[Buildroot] [PATCH] busybox: add option to install ntp startup script

[Floris Bos]

Signed-off-by: Floris Bos <bos at je-eigen-domein.nl>
---
 package/busybox/Config.in  |  6 ++++++
 package/busybox/S49ntp     | 34 ++++++++++++++++++++++++++++++++++
 package/busybox/busybox.mk | 15 +++++++++++++++
 package/busybox/ntp.conf   |  2 ++
 4 files changed, 57 insertions(+)
 create mode 100644 package/busybox/S49ntp
 create mode 100644 package/busybox/ntp.conf

diff --git a/package/busybox/Config.in b/package/busybox/Config.in
index b4f949f..0b74536 100644
--- a/package/busybox/Config.in
+++ b/package/busybox/Config.in
@@ -26,6 +26,12 @@ config BR2_PACKAGE_BUSYBOX_SHOW_OTHERS
 	  Show packages in menuconfig that are potentially also provided
 	  by busybox.
 
+config BR2_PACKAGE_BUSYBOX_NTP
+	bool "Install the ntp startup script"
+	help
+	  Install the ntp daemon startup script, that by default operates in
+	  client-only mode and synchronizes the system time with pool.ntp.org.
+
 config BR2_PACKAGE_BUSYBOX_WATCHDOG
 	bool "Install the watchdog daemon startup script"
 	help
diff --git a/package/busybox/S49ntp b/package/busybox/S49ntp
new file mode 100644
index 0000000..357c95d
--- /dev/null
+++ b/package/busybox/S49ntp
@@ -0,0 +1,34 @@
+#!/bin/sh
+#
+# Start ntp daemon (in client mode)
+#
+
+start() {
+	echo -n "Starting ntpd: "
+	start-stop-daemon -S -b -q -m -p /var/run/ntpd.pid --exec /usr/sbin/ntpd -- -n
+	echo "OK"
+}
+
+stop() {
+	echo -n "Stopping ntpd: "
+	start-stop-daemon -K -q -p /var/run/ntpd.pid
+	echo "OK"
+}
+
+case "$1" in
+  start)
+	start
+	;;
+  stop)
+	stop
+	;;
+  restart|reload)
+	stop
+	start
+	;;
+  *)
+	echo "Usage: $0 {start|stop|restart}"
+	exit 1
+esac
+
+exit $?
diff --git a/package/busybox/busybox.mk b/package/busybox/busybox.mk
index 1ce508a..32b6db8 100644
--- a/package/busybox/busybox.mk
+++ b/package/busybox/busybox.mk
@@ -151,6 +151,19 @@ define BUSYBOX_INSTALL_WATCHDOG_SCRIPT
 endef
 endif
 
+ifeq ($(BR2_PACKAGE_BUSYBOX_NTP),y)
+define BUSYBOX_SET_NTP
+	$(call KCONFIG_ENABLE_OPT,CONFIG_NTPD,$(BUSYBOX_BUILD_CONFIG))
+	$(call KCONFIG_ENABLE_OPT,CONFIG_FEATURE_NTPD_CONF,$(BUSYBOX_BUILD_CONFIG))
+endef
+define BUSYBOX_INSTALL_NTP_SCRIPT
+	$(INSTALL) -D -m 0644 package/busybox/ntp.conf \
+		$(TARGET_DIR)/etc/ntp.conf
+	$(INSTALL) -D -m 0755 package/busybox/S49ntp \
+		$(TARGET_DIR)/etc/init.d/S49ntp
+endef
+endif
+
 # Enable "noclobber" in install.sh, to prevent BusyBox from overwriting any
 # full-blown versions of apps installed by other packages with sym/hard links.
 define BUSYBOX_NOCLOBBER_INSTALL
@@ -166,6 +179,7 @@ define BUSYBOX_KCONFIG_FIXUP_CMDS
 	$(BUSYBOX_SET_CRYPT_SHA)
 	$(BUSYBOX_INTERNAL_SHADOW_PASSWORDS)
 	$(BUSYBOX_SET_INIT)
+	$(BUSYBOX_SET_NTP)
 	$(BUSYBOX_SET_WATCHDOG)
 endef
 
@@ -188,6 +202,7 @@ endef
 
 define BUSYBOX_INSTALL_INIT_SYSV
 	$(BUSYBOX_INSTALL_MDEV_SCRIPT)
+	$(BUSYBOX_INSTALL_NTP_SCRIPT)
 	$(BUSYBOX_INSTALL_LOGGING_SCRIPT)
 	$(BUSYBOX_INSTALL_WATCHDOG_SCRIPT)
 endef
diff --git a/package/busybox/ntp.conf b/package/busybox/ntp.conf
new file mode 100644
index 0000000..9851d9f
--- /dev/null
+++ b/package/busybox/ntp.conf
@@ -0,0 +1,2 @@
+server 0.pool.ntp.org
+server 1.pool.ntp.org
-- 
2.1.4