tests/qemu-iotests/084

   1 #!/bin/bash
   2 #
   3 # Test case for VDI header corruption; image too large, and too many blocks
   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=jcody@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         _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 # This tests vdi-specific header fields
  42 _supported_fmt vdi
  43 _supported_proto generic
  44 _supported_os Linux
  45
  46 ds_offset=368  # disk image size field offset
  47 bs_offset=376  # block size field offset
  48 bii_offset=384 # block in image field offset
  49
  50 echo
  51 echo "=== Testing image size bounds ==="
  52 echo
  53 _make_test_img 64M
  54
  55 # check for image size too large
  56 # poke max image size, and appropriate blocks_in_image value
  57 echo "Test 1: Maximum size (1024 TB):"
  58 poke_file "$TEST_IMG" "$ds_offset" "\x00\x00\xf0\xff\xff\xff\x03\x00"
  59 poke_file "$TEST_IMG" "$bii_offset" "\xff\xff\xff\x3f"
  60 _img_info
  61
  62 echo
  63 echo "Test 2: Size too large (1024TB + 1)"
  64 # This should be too large (-EINVAL):
  65 poke_file "$TEST_IMG" "$ds_offset" "\x00\x00\xf1\xff\xff\xff\x03\x00"
  66 _img_info
  67
  68 echo
  69 echo "Test 3: Size valid (64M), but Blocks In Image too small (63)"
  70 # This sets the size to 64M, but with a blocks_in_image size that is
  71 # too small
  72 poke_file "$TEST_IMG" "$ds_offset" "\x00\x00\x00\x04\x00\x00\x00\x00"
  73 # For a 64M image, we would need a blocks_in_image value of at least 64,
  74 # so 63 should be too small and give us -ENOTSUP
  75 poke_file "$TEST_IMG" "$bii_offset" "\x3f\x00\x00\x00"
  76 _img_info
  77
  78 echo
  79 echo "Test 4: Size valid (64M), but Blocks In Image exceeds max allowed"
  80 # Now check the bounds of blocks_in_image - 0x3fffffff should be the max
  81 # value here, and we should get -ENOTSUP
  82 poke_file "$TEST_IMG" "$bii_offset" "\x00\x00\x00\x40"
  83 _img_info
  84
  85 # Finally, 1MB is the only block size supported.  Verify that
  86 # a value != 1MB results in error, both smaller and larger
  87 echo
  88 echo "Test 5: Valid Image: 64MB, Blocks In Image 64, Block Size 1MB"
  89 poke_file "$TEST_IMG" "$bii_offset" "\x40\x00\x00\x00" # reset bii to valid
  90 poke_file "$TEST_IMG" "$bs_offset" "\x00\x00\x10\x00"  # valid
  91 _img_info
  92 echo
  93 echo "Test 6: Block Size != 1MB; too small test (1MB - 1)"
  94 poke_file "$TEST_IMG" "$bs_offset" "\xff\xff\x0f\x00"  # invalid (too small)
  95 _img_info
  96 echo
  97 echo "Test 7: Block Size != 1MB; too large test (1MB + 64KB)"
  98 poke_file "$TEST_IMG" "$bs_offset" "\x00\x00\x11\x00"  # invalid (too large)
  99 _img_info
 100 # success, all done
 101 echo
 102 echo "*** done"
 103 rm -f $seq.full
 104 status=0