Init returns the NaiveDiffDriver, a native diff driver for overlay filesystem.

NaiveDiffDriverWithApply returns a NaiveDiff driver with custom ApplyDiff.

ErrApplyDiffFallback is returned to indicate that a normal ApplyDiff is applied as a fallback from Naive diff writer.

Driver contains information about the home directory and the list of active mounts that are created using this driver.

ApplyDiffProtoDriver wraps the ProtoDriver by extending the interface with ApplyDiff method.