fingerprintd.te: neverallow fingerprint data file access

am: 604a8cae

* commit '604a8cae':
  fingerprintd.te: neverallow fingerprint data file access

fingerprintd.te

@@ -21,3 +21,12 @@ allow fingerprintd keystore:keystore_key { add_auth };
 # For permissions checking
 binder_call(fingerprintd, system_server);
 allow fingerprintd permission_service:service_manager find;
+
+###
+### Neverallow rules
+###
+
+# Protect fingerprint data files from access by anything other
+# than fingerprintd and init
+neverallow { domain -fingerprintd -init } fingerprintd_data_file:file
+  { append create link relabelfrom rename setattr write open read ioctl lock };