79 lines
1.6 KiB
Bash
79 lines
1.6 KiB
Bash
#!/bin/sh
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# Copyright (C) 2006-2014 OpenWrt.org
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. /lib/functions.sh
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unset SERVER
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unset PORT
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unset INTERVAL
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unset COUNT
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unset INTERFACE_GLOBAL
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NTPC=$(command -v ntpclient)
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check_server() {
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local hostname
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local port
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local interface
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[ -n "$SERVER" ] && return
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config_get hostname $1 hostname
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config_get port $1 port
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config_get interface $1 interface
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[ -z "$interface" ] && interface=$INTERFACE_GLOBAL
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[ -n "$interface" ] && {
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# $INTERFACE is passed from hotplug event
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[ "$interface" = "$INTERFACE" ] || return
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}
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[ -z "$hostname" ] && return
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$NTPC -c 1 -p ${port:-123} -i 2 -h $hostname > /dev/null && { SERVER=$hostname; PORT=${port:-123}; }
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}
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set_drift() {
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config_get freq $1 freq
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[ -n "$freq" ] && adjtimex -f $freq >/dev/null
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}
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start_ntpclient() {
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config_foreach set_drift ntpdrift
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config_foreach check_server ntpserver
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[ -z "$SERVER" ] && exit 0
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logger starting ntpclient
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$NTPC ${COUNT:+-c $COUNT} ${INTERVAL:+-i $INTERVAL} -s -l -D -p $PORT -h $SERVER 2> /dev/null
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}
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stop_ntpclient() {
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logger stopping ntpclient
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killall ntpclient
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}
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load_settings() {
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local interval
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local count
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local interface
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config_get interval $1 interval
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config_get count $1 count
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config_get interface $1 interface
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[ -n "$count" ] && COUNT=$count
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[ -n "$interval" ] && INTERVAL=$interval
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[ -n "$interface" ] && INTERFACE_GLOBAL=$interface
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}
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config_load ntpclient
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config_foreach load_settings ntpclient
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NTP_RUNNING=$(busybox ps | grep $NTPC | grep -v grep)
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case "${ACTION:-ifup}" in
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ifup)
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[ -z "$NTP_RUNNING" ] && start_ntpclient
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;;
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ifdown)
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[ -n "$NTP_RUNNING" ] && stop_ntpclient
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;;
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esac
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