message: Check for required rage-mount arguments
diff: @@ -93,6 +93,15 @@ fn main() {
  let opts = AgeMountOptions::parse_args_default_or_exit();
  + if opts.filename.is_empty() {
  + error!("Missing filename");
  + return;
  + }
  + if opts.mountpoint.is_empty() {
  + error!("Missing mountpoint");
  + return;
  + }
  +
  let decryptor = if opts.passphrase {
  if !opts.keys.is_empty() {
  error!("Keys are not accepted when using a passphrase");
  