#!/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

delete_protective_diversion() {
    local usrfile="$1"
    local firstver="$2"

    if [ "$3" != "--" ]; then
        echo "delete_protective_diversion called with the wrong number of arguments" >&2
        return 1
    fi
    for _ in $(seq 1 3); do
        shift
    done

    # If the diversion doesn't exist there's nothing to clean up
    if [ -z "$(dpkg-divert --list "$usrfile")" ]; then
        return 0
    fi

    dpkg-divert \
        --no-rename \
        --divert "$usrfile.usr-is-merged" \
        --remove "$usrfile"
}

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

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

    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
}

DAEMON_COMMON_UNITS="
    libvirt-guests.service
    virt-guest-shutdown.target
"

case "$1" in
    configure)
        add_users_groups
        add_statoverrides

        # Obsolete UML stuff included until 9.0.0-1
        rm -f /var/log/libvirt/uml/.placeholder
        if [ -d /var/log/libvirt/uml ]; then
            rmdir --ignore-fail-on-non-empty /var/log/libvirt/uml
        fi

        for unit in $DAEMON_COMMON_UNITS; do
            delete_protective_diversion \
                "/lib/systemd/system/$unit" \
                "10.6.0-3~" \
                -- \
                "$@"
        done
    ;;

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

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

# Automatically added by dh_apparmor/4.1.0-1
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_installinit/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -x "/etc/init.d/libvirt-guests" ]; then
		update-rc.d libvirt-guests defaults >/dev/null || exit 1
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.24.2
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	# The following line should be removed in trixie or trixie+1
	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/13.24.2
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' >/dev/null || true
	fi
fi
# End automatically added section


exit 0