--- /dev/null
+/*
+ * Copyright (C) 2020 Simon Marchi <simon.marchi@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#ifndef LTTNG_DOMAIN_INTERNAL_H
+#define LTTNG_DOMAIN_INTERNAL_H
+
+#include "lttng/domain.h"
+#include "common/macros.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+LTTNG_HIDDEN
+const char *lttng_domain_type_str(enum lttng_domain_type domain_type);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LTTNG_DOMAIN_INTERNAL_H */