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#!/bin/bash
# (using bashism (arrays) in dhcp config)
#exec >/dev/null
exec 2>&1
exec </dev/null
user=root
start_delay=15
net_down_delay=5
pool="us.pool.ntp.org" # replace "us" with your country code
service="${PWD##*/}"
rundir="/var/run/service/$service"
default_p_opt="-p 0.$pool -p 1.$pool -p 2.$pool -p 3.$pool"
echo "* Checking network"
test -f /var/run/service/fw/up || exec sleep $net_down_delay
# With multiple interfaces (e.g. wired+wireless) going up,
# networking scripts may restart ntpd service several times
# in quick succession. Do not be too eager to start sending
# NTP requests:
sleep $start_delay
# Make sure rundir/ exists
mkdir -p "$rundir" 2>/dev/null
chown -R "$user": "$rundir"
chmod -R a=rX "$rundir"
rm -rf rundir 2>/dev/null
ln -s "$rundir" rundir
# Grab config from dhcp
cfg=-1
for f in rundir/*.ntpconf; do
test -f "$f" || continue
. "$f"
done
# Select peers
p_opt=""
cfg=0
while test x"${ntpip[$cfg]}" != x""; do
p_opt="$p_opt -p ${ntpip[$cfg]}"
let cfg=cfg+1
done
test x"$p_opt" == x"" && p_opt="$default_p_opt"
if test x"$p_opt" == x""; then
echo "* No NTP peers configured, stopping"
svc -o .
exec sleep 1
fi
# Let others know that we are up
date '+%Y-%m-%d %H:%M:%S %Z' >rundir/up
# Go go go
echo "* Starting ntpd[$$]"
exec \
env - PATH="$PATH" \
softlimit \
setuidgid "$user" \
ntpd -ddnNl -S ./ntp.script $p_opt
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