#!/bin/sh

# 6h
UPDATES_SLEEP=21600
UPDATES_VM=`qvm-get-updatevm`

QREXEC_CLIENT=/usr/lib/qubes/qrexec_client

if [ -z "$UPDATES_VM" ]; then
    echo "UpdateVM not set, exiting!" >&2
    exit 1
fi

if ! xl domid "$UPDATES_VM" > /dev/null 2>&1; then
    echo "UpdateVM not started, exiting!"
    exit 1
fi

(
# Allow only one instance
flock --nonblock -s 200 || exit 1
while true; do
    qvm-sync-dom0-clock

    sleep $UPDATES_SLEEP
done


) 200> /var/run/qubes/clock-watch-lock