pub unsafe extern "C" fn kmod_set_log_fn(
ctx: *mut kmod_ctx,
log_fn: Option<unsafe extern "C" fn(log_data: *mut c_void, priority: c_int, file: *const c_char, line: c_int, fn_: *const c_char, format: *const c_char, args: va_list)>,
data: *const c_void,
)