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#!/bin/ash
# Sync time via network
. /etc/openslx
# Try to merge with servers from DHCP. Prefer DHCP, skip duplicates
for SERVER in $SLX_NTP_SERVER; do
if ! echo "$SLX_DHCP_NTP" | grep -wq "$SERVER"; then
SLX_DHCP_NTP="$SLX_DHCP_NTP $SERVER"
fi
done
SUCCESS=
for SERVER in $SLX_DHCP_NTP; do
if timeout 3 ntpd -q -n -p "$SERVER"; then
echo "Successfully queried $SERVER for time."
if [ "$SLX_BIOS_CLOCK" = "local" ]; then
usleep 100000
hwclock -l -w || echo "... but could not set BIOS clock to localtime"
elif [ "$SLX_BIOS_CLOCK" = "utc" ]; then
usleep 100000
hwclock -u -w || echo "... but could not set BIOS clock to UTC"
fi
SUCCESS=1
break
fi
echo "Error querying $SERVER for current time."
done
if [ -z "$SUCCESS" ]; then
echo "No NTP server reachable"
# See if we have a timestamp in our server-config - should only be a few seconds off by now
if [ -n "$SLX_NOW" ] && [ "$SLX_NOW" -gt 1234567890 ]; then
TTS="$SLX_NOW"
CONFIG_DOWNLOAD_TIME=$( cat /tmp/config-download-time 2> /dev/null )
if [ -n "$CONFIG_DOWNLOAD_TIME" ]; then
# times are in centiseconds
NOW_TIME=$(sed -r 's/^([0-9]+)\.([0-9][0-9]).*$/\1\2/' /proc/uptime)
if [ "$CONFIG_DOWNLOAD_TIME" -gt 0 ] && [ "$NOW_TIME" -gt 0 ]; then
TTS=$(( TTS + ( NOW_TIME - CONFIG_DOWNLOAD_TIME ) / 100 ))
fi
fi
echo "Setting time to SLX_NOW ($SLX_NOW, corrected $TTS)"
date -s "@$TTS"
else
echo "No fallback option for timesync available, relying on correct RTC setup"
if [ "$SLX_BIOS_CLOCK" = "local" ]; then
# Linux defaults to RTC = UTC, so read again in this case
hwclock -l -s
fi
fi
fi
echo "Timesync finished"
exit 0
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