From 25a07e29651d771c6d86ab94ea9489f7475c5b48 Mon Sep 17 00:00:00 2001
From: =?utf-8?q?Ville=20Skytt=C3=A4?= <ville.skytta@iki.fi>
Date: Sun, 11 Jan 2009 11:50:11 +0100
Subject: [PATCH] Get rid of /usr/bin/cmp dependency

Looks like it would be easy to get rid of the diffutils dependency in grub,
patch attached.

More discussion at
http://www.redhat.com/archives/fedora-devel-list/2008-January/msg02881.html

Bug Report: https://bugzilla.redhat.com/show_bug.cgi?id=431351
---
 util/grub-install.in |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/util/grub-install.in b/util/grub-install.in
index 5ceb77d..24e4490 100644
--- a/util/grub-install.in
+++ b/util/grub-install.in
@@ -597,9 +597,14 @@ for file in ${grubdir}/stage1 ${grubdir}/stage2 ${grubdir}/*stage1_5; do
     while test $count -gt 0; do
         dump_boot_block $root_drive $img_file
         if grep "Error [0-9]*: " $log_file >/dev/null; then
-    	:
-        elif cmp $file $img_file >/dev/null; then
-    	break
+            :
+        else
+            # Use sha1sum instead of cmp to avoid a dependency on diffutils.
+            sha1=`sha1sum $file | cut -d' ' -f 1`
+            sha2=`sha1sum $img_file | cut -d' ' -f 1`
+            if test -f $file -a -f $img_file -a "$sha1" = "$sha2"; then
+                break
+            fi
         fi
         sleep 1
         count=`expr $count - 1`    
-- 
1.5.5.6