expectedNumFieldsPerLine = 6
	// Location of the mount file to use
	procMountsPath = "/proc/mounts"
)

// IsLikelyMountPoint determines if a directory is a mountpoint.
func IsLikelyMountPoint(path string) bool {
	s1, err := os.Lstat(path)
	if err != nil {
		return false
	}

	// A symlink can never be a mount point
	if s1.Mode()&os.ModeSymlink != 0 {
		return false
	}

// this is a dummy function and returns nil for now.
func CheckCrossDevice(paths []string) error {
	return nil
}

// IsLikelyMountPoint determines if a directory is a mountpoint.
func IsLikelyMountPoint(file string) bool {
	return false

func CheckCrossDevice(paths []string) error {
	return nil
}

// mountPointCache contains results of IsLikelyMountPoint
var mountPointCache sync.Map

// IsLikelyMountPoint determines if a directory is a mountpoint.
func IsLikelyMountPoint(path string) bool {
	path = filepath.Dir(path)
	if v, ok := mountPointCache.Load(path); ok {
		if b, ok := v.(bool); ok {
			return b
		}
	}
	wpath, _ := windows.UTF16PtrFromString(path)

var errDiskFull = StorageErr("drive path full")

// errDiskNotDir - cannot use storage disk if its not a directory
var errDiskNotDir = StorageErr("drive is not directory or mountpoint")

// errDiskNotFound - cannot find the underlying configured disk anymore.
var errDiskNotFound = StorageErr("drive not found")

// errDiskOngoingReq - indicates if the disk has an on-going request in progress.

			t.Fatalf("expected 3 mounts, got %d", len(mounts))
		}
		mp := mountInfo{"/dev/0", "/path/to/0", "type0", []string{"flags"}, "0", "0"}
		if !mountPointsEqual(mounts[0], mp) {
			t.Errorf("got unexpected MountPoint[0]: %#v", mounts[0])
		}
		mp = mountInfo{"/dev/1", "/path/to/1", "type1", []string{"flags"}, "1", "1"}
		if !mountPointsEqual(mounts[1], mp) {
			t.Errorf("got unexpected mountInfo[1]: %#v", mounts[1])
		}

## Non-user-facing Changes

* CRI now uses moutpoint as image filesystem identifier instead of UUID. ([#59475](https://github.com/kubernetes/kubernetes/pull/59475), [@Random-Liu](https://github.com/Random-Liu))

- NOTE ([#113749](https://github.com/kubernetes/kubernetes/pull/113749), [@jpbetz](https://github.com/jpbetz)) [SIG API Machinery]
- Nested `MountPoints` are now grouped correctly on all cases. ([#112571](https://github.com/kubernetes/kubernetes/pull/112571), [@claudiubelu](https://github.com/claudiubelu))