tests/qemu-iotests/084

   1 #!/bin/bash
   2 #
   3 # Test case for VDI header corruption; image too large, and too many blocks.
   4 # Also simple test for creating dynamic and static VDI images.
   5 #
   6 # Copyright (C) 2013 Red Hat, Inc.
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 2 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 #
  21
  22 # creator
  23 owner=jcody@redhat.com
  24
  25 seq=`basename $0`
  26 echo "QA output created by $seq"
  27
  28 here=`pwd`
  29 tmp=/tmp/$$
  30 status=1        # failure is the default!
  31
  32 _cleanup()
  33 {
  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 # This tests vdi-specific header fields
  43 _supported_fmt vdi
  44 _supported_proto file
  45 _supported_os Linux
  46
  47 size=64M
  48 ds_offset=368  # disk image size field offset
  49 bs_offset=376  # block size field offset
  50 bii_offset=384 # block in image field offset
  51
  52 echo
  53 echo "=== Statically allocated image creation ==="
  54 echo
  55 _make_test_img $size -o static
  56 _img_info
  57 stat -c"disk image file size in bytes: %s" "${TEST_IMG}"
  58 _cleanup_test_img
  59
  60 echo
  61 echo "=== Testing image size bounds ==="
  62 echo
  63 _make_test_img $size
  64 _img_info
  65 stat -c"disk image file size in bytes: %s" "${TEST_IMG}"
  66
  67 # check for image size too large
  68 # poke max image size, and appropriate blocks_in_image value
  69 echo "Test 1: Maximum size (512 TB - 128 MB):"
  70 poke_file "$TEST_IMG" "$ds_offset" "\x00\x00\x00\xf8\xff\xff\x01\x00"
  71 poke_file "$TEST_IMG" "$bii_offset" "\x80\xff\xff\x1f"
  72 _img_info
  73
  74 echo
  75 echo "Test 2: Size too large (512 TB - 128 MB + 64 kB)"
  76 # This should be too large (-EINVAL):
  77 poke_file "$TEST_IMG" "$ds_offset" "\x00\x00\x01\xf8\xff\xff\x01\x00"
  78 _img_info
  79
  80 echo
  81 echo "Test 3: Size valid (64M), but Blocks In Image too small (63)"
  82 # This sets the size to 64M, but with a blocks_in_image size that is
  83 # too small
  84 poke_file "$TEST_IMG" "$ds_offset" "\x00\x00\x00\x04\x00\x00\x00\x00"
  85 # For a 64M image, we would need a blocks_in_image value of at least 64,
  86 # so 63 should be too small and give us -ENOTSUP
  87 poke_file "$TEST_IMG" "$bii_offset" "\x3f\x00\x00\x00"
  88 _img_info
  89
  90 echo
  91 echo "Test 4: Size valid (64M), but Blocks In Image exceeds max allowed"
  92 # Now check the bounds of blocks_in_image - 0x1fffff80 should be the max
  93 # value here, and we should get -ENOTSUP
  94 poke_file "$TEST_IMG" "$bii_offset" "\x81\xff\xff\x1f"
  95 _img_info
  96
  97 # Finally, 1MB is the only block size supported.  Verify that
  98 # a value != 1MB results in error, both smaller and larger
  99 echo
 100 echo "Test 5: Valid Image: 64MB, Blocks In Image 64, Block Size 1MB"
 101 poke_file "$TEST_IMG" "$bii_offset" "\x40\x00\x00\x00" # reset bii to valid
 102 poke_file "$TEST_IMG" "$bs_offset" "\x00\x00\x10\x00"  # valid
 103 _img_info
 104 echo
 105 echo "Test 6: Block Size != 1MB; too small test (1MB - 1)"
 106 poke_file "$TEST_IMG" "$bs_offset" "\xff\xff\x0f\x00"  # invalid (too small)
 107 _img_info
 108 echo
 109 echo "Test 7: Block Size != 1MB; too large test (1MB + 64KB)"
 110 poke_file "$TEST_IMG" "$bs_offset" "\x00\x00\x11\x00"  # invalid (too large)
 111 _img_info
 112 # success, all done
 113 echo
 114 echo "*** done"
 115 rm -f $seq.full
 116 status=0