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#!/sbin/runscript
# Copyright 1999-2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/app-emulation/lxc/files/lxc.initd,v 1.3 2011/02/26 18:02:51 flameeyes Exp $
CONTAINER=${SVCNAME#*.}
CONFIGFILE=${CONFIGFILE:-/etc/lxc/${CONTAINER}.conf}
lxc_get_var() {
awk 'BEGIN { FS="[ \t]*=[ \t]*" } $1 == "'$1'" { print $2; exit }' ${CONFIGFILE}
}
cgroup_get_mount() {
mount | awk '$5 == "cgroup" { print $3; exit }'
}
checkconfig() {
if [ ${CONTAINER} = ${SVCNAME} ]; then
eerror "You have to create an init script for each container:"
eerror " ln -s lxc /etc/init.d/lxc.container"
return 1
fi
utsname=$(lxc_get_var lxc.utsname)
if [ ${CONTAINER} != ${utsname} ]; then
eerror "You should use the same name for the service and the"
eerror "container. Right now the container is called ${utsname}"
return 1
fi
}
depend() {
# be quiet, since we have to run depend() also for the
# non-muxed init script, unfortunately.
checkconfig 2>/dev/null || return 0
config ${CONFIGFILE}
need localmount
# find out which network interface the container is linked to,
# and then require that to be enabled, so that the
# dependencies are correct.
netif=$(lxc_get_var lxc.network.link)
[ -n "${netif}" ] && need net.${netif}
}
start() {
checkconfig || return 1
# make sure that cgroup is mounted if it isn't already, this
# ensures that we can actually proceed!
cgroupmount=$(cgroup_get_mount)
if [ -z ${cgroupmount} ]; then
mkdir -p /cgroup
if ! mount -t cgroup cgroup /cgroup; then
eerror "Unable to mount cgroup pseudo-filesystem on /cgroup"
return 1
fi
cgroupmount=/cgroup
fi
rm /var/log/lxc/${CONTAINER}.log
rootpath=$(lxc_get_var lxc.rootfs)
# Check the format of our init and the chroot's init, to see if we
# have to use linux32 or linux64…
case $(scanelf -BF '%M#f' /sbin/init ${rootpath}/sbin/init | tr '\n' ':') in
ELFCLASS64:ELFCLASS64:) setarch=;;
ELFCLASS32:ELFCLASS32:) setarch=;;
ELFCLASS32:ELFCLASS64:) setarch=linux64;;
ELFCLASS64:ELFCLASS32:) setarch=linux32;;
esac
ebegin "Starting ${CONTAINER}"
${setarch} lxc-start -l WARN -n ${CONTAINER} -f ${CONFIGFILE} -d -o /var/log/lxc/${CONTAINER}.log
sleep 0.5
# lxc-start -d will _always_ report a correct startup, even if it
# failed, so rather than trust that, check that the cgroup exists.
[ -d ${cgroupmount}/${CONTAINER} ]
eend $?
}
stop() {
checkconfig || return 1
cgroupmount=$(cgroup_get_mount)
if ! [ -d ${cgroupmount}/${CONTAINER} ]; then
ewarn "${CONTAINER} doesn't seem to be started."
return 0
fi
init_pid=$(head -n1 ${cgroupmount}/${CONTAINER}/tasks)
ebegin "Shutting down system in ${CONTAINER}"
kill -INT ${init_pid}
eend $?
sleep 15
missingprocs=$(pgrep -P ${init_pid})
if [ -n "${missingprocs}" ]; then
ewarn "Something failed to properly shut down in ${CONTAINER}"
fi
ebegin "Stopping ${CONTAINER}"
lxc-stop -n ${CONTAINER}
eend $?
}
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