

type RawArg = *mut Result

The type of argument that will be passed to the raw system call.

type Result = Result

The type of the result of the fcntl call.

fn prepare_ioctl_args( &self, _: &Self::ExtArg, temp_mem: &mut MaybeUninit<Self::TempMem> ) -> (ulong, Self::RawArg)

Prepare the cmd and arg values for a ioctl system call.

fn prepare_ioctl_result( &self, _: int, _: &Self::ExtArg, temp_mem: &MaybeUninit<Self::TempMem> ) -> Self::Result

Prepare a raw successful result from a ioctl call to be returned.