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1#!/usr/bin/env bash 2# group: rw auto quick 3# 4# Test invalid backing file format in qcow2 images 5# 6# Copyright (C) 2014 Red Hat, Inc. 7# 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. 12# 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. 17# 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/>. 20# 21 22# creator 23owner=kwolf@redhat.com 24 25seq="$(basename $0)" 26echo "QA output created by $seq" 27 28status=1 # failure is the default! 29 30_cleanup() 31{ 32 _cleanup_test_img 33} 34trap "_cleanup; exit \$status" 0 1 2 3 15 35 36# get standard environment, filters and checks 37. ./common.rc 38. ./common.filter 39 40_supported_fmt qcow2 41_supported_proto generic 42# At least OpenBSD doesn't seem to have truncate 43_supported_os Linux 44# qcow2.py does not work too well with external data files 45_unsupported_imgopts data_file 46 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. 49truncate -s $((64 * 1024 * 1024)) "$TEST_IMG.orig" 50_make_test_img -b "$TEST_IMG.orig" -F raw 64M 51$PYTHON qcow2.py "$TEST_IMG" del-header-ext 0xE2792ACA 52 53TEST_IMG="$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 $IMGFMT 64M 57 58# Set an invalid backing file format 59$PYTHON qcow2.py "$TEST_IMG" add-header-ext 0xE2792ACA "foo" 60_img_info 61 62# Try opening the image. Should fail (and not probe) in the first case, but 63# overriding the backing file format should be possible. 64$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 $TEST_IMG" -c "read 0 4k" | _filter_qemu_io 66 67# Rebase the image, to show that backing format is required. 68($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 71 72# success, all done 73echo '*** done' 74rm -f $seq.full 75status=0