Function rpgffi::getservbyport_r

pub unsafe extern "C" fn getservbyport_r(
    __port: c_int, 
    __proto: *const c_char, 
    __result_buf: *mut servent, 
    __buf: *mut c_char, 
    __buflen: usize, 
    __result: *mut *mut servent
) -> c_int