// unsupported platforms
func NewHostUtil() *HostUtil {
	return &HostUtil{}
}

var errUnsupported = errors.New("volume/util/hostutil on this platform is not supported")

// DeviceOpened always returns an error on unsupported platforms
func (hu *HostUtil) DeviceOpened(pathname string) (bool, error) {
	return false, errUnsupported
}

// PathIsDevice always returns an error on unsupported platforms

	}
}

// Compile-time check to make sure FakeHostUtil implements interface
var _ HostUtils = &FakeHostUtil{}

// DeviceOpened checks if block device referenced by pathname is in use by
// checking if is listed as a device in the in-memory mountpoint table.
func (hu *FakeHostUtil) DeviceOpened(pathname string) (bool, error) {
	hu.mutex.Lock()
	defer hu.mutex.Unlock()

	for _, mp := range hu.MountPoints {

)

// HostUtils defines the set of methods for interacting with paths on a host.
type HostUtils interface {
	// DeviceOpened determines if the device (e.g. /dev/sdc) is in use elsewhere
	// on the system, i.e. still mounted.
	DeviceOpened(pathname string) (bool, error)
	// PathIsDevice determines if a path is a device.
	PathIsDevice(pathname string) (bool, error)

				return "", err
			}
			return volumeID, nil
		}
	}

	return filepath.Base(mountPath), nil
}

// DeviceOpened determines if the device is in use elsewhere
func (hu *HostUtil) DeviceOpened(pathname string) (bool, error) {
	return false, nil
}

// PathIsDevice determines if a path is a device.
func (hu *HostUtil) PathIsDevice(pathname string) (bool, error) {

func NewHostUtil() *HostUtil {
	return &HostUtil{}
}

// DeviceOpened checks if block device in use by calling Open with O_EXCL flag.
// If pathname is not a device, log and return false with nil error.
// If open returns errno EBUSY, return true with nil error.
// If open returns nil, return false with nil error.
// Otherwise, return false with error
func (hu *HostUtil) DeviceOpened(pathname string) (bool, error) {

		deviceOpened = false
	} else if devicePathErr != nil {
		return false, deviceToDetach.GenerateErrorDetailed("PathIsDevice failed", devicePathErr)
	} else {
		deviceOpened, deviceOpenedErr = hostUtil.DeviceOpened(deviceToDetach.DevicePath)
		if deviceOpenedErr != nil {
			return false, deviceToDetach.GenerateErrorDetailed("DeviceOpened failed", deviceOpenedErr)
		}
	}