#!/bin/sh
# postinst script for grml-rescueboot
-#
-# 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 http://www.debian.org/doc/debian-policy/ or
-# the debian-policy package
+update_grub_wrapper() {
+ # default, unless configured otherwise:
+ ISO_LOCATION=/boot/grml
+ if [ -r /etc/default/grml-rescueboot ] ; then
+ . /etc/default/grml-rescueboot
+ fi
+
+ if ! ls "${ISO_LOCATION}"/*iso >/dev/null 2>&1 ; then
+ echo "INFO: No *.iso files found inside ${ISO_LOCATION}."
+ echo "INFO: Please create ${ISO_LOCATION} and place rescue ISO(s) there."
+ echo "INFO: Finally invoke update-grub and enjoy your rescue system."
+ return 0
+ fi
+
+ if ! which update-grub >/dev/null 2>&1; then
+ echo "WARN: ISOs found inside ${ISO_LOCATION} but update-grub not present (huh?)"
+ return 0
+ fi
+
+ if ! [ -e /boot/grub/grub.cfg ] ; then
+ echo "WARN: ISOs found inside ${ISO_LOCATION} but /boot/grub/grub.cfg does not exist."
+ echo "WARN: Ignoring request to run update-grub to avoid possible boot loader problems."
+ return 0
+ fi
+
+ echo "INFO: ISOs found inside ${ISO_LOCATION}, invoking update-grub:"
+ update-grub
+}
case "$1" in
configure)
- /usr/sbin/update-grub
+ update_grub_wrapper
;;
abort-upgrade|abort-remove|abort-deconfigure)
;;
esac
-# dh_installdeb will replace this with shell code automatically
-# generated by other debhelper scripts.
-
#DEBHELPER#
exit 0