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# Sample dhcpcd hook script for ntp
# Like our resolv.conf hook script, we store a database of ntp.conf files
# and merge into /etc/ntp.conf
# You can set the env var NTP_CONF to another file like this
# dhcpcd -e NTP_CONF=/usr/pkg/etc/ntpd.conf
# or by adding this to /etc/dhcpcd.enter-hook
# NTP_CONF=/usr/pkg/etc/ntpd.conf
# to use openntpd from pkgsrc instead of the system provided ntp.
: ${ntpd_restart_cmd:=service_condcommand ntpd restart}
if type invoke-rc.d >/dev/null 2>&1; then
# Debian has a seperate file for DHCP config to avoid stamping on
# the master.
[ -e /var/lib/ntp ] || mkdir /var/lib/ntp
: ${NTP_DHCP_CONF:=/var/lib/ntp/ntp.conf.dhcp}
fi
ntp_conf_dir="$state_dir/ntp.conf"
ntp_conf=${NTP_CONF:-/etc/ntp.conf}
build_ntp_conf()
{
local cf="$state_dir/ntp.conf.$interface"
local interfaces= header= srvs= servers= x=
# Build a list of interfaces
interfaces=$(list_interfaces "$ntp_conf_dir")
if [ -n "$interfaces" ]; then
# Build the header
for x in ${interfaces}; do
header="$header${header:+, }$x"
done
# Build a server list
srvs=$(cd "$ntp_conf_dir";
key_get_value "server " $interfaces)
if [ -n "$srvs" ]; then
for x in $(uniqify $srvs); do
servers="${servers}server $x\n"
done
fi
fi
# Merge our config into ntp.conf
[ -e "$cf" ] && rm -f "$cf"
[ -d "$ntp_conf_dir" ] || mkdir -p "$ntp_conf_dir"
if [ -n "$NTP_DHCP_CONF" ]; then
cp "$ntp_conf" "$cf"
ntp_conf="$NTP_DHCP_CONF"
elif [ -e "$ntp_conf" ]; then
remove_markers "$signature_base" "$signature_base_end" \
"$ntp_conf" > "$cf"
fi
if [ -n "$servers" ]; then
echo "$signature_base${header:+ $from }$header" >> "$cf"
printf "$search$servers" >> "$cf"
echo "$signature_base_end${header:+ $from }$header" >> "$cf"
else
[ -e "$ntp_conf" ] || return
fi
# If we changed anything, restart ntpd
if change_file "$ntp_conf" "$cf"; then
[ -n "$ntpd_restart_cmd" ] && eval $ntpd_restart_cmd
fi
}
add_ntp_conf()
{
local cf="$ntp_conf_dir/$interface" x=
[ -e "$cf" ] && rm "$cf"
[ -d "$ntp_conf_dir" ] || mkdir -p "$ntp_conf_dir"
if [ -n "$new_ntp_servers" ]; then
for x in $new_ntp_servers; do
echo "server $x" >> "$cf"
done
fi
build_ntp_conf
}
remove_ntp_conf()
{
if [ -e "$ntp_conf_dir/$interface" ]; then
rm "$ntp_conf_dir/$interface"
fi
build_ntp_conf
}
if $if_up; then
add_ntp_conf add
elif $if_down; then
remove_ntp_conf del
fi
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