1 files changed, 41 insertions, 0 deletions
diff --git a/src/VBox/Installer/darwin/VirtualBox/preflight b/src/VBox/Installer/darwin/VirtualBox/preflight
new file mode 100755
index 00000000..d5262eba
--- /dev/null
+++ b/src/VBox/Installer/darwin/VirtualBox/preflight
@@ -0,0 +1,41 @@
+#!/bin/sh
+
+#
+# Copyright (C) 2007-2022 Oracle and/or its affiliates.
+#
+# This file is part of VirtualBox base platform packages, as
+# available from https://www.virtualbox.org.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation, in version 3 of the
+# License.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <https://www.gnu.org/licenses>.
+#
+# SPDX-License-Identifier: GPL-3.0-only
+#
+
+set -e
+
+# Check environment.
+if [ "x${INSTALLER_TEMP}" = "x" ]; then
+    echo "Required environment variable INSTALLER_TEMP is missing. Aborting installation."
+    exit 1;
+fi
+
+# Backup previously installed Extension Packs before
+# installation process will completely remove previously installed
+# VirtualBox distribution.
+EXTPACKS_ROOT_PATH="/Applications/VirtualBox.app/Contents/MacOS/ExtensionPacks"
+if [ -d "${EXTPACKS_ROOT_PATH}" ]; then
+    cp -r "${EXTPACKS_ROOT_PATH}" "${INSTALLER_TEMP}"
+fi
+
+exit 0;