1 files changed, 27 insertions, 0 deletions
diff --git a/lib/isc/bind9.c b/lib/isc/bind9.c
new file mode 100644
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--- /dev/null
+++ b/lib/isc/bind9.c
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file */
+
+#include <stdbool.h>
+
+#include <isc/bind9.h>
+
+/*
+ * This determines whether we are using the libisc/libdns libraries
+ * in BIND9 or in some other application. It is initialized to true
+ * and remains unchanged for BIND9 and related tools; export library
+ * clients will run isc_lib_register(), which sets it to false,
+ * overriding certain BIND9 behaviors.
+ */
+LIBISC_EXTERNAL_DATA bool isc_bind9 = true;