"curl --fail --silent -H 'Metadata-Flavor: Google' \
      'http://metadata/computeMetadata/v1/instance/attributes/kube-env'" 2>/dev/null
  gcloud compute --project "${PROJECT}" ssh --zone "${ZONE}" "${KUBE_MASTER}" --command \
    "curl --fail --silent -H 'Metadata-Flavor: Google' \
      'http://metadata/computeMetadata/v1/instance/attributes/kube-master-certs'" 2>/dev/null
}

// past the end of dodata().
type dodataState struct {
	// Link context
	ctxt *Link
	// Data symbols bucketed by type.
	data [sym.SXREF][]loader.Sym
	// Max alignment for each flavor of data symbol.
	dataMaxAlign [sym.SXREF]int32
	// Overridden sym type
	symGroupType []sym.SymKind
	// Current data size so far.
	datsize int64
}

// A note on symType/setSymType below:
//

# duplicated there as well.
function get-metadata-value {
  local default="${2:-}"

  local status
  # shellcheck disable=SC2086
  curl ${CURL_FLAGS} \
    -H 'Metadata-Flavor: Google' \
    "http://metadata/computeMetadata/v1/${1}" \
  || status="$?"
  status="${status:-0}"

  if [[ "${status}" -eq 0 || -z "${default}" ]]; then
    return "${status}"
  else