# A helper function that bind mounts kubelet dirs for running mount in a chroot
function prepare-mounter-rootfs {
  echo "Prepare containerized mounter"
  mount --bind "${CONTAINERIZED_MOUNTER_HOME}" "${CONTAINERIZED_MOUNTER_HOME}"
  mount -o remount,exec "${CONTAINERIZED_MOUNTER_HOME}"
  CONTAINERIZED_MOUNTER_ROOTFS="${CONTAINERIZED_MOUNTER_HOME}/rootfs"
  mount --rbind /var/lib/kubelet/ "${CONTAINERIZED_MOUNTER_ROOTFS}/var/lib/kubelet"

		return fmt.Errorf("error creating root directory: %v", err)
	}
	if err := os.MkdirAll(kl.getPodLogsDir(), 0750); err != nil {
		return fmt.Errorf("error creating pod logs root directory %q: %w", kl.getPodLogsDir(), err)
	}
	if err := kl.hostutil.MakeRShared(kl.getRootDir()); err != nil {
		return fmt.Errorf("error configuring root directory: %v", err)
	}

func (b *Builder) Do(ctx context.Context, root *Action) {
	ctx, span := trace.StartSpan(ctx, "exec.Builder.Do ("+root.Mode+" "+root.Target+")")
	defer span.Done()

	if !b.IsCmdList {
		// If we're doing real work, take time at the end to trim the cache.
		c := cache.Default()
		defer func() {
			if err := c.Close(); err != nil {
				base.Fatalf("go: failed to trim cache: %v", err)
			}
		}()
	}