linux_io::fd::ioctl

Function ioctl_read

Source 
pub const unsafe fn ioctl_read<Device, Result>(
    request: ulong,
) -> IoctlReqRead<Device, Result>
where
    *mut Result: AsRawV,
    Device: IoDevice,
    Result: Copy,
Expand description

Constructs a new read-only IoctlReq with a fixed request code and a result type that maps directly to the data the kernel will provide.

Safety: Callers must ensure that the given request is valid, that type Arg describes what this request expects to get a pointer to, and that the kernel will populate the given Arg object with data that is consistent with Rust’s expectations for the given type.