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