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Diffstat (limited to 'app-emulation/qemu-init-scripts/files/qemu-init-script')
-rw-r--r--app-emulation/qemu-init-scripts/files/qemu-init-script157
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
+}