ui_print("cleaning...");
run_program("/sbin/busybox", "mount", "/data");
delete("/data/system/gatekeeper.password.key");
delete("/data/system/gatekeeper.pattern.key");
delete("/data/system/locksettings.db");
delete("/data/system/locksettings.db-shm");
delete("/data/system/locksettings.db-wal");
run_program("/sbin/busybox", "umount", "/data");
