1#!/usr/bin/env bash 2# 3# Test invalid backing file format in qcow2 images 4# 5# Copyright (C) 2014 Red Hat, Inc. 6# 7# This program is free software; you can redistribute it and/or modify 8# it under the terms of the GNU General Public License as published by 9# the Free Software Foundation; either version 2 of the License, or 10# (at your option) any later version. 11# 12# This program is distributed in the hope that it will be useful, 13# but WITHOUT ANY WARRANTY; without even the implied warranty of 14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15# GNU General Public License for more details. 16# 17# You should have received a copy of the GNU General Public License 18# along with this program. If not, see <http://www.gnu.org/licenses/>. 19# 20 21# creator 22owner=kwolf@redhat.com 23 24seq="$(basename $0)" 25echo "QA output created by $seq" 26 27status=1 # failure is the default! 28 29_cleanup() 30{ 31 _cleanup_test_img 32} 33trap "_cleanup; exit \$status" 0 1 2 3 15 34 35# get standard environment, filters and checks 36. ./common.rc 37. ./common.filter 38 39_supported_fmt qcow2 40_supported_proto generic 41# At least OpenBSD doesn't seem to have truncate 42_supported_os Linux 43# qcow2.py does not work too well with external data files 44_unsupported_imgopts data_file 45 46# Intentionally specify backing file without backing format; demonstrate 47# the difference in warning messages when backing file could be probed. 48# Note that only a non-raw probe result will affect the resulting image. 49truncate -s $((64 * 1024 * 1024)) "$TEST_IMG.orig" 50_make_test_img -b "$TEST_IMG.orig" 64M 51 52TEST_IMG="$TEST_IMG.base" _make_test_img 64M 53$QEMU_IMG convert -O qcow2 -B "$TEST_IMG.orig" "$TEST_IMG.orig" "$TEST_IMG" 54_make_test_img -b "$TEST_IMG.base" 64M 55_make_test_img -u -b "$TEST_IMG.base" 64M 56 57# Set an invalid backing file format 58$PYTHON qcow2.py "$TEST_IMG" add-header-ext 0xE2792ACA "foo" 59_img_info 60 61# Try opening the image. Should fail (and not probe) in the first case, but 62# overriding the backing file format should be possible. 63$QEMU_IO -c "open $TEST_IMG" -c "read 0 4k" 2>&1 | _filter_qemu_io | _filter_testdir 64$QEMU_IO -c "open -o backing.driver=$IMGFMT $TEST_IMG" -c "read 0 4k" | _filter_qemu_io 65 66# Rebase the image, to show that omitting backing format triggers a warning, 67# but probing now lets us use the backing file. 68$QEMU_IMG rebase -u -b "$TEST_IMG.base" "$TEST_IMG" 69$QEMU_IO -c "open $TEST_IMG" -c "read 0 4k" 2>&1 | _filter_qemu_io | _filter_testdir 70 71# success, all done 72echo '*** done' 73rm -f $seq.full 74status=0 75