linux_io::fd::ioctl

Function ioctl_write

Source 
pub const unsafe fn ioctl_write<Device, Arg, Result>(
    request: ulong,
) -> IoctlReqWrite<Device, Arg, Result>
where
    *const Arg: AsRawV,
    Device: IoDevice,
    Result: FromIoctlResult<int>,
Expand description

Constructs a new write-only IoctlReq with a fixed request code and an argument type that maps directly to the data the kernel expects to receive a pointer to.

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 it isn’t possible for any value of that type to cause the kernel to violate memory safety. In particular, the kernel must not modify the given memory, because the safe caller will provide a shared reference.