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#!/sbin/openrc-run
# Copyright 1999-2015 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id: 6842888f82472d095704e78b3fefdbd2678df7ba $
extra_commands="configtest"
: ${DHCPD_CONF:=/etc/dhcp/${SVCNAME}.conf}
depend() {
need net
use logger dns #@slapd@
}
get_var() {
local var
var="$( sed -n 's/^[[:blank:]]\?'"$1"' "*\([^#";]\+\).*/\1/p' "${chroot}${DHCPD_CONF}" )"
printf '%s' "${var:-${2}}"
}
setup_opts() {
DHCPD_CHROOT=${DHCPD_CHROOT%/}
# Work out our cffile if it's in our DHCPD_OPTS
case " ${DHCPD_OPTS} " in
*" -cf "*)
DHCPD_CONF=" ${DHCPD_OPTS} "
DHCPD_CONF="${DHCPD_CONF##* -cf }"
DHCPD_CONF="${DHCPD_CONF%% *}"
;;
*) DHCPD_OPTS="${DHCPD_OPTS} -cf ${DHCPD_CONF}"
;;
esac
}
checkconfig() {
local rc
declare -i rc
set -- ${DHCPD_OPTS} ${DHCPD_CHROOT:+-chroot "${DHCPD_CHROOT:-/}"} -t
dhcpd "${@}" >/dev/null 2>&1
rc=${?}
if [ ${rc} -ne 0 ] ; then
eerror "${SVCNAME} has detected a syntax error in your configuration files:"
dhcpd "${@}"
fi
return ${rc}
}
configtest() {
setup_opts
ebegin "Checking ${SVCNAME} configuration"
checkconfig
eend ${?}
}
start() {
local chroot="${DHCPD_CHROOT:-}" git=""
setup_opts
if [ -n "${DHCPD_USE_GIT:-}" ] && [ "${DHCPD_USE_GIT}" != "0" ]; then
type -pf git >/dev/null 2>&1 && git="git"
fi
# see comment in get_var() above
if [ ! -f "${chroot}${DHCPD_CONF}" ] ; then
eerror "${chroot}${DHCPD_CONF} does not exist"
return 1
fi
if [ -n "${chroot}" ] ; then
# dhcpd config test wants these to exist
mkdir -p \
"${chroot}"/var/run/dhcp \
"${chroot}"/var/lib/dhcp \
"${chroot}"/etc/dhcp
fi
checkconfig || return 1
checkpath -d -o dhcp:dhcp "${chroot}"/var/run/dhcp "${chroot}"/var/lib/dhcp
local leasefile
leasefile="$( get_var 'lease-file-name' "/var/lib/dhcp/${SVCNAME}.leases" )"
checkpath -f -o dhcp:dhcp "${chroot}${leasefile}"
if [ -n "${chroot:-}" ] && [ -d "${chroot}" ] ; then
local lib name
ebegin "Populating chroot directory"
mkdir -p "${chroot}"/lib "${chroot}"/usr/sbin "${chroot}"/usr/lib
checkpath -d -o root:root -m 0755 "${chroot}"/usr "${chroot}"/usr/sbin
${git:-} rm "${chroot}"/lib/*.so* "${chroot}"/usr/lib/*.so* 2>/dev/null
cp -a /usr/sbin/dhcpd "${chroot}"/usr/sbin/
for lib in $( ldd /usr/sbin/dhcpd | grep '=>' | sed 's/^.*=>//' | cut -d" " -f 2 | grep -v "^$" ) /lib/libresolv.so.2 /lib/libnss_dns.so.2; do
cp "${lib}" "${chroot}"/"${lib}" || { eerror "Cannot copy \"$lib\" to \"${chroot}\"" ; return 1 ; }
done
find "${chroot}"/lib -type l -delete
for lib in libresolv.so libnss_dns.so; do
name="$( readlink -e /lib/"${lib}"* )"
cp "${name}" "${chroot}"/lib/ || { eerror "Cannot copy \"${lib}\" to \"${chroot}\"" ; return 1 ; }
ln -s "$( basename "${name}" )" "${chroot}"/lib/"${lib}" || { eerror "Cannot create \"${name}\" symlink" ; return 1 ; }
done
eend 0
checkpath -d -o root:root -m 755 "${chroot}"/dev "${chroot}"/etc "${chroot}"/proc
rm "${chroot}"/etc/{localtime,resolv.conf}
cp -Lp /etc/{localtime,resolv.conf} "${chroot}"/etc/
if [ -d "${chroot}"/.git ] && [ -n "${git:-}" ]; then
if ! [ -s "${chroot}"/.gitignore ]; then
cat >>"${chroot}"/.gitignore <<-EOF
/etc/dhcp/*.sample
/proc/**
**/.keep*
*.pid
*.leases
*.leases~
EOF
fi
pushd "${chroot}" >/dev/null 2>&1 &&
git status 2>/dev/null | grep -Eq '^(Untracked files:$|:\s+(deleted|modified|new file):\s+)' &&
einfo "Committing chroot changes to git"
git add --all . >/dev/null 2>&1 &&
git commit -m "Record changes on ${SVCNAME} start" >/dev/null 2>&1
popd >/dev/null 2>&1
fi
# Setup LD_PRELOAD so name resolution works in our chroot.
export LD_PRELOAD="${LD_PRELOAD} libresolv.so libnss_dns.so"
if ! mountinfo -q "${chroot}/proc" ; then
mount --bind /proc "${chroot}/proc"
fi
fi
local pidfile
pidfile="$( get_var 'pid-file-name' "/var/run/dhcp/${SVCNAME}.pid" )"
ebegin "Starting ${chroot:+chrooted }${SVCNAME}"
start-stop-daemon --start --pidfile "${chroot}/${pidfile}" \
--exec /usr/sbin/dhcpd -- ${DHCPD_OPTS} -q -pf "${pidfile}" \
-lf "${leasefile}" -user dhcp -group dhcp \
${chroot:+-chroot "${chroot:-/}"} ${DHCPD_IFACE:-}
if eend ${?}; then
save_options 'dhcpd_chroot' "${chroot}" &&
save_options 'pidfile' "${pidfile}"
else
set -o xtrace
/usr/sbin/dhcpd ${DHCPD_OPTS} -pf "${pidfile}" -lf "${leasefile}" -user dhcp -group dhcp ${chroot:+-chroot "${chroot:-/}"} ${DHCPD_IFACE:-}
#set +o xtrace
fi
}
stop() {
local chroot rc
declare -i rc
chroot="$( get_options 'dhcpd_chroot' )"
[ -z "${chroot:-}" ] && chroot="$( get_options 'chroot' )"
ebegin "Stopping ${chroot:+chrooted }${SVCNAME}"
start-stop-daemon --stop --exec /usr/sbin/dhcpd \
--pidfile "${chroot}/$( get_options 'pidfile' )"
rc=${?}
if [ ${rc} -eq 0 ] && [ -n "${chroot}" ] ; then
if mountinfo -q "${chroot}/proc" ; then
umount "${chroot}/proc"
fi
fi
eend ${rc}
}
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