4 # Test invalid backing file format in qcow2 images
6 # Copyright (C) 2014 Red Hat, Inc.
8 # This program is free software; you can redistribute it and/or modify
9 # it under the terms of the GNU General Public License as published by
10 # the Free Software Foundation; either version 2 of the License, or
11 # (at your option) any later version.
13 # This program is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 # GNU General Public License for more details.
18 # You should have received a copy of the GNU General Public License
19 # along with this program. If not, see <http://www.gnu.org/licenses/>.
23 owner=kwolf@redhat.com
26 echo "QA output created by $seq"
28 status=1 # failure is the default!
34 trap "_cleanup; exit \$status" 0 1 2 3 15
36 # get standard environment, filters and checks
41 _supported_proto generic
42 # At least OpenBSD doesn't seem to have truncate
44 # qcow2.py does not work too well with external data files
45 _unsupported_imgopts data_file
47 # Older qemu-img could set up backing file without backing format; modern
48 # qemu can't but we can use qcow2.py to simulate older files.
49 truncate -s $((64 * 1024 * 1024)) "$TEST_IMG.orig"
50 _make_test_img -b "$TEST_IMG.orig" -F raw 64M
51 $PYTHON qcow2.py "$TEST_IMG" del-header-ext 0xE2792ACA
53 TEST_IMG="$TEST_IMG.base" _make_test_img 64M
54 $QEMU_IMG convert -O qcow2 -B "$TEST_IMG.orig" "$TEST_IMG.orig" "$TEST_IMG"
55 _make_test_img -b "$TEST_IMG.base" -F $IMGFMT 64M
56 _make_test_img -u -b "$TEST_IMG.base" -F $IMGFMT 64M
58 # Set an invalid backing file format
59 $PYTHON qcow2.py "$TEST_IMG" add-header-ext 0xE2792ACA "foo"
62 # Try opening the image. Should fail (and not probe) in the first case, but
63 # overriding the backing file format should be possible.
64 $QEMU_IO -c "open $TEST_IMG" -c "read 0 4k" 2>&1 | _filter_qemu_io | _filter_testdir
65 $QEMU_IO -c "open -o backing.driver=$IMGFMT $TEST_IMG" -c "read 0 4k" | _filter_qemu_io
67 # Rebase the image, to show that backing format is required.
68 ($QEMU_IMG rebase -u -b "$TEST_IMG.base" "$TEST_IMG" 2>&1 && echo "unexpected pass") | _filter_testdir
69 $QEMU_IMG rebase -u -b "$TEST_IMG.base" -F $IMGFMT "$TEST_IMG"
70 $QEMU_IO -c "open $TEST_IMG" -c "read 0 4k" 2>&1 | _filter_qemu_io | _filter_testdir