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