From d5b4f5bd722e75a718399dca7235e77c13f7a712 Mon Sep 17 00:00:00 2001
From: Peter Wagner <tripolar@gmx.at>
Date: Mon, 16 Jan 2017 22:28:01 +0100
Subject: [PATCH] ntpd: add hotplug script that signals when ntp reaches the
 stratum level like the sysntp implementation 	use ntpq to check the status
 of the ntp server as all other status scripts included in the ntp tarball are
 	based on perl which would dramatically increase the footprint of ntpd

Signed-off-by: Peter Wagner <tripolar@gmx.at>
---
 net/ntpd/Makefile                  |  6 ++++--
 net/ntpd/files/ntpd.hotplug-helper | 15 +++++++++++++++
 net/ntpd/files/ntpd.init           | 10 +++++++---
 3 files changed, 26 insertions(+), 5 deletions(-)
 create mode 100644 net/ntpd/files/ntpd.hotplug-helper

diff --git a/net/ntpd/Makefile b/net/ntpd/Makefile
index 2e9757554..e16669611 100644
--- a/net/ntpd/Makefile
+++ b/net/ntpd/Makefile
@@ -13,7 +13,7 @@ PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-4.2/
-PKG_MD5SUM:=857452b05f5f2e033786f77ade1974ed
+PKG_HASH:=b724287778e1bac625b447327c9851eedef020517a3545625e9f652a90f30b72
 
 PKG_LICENSE:=Unique
 PKG_LICENSE_FILES:=COPYRIGHT html/copyright.html
@@ -115,6 +115,9 @@ CONFIGURE_ARGS += \
 define Package/ntpd/install
 	$(INSTALL_DIR) $(1)/sbin
 	$(INSTALL_BIN) $(PKG_BUILD_DIR)/ntpd/ntpd $(1)/sbin/
+	$(INSTALL_DIR) $(1)/usr/sbin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/ntpq/ntpq $(1)/usr/sbin/
+	$(INSTALL_BIN) ./files/ntpd.hotplug-helper $(1)/usr/sbin/ntpd.hotplug-helper
 	$(INSTALL_DIR) $(1)/etc
 	$(INSTALL_CONF) ./files/ntp.conf $(1)/etc/
 	$(INSTALL_DIR) $(1)/etc/init.d
@@ -145,7 +148,6 @@ endef
 define Package/ntp-utils/install
 	$(INSTALL_DIR) $(1)/usr/sbin
 	$(INSTALL_BIN) $(PKG_BUILD_DIR)/ntpdc/ntpdc $(1)/usr/sbin/
-	$(INSTALL_BIN) $(PKG_BUILD_DIR)/ntpq/ntpq $(1)/usr/sbin/
 	$(INSTALL_BIN) $(PKG_BUILD_DIR)/util/ntptime $(1)/usr/sbin/
 endef
 
diff --git a/net/ntpd/files/ntpd.hotplug-helper b/net/ntpd/files/ntpd.hotplug-helper
new file mode 100644
index 000000000..39d3df0f7
--- /dev/null
+++ b/net/ntpd/files/ntpd.hotplug-helper
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+HOTPLUG_SCRIPT=/usr/sbin/ntpd-hotplug
+
+while true
+do
+	STATUS="$(ntpq -c 'rv 0 stratum'|awk -F '=' '{ print $2 }')"
+
+	if [ -n "$STATUS" ] && [ "$STATUS" -lt "16" ]
+	then
+		ACTION="stratum" /sbin/hotplug-call ntp
+		exit 0
+	fi
+	sleep 10
+done
diff --git a/net/ntpd/files/ntpd.init b/net/ntpd/files/ntpd.init
index e626e248f..55dd3e84f 100644
--- a/net/ntpd/files/ntpd.init
+++ b/net/ntpd/files/ntpd.init
@@ -5,14 +5,18 @@ START=65
 STOP=65
 
 USE_PROCD=1
+PROG=/sbin/ntpd
+HOTPLUG_HELPER=/usr/sbin/ntpd.hotplug-helper
 
 start_service() {
-#	ln -sf /dev/ttyS0 /dev/gps0
-#	/usr/sbin/setgarmin -d /dev/gps -c /etc/setgarmin.conf
 	mkdir -p /var/lib/ntp
 	chown -R ntp:ntp /var/lib/ntp
 
 	procd_open_instance
-	procd_set_param command /sbin/ntpd -g -u ntp:ntp -p /var/run/ntpd.pid -n
+	procd_set_param command $PROG -g -u ntp:ntp -p /var/run/ntpd.pid -n
+	procd_close_instance
+
+	procd_open_instance
+	procd_set_param command $HOTPLUG_HELPER
 	procd_close_instance
 }