ntp: add hotplug class for ntp-events

Based on a patch by Luiz Angelo Daros de Luca

Signed-off-by: Steven Barth <steven@midlink.org>

SVN-Revision: 43421

package/utils/busybox/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=busybox
 PKG_VERSION:=1.22.1
-PKG_RELEASE:=4
+PKG_RELEASE:=5
 PKG_FLAGS:=essential
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
@@ -116,6 +116,7 @@ define Package/busybox/install
 	$(INSTALL_BIN) ./files/cron $(1)/etc/init.d/cron
 	$(INSTALL_BIN) ./files/telnet $(1)/etc/init.d/telnet
 	$(INSTALL_BIN) ./files/sysntpd $(1)/etc/init.d/sysntpd
+	$(INSTALL_BIN) ./files/ntpd-hotplug $(1)/usr/sbin/ntpd-hotplug
 	-rm -rf $(1)/lib64
 endef
 

package/utils/busybox/files/ntpd-hotplug

@@ -0,0 +1,3 @@
+#!/bin/sh
+[ "$1" = stratum ] || exit 0
+ACTION="$1" /sbin/hotplug-call ntp

package/utils/busybox/files/sysntpd

@@ -5,6 +5,7 @@ START=98
 
 USE_PROCD=1
 PROG=/usr/sbin/ntpd
+HOTPLUG_SCRIPT=/usr/sbin/ntpd-hotplug
 
 validate_ntp_section() {
 	uci_validate_section system timeserver "${1}" \
@@ -26,6 +27,7 @@ start_service() {
 	procd_open_instance
 	procd_set_param command "$PROG" -n
 	[ "$enable_server" = "1" ] && procd_append_param command -l
+	[ -x "$HOTPLUG_SCRIPT" ] && procd_append_param command -S "$HOTPLUG_SCRIPT"
 	for peer in $server; do
 		procd_append_param command -p $peer
 	done