pub type FAST_IO_DEVICE_CONTROL = Option<unsafe extern "system" fn(fileobject: *const FILE_OBJECT, wait: BOOLEAN, inputbuffer: *const c_void, inputbufferlength: u32, outputbuffer: *mut c_void, outputbufferlength: u32, iocontrolcode: u32, iostatus: *mut IO_STATUS_BLOCK, deviceobject: *const DEVICE_OBJECT) -> BOOLEAN>;
enum FAST_IO_DEVICE_CONTROL {
None,
Some(unsafe extern "system" fn(_: *const FILE_OBJECT, _: BOOLEAN, _: *const c_void, _: u32, _: *mut c_void, _: u32, _: u32, _: *mut IO_STATUS_BLOCK, _: *const DEVICE_OBJECT) -> BOOLEAN),
}