50 lines
970 B
Bash
50 lines
970 B
Bash
#!/bin/sh
|
|
|
|
PATH=/sbin:/bin:/usr/bin
|
|
|
|
test -x /usr/bin/ntpdate || exit 0
|
|
|
|
if test -f /etc/default/ntpdate ; then
|
|
. /etc/default/ntpdate
|
|
else
|
|
NTPSERVERS="pool.ntp.org"
|
|
fi
|
|
|
|
test -n "$NTPSERVERS" || exit 0
|
|
|
|
# This is a heuristic: The idea is that if a static interface is brought
|
|
# up, that is a major event, and we can put in some extra effort to fix
|
|
# the system time. Feel free to change this, especially if you regularly
|
|
# bring up new network interfaces.
|
|
if [ "$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/bin/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
|
|
|
|
) &
|