2c78857bf6
When opening/creating images, propagating errors instead of immediately emitting them on occurrence results in errors generally being printed on a single line rather than being split up into multiple ones. This in turn requires adjustments to some test results. Also, test 060 used a sed to filter out the test image directory and format by removing everything from the affected line after a certain keyword; this now also removes the error message itself, which can be fixed by using _filter_testdir and _filter_imgfmt. Finally, _make_test_img in common.rc did not filter out the test image directory etc. from stderr. This has been fixed through a redirection of stderr to stdout (which is already done in _check_test_img and _img_info). Signed-off-by: Max Reitz <mreitz@redhat.com>
112 lines
3.4 KiB
Bash
Executable File
112 lines
3.4 KiB
Bash
Executable File
#!/bin/bash
|
|
#
|
|
# Test case for image corruption (overlapping data structures) in qcow2
|
|
#
|
|
# Copyright (C) 2013 Red Hat, Inc.
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
|
|
# creator
|
|
owner=mreitz@redhat.com
|
|
|
|
seq=`basename $0`
|
|
echo "QA output created by $seq"
|
|
|
|
here=`pwd`
|
|
tmp=/tmp/$$
|
|
status=1 # failure is the default!
|
|
|
|
_cleanup()
|
|
{
|
|
_cleanup_test_img
|
|
}
|
|
trap "_cleanup; exit \$status" 0 1 2 3 15
|
|
|
|
# get standard environment, filters and checks
|
|
. ./common.rc
|
|
. ./common.filter
|
|
|
|
# This tests qocw2-specific low-level functionality
|
|
_supported_fmt qcow2
|
|
_supported_proto generic
|
|
_supported_os Linux
|
|
|
|
rt_offset=65536 # 0x10000 (XXX: just an assumption)
|
|
rb_offset=131072 # 0x20000 (XXX: just an assumption)
|
|
l1_offset=196608 # 0x30000 (XXX: just an assumption)
|
|
l2_offset=262144 # 0x40000 (XXX: just an assumption)
|
|
|
|
IMGOPTS="compat=1.1"
|
|
|
|
echo
|
|
echo "=== Testing L2 reference into L1 ==="
|
|
echo
|
|
_make_test_img 64M
|
|
# Link first L1 entry (first L2 table) onto itself
|
|
# (Note the MSb in the L1 entry is set, ensuring the refcount is one - else any
|
|
# later write will result in a COW operation, effectively ruining this attempt
|
|
# on image corruption)
|
|
poke_file "$TEST_IMG" "$l1_offset" "\x80\x00\x00\x00\x00\x03\x00\x00"
|
|
_check_test_img
|
|
|
|
# The corrupt bit should not be set anyway
|
|
./qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
|
|
|
|
# Try to write something, thereby forcing the corrupt bit to be set
|
|
$QEMU_IO -c "write -P 0x2a 0 512" "$TEST_IMG" | _filter_qemu_io
|
|
|
|
# The corrupt bit must now be set
|
|
./qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
|
|
|
|
# Try to open the image R/W (which should fail)
|
|
$QEMU_IO -c "read 0 512" "$TEST_IMG" 2>&1 | _filter_qemu_io | _filter_testdir | _filter_imgfmt
|
|
|
|
# Try to open it RO (which should succeed)
|
|
$QEMU_IO -c "read 0 512" -r "$TEST_IMG" | _filter_qemu_io
|
|
|
|
# We could now try to fix the image, but this would probably fail (how should an
|
|
# L2 table linked onto the L1 table be fixed?)
|
|
|
|
echo
|
|
echo "=== Testing cluster data reference into refcount block ==="
|
|
echo
|
|
_make_test_img 64M
|
|
# Allocate L2 table
|
|
truncate -s "$(($l2_offset+65536))" "$TEST_IMG"
|
|
poke_file "$TEST_IMG" "$l1_offset" "\x80\x00\x00\x00\x00\x04\x00\x00"
|
|
# Mark cluster as used
|
|
poke_file "$TEST_IMG" "$(($rb_offset+8))" "\x00\x01"
|
|
# Redirect new data cluster onto refcount block
|
|
poke_file "$TEST_IMG" "$l2_offset" "\x80\x00\x00\x00\x00\x02\x00\x00"
|
|
_check_test_img
|
|
./qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
|
|
$QEMU_IO -c "write -P 0x2a 0 512" "$TEST_IMG" | _filter_qemu_io
|
|
./qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
|
|
|
|
# Try to fix it
|
|
_check_test_img -r all
|
|
|
|
# The corrupt bit should be cleared
|
|
./qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
|
|
|
|
# Look if it's really really fixed
|
|
$QEMU_IO -c "write -P 0x2a 0 512" "$TEST_IMG" | _filter_qemu_io
|
|
./qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
|
|
|
|
# success, all done
|
|
echo "*** done"
|
|
rm -f $seq.full
|
|
status=0
|