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Filename : qemu-guest-agent.postinst
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#!/bin/sh
# postinst script for qemu-guest-agent
#
# see: dh_installdeb(1)

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


case "$1" in
    configure)
    ;;

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

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

# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.

# Automatically added by dh_installinit/13.31ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "$DPKG_ROOT" ] && [ -x "/etc/init.d/qemu-guest-agent" ]; then
		update-rc.d qemu-guest-agent defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d --skip-systemd-native qemu-guest-agent $_dh_action || exit 1
	fi
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.31ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if deb-systemd-helper debian-installed 'qemu-guest-agent.service'; then
		# The following line should be removed in trixie or trixie+1
		deb-systemd-helper unmask 'qemu-guest-agent.service' >/dev/null || true

		if deb-systemd-helper --quiet was-enabled 'qemu-guest-agent.service'; then
			# Create new symlinks, if any.
			deb-systemd-helper enable 'qemu-guest-agent.service' >/dev/null || true
		fi
	fi

	# 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 'qemu-guest-agent.service' >/dev/null || true
fi
# End automatically added section
# Automatically added by dh_installsystemd/13.31ubuntu1
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 'qemu-guest-agent.service' >/dev/null || true
	fi
fi
# End automatically added section


# Normal mv_conffile alone would fail due to the new path being a DIR in the old package version (LP: 1820291)
case "$1" in
    configure)
        # From /usr/bin/dpkg-maintscript-helper modified to be able to cope with this edge case
        if [ -n "$2" ] && dpkg --compare-versions -- "$2" le-nl "1:3.1+dfsg-7~"; then
            TMPCONFFILE="/etc/qemu/fsfreeze-hook.old"
            NEWCONFFILE="/etc/qemu/fsfreeze-hook"
            ORIGCONFFILE="/etc/qemu/fsfreeze-hook/fsfreeze-hook"
            rm -f "$TMPCONFFILE.dpkg-remove"
            if [ -e "$TMPCONFFILE" ]; then
                echo "Preserving user changes to $NEWCONFFILE (renamed from $ORIGCONFFILE)..."
                if [ -e "$NEWCONFFILE" ]; then
                    mv -f "$NEWCONFFILE" "$NEWCONFFILE.dpkg-new"
                fi
                mv -f "$TMPCONFFILE" "$NEWCONFFILE"
            fi
        fi
        # Trigger udev rule to start the qemu-guest-agent systemd service
        if command -v udevadm >/dev/null 2>&1; then
            udevadm trigger --subsystem-match=virtio-ports --attr-match=name=org.qemu.guest_agent.0 || true
        fi
        ;;
esac

exit 0