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-rwxr-xr-xrecipes-support/ntp/files/ntpdate59
1 files changed, 59 insertions, 0 deletions
diff --git a/recipes-support/ntp/files/ntpdate b/recipes-support/ntp/files/ntpdate
new file mode 100755
index 0000000..be3bacf
--- /dev/null
+++ b/recipes-support/ntp/files/ntpdate
@@ -0,0 +1,59 @@
+#!/bin/sh
+
+PATH=/sbin:/bin:/usr/bin:/usr/sbin
+
+test -x /usr/sbin/ntpdate || exit 0
+
+if test -f /etc/default/ntpdate ; then
+. /etc/default/ntpdate
+fi
+
+if [ "$NTPSERVERS" = "" ] ; then
+ if [ "$METHOD" = "" -a "$1" != "silent" ] ; then
+ echo "Please set NTPSERVERS in /etc/default/ntpdate"
+ exit 1
+ else
+ exit 0
+ fi
+fi
+
+# This is a heuristic: The idea is that if a static interface is brought
+# up, that is a major event, and we can put in some extra effort to fix
+# the system time. Feel free to change this, especially if you regularly
+# bring up new network interfaces.
+if [ "$METHOD" = static ]; then
+ OPTS="-b"
+fi
+
+if [ "$METHOD" = loopback ]; then
+ exit 0
+fi
+
+(
+
+LOCKFILE=/var/lock/ntpdate
+
+# Avoid running more than one at a time
+if [ -x /usr/bin/lockfile-create ]; then
+ lockfile-create $LOCKFILE
+ lockfile-touch $LOCKFILE &
+ LOCKTOUCHPID="$!"
+fi
+
+if /usr/sbin/ntpdate -s $OPTS $NTPSERVERS 2>/dev/null; then
+ if [ "$UPDATE_HWCLOCK" = "yes" ]; then
+ hwclock --systohc || :
+ fi
+fi
+
+if [ -x /usr/bin/lockfile-create ] ; then
+ kill $LOCKTOUCHPID
+ lockfile-remove $LOCKFILE
+fi
+
+) &
+
+# wait for all subprocesses to finish
+# this is required when using systemd service as ntpd will start before ntpdate finishes
+# and results in a bind error (port 123)
+wait