Log(msg string)

	// SecurityError prints the given security error log message.
	// The Client returns ErrSecurity from any operation that invokes SecurityError,
	// but the return value is mainly for testing. In a real program,
	// SecurityError should typically print the message and call log.Fatal or os.Exit.
	SecurityError(msg string)
}

	os.MkdirAll(filepath.Dir(targ), 0777)
	lockedfile.Write(targ, bytes.NewReader(data), 0666)
}

func (*dbClient) Log(msg string) {
	// nothing for now
}

func (*dbClient) SecurityError(msg string) {
	base.Fatalf("%s", msg)