--- /dev/null
+#ifndef LOC_DATA_H_
+#define LOC_DATA_H_
+#include <location/location-gps-device.h>
+#include <location/location-gpsd-control.h>
+
+void on_error(LocationGPSDControl *control, LocationGPSDControlError error, gpointer data);
+
+void on_changed(LocationGPSDevice *device, gpointer data);
+
+void on_stop(LocationGPSDControl *control, gpointer data);
+
+gboolean start_location(gpointer data);
+
+#endif /*LOC_DATA_H_*/