57284d2ada
Many tests (that do not support generic protocols) can run just fine with FUSE-exported images, so allow them to. Note that this is no attempt at being definitely complete. There are some tests that might be modified to run on FUSE, but this patch still skips them. This patch only tries to pick the rather low-hanging fruits. Note that 221 and 250 only pass when .lseek is correctly implemented, which is only possible with a libfuse that is 3.8 or newer. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201027190600.192171-20-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
144 lines
3.9 KiB
Bash
Executable File
144 lines
3.9 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
#
|
|
# Test case for repairing qcow2 images which cannot be repaired using
|
|
# the on-disk refcount structures
|
|
#
|
|
# Copyright (C) 2014 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"
|
|
|
|
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 qcow2-specific low-level functionality
|
|
_supported_fmt qcow2
|
|
_supported_proto file fuse
|
|
_supported_os Linux
|
|
# This test directly modifies a refblock so it relies on refcount_bits being 16;
|
|
# and the low-level modification it performs are not tuned for external data
|
|
# files
|
|
_unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)' data_file
|
|
|
|
echo
|
|
echo '=== Repairing an image without any refcount table ==='
|
|
echo
|
|
|
|
_make_test_img 64M
|
|
# just write some data
|
|
$QEMU_IO -c 'write -P 42 0 64k' "$TEST_IMG" | _filter_qemu_io
|
|
|
|
# refcount_table_offset
|
|
poke_file "$TEST_IMG" $((0x30)) "\x00\x00\x00\x00\x00\x00\x00\x00"
|
|
# refcount_table_clusters
|
|
poke_file "$TEST_IMG" $((0x38)) "\x00\x00\x00\x00"
|
|
|
|
_check_test_img -r all
|
|
|
|
$QEMU_IO -c 'read -P 42 0 64k' "$TEST_IMG" | _filter_qemu_io
|
|
|
|
echo
|
|
echo '=== Repairing unreferenced data cluster in new refblock area ==='
|
|
echo
|
|
|
|
_make_test_img -o 'cluster_size=512' 64M
|
|
# Allocate the first 128 kB in the image (first refblock)
|
|
$QEMU_IO -c 'write 0 0x1b200' "$TEST_IMG" | _filter_qemu_io
|
|
# should be 131072 == 0x20000
|
|
stat -c '%s' "$TEST_IMG"
|
|
|
|
# Enter a cluster at 128 kB (0x20000)
|
|
# XXX: This should be the first free entry in the last L2 table, but we cannot
|
|
# be certain
|
|
poke_file "$TEST_IMG" $((0x1ccc8)) "\x80\x00\x00\x00\x00\x02\x00\x00"
|
|
|
|
# Fill the cluster
|
|
truncate -s $((0x20200)) "$TEST_IMG"
|
|
$QEMU_IO -c "open -o driver=raw $TEST_IMG" -c 'write -P 42 128k 512' \
|
|
| _filter_qemu_io
|
|
|
|
# The data should now appear at this guest offset
|
|
$QEMU_IO -c 'read -P 42 0x1b200 512' "$TEST_IMG" | _filter_qemu_io
|
|
|
|
# This cluster is unallocated; fix it
|
|
_check_test_img -r all
|
|
|
|
# This repair operation must have allocated a new refblock; and that refblock
|
|
# should not overlap with the unallocated data cluster. If it does, the data
|
|
# will be damaged, so check it.
|
|
$QEMU_IO -c 'read -P 42 0x1b200 512' "$TEST_IMG" | _filter_qemu_io
|
|
|
|
echo
|
|
echo '=== Repairing refblock beyond the image end ==='
|
|
echo
|
|
|
|
echo
|
|
echo '--- Otherwise clean ---'
|
|
echo
|
|
|
|
_make_test_img 64M
|
|
# Normally, qemu doesn't create empty refblocks, so we just have to do it by
|
|
# hand
|
|
# XXX: This should be the entry for the second refblock
|
|
poke_file "$TEST_IMG" $((0x10008)) "\x00\x00\x00\x00\x00\x10\x00\x00"
|
|
# Mark that refblock as used
|
|
# XXX: This should be the 17th entry (cluster 16) of the first
|
|
# refblock
|
|
poke_file "$TEST_IMG" $((0x20020)) "\x00\x01"
|
|
_check_test_img -r all
|
|
|
|
echo
|
|
echo '--- Refblock is unallocated ---'
|
|
echo
|
|
|
|
_make_test_img 64M
|
|
poke_file "$TEST_IMG" $((0x10008)) "\x00\x00\x00\x00\x00\x10\x00\x00"
|
|
_check_test_img -r all
|
|
|
|
echo
|
|
echo '--- Signed overflow after the refblock ---'
|
|
echo
|
|
|
|
_make_test_img 64M
|
|
poke_file "$TEST_IMG" $((0x10008)) "\x7f\xff\xff\xff\xff\xff\x00\x00"
|
|
_check_test_img -r all
|
|
|
|
echo
|
|
echo '--- Unsigned overflow after the refblock ---'
|
|
echo
|
|
|
|
_make_test_img 64M
|
|
poke_file "$TEST_IMG" $((0x10008)) "\xff\xff\xff\xff\xff\xff\x00\x00"
|
|
_check_test_img -r all
|
|
|
|
# success, all done
|
|
echo '*** done'
|
|
rm -f $seq.full
|
|
status=0
|