test_description="check that we cant append a bad undo file"
if test -x $RESIZE2FS_EXE -a -x $E2UNDO_EXE; then

TDB_FILE=${TMPDIR:-/tmp}/resize2fs-$(basename $TMPFILE).e2undo
OUT=$test_name.log
rm -f $TDB_FILE >/dev/null 2>&1
fail=0

echo check that we cant append a bad undo file > $OUT

dd if=/dev/zero of=$TMPFILE bs=1k count=512 > /dev/null 2>&1
crc0=`$CRCSUM $TMPFILE`
echo $CRCSUM before mke2fs $crc0 >> $OUT

CONF=$TMPFILE.conf
cat > $CONF << ENDL
[fs_types]
	ext4h = {
		features = has_journal,extent,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize,sparse_super,filetype,dir_index,ext_attr,resize_inode
		blocksize = 4096
		inode_size = 256
		make_hugefiles = true
		hugefiles_dir = /
		hugefiles_slack = 0
		hugefiles_name = aaaaa
		hugefiles_digits = 4
		hugefiles_size = 1M
		zero_hugefiles = false
	}
ENDL

echo mke2fs -q -F -o Linux -T ext4h -O ^metadata_csum,^64bit -E lazy_itable_init=1 -b 4096 -z $TDB_FILE.0 $TMPFILE 524288 >> $OUT
MKE2FS_CONFIG=$CONF $MKE2FS -q -F -o Linux -T ext4h -O ^metadata_csum,^64bit -E lazy_itable_init=1 -b 4096 -z $TDB_FILE.0 $TMPFILE >> $OUT 2>&1
crc1=`$CRCSUM $TMPFILE`
echo $CRCSUM after mke2fs $crc1 >> $OUT
features="$($DUMPE2FS -h $TMPFILE 2> /dev/null | grep 'Filesystem features:')"
if [ "$(echo "${features}" | grep "metadata_csum" -c)" -gt 0 ] || [ "$(echo "${features}" | grep 64bit -c)" -gt 0 ]; then
	echo "FS features: ${features}" >> $OUT
	echo "Should not have 64bit or metadata_csum set" >> $OUT
	fail=1
fi
$FSCK -f -n $TMPFILE >> $OUT 2>&1 || fail=1

echo using resize2fs to test e2undo >> $OUT
$RESIZE2FS -z $TDB_FILE.1 -b $TMPFILE >> $OUT 2>&1
crc2=`$CRCSUM $TMPFILE`
echo $CRCSUM after resize2fs $crc2 >> $OUT
features="$($DUMPE2FS -h $TMPFILE 2> /dev/null | grep 'Filesystem features:')"
if [ "$(echo "${features}" | grep "metadata_csum" -c)" -gt 0 ] || [ "$(echo "${features}" | grep 64bit -c)" -lt 1 ]; then
	echo "FS features: ${features}" >> $OUT
	echo "Should have 64bit but not metadata_csum set" >> $OUT
	fail=1
fi
$FSCK -f -n $TMPFILE >> $OUT 2>&1 || fail=1

echo corrupt $TDB_FILE.1 >> $OUT
dd if=/dev/zero of=$TDB_FILE.1 bs=4096 count=1 skip=1 2> /dev/null

echo using tune2fs to test e2undo >> $OUT
$TUNE2FS -O metadata_csum -z $TDB_FILE.1 $TMPFILE >> $OUT 2>&1
crc3=`$CRCSUM $TMPFILE`
echo $CRCSUM after tune2fs $crc3 >> $OUT
features="$($DUMPE2FS -h $TMPFILE 2> /dev/null | grep 'Filesystem features:')"
if [ "$(echo "${features}" | grep "metadata_csum" -c)" -gt 0 ] || [ "$(echo "${features}" | grep 64bit -c)" -lt 1 ]; then
	echo "FS features: ${features}" >> $OUT
	echo "Should have 64bit but not metadata_csum set" >> $OUT
	fail=1
fi
$FSCK -f -n $TMPFILE >> $OUT 2>&1 || fail=1

echo using e2fsck to test e2undo >> $OUT
$FSCK -f -y -D -z $TDB_FILE.1 $TMPFILE >> $OUT 2>&1
crc4=`$CRCSUM $TMPFILE`
echo $CRCSUM after e2fsck $crc4 >> $OUT
features="$($DUMPE2FS -h $TMPFILE 2> /dev/null | grep 'Filesystem features:')"
if [ "$(echo "${features}" | grep "metadata_csum" -c)" -gt 0 ] || [ "$(echo "${features}" | grep 64bit -c)" -lt 1 ]; then
	echo "FS features: ${features}" >> $OUT
	echo "Should have 64bit but not metadata_csum set" >> $OUT
	fail=1
fi
$FSCK -f -n $TMPFILE >> $OUT 2>&1 || fail=1

echo roll back e2fsck/tune2fs/resize2fs >> $OUT
$E2UNDO $TDB_FILE.1 $TMPFILE  >> $OUT 2>&1
crc1_2=`$CRCSUM $TMPFILE`
echo $CRCSUM after e2undo e2fsck/tune2fs/resize2fs $crc1_2 >> $OUT
features="$($DUMPE2FS -h $TMPFILE 2> /dev/null | grep 'Filesystem features:')"
if [ "$(echo "${features}" | grep "metadata_csum" -c)" -gt 0 ] || [ "$(echo "${features}" | grep 64bit -c)" -lt 1 ]; then
	echo "FS features: ${features}" >> $OUT
	echo "Should have 64bit but not metadata_csum set" >> $OUT
	fail=1
fi
$FSCK -f -n $TMPFILE >> $OUT 2>&1 || fail=1

echo roll back mke2fs >> $OUT
$E2UNDO $TDB_FILE.0 $TMPFILE  >> $OUT 2>&1
crc0_2=`$CRCSUM $TMPFILE`
echo $CRCSUM after e2undo mke2fs $crc0_2 >> $OUT
features="$($DUMPE2FS -h $TMPFILE 2> /dev/null | grep 'Filesystem features:')"
if [ "$(echo "${features}" | grep "metadata_csum" -c)" -gt 0 ] || [ "$(echo "${features}" | grep 64bit -c)" -lt 1 ]; then
	echo "FS features: ${features}" >> $OUT
	echo "Should have 64bit but not metadata_csum set" >> $OUT
	fail=1
fi
$FSCK -f -n $TMPFILE >> $OUT 2>&1 || fail=1

if [ $fail -eq 0 ] && [ $crc0 != $crc1 ] && [ $crc1 != $crc2 ] && [ $crc2 = $crc3 ] && [ $crc3 = $crc4 ] && [ $crc1_2 = $crc2 ] && [ $crc0_2 = $crc2 ]; then
	echo "$test_name: $test_description: ok"
	touch $test_name.ok
else
	ln -f $test_name.log $test_name.failed
	echo "$test_name: $test_description: failed"
fi
rm -f $TDB_FILE.0 $TDB_FILE.1 $TMPFILE $CONF
fi