pub type kgets_func2 = Option<unsafe extern "C" fn(arg1: *mut c_char, arg2: size_t, arg3: *mut c_void) -> ssize_t>;
pub enum kgets_func2 { None, Some(unsafe extern "C" fn(*mut i8, u64, *mut c_void) -> i64), }
No value.
Some value of type T.
T