The unlabeled file system context configuration is contained in the fs_contexts file. This configuration specifies the security contexts to apply to an unlabeled file system when it is first mounted. If no entry is specified for the device, then the security contexts associated with the fs and file initial SIDs are used.
Currently, this configuration is unused. A single entry is specified as an example. The types are the same as for the fs and file initial SIDs. The system_u user identity and object_r role are used since these contexts represent system objects.