tests/qemu-iotests/080

   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
  22 owner=kwolf@redhat.com
  23
  24 seq=`basename $0`
  25 echo "QA output created by $seq"
  26
  27 here=`pwd`
  28 tmp=/tmp/$$
  29 status=1        # failure is the default!
  30
  31 _cleanup()
  32 {
  33     rm -f $TEST_IMG.snap
  34     _cleanup_test_img
  35 }
  36 trap "_cleanup; exit \$status" 0 1 2 3 15
  37
  38 # get standard environment, filters and checks
  39 . ./common.rc
  40 . ./common.filter
  41
  42 _supported_fmt qcow2
  43 _supported_proto generic
  44 _supported_os Linux
  45
  46 header_size=104
  47
  48 offset_backing_file_offset=8
  49 offset_backing_file_size=16
  50 offset_l1_size=36
  51 offset_l1_table_offset=40
  52 offset_refcount_table_offset=48
  53 offset_refcount_table_clusters=56
  54 offset_nb_snapshots=60
  55 offset_snapshots_offset=64
  56 offset_header_size=100
  57 offset_ext_magic=$header_size
  58 offset_ext_size=$((header_size + 4))
  59
  60 offset_l2_table_0=$((0x40000))
  61
  62 offset_snap1=$((0x70000))
  63 offset_snap1_l1_offset=$((offset_snap1 + 0))
  64 offset_snap1_l1_size=$((offset_snap1 + 8))
  65
  66 echo
  67 echo "== Huge header size =="
  68 _make_test_img 64M
  69 poke_file "$TEST_IMG" "$offset_header_size" "\xff\xff\xff\xff"
  70 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  71 poke_file "$TEST_IMG" "$offset_header_size" "\x7f\xff\xff\xff"
  72 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  73
  74 echo
  75 echo "== Huge unknown header extension =="
  76 _make_test_img 64M
  77 poke_file "$TEST_IMG" "$offset_backing_file_offset" "\xff\xff\xff\xff\xff\xff\xff\xff"
  78 poke_file "$TEST_IMG" "$offset_ext_magic" "\x12\x34\x56\x78"
  79 poke_file "$TEST_IMG" "$offset_ext_size" "\x7f\xff\xff\xff"
  80 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  81 poke_file "$TEST_IMG" "$offset_backing_file_offset" "\x00\x00\x00\x00\x00\x00\x00\x00"
  82 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  83
  84 echo
  85 echo "== Huge refcount table size =="
  86 _make_test_img 64M
  87 poke_file "$TEST_IMG" "$offset_refcount_table_clusters" "\xff\xff\xff\xff"
  88 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  89 poke_file "$TEST_IMG" "$offset_refcount_table_clusters" "\x00\x02\x00\x01"
  90 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  91
  92 echo
  93 echo "== Misaligned refcount table =="
  94 _make_test_img 64M
  95 poke_file "$TEST_IMG" "$offset_refcount_table_offset" "\x12\x34\x56\x78\x90\xab\xcd\xef"
  96 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  97
  98 echo
  99 echo "== Huge refcount offset =="
 100 _make_test_img 64M
 101 poke_file "$TEST_IMG" "$offset_refcount_table_offset" "\xff\xff\xff\xff\xff\xff\x00\x00"
 102 poke_file "$TEST_IMG" "$offset_refcount_table_clusters" "\x00\x00\x00\x7f"
 103 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 104
 105 echo
 106 echo "== Invalid snapshot table =="
 107 _make_test_img 64M
 108 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\xff\xff\xff\xff"
 109 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 110 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x7f\xff\xff\xff"
 111 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 112
 113 poke_file "$TEST_IMG" "$offset_snapshots_offset" "\xff\xff\xff\xff\xff\xff\x00\x00"
 114 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x00\x00\xff\xff"
 115 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 116
 117 poke_file "$TEST_IMG" "$offset_snapshots_offset" "\x12\x34\x56\x78\x90\xab\xcd\xef"
 118 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x00\x00\x00\x00"
 119 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 120
 121 echo
 122 echo "== Hitting snapshot table size limit =="
 123 _make_test_img 64M
 124 # Put the refcount table in a more or less safe place (16 MB)
 125 poke_file "$TEST_IMG" "$offset_snapshots_offset" "\x00\x00\x00\x00\x01\x00\x00\x00"
 126 poke_file "$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" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 129
 130 echo
 131 echo "== Invalid L1 table =="
 132 _make_test_img 64M
 133 poke_file "$TEST_IMG" "$offset_l1_size" "\xff\xff\xff\xff"
 134 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 135 poke_file "$TEST_IMG" "$offset_l1_size" "\x7f\xff\xff\xff"
 136 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 137
 138 poke_file "$TEST_IMG" "$offset_l1_table_offset" "\x7f\xff\xff\xff\xff\xff\x00\x00"
 139 poke_file "$TEST_IMG" "$offset_l1_size" "\x00\x00\xff\xff"
 140 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 141
 142 poke_file "$TEST_IMG" "$offset_l1_table_offset" "\x12\x34\x56\x78\x90\xab\xcd\xef"
 143 poke_file "$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
 146 echo
 147 echo "== Invalid L1 table (with internal snapshot in the image) =="
 148 _make_test_img 64M
 149 { $QEMU_IMG snapshot -c foo $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 150 poke_file "$TEST_IMG" "$offset_l1_size" "\x00\x00\x00\x00"
 151 _img_info
 152
 153 echo
 154 echo "== Invalid backing file size =="
 155 _make_test_img 64M
 156 poke_file "$TEST_IMG" "$offset_backing_file_offset" "\x00\x00\x00\x00\x00\x00\x10\x00"
 157 poke_file "$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
 160 echo
 161 echo "== Invalid L2 entry (huge physical offset) =="
 162 _make_test_img 64M
 163 { $QEMU_IO -c "write 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 164 poke_file "$TEST_IMG" "$offset_l2_table_0" "\xbf\xff\xff\xff\xff\xff\x00\x00"
 165 { $QEMU_IMG snapshot -c test $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 166 poke_file "$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
 169 echo
 170 echo "== 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 $TEST_IMG; } 2>&1 | _filter_testdir
 174 poke_file "$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
 178 echo "*** done"
 179 rm -f $seq.full
 180 status=0