config: allow specification of the NTP server

At configuration time, before building, users can select the ntpserver to be used to prime WR time at boot. By default no server is queried. Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

config: allow specification of the NTP server
At configuration time, before building, users can select the ntpserver to be used to prime WR time at boot. By default no server is queried. Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
678c53ff · Alessandro Rubini · d362bb50 · 678c53ff · 678c53ff
Commit 678c53ff authored Jan 31, 2014 by Alessandro Rubini
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Kconfig Kconfig +8 -0

wrs_build_wraprootfs build/scripts/wrs_build_wraprootfs +4 -0

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--- a/Kconfig
+++ b/Kconfig
@@ -36,6 +36,14 @@ endchoice

 menu "Local configuration"

+config NTP_SERVER
+	string "IP address of local NTP server (empty for none)"
+	help
+	  At boot time, the White Rabbit time is primed by querying
+	  an NTP server, if any is there.  Please write here the
+	  IPV4 address (e.g.: "192.168.16.1"); an empty string
+	  disables NTP-based priming.
+
 config KEEP_ROOTFS
 	bool "Keep generated filesystem and related script"
 	help

--- a/build/scripts/wrs_build_wraprootfs
+++ b/build/scripts/wrs_build_wraprootfs
@@ -41,6 +41,10 @@ rm -rf $TMPFS/dev
 (cd $TMPFS && tar xzf $DEVTAR)
 (cd $TMPFS && ln -fs sbin/init .)

+if [ ! -z "$CONFIG_NTP_SERVER" ]; then
+    echo "ntpserver $CONFIG_NTP_SERVER" > $TMPFS/wr/etc/wr_date.conf
+fi
+
 mkdir -p $TMPFS/root/.ssh
 #cat $HOME/.ssh/id_?sa.pub >> $TMPFS/root/.ssh/authorized_keys
 if [ -f $WRS_BASE_DIR/authorized_keys ]; then