From 204be9f67d7bd7e3d60c5842bf269cf55cb0d5f7 Mon Sep 17 00:00:00 2001
From: Colin Watson <cjwatson@ubuntu.com>
Date: Mon, 13 Jan 2014 12:13:03 +0000
Subject: Bail out if trying to run grub-mkconfig during upgrade to 2.00

Since files in /etc/grub.d/ are conffiles, they are not put in place
until grub-common is configured, meaning that they may be out of sync
with the parts of grub-mkconfig that reside in /usr/.  In GRUB 1.99,
/etc/grub.d/00_header contained a reference to ${GRUB_PREFIX}/video.lst.
This and other code from 1.99 breaks with 2.00's grub-mkconfig.
Deferring this to when grub-PLATFORM.postinst eventually runs is safe
and avoids this problem.

Forwarded: no
Last-Update: 2013-12-25

Patch-Name: mkconfig_mid_upgrade.patch
---
 util/grub-mkconfig.in | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/util/grub-mkconfig.in b/util/grub-mkconfig.in
index 0d7cabb..81a9afd 100644
--- a/util/grub-mkconfig.in
+++ b/util/grub-mkconfig.in
@@ -99,6 +99,13 @@ do
     esac
 done
 
+if fgrep -qs '${GRUB_PREFIX}/video.lst' "${grub_mkconfig_dir}/00_header"; then
+  echo "GRUB >= 2.00 has been unpacked but not yet configured." >&2
+  echo "grub-mkconfig will not work until the upgrade is complete." >&2
+  echo "It should run later as part of configuring the new GRUB packages." >&2
+  exit 0
+fi
+
 if [ "x$EUID" = "x" ] ; then
   EUID=`id -u`
 fi