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 $TEST_IMG.snap
  34     _cleanup_test_img
  35 }
  36 trap "_cleanup; exit \$status" 0 1 2 3 15
  37
  38 # get standard environment, filters and checks
  39 . ./common.rc
  40 . ./common.filter
  41
  42 _supported_fmt qcow2
  43 _supported_proto file
  44 _supported_os Linux
  45 # Internal snapshots are (currently) impossible with refcount_bits=1
  46 _unsupported_imgopts 'refcount_bits=1[^0-9]'
  47
  48 header_size=104
  49
  50 offset_backing_file_offset=8
  51 offset_backing_file_size=16
  52 offset_l1_size=36
  53 offset_l1_table_offset=40
  54 offset_refcount_table_offset=48
  55 offset_refcount_table_clusters=56
  56 offset_nb_snapshots=60
  57 offset_snapshots_offset=64
  58 offset_header_size=100
  59 offset_ext_magic=$header_size
  60 offset_ext_size=$((header_size + 4))
  61
  62 offset_l2_table_0=$((0x40000))
  63
  64 offset_snap1=$((0x70000))
  65 offset_snap1_l1_offset=$((offset_snap1 + 0))
  66 offset_snap1_l1_size=$((offset_snap1 + 8))
  67
  68 echo
  69 echo "== Huge header size =="
  70 _make_test_img 64M
  71 poke_file "$TEST_IMG" "$offset_header_size" "\xff\xff\xff\xff"
  72 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  73 poke_file "$TEST_IMG" "$offset_header_size" "\x7f\xff\xff\xff"
  74 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  75
  76 echo
  77 echo "== Huge unknown header extension =="
  78 _make_test_img 64M
  79 poke_file "$TEST_IMG" "$offset_backing_file_offset" "\xff\xff\xff\xff\xff\xff\xff\xff"
  80 poke_file "$TEST_IMG" "$offset_ext_magic" "\x12\x34\x56\x78"
  81 poke_file "$TEST_IMG" "$offset_ext_size" "\x7f\xff\xff\xff"
  82 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  83 poke_file "$TEST_IMG" "$offset_backing_file_offset" "\x00\x00\x00\x00\x00\x00\x00\x$(printf %x $offset_ext_size)"
  84 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  85 poke_file "$TEST_IMG" "$offset_backing_file_offset" "\x00\x00\x00\x00\x00\x00\x00\x00"
  86 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  87
  88 echo
  89 echo "== Huge refcount table size =="
  90 _make_test_img 64M
  91 poke_file "$TEST_IMG" "$offset_refcount_table_clusters" "\xff\xff\xff\xff"
  92 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  93 poke_file "$TEST_IMG" "$offset_refcount_table_clusters" "\x00\x02\x00\x01"
  94 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  95
  96 echo
  97 echo "== Misaligned refcount table =="
  98 _make_test_img 64M
  99 poke_file "$TEST_IMG" "$offset_refcount_table_offset" "\x12\x34\x56\x78\x90\xab\xcd\xef"
 100 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 101
 102 echo
 103 echo "== Huge refcount offset =="
 104 _make_test_img 64M
 105 poke_file "$TEST_IMG" "$offset_refcount_table_offset" "\xff\xff\xff\xff\xff\xff\x00\x00"
 106 poke_file "$TEST_IMG" "$offset_refcount_table_clusters" "\x00\x00\x00\x7f"
 107 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 108
 109 echo
 110 echo "== Invalid snapshot table =="
 111 _make_test_img 64M
 112 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\xff\xff\xff\xff"
 113 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 114 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x7f\xff\xff\xff"
 115 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 116
 117 poke_file "$TEST_IMG" "$offset_snapshots_offset" "\xff\xff\xff\xff\xff\xff\x00\x00"
 118 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x00\x00\xff\xff"
 119 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 120
 121 poke_file "$TEST_IMG" "$offset_snapshots_offset" "\x12\x34\x56\x78\x90\xab\xcd\xef"
 122 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x00\x00\x00\x00"
 123 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 124
 125 echo
 126 echo "== Hitting snapshot table size limit =="
 127 _make_test_img 64M
 128 # Put the refcount table in a more or less safe place (16 MB)
 129 poke_file "$TEST_IMG" "$offset_snapshots_offset" "\x00\x00\x00\x00\x01\x00\x00\x00"
 130 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x00\x01\x00\x00"
 131 { $QEMU_IMG snapshot -c test $TEST_IMG; } 2>&1 | _filter_testdir
 132 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 133
 134 echo
 135 echo "== Invalid L1 table =="
 136 _make_test_img 64M
 137 poke_file "$TEST_IMG" "$offset_l1_size" "\xff\xff\xff\xff"
 138 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 139 poke_file "$TEST_IMG" "$offset_l1_size" "\x7f\xff\xff\xff"
 140 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 141
 142 poke_file "$TEST_IMG" "$offset_l1_table_offset" "\x7f\xff\xff\xff\xff\xff\x00\x00"
 143 poke_file "$TEST_IMG" "$offset_l1_size" "\x00\x00\xff\xff"
 144 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 145
 146 poke_file "$TEST_IMG" "$offset_l1_table_offset" "\x12\x34\x56\x78\x90\xab\xcd\xef"
 147 poke_file "$TEST_IMG" "$offset_l1_size" "\x00\x00\x00\x01"
 148 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 149
 150 echo
 151 echo "== Invalid L1 table (with internal snapshot in the image) =="
 152 _make_test_img 64M
 153 { $QEMU_IMG snapshot -c foo $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 154 poke_file "$TEST_IMG" "$offset_l1_size" "\x00\x00\x00\x00"
 155 _img_info
 156
 157 echo
 158 echo "== Invalid backing file size =="
 159 _make_test_img 64M
 160 poke_file "$TEST_IMG" "$offset_backing_file_offset" "\x00\x00\x00\x00\x00\x00\x10\x00"
 161 poke_file "$TEST_IMG" "$offset_backing_file_size" "\xff\xff\xff\xff"
 162 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 163
 164 echo
 165 echo "== Invalid L2 entry (huge physical offset) =="
 166 _make_test_img 64M
 167 { $QEMU_IO -c "write 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 168 poke_file "$TEST_IMG" "$offset_l2_table_0" "\xbf\xff\xff\xff\xff\xff\x00\x00"
 169 { $QEMU_IMG snapshot -c test $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 170 poke_file "$TEST_IMG" "$offset_l2_table_0" "\x80\x00\x00\xff\xff\xff\x00\x00"
 171 { $QEMU_IMG snapshot -c test $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 172
 173 echo
 174 echo "== Invalid snapshot L1 table =="
 175 _make_test_img 64M
 176 { $QEMU_IO -c "write 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 177 { $QEMU_IMG snapshot -c test $TEST_IMG; } 2>&1 | _filter_testdir
 178 poke_file "$TEST_IMG" "$offset_snap1_l1_size" "\x10\x00\x00\x00"
 179 { $QEMU_IMG convert -s test $TEST_IMG $TEST_IMG.snap; } 2>&1 | _filter_testdir
 180
 181 # success, all done
 182 echo "*** done"
 183 rm -f $seq.full
 184 status=0