diff options
Diffstat (limited to 'recipes-support/ntp/files/ntpdate')
| -rwxr-xr-x | recipes-support/ntp/files/ntpdate | 59 |
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 |