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 status=1        # failure is the default!
  29
  30 _cleanup()
  31 {
  32     rm -f $TEST_IMG.snap
  33     _cleanup_test_img
  34 }
  35 trap "_cleanup; exit \$status" 0 1 2 3 15
  36
  37 # get standard environment, filters and checks
  38 . ./common.rc
  39 . ./common.filter
  40
  41 _supported_fmt qcow2
  42 _supported_proto file
  43 _supported_os Linux
  44 # Internal snapshots are (currently) impossible with refcount_bits=1
  45 _unsupported_imgopts 'refcount_bits=1[^0-9]'
  46
  47 header_size=104
  48
  49 offset_backing_file_offset=8
  50 offset_backing_file_size=16
  51 offset_l1_size=36
  52 offset_l1_table_offset=40
  53 offset_refcount_table_offset=48
  54 offset_refcount_table_clusters=56
  55 offset_nb_snapshots=60
  56 offset_snapshots_offset=64
  57 offset_header_size=100
  58 offset_ext_magic=$header_size
  59 offset_ext_size=$((header_size + 4))
  60
  61 offset_l2_table_0=$((0x40000))
  62
  63 offset_snap1=$((0x70000))
  64 offset_snap1_l1_offset=$((offset_snap1 + 0))
  65 offset_snap1_l1_size=$((offset_snap1 + 8))
  66
  67 echo
  68 echo "== Huge header size =="
  69 _make_test_img 64M
  70 poke_file "$TEST_IMG" "$offset_header_size" "\xff\xff\xff\xff"
  71 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  72 poke_file "$TEST_IMG" "$offset_header_size" "\x7f\xff\xff\xff"
  73 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  74
  75 echo
  76 echo "== Huge unknown header extension =="
  77 _make_test_img 64M
  78 poke_file "$TEST_IMG" "$offset_backing_file_offset" "\xff\xff\xff\xff\xff\xff\xff\xff"
  79 poke_file "$TEST_IMG" "$offset_ext_magic" "\x12\x34\x56\x78"
  80 poke_file "$TEST_IMG" "$offset_ext_size" "\x7f\xff\xff\xff"
  81 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  82 poke_file "$TEST_IMG" "$offset_backing_file_offset" "\x00\x00\x00\x00\x00\x00\x00\x$(printf %x $offset_ext_size)"
  83 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  84 poke_file "$TEST_IMG" "$offset_backing_file_offset" "\x00\x00\x00\x00\x00\x00\x00\x00"
  85 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  86
  87 echo
  88 echo "== Huge refcount table size =="
  89 _make_test_img 64M
  90 poke_file "$TEST_IMG" "$offset_refcount_table_clusters" "\xff\xff\xff\xff"
  91 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  92 poke_file "$TEST_IMG" "$offset_refcount_table_clusters" "\x00\x02\x00\x01"
  93 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
  94
  95 echo
  96 echo "== Misaligned refcount table =="
  97 _make_test_img 64M
  98 poke_file "$TEST_IMG" "$offset_refcount_table_offset" "\x12\x34\x56\x78\x90\xab\xcd\xef"
  99 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 100
 101 echo
 102 echo "== Huge refcount offset =="
 103 _make_test_img 64M
 104 poke_file "$TEST_IMG" "$offset_refcount_table_offset" "\xff\xff\xff\xff\xff\xff\x00\x00"
 105 poke_file "$TEST_IMG" "$offset_refcount_table_clusters" "\x00\x00\x00\x7f"
 106 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 107
 108 echo
 109 echo "== Invalid snapshot table =="
 110 _make_test_img 64M
 111 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\xff\xff\xff\xff"
 112 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 113 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x7f\xff\xff\xff"
 114 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 115
 116 poke_file "$TEST_IMG" "$offset_snapshots_offset" "\xff\xff\xff\xff\xff\xff\x00\x00"
 117 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x00\x00\xff\xff"
 118 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 119
 120 poke_file "$TEST_IMG" "$offset_snapshots_offset" "\x12\x34\x56\x78\x90\xab\xcd\xef"
 121 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x00\x00\x00\x00"
 122 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 123
 124 echo
 125 echo "== Hitting snapshot table size limit =="
 126 _make_test_img 64M
 127 # Put the refcount table in a more or less safe place (16 MB)
 128 poke_file "$TEST_IMG" "$offset_snapshots_offset" "\x00\x00\x00\x00\x01\x00\x00\x00"
 129 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x00\x01\x00\x00"
 130 { $QEMU_IMG snapshot -c test $TEST_IMG; } 2>&1 | _filter_testdir
 131 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 132
 133 echo
 134 echo "== Invalid L1 table =="
 135 _make_test_img 64M
 136 poke_file "$TEST_IMG" "$offset_l1_size" "\xff\xff\xff\xff"
 137 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 138 poke_file "$TEST_IMG" "$offset_l1_size" "\x7f\xff\xff\xff"
 139 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 140
 141 poke_file "$TEST_IMG" "$offset_l1_table_offset" "\x7f\xff\xff\xff\xff\xff\x00\x00"
 142 poke_file "$TEST_IMG" "$offset_l1_size" "\x00\x00\xff\xff"
 143 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 144
 145 poke_file "$TEST_IMG" "$offset_l1_table_offset" "\x12\x34\x56\x78\x90\xab\xcd\xef"
 146 poke_file "$TEST_IMG" "$offset_l1_size" "\x00\x00\x00\x01"
 147 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 148
 149 echo
 150 echo "== Invalid L1 table (with internal snapshot in the image) =="
 151 _make_test_img 64M
 152 { $QEMU_IMG snapshot -c foo $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 153 poke_file "$TEST_IMG" "$offset_l1_size" "\x00\x00\x00\x00"
 154 _img_info
 155
 156 echo
 157 echo "== Invalid backing file size =="
 158 _make_test_img 64M
 159 poke_file "$TEST_IMG" "$offset_backing_file_offset" "\x00\x00\x00\x00\x00\x00\x10\x00"
 160 poke_file "$TEST_IMG" "$offset_backing_file_size" "\xff\xff\xff\xff"
 161 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 162
 163 echo
 164 echo "== Invalid L2 entry (huge physical offset) =="
 165 _make_test_img 64M
 166 { $QEMU_IO -c "write 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 167 poke_file "$TEST_IMG" "$offset_l2_table_0" "\xbf\xff\xff\xff\xff\xff\x00\x00"
 168 { $QEMU_IMG snapshot -c test $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 169 poke_file "$TEST_IMG" "$offset_l2_table_0" "\x80\x00\x00\xff\xff\xff\x00\x00"
 170 { $QEMU_IMG snapshot -c test $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 171
 172 echo
 173 echo "== Invalid snapshot L1 table =="
 174 _make_test_img 64M
 175 { $QEMU_IO -c "write 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
 176 { $QEMU_IMG snapshot -c test $TEST_IMG; } 2>&1 | _filter_testdir
 177 poke_file "$TEST_IMG" "$offset_snap1_l1_size" "\x10\x00\x00\x00"
 178 { $QEMU_IMG convert -s test $TEST_IMG $TEST_IMG.snap; } 2>&1 | _filter_testdir
 179
 180 # success, all done
 181 echo "*** done"
 182 rm -f $seq.full
 183 status=0