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#!/usr/bin/env bash
# group: rw auto quick
#
# Test invalid backing file format in qcow2 images
#
# 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=kwolf@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
_supported_fmt qcow2
_supported_proto generic
# At least OpenBSD doesn't seem to have truncate
_supported_os Linux
# qcow2.py does not work too well with external data files
_unsupported_imgopts data_file
# Older qemu-img could set up backing file without backing format; modern
# qemu can't but we can use qcow2.py to simulate older files.
truncate -s $((64 * 1024 * 1024)) "$TEST_IMG.orig"
_make_test_img -b "$TEST_IMG.orig" -F raw 64M
$PYTHON qcow2.py "$TEST_IMG" del-header-ext 0xE2792ACA
TEST_IMG="$TEST_IMG.base" _make_test_img 64M
$QEMU_IMG convert -O qcow2 -B "$TEST_IMG.orig" "$TEST_IMG.orig" "$TEST_IMG"
_make_test_img -b "$TEST_IMG.base" -F $IMGFMT 64M
_make_test_img -u -b "$TEST_IMG.base" -F $IMGFMT 64M
# Set an invalid backing file format
$PYTHON qcow2.py "$TEST_IMG" add-header-ext 0xE2792ACA "foo"
_img_info
# Try opening the image. Should fail (and not probe) in the first case, but
# overriding the backing file format should be possible.
$QEMU_IO -c "open $TEST_IMG" -c "read 0 4k" 2>&1 | _filter_qemu_io | _filter_testdir
$QEMU_IO -c "open -o backing.driver=$IMGFMT $TEST_IMG" -c "read 0 4k" | _filter_qemu_io
# Rebase the image, to show that backing format is required.
($QEMU_IMG rebase -u -b "$TEST_IMG.base" "$TEST_IMG" 2>&1 && echo "unexpected pass") | _filter_testdir
$QEMU_IMG rebase -u -b "$TEST_IMG.base" -F $IMGFMT "$TEST_IMG"
$QEMU_IO -c "open $TEST_IMG" -c "read 0 4k" 2>&1 | _filter_qemu_io | _filter_testdir
# success, all done
echo '*** done'
rm -f $seq.full
status=0
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