diff --git a/deviceset.go b/deviceset.go
new file mode 100644
index 0000000000..01bdba411f
--- /dev/null
+++ b/deviceset.go
@@ -0,0 +1,11 @@
+package docker
+
+type DeviceSet interface {
+	AddDevice(hash, baseHash string) error
+	SetInitialized(hash string) error
+	DeactivateDevice(hash string) error
+	RemoveDevice(hash string) error
+	MountDevice(hash, path string) error
+	HasDevice(hash string) bool
+	HasInitializedDevice(hash string) bool
+}