diff options
Diffstat (limited to 'app-emulation/qemu-init-scripts/files')
3 files changed, 287 insertions, 0 deletions
diff --git a/app-emulation/qemu-init-scripts/files/qemu-conf.example b/app-emulation/qemu-init-scripts/files/qemu-conf.example new file mode 100644 index 0000000..46f8274 --- /dev/null +++ b/app-emulation/qemu-init-scripts/files/qemu-conf.example @@ -0,0 +1,12 @@ +VMSOFTWARE=kvm +MACADDR=52:54:1C:10:34:35 +DISKIMAGE=/mnt/kvm/gentoo64.qcow2 +MEMORY=1G +SMP=4 +VNC=:24 +NIC_MODEL=virtio +DRIVE_MODEL=virtio +#OTHER_ARGS="-boot order=dc -cdrom /mnt/archive/gentoo/install-amd64-minimal-20100408.iso" +OTHER_ARGS=" -boot order=cd -cdrom /mnt/archive/gentoo/systemrescuecd-x86-1.5.6.iso" +#OTHER_ARGS="-vga std -boot order=dc -cdrom /dev/sdc" +#TIMEOUT=60 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 +} diff --git a/app-emulation/qemu-init-scripts/files/qtap-manipulate b/app-emulation/qemu-init-scripts/files/qtap-manipulate new file mode 100644 index 0000000..426bc78 --- /dev/null +++ b/app-emulation/qemu-init-scripts/files/qtap-manipulate @@ -0,0 +1,118 @@ +#!/bin/sh +# Copyright 1999-2012 Gentoo Foundation +# Distributed under the terms of the GNU General Public Licens + +has() { + local desired=$1 x + shift + for x in "$@"; do + [ "$desired" = "$x" ] && return 0; + done + return 1 +} + +find_available_node() { + local val=$(ifconfig -a | grep -i ^qtap | cut -d ' ' -f1) + # Strip off ifconfig appended ':' + val="${val%:}" + local pos=0 + while has qtap${pos} $val; do + pos=$(( $pos + 1 )) + done + echo qtap${pos} +} + +create_node() { + local qtap="$1" + shift + tunctl -b -t "${qtap}" "$@" > /dev/null || die "tunctl failed" + brctl addif br0 "${qtap}" || die "brctl failed" + ifconfig "${qtap}" up 0.0.0.0 promisc || die "ifconfig failed" +} + +destroy_node() { + issue= + ifconfig ${1} down || { echo "ifconfig failed";issue=1; } + brctl delif br0 ${1} || { echo "brctl failed";issue=2; } + tunctl -d ${1} > /dev/null || { echo "tunctl failed";issue=3;} + [ -n "${issue}" ] && exit $(( $issue )) +} + +die() { + echo "$@" >&2 + exit 1 +} + +usage() { + echo "commands available:" + echo "create-specific qtap-name [ -u user ] [ -g group ]" + echo "create [ -u user ] [ -g group ]" + echo "destroy qtap-name" + echo +} + +usage_die() { + usage + die "$@" +} + +create_user= +create_group= + +parse_create_options() { + while [ $# -ne 0 ]; do + local x="$1" + case "$x" in + -u=*) + shift + set -- "-u" "${x#-u=}" "$@" + ;& + -u) + shift + [ -z "$1" ] && die "-u requires an argument" + create_user="$1" + shift + ;; + -g=*) + shift + set -- "-g" "${x#-u=}" "$@" + ;& + -g) + shift + [ -z "$1" ] && die "-g requires an argument" + create_group="$2" + shift + ;; + *) + die "unknown option $1" + esac + done +} + +output_qtap=false +case "$1" in + destroy) + shift + [ $# -eq 0 ] && usage_die "destroy requires a second argument" + [ $# -gt 1 ] && usage_die "no idea what to do with args: $@" + destroy_node "$1" + ;; + create) + output_qtap=true + qtap=$(find_available_node) + [ -z "$qtap" ] && die "failed to find a qtap node to use" + shift + set -- create_specific "${qtap}" "$@" + ;& + create_specific) + shift + qtap="$1"; shift + parse_create_options "$@" + create_node "$qtap" + $output_qtap && echo "$qtap" + ;; + *) + usage_die "Unknown command $1" + ;; +esac +exit 0 |