kubernetes/pkg/volume/util/volumepathhandler/volume_path_handler_unsupported.go

// AttachFileDevice takes a path to a regular file and makes it available as an
// attached block device.
func (v VolumePathHandler) AttachFileDevice(path string) (string, error) { … }

// DetachFileDevice takes a path to the attached block device and
// detach it from block device.
func (v VolumePathHandler) DetachFileDevice(path string) error { … }

// GetLoopDevice returns the full path to the loop device associated with the given path.
func (v VolumePathHandler) GetLoopDevice(path string) (string, error) { … }

// FindGlobalMapPathUUIDFromPod finds {pod uuid} bind mount under globalMapPath
// corresponding to map path symlink, and then return global map path with pod uuid.
func (v VolumePathHandler) FindGlobalMapPathUUIDFromPod(pluginDir, mapPath string, podUID types.UID) (string, error) { … }