diff options
Diffstat (limited to 'app-emulation/qemu-init-scripts/files/qemu-init-script')
| -rw-r--r-- | app-emulation/qemu-init-scripts/files/qemu-init-script | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/app-emulation/qemu-init-scripts/files/qemu-init-script b/app-emulation/qemu-init-scripts/files/qemu-init-script new file mode 100644 index 0000000..ba9aae3 --- /dev/null +++ b/app-emulation/qemu-init-scripts/files/qemu-init-script @@ -0,0 +1,157 @@ +#!/sbin/runscript +# Copyright 2009 Gentoo Foundation +# Distributed under the terms of the GNU General Public License v2 + +# To use this, symlink a target kvm instance to this script. +# Literally, ln -s qemu /etc/init.d/<vm-type>.<vmname> +# then have a config named /etc/conf.d/<vm-type>.<vmname> +# +# Allowed vm-types are currently qemu and kvm. + + +VMNAME=${SVCNAME#*.} +VMTYPE=${SVCNAME%.*} +VM_BINARY= +PIDFILE=/var/run/vm/${SVCNAME}.pid +MONITOR=/var/run/vm/${SVCNAME}.monitor +QTAP_FILE=/var/run/vm/${SVCNAME}.qtap + +discern_vm_binary() { + case "$VMTYPE" in + kvm) + VM_BINARY=`type -p qemu-kvm` + [ -z "$VM_BINARY" ] && VM_BINARY=`type -p kvm` + ;; + qemu) + VM_BINARY=`type -p qemu` + ;; + *) + eerror "Failed to discern the binary for $VMTYPE" + ;; + esac + return 0 +} + + +DROP_USER=${DROP_USER:-nobody} +MEMORY=${MEMORY:-512M} +TIMEOUT=${TIMEOUT:-300} +SMP=${SMP:-1} +export KVM_USER=${KVM_USER:-"root"} + +extra_commands="reboot" + +depend() { + need net.br0 +} + +send_command() { + local command="socat -u - UNIX-CONNECT:${MONITOR}" + type -p nc6 > /dev/null && command="nc6 -U ${MONITOR} --send-only" + echo "$@" | ${command} > /dev/null 2>&1 +} + +sanity_check() { + if [ "${VMNAME}" = "${SVCNAME}" ]; then + eerror "You have to create an init script for each vm:" + eerror " ln -s vm /etc/init.d/vm.vmname" + return 1 + elif [ ! -f "${DISKIMAGE}" -a ! -b "${DISKIMAGE}" ]; then + eerror "couldn't find \$DISKIMAGE '$DISKIMAGE'" + return 1; + fi + discern_vm_binary +} + +start() { + sanity_check || return 1 + + img=$(readlink -f "${DISKIMAGE}") + [ -z "$img" ] && { + eerror "couldn't find ${DISKIMAGE}" + return 1; + } + + mkdir -p "${PIDFILE%/*}" "${MONITOR%/*}" + ebegin "creating qtap ${QTAP:-(auto allocating one)}" + if [ -n "$QTAP" ]; then + qtap-manipulate create_specific "${QTAP}" -u "${DROP_USER}" + else + QTAP=$(qtap-manipulate create -u "${DROP_USER}") + if [ 0 != $? ]; then + eerror "failed to create qtap interface" + return 1 + fi + fi + echo "${QTAP}" > ${QTAP_FILE} + eend $? + + ebegin "Starting ${VM_BINARY##*/} for ${VMNAME} at VNC port${VNC}" + start-stop-daemon --start "${VM_BINARY}" \ + --pidfile ${PIDFILE} \ + -- -daemonize -pidfile ${PIDFILE} -monitor unix:${MONITOR},server,nowait \ + -runas ${DROP_USER} -name ${VMNAME} \ + -drive file="$img",if=${DRIVE_MODEL:-virtio},cache=${DRIVE_CACHE:-none} \ + -net nic,model=${NIC_MODEL:-virtio},macaddr=${MACADDR} -net tap,ifname=${QTAP},script=no \ + ${DISABLE_KVM:---enable-kvm} \ + ${MEMORY:+-m ${MEMORY}} ${SMP:+-smp ${SMP}} ${VNC:+-vnc ${VNC}} ${OTHER_ARGS} + ret=$? + if [ "0" != "${ret}" ]; then + qtap-manipulate destroy ${QTAP} + fi + eend ${ret} +} + +reboot() { + if [ ${VMNAME} = ${SVCNAME} ]; then + eerror "You have to create an init script for each vm:" + eerror " ln -s vm /etc/init.d/vm.vmname" + return 1 + fi + + ebegin "Rebooting ${VMNAME}" + send_command system_reset + eend $? +} + +stop() { + sanity_check || return 1 + + ebegin "Powering off ${VMNAME}" + send_command system_powerdown + eend $? + + ebegin "waiting up to ${TIMEOUT:-60} seconds for it to die" + local pid + [ -s "${PIDFILE}" ] && pid=$(cat "${PIDFILE}") + if [ -z "$pid" ]; then + eerror "Couldn't find stored pid at '$PIDFILE'; user will have to manually kill kvm" + eerror "Will attempt to destroy qtap despite." + eend 1 + else + local ret=1 + for x in $(seq 0 ${TIMEOUT:-60}); do + if kill -0 "${pid}" > /dev/null 2>&1; then + sleep 1s + continue + fi + ret=0 + break + done + eend $ret + fi + + ebegin "Stopping ${VM_BINARY##*/} for ${VMNAME}" + start-stop-daemon --stop "${VM_BINARY}" \ + --user "${DROP_USER}" \ + --pidfile "${PIDFILE}" \ + --quiet + eend $? + local qtap + [ -s "${QTAP_FILE}" ] && qtap=$(cat "${QTAP_FILE}") + if [ -n "$qtap" ]; then + ebegin "destroying qtap ${qtap}" + qtap-manipulate destroy ${qtap} + eend $? + fi +} |