feat(ns-plug): add restart script for ns-plug service

Author: stephdl

packages/ns-plug/Makefile

@@ -73,6 +73,7 @@ define Package/ns-plug/install
 	$(INSTALL_DIR) $(1)/usr/libexec/mwan-hooks
 	$(INSTALL_BIN) ./files/ns-plug.init $(1)/etc/init.d/ns-plug
 	$(INSTALL_BIN) ./files/ns-plug $(1)/usr/sbin/ns-plug
+	$(INSTALL_BIN) ./files/restart-ns-plug $(1)/usr/sbin/restart-ns-plug
 	$(INSTALL_BIN) ./files/distfeed-setup $(1)/usr/sbin/distfeed-setup
 	$(INSTALL_BIN) ./files/remote-backup $(1)/usr/sbin
 	$(INSTALL_BIN) ./files/send-backup $(1)/usr/sbin

packages/ns-plug/files/restart-ns-plug

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+#
+# Copyright (C) 2024 Nethesis S.r.l.
+# SPDX-License-Identifier: GPL-2.0-only
+#
+
+# Restart the ns-plug service when tun-nsplug goes down
+
+# the service can take a while to stop
+if /etc/init.d/ns-plug status ; then
+    sleep 30
+fi
+
+# Check if the service is NOT running
+if ! /etc/init.d/ns-plug status ; then
+    exit 0
+fi
+
+# Restart the service
+/etc/init.d/ns-plug restart