#! /bin/sh

set -e

update_param() {
	. "$INITCONFFILE"
        # shellcheck disable=SC2086
        eval old=\"'$'$1\"
        # shellcheck disable=SC2086
        eval new=\"'$'new_$1\"

        if test "${old-}" = "${new-}"; then
                return
        fi

        if test -z "$old"; then
                grep -Eq "^ *$1=" "$INITCONFFILE" || echo "$1=" \
                       >> "$INITCONFFILE"
        fi

	sed -e "s/^ *$1=.*/$1=$new/" < "$INITCONFFILE" > "$INITCONFFILE.$$"
	mv -f "$INITCONFFILE.$$" "$INITCONFFILE"
}

ZIPL_CONFFILE="/etc/zipl.conf"

update_zipl() {

	if [ ! -f "${ZIPL_CONFFILE}" ]; then
		return;
	fi

	TMPCONF=$(mktemp)
	cp "${ZIPL_CONFFILE}" "${TMPCONF}"

	CRASHKERNEL="${1}"
	HAS_CRASHKERNEL="$(grep -q crashkernel "${TMPCONF}")" || true

	if test -z "${HAS_CRASHKERNEL}"; then
		sed -i "s|^\\s*parameters\\s*=\\s*\"\\?|&crashkernel=${CRASHKERNEL} |" "${TMPCONF}"
	else
		sed -i "s/crashkernel=[^[:space:]\"]*/crashkernel=${CRASHKERNEL}/" "${TMPCONF}"
	fi

	ucf --debconf-ok "${TMPCONF}" "${ZIPL_CONFFILE}"
	rm -f "${TMPCONF}"

	if [ -e /usr/sbin/zipl ]; then
		/usr/sbin/zipl
	fi
}

# 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>
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package

case "$1" in
    configure)
# ------------------------- Debconf questions start ---------------------
	# Handle debconf
	. /usr/share/debconf/confmodule
	db_get kdump-tools/use_kdump || RET=true
	if [ "${RET}" = "true" ]; then
		# new_USE_KDUMP is used in update_param
		# shellcheck disable=SC2034
		new_USE_KDUMP="1"
	else
		# shellcheck disable=SC2034
		new_USE_KDUMP="0"
	fi
# ------------------------- Debconf questions end ---------------------

	INITCONFFILE=$(mktemp /etc/default/kdump-tools.XXXXXX)
	cp -pf /usr/share/kdump-tools/kdump-tools.conf "$INITCONFFILE"
	update_param USE_KDUMP

	# Customize crashkernel= value according to architecture
	ARCH="$(arch)"
	case "$ARCH" in
		s390x)
			CRASHKERNEL="2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M"
			update_zipl "${CRASHKERNEL}"
			CIO_IGNORE="$(cio_ignore -u -k)"
			sed -i "s/\\#KDUMP_CMDLINE_APPEND/KDUMP_CMDLINE_APPEND/" "$INITCONFFILE"
			sed -i "/KDUMP_CMDLINE_APPEND/{s|\"$| ${CIO_IGNORE}\"|}" "$INITCONFFILE"
		;;
	esac

	ucfr kdump-tools /etc/default/kdump-tools
	UCF_FORCE_CONFFMISS=1 ucf --debconf-ok "$INITCONFFILE" /etc/default/kdump-tools
	rm -f "$INITCONFFILE"
	sync /etc/default/kdump-tools
    ;;

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

    ;;

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

if command -v update-grub > /dev/null && [ -e /boot/grub/grub.cfg ]; then
	update-grub
fi

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

# Automatically added by dh_installdeb/13.6ubuntu1
dpkg-maintscript-helper mv_conffile /etc/default/grub.d/kdump-tools.default /etc/default/grub.d/kdump-tools.cfg 1:1.6.1-2\~ kdump-tools -- "$@"
dpkg-maintscript-helper rm_conffile /etc/default/grub.d/kdump-tools..ppc64el 1:1.6.1-2\~ kdump-tools -- "$@"
# End automatically added section
# Automatically added by dh_installinit/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
	if [ -z "${DPKG_ROOT:-}" ] && [ -x "/etc/init.d/kdump-tools" ]; then
		update-rc.d kdump-tools defaults >/dev/null
		if [ -n "$2" ]; then
			_dh_action=restart
		else
			_dh_action=start
		fi
		invoke-rc.d --skip-systemd-native kdump-tools $_dh_action || exit 1
	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 'kdump-tools.service' >/dev/null || true

	# was-enabled defaults to true, so new installations run enable.
	if deb-systemd-helper --quiet was-enabled 'kdump-tools.service'; then
		# Enables the unit on first installation, creates new
		# symlinks on upgrades if the unit file has changed.
		deb-systemd-helper enable 'kdump-tools.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 'kdump-tools.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 'kdump-tools-dump.service' 'kdump-tools.service' >/dev/null || true
	fi
fi
# End automatically added section


exit 0