#!/bin/sh

set -e

# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <postinst> `abort-remove'
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see https://www.debian.org/doc/debian-policy/ or
# the debian-policy package

. /usr/share/debconf/confmodule

# Allocated UID and GID for libvirt-qemu
LIBVIRT_QEMU_UID=64055
LIBVIRT_QEMU_GID=64055

add_users_groups()
{
    if ! getent group libvirt >/dev/null; then
        addgroup --quiet --system libvirt
    fi

    if ! getent group kvm >/dev/null; then
        addgroup --quiet --system kvm
    fi
    # user and group libvirt runs qemu/kvm instances with
    if ! getent passwd libvirt-qemu >/dev/null; then

        # set uid if available (expected); don't fail otherwise.
        PARAMETER_UID=''
        if ! getent passwd $LIBVIRT_QEMU_UID >/dev/null; then
            PARAMETER_UID="--uid $LIBVIRT_QEMU_UID"
        fi

        adduser --quiet \
                --system \
                --ingroup kvm \
                --quiet \
                --disabled-login \
                --disabled-password \
                --home /var/lib/libvirt \
                --no-create-home \
                --gecos "Libvirt Qemu" \
                $PARAMETER_UID \
                libvirt-qemu
    fi
    if ! getent group libvirt-qemu >/dev/null; then

        # set gid if available (expected); don't fail otherwise.
        PARAMETER_GID=''
        if ! getent group $LIBVIRT_QEMU_GID >/dev/null; then
            PARAMETER_GID="--gid $LIBVIRT_QEMU_GID"
        fi

        addgroup --quiet --system $PARAMETER_GID libvirt-qemu
        adduser --quiet libvirt-qemu libvirt-qemu
    fi

    # Add each sudo user to the libvirt group
    for u in $(getent group sudo | sed -e "s/^.*://" -e "s/,/ /g"); do
        adduser "$u" libvirt >/dev/null || true
    done

    if ! getent group libvirt-dnsmasq >/dev/null; then
        addgroup --quiet --system libvirt-dnsmasq
    fi
    if ! getent passwd libvirt-dnsmasq >/dev/null; then
        adduser --quiet \
                --system \
                --ingroup libvirt-dnsmasq \
                --disabled-login \
                --disabled-password \
                --home /var/lib/libvirt/dnsmasq \
                --no-create-home \
                --gecos "Libvirt Dnsmasq" \
                libvirt-dnsmasq
    fi
    # For upgrades that still have the insecure libvirt group (too much privileges)
    if [ -n "$2" ] && dpkg --compare-versions -- "$2" le-nl "4.0.0-1ubuntu5~"; then
        if [ "$(id -r -g -n libvirt-dnsmasq)" = "libvirt" ]; then
            echo "assigning libvirt-dnsmasq a less privileged group (libvirt->libvirt-dnsmasq)"
            usermod libvirt-dnsmasq -g libvirt-dnsmasq
        fi
    fi

    # These users are usually created and owned by swtpm-tools, but that shall
    # not become a hard dependency, therefore if swtpm-tools isn't present we
    # need to create that user/group here to avoid issues starting the service
    # with the new defaults since LP: 1948880 (LP: #1951975)
    if ! getent group swtpm >/dev/null; then
        addgroup --system swtpm
    fi
    if ! getent passwd swtpm >/dev/null; then
        adduser --system --ingroup swtpm --shell /bin/false \
            --home /var/lib/swtpm --no-create-home \
            --gecos "virtual TPM software stack" \
            swtpm
    fi
}

includes_addr() {
    addr=${1}
    mask=${2}
    viraddr=${3}
    for n in $(seq 1 4); do
        curaddrcomponent=$(echo "${addr}" | awk -F. '{ print $'"${n}"' }')
        tgtaddrcomponent=$(echo "${viraddr}" | awk -F. '{ print $'"${n}"' }')
        cmp=$((mask/8))
        if [ "${cmp}" -ge "${n}" ]; then
            if [ "${curaddrcomponent}" -ne "${tgtaddrcomponent}" ]; then
                echo "false"
                return
            fi
        elif [ "$((cmp+1))" -ge "${n}" ]; then
            # do we bother comparing partial (i.e. /25)?
            :
        else
            break
        fi
    done
    echo "true"
    return
}

set_autostart()
{
    echo "Enabling libvirt default network"
    if [ ! -e /etc/libvirt/qemu/networks/autostart/default.xml ]; then
        ln -s /etc/libvirt/qemu/networks/default.xml \
              /etc/libvirt/qemu/networks/autostart/
    fi
}

# on first install, don't set default network to autostart if we already
# have a conflicting network. Good for instance for nested libvirt.
maybe_set_autostart()
{
    # 122 is the common default, but iterate a few more options
    for thirdoctet in $(seq 122 128); do
        tryip="192.168.${thirdoctet}.1"
        found=0
        for pair in $(ip addr show | grep "inet\>" |awk '{ print $2 }'); do
            a=$(echo "$pair" | awk -F/ '{ print $1}')
            m=$(echo "$pair" | awk -F/ '{ print $2}')
            res=$(includes_addr "${a}" "${m}" "${tryip}")
            if [ "${res}" = "true" ]; then
                found=1
            fi
        done
        if [ $found -ne 1 ]; then
            # found a free subnet
            if [ "${thirdoctet}" -ne "122" ]; then
                echo "Default libvirt network on 192.168.122.1/24 already taken"
                echo "Changing to free 192.168.${thirdoctet}.1/24"
                sed -i 's/192.168.122/192.168.'"${thirdoctet}"'/g' /etc/libvirt/qemu/networks/default.xml
            fi
            set_autostart
            return
        fi
    done
    echo "Not enabling default network as no free network was found"
}

add_statoverrides()
{
    ROOT_DIRS="
        /var/lib/libvirt/images/
        /var/lib/libvirt/boot/
        /var/cache/libvirt/
        /var/cache/libvirt/qemu/
    "

    QEMU_DIRS="
        /var/lib/libvirt/qemu/
        /var/lib/libvirt/qemu/channel/
        /var/lib/libvirt/qemu/channel/target/
    "

    SANLOCK_DIR="/var/lib/libvirt/sanlock"

    QEMU_CONF="/etc/libvirt/qemu.conf"

    SWTPM_DIR="/var/log/swtpm/libvirt/qemu"

    for dir in ${ROOT_DIRS}; do
        if ! dpkg-statoverride --list "${dir}" >/dev/null 2>&1; then
            [ ! -e "${dir}" ] || chown root:root "${dir}"
            [ ! -e "${dir}" ] || chmod 0711 "${dir}"
        fi
    done

    for dir in ${QEMU_DIRS}; do
        if ! dpkg-statoverride --list "${dir}" >/dev/null 2>&1; then
            [ ! -e "${dir}" ] || chown libvirt-qemu:libvirt-qemu "${dir}"
            [ ! -e "${dir}" ] || chmod 0750 "${dir}"
        fi
    done

    if ! dpkg-statoverride --list "${SANLOCK_DIR}" >/dev/null 2>&1; then
        [ ! -e "${SANLOCK_DIR}" ] || chown root:root "${SANLOCK_DIR}"
        [ ! -e "${SANLOCK_DIR}" ] || chmod 0700 "${SANLOCK_DIR}"
    fi

    if ! dpkg-statoverride --list "${QEMU_CONF}" >/dev/null 2>&1; then
        [ ! -e "${QEMU_CONF}" ] || chown root:root "${QEMU_CONF}"
        [ ! -e "${QEMU_CONF}" ] || chmod 0600 "${QEMU_CONF}"
    fi

    # swtpm shall use user swtpm (LP: #1948880)
    if ! dpkg-statoverride --list "${SWTPM_DIR}" >/dev/null 2>&1; then
        [ ! -e "${SWTPM_DIR}" ] || chown swtpm:swtpm "${SWTPM_DIR}"
        [ ! -e "${SWTPM_DIR}" ] || chmod 0700 "${SWTPM_DIR}"
    fi
}

case "$1" in
    configure)
        add_users_groups
        add_statoverrides

        # Make sure the directories don't get removed on package removal since
        # logrotate chokes otherwise.
        for dir in qemu uml lxc; do
            touch /var/log/libvirt/"${dir}"/.placeholder
        done
        # Remove left over empty directory from pre 1.2.7
        [ ! -d /etc/apparmor.d/libvirtd ] || rmdir --ignore-fail-on-non-empty /etc/apparmor.d/libvirtd

        # Force virtlogd and virtlockd to reexec if enabled
        if [ -d /run/systemd/system ]; then
            if systemctl is-active -q virtlogd; then
                systemctl reload virtlogd
            fi
            if systemctl is-active -q virtlockd; then
                systemctl reload virtlockd
            fi
        fi

        # Force refresh of capabilities (#731815)
        rm -f /var/cache/libvirt/qemu/capabilities/*.xml

        # dh_apparmor can't work with dir/file profile filenames yet (#979500)
        # Also we don't want the reload section of dh_apparmor. Just the
        # install of an empty include.
        ABSTRACTIONS_DIR="/etc/apparmor.d/abstractions"
        LOCAL_ABSTRACTIONS_DIR="/etc/apparmor.d/local/abstractions"
        LIBVIRT_ABSTRACTIONS="libvirt-lxc libvirt-qemu"

        for name in $LIBVIRT_ABSTRACTIONS; do
            abstraction="$ABSTRACTIONS_DIR/$name"
            local_abstraction="$LOCAL_ABSTRACTIONS_DIR/$name"

            if [ -e "$abstraction" ] && [ ! -e "$local_abstraction" ]; then
                mkdir -p "$LOCAL_ABSTRACTIONS_DIR"
                install -m 0644 /dev/null "$local_abstraction"
            fi
        done

        # On an initial package install, create the default network autostart
        # symlink if on a system that it will work on.
        if [ -z $2 ]; then
            maybe_set_autostart
        fi
    ;;

    abort-upgrade|abort-remove|abort-deconfigure)
    ;;

    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac

db_stop

# Automatically added by dh_apparmor/3.0.4-2ubuntu2.4
if [ "$1" = "configure" ]; then
    APP_PROFILE="/etc/apparmor.d/usr.lib.libvirt.virt-aa-helper"
    if [ -f "$APP_PROFILE" ]; then
        # Add the local/ include
        LOCAL_APP_PROFILE="/etc/apparmor.d/local/usr.lib.libvirt.virt-aa-helper"

        test -e "$LOCAL_APP_PROFILE" || {
            mkdir -p `dirname "$LOCAL_APP_PROFILE"`
            install --mode 644 /dev/null "$LOCAL_APP_PROFILE"
        }

        # Reload the profile, including any abstraction updates
        if aa-enabled --quiet 2>/dev/null; then
            apparmor_parser -r -T -W "$APP_PROFILE" || true
        fi
    fi
fi
# End automatically added section
# Automatically added by dh_apparmor/3.0.4-2ubuntu2.4
if [ "$1" = "configure" ]; then
    APP_PROFILE="/etc/apparmor.d/usr.sbin.libvirtd"
    if [ -f "$APP_PROFILE" ]; then
        # Add the local/ include
        LOCAL_APP_PROFILE="/etc/apparmor.d/local/usr.sbin.libvirtd"

        test -e "$LOCAL_APP_PROFILE" || {
            mkdir -p `dirname "$LOCAL_APP_PROFILE"`
            install --mode 644 /dev/null "$LOCAL_APP_PROFILE"
        }

        # Reload the profile, including any abstraction updates
        if aa-enabled --quiet 2>/dev/null; then
            apparmor_parser -r -T -W "$APP_PROFILE" || true
        fi
    fi
fi
# End automatically added section
# Automatically added by dh_installdeb/13.6ubuntu1
dpkg-maintscript-helper rm_conffile /etc/init.d/libvirt-guests 5.6.0-3\~ libvirt-daemon-system -- "$@"
dpkg-maintscript-helper rm_conffile /etc/init.d/libvirtd 5.6.0-3\~ libvirt-daemon-system -- "$@"
dpkg-maintscript-helper rm_conffile /etc/init.d/virtlogd 5.6.0-3\~ libvirt-daemon-system -- "$@"
dpkg-maintscript-helper rm_conffile /etc/logrotate.d/libvirtd.uml 5.0.0-2\~ -- "$@"
# End automatically added section
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'libvirtd.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'libvirtd.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'libvirtd.service' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'libvirtd.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -d /run/systemd/system ]; then
		systemctl --system daemon-reload >/dev/null || true
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		deb-systemd-invoke $_dh_action 'libvirtd.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'libvirt-guests.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'libvirt-guests.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'libvirt-guests.service' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'libvirt-guests.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'virtlockd.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'virtlockd.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'virtlockd.service' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'virtlockd.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'virtlogd.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'virtlogd.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'virtlogd.service' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'virtlogd.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "${DPKG_ROOT:-}" ] && [ -d /run/systemd/system ]; then
		systemctl --system daemon-reload >/dev/null || true
		deb-systemd-invoke start 'libvirt-guests.service' 'virtlockd.service' 'virtlogd.service' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'libvirtd-admin.socket' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'libvirtd-admin.socket'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'libvirtd-admin.socket' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'libvirtd-admin.socket' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'libvirtd-ro.socket' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'libvirtd-ro.socket'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'libvirtd-ro.socket' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'libvirtd-ro.socket' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'libvirtd.socket' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'libvirtd.socket'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'libvirtd.socket' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'libvirtd.socket' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'virtlockd-admin.socket' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'virtlockd-admin.socket'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'virtlockd-admin.socket' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'virtlockd-admin.socket' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'virtlockd.socket' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'virtlockd.socket'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'virtlockd.socket' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'virtlockd.socket' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'virtlogd-admin.socket' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'virtlogd-admin.socket'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'virtlogd-admin.socket' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'virtlogd-admin.socket' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# This will only remove masks created by d-s-h on package removal.
	deb-systemd-helper unmask 'virtlogd.socket' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'virtlogd.socket'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'virtlogd.socket' >/dev/null || true
	else
		# Update the statefile to add new symlinks (if any), which need to be
		# cleaned up on purge. Also remove old symlinks.
		deb-systemd-helper update-state 'virtlogd.socket' >/dev/null || true
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "${DPKG_ROOT:-}" ] && [ -d /run/systemd/system ]; then
		systemctl --system daemon-reload >/dev/null || true
		deb-systemd-invoke start 'libvirtd-admin.socket' 'libvirtd-ro.socket' 'libvirtd.socket' 'virtlockd-admin.socket' 'virtlockd.socket' 'virtlogd-admin.socket' 'virtlogd.socket' >/dev/null || true
	fi
fi
# End automatically added section


# We need this after the debhelper generated code so that dpkg-maintscript
# can do its renamming first.
if [ "$1" = "configure" ]; then
    # Configure dnsmasq
    if [ -f /etc/dnsmasq.d-available/libvirt-daemon ]; then
        echo "Setting up libvirt-daemon dnsmasq configuration."
        mkdir -p /etc/dnsmasq.d
        if [ ! -e /etc/dnsmasq.d/libvirt-daemon ]; then
            ln -s /etc/dnsmasq.d-available/libvirt-daemon \
                  /etc/dnsmasq.d/libvirt-daemon
        fi

        # Try to restart a potential system wide dnsmasq
        invoke-rc.d dnsmasq restart 2>/dev/null || true
    fi
fi

exit 0