1#!/bin/bash 2# 3# qcow2 format input validation tests 4# 5# Copyright (C) 2013 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 27here=`pwd` 28tmp=/tmp/$$ 29status=1 # failure is the default! 30 31_cleanup() 32{ 33 rm -f $TEST_IMG.snap 34 _cleanup_test_img 35} 36trap "_cleanup; exit \$status" 0 1 2 3 15 37 38# get standard environment, filters and checks 39. ./common.rc 40. ./common.filter 41 42_supported_fmt qcow2 43_supported_proto generic 44_supported_os Linux 45 46header_size=104 47 48offset_backing_file_offset=8 49offset_backing_file_size=16 50offset_l1_size=36 51offset_l1_table_offset=40 52offset_refcount_table_offset=48 53offset_refcount_table_clusters=56 54offset_nb_snapshots=60 55offset_snapshots_offset=64 56offset_header_size=100 57offset_ext_magic=$header_size 58offset_ext_size=$((header_size + 4)) 59 60offset_l2_table_0=$((0x40000)) 61 62offset_snap1=$((0x70000)) 63offset_snap1_l1_offset=$((offset_snap1 + 0)) 64offset_snap1_l1_size=$((offset_snap1 + 8)) 65 66echo 67echo "== Huge header size ==" 68_make_test_img 64M 69poke_file "$TEST_IMG" "$offset_header_size" "\xff\xff\xff\xff" 70{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 71poke_file "$TEST_IMG" "$offset_header_size" "\x7f\xff\xff\xff" 72{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 73 74echo 75echo "== Huge unknown header extension ==" 76_make_test_img 64M 77poke_file "$TEST_IMG" "$offset_backing_file_offset" "\xff\xff\xff\xff\xff\xff\xff\xff" 78poke_file "$TEST_IMG" "$offset_ext_magic" "\x12\x34\x56\x78" 79poke_file "$TEST_IMG" "$offset_ext_size" "\x7f\xff\xff\xff" 80{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 81poke_file "$TEST_IMG" "$offset_backing_file_offset" "\x00\x00\x00\x00\x00\x00\x00\x00" 82{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 83 84echo 85echo "== Huge refcount table size ==" 86_make_test_img 64M 87poke_file "$TEST_IMG" "$offset_refcount_table_clusters" "\xff\xff\xff\xff" 88{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 89poke_file "$TEST_IMG" "$offset_refcount_table_clusters" "\x00\x02\x00\x01" 90{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 91 92echo 93echo "== Misaligned refcount table ==" 94_make_test_img 64M 95poke_file "$TEST_IMG" "$offset_refcount_table_offset" "\x12\x34\x56\x78\x90\xab\xcd\xef" 96{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 97 98echo 99echo "== Huge refcount offset ==" 100_make_test_img 64M 101poke_file "$TEST_IMG" "$offset_refcount_table_offset" "\xff\xff\xff\xff\xff\xff\x00\x00" 102poke_file "$TEST_IMG" "$offset_refcount_table_clusters" "\x00\x00\x00\x7f" 103{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 104 105echo 106echo "== Invalid snapshot table ==" 107_make_test_img 64M 108poke_file "$TEST_IMG" "$offset_nb_snapshots" "\xff\xff\xff\xff" 109{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 110poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x7f\xff\xff\xff" 111{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 112 113poke_file "$TEST_IMG" "$offset_snapshots_offset" "\xff\xff\xff\xff\xff\xff\x00\x00" 114poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x00\x00\xff\xff" 115{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 116 117poke_file "$TEST_IMG" "$offset_snapshots_offset" "\x12\x34\x56\x78\x90\xab\xcd\xef" 118poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x00\x00\x00\x00" 119{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 120 121echo 122echo "== Hitting snapshot table size limit ==" 123_make_test_img 64M 124# Put the refcount table in a more or less safe place (16 MB) 125poke_file "$TEST_IMG" "$offset_snapshots_offset" "\x00\x00\x00\x00\x01\x00\x00\x00" 126poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x00\x01\x00\x00" 127{ $QEMU_IMG snapshot -c test $TEST_IMG; } 2>&1 | _filter_testdir 128{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 129 130echo 131echo "== Invalid L1 table ==" 132_make_test_img 64M 133poke_file "$TEST_IMG" "$offset_l1_size" "\xff\xff\xff\xff" 134{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 135poke_file "$TEST_IMG" "$offset_l1_size" "\x7f\xff\xff\xff" 136{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 137 138poke_file "$TEST_IMG" "$offset_l1_table_offset" "\x7f\xff\xff\xff\xff\xff\x00\x00" 139poke_file "$TEST_IMG" "$offset_l1_size" "\x00\x00\xff\xff" 140{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 141 142poke_file "$TEST_IMG" "$offset_l1_table_offset" "\x12\x34\x56\x78\x90\xab\xcd\xef" 143poke_file "$TEST_IMG" "$offset_l1_size" "\x00\x00\x00\x01" 144{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 145 146echo 147echo "== Invalid L1 table (with internal snapshot in the image) ==" 148_make_test_img 64M 149{ $QEMU_IMG snapshot -c foo $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 150poke_file "$TEST_IMG" "$offset_l1_size" "\x00\x00\x00\x00" 151_img_info 152 153echo 154echo "== Invalid backing file size ==" 155_make_test_img 64M 156poke_file "$TEST_IMG" "$offset_backing_file_offset" "\x00\x00\x00\x00\x00\x00\x10\x00" 157poke_file "$TEST_IMG" "$offset_backing_file_size" "\xff\xff\xff\xff" 158{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 159 160echo 161echo "== Invalid L2 entry (huge physical offset) ==" 162_make_test_img 64M 163{ $QEMU_IO -c "write 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 164poke_file "$TEST_IMG" "$offset_l2_table_0" "\xbf\xff\xff\xff\xff\xff\x00\x00" 165{ $QEMU_IMG snapshot -c test $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 166poke_file "$TEST_IMG" "$offset_l2_table_0" "\x80\x00\x00\xff\xff\xff\x00\x00" 167{ $QEMU_IMG snapshot -c test $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 168 169echo 170echo "== Invalid snapshot L1 table ==" 171_make_test_img 64M 172{ $QEMU_IO -c "write 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir 173{ $QEMU_IMG snapshot -c test $TEST_IMG; } 2>&1 | _filter_testdir 174poke_file "$TEST_IMG" "$offset_snap1_l1_size" "\x10\x00\x00\x00" 175{ $QEMU_IMG convert -s test $TEST_IMG $TEST_IMG.snap; } 2>&1 | _filter_testdir 176 177# success, all done 178echo "*** done" 179rm -f $seq.full 180status=0 181