| #!/bin/sh |
| |
| DAEMON="sntp" |
| # sntp uses all the IPs resolved for the hostname (i.e. pool.ntp.org has 4). |
| # It will try each until they either all timeout or time has been set. Thus |
| # default to only providing one NTP pool host. |
| SNTP_SERVERS="pool.ntp.org" |
| # Step if time delta is greater then 128ms, otherwise slew |
| SNTP_ARGS="-Ss -M 128" |
| SNTP_KEY_CACHE="/tmp/kod" |
| |
| # shellcheck source=/dev/null |
| [ -r "/etc/default/$DAEMON" ] && . "/etc/default/$DAEMON" |
| |
| start() { |
| printf 'Starting %s: ' "$DAEMON" |
| # Create key cache file to prevents warning that file is missing |
| touch $SNTP_KEY_CACHE |
| # shellcheck disable=SC2086 # we need the word splitting |
| /usr/bin/$DAEMON $SNTP_ARGS -K $SNTP_KEY_CACHE $SNTP_SERVERS |
| # sntp behavior |
| # - Does not background |
| # - Does not infinitely block |
| # - Time-out w/o network = ~2 sec |
| # - Time-out w/ network = ~5sec * # of servers |
| status=$? |
| if [ "$status" -eq 0 ]; then |
| echo "OK" |
| else |
| echo "FAIL" |
| fi |
| return "$status" |
| } |
| |
| stop() { |
| echo "Nothing to do, $DAEMON is not a daemon." |
| } |
| |
| restart() { |
| stop |
| sleep 1 |
| start |
| } |
| |
| reload() { |
| echo "Nothing to do, $DAEMON does not support reload." |
| } |
| |
| case "$1" in |
| start|stop|restart|reload) |
| "$1";; |
| *) |
| echo "Usage: $0 {start|stop|restart|reload}" |
| exit 1 |
| esac |
