tests/qemu-iotests/084

   1 #!/usr/bin/env 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 status=1        # failure is the default!
  29
  30 _cleanup()
  31 {
  32         _cleanup_test_img
  33 }
  34 trap "_cleanup; exit \$status" 0 1 2 3 15
  35
  36 # get standard environment, filters and checks
  37 . ./common.rc
  38 . ./common.filter
  39
  40 # This tests vdi-specific header fields
  41 _supported_fmt vdi
  42 _supported_proto file
  43 _supported_os Linux
  44
  45 size=64M
  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 "=== Statically allocated image creation ==="
  52 echo
  53 _make_test_img $size -o static
  54 _img_info
  55 stat -c"disk image file size in bytes: %s" "${TEST_IMG}"
  56 _cleanup_test_img
  57
  58 echo
  59 echo "=== Testing image size bounds ==="
  60 echo
  61 _make_test_img $size
  62 _img_info
  63 stat -c"disk image file size in bytes: %s" "${TEST_IMG}"
  64
  65 # check for image size too large
  66 # poke max image size, and appropriate blocks_in_image value
  67 echo "Test 1: Maximum size (512 TB - 128 MB):"
  68 poke_file "$TEST_IMG" "$ds_offset" "\x00\x00\x00\xf8\xff\xff\x01\x00"
  69 poke_file "$TEST_IMG" "$bii_offset" "\x80\xff\xff\x1f"
  70 _img_info
  71
  72 echo
  73 echo "Test 2: Size too large (512 TB - 128 MB + 64 kB)"
  74 # This should be too large (-EINVAL):
  75 poke_file "$TEST_IMG" "$ds_offset" "\x00\x00\x01\xf8\xff\xff\x01\x00"
  76 _img_info
  77
  78 echo
  79 echo "Test 3: Size valid (64M), but Blocks In Image too small (63)"
  80 # This sets the size to 64M, but with a blocks_in_image size that is
  81 # too small
  82 poke_file "$TEST_IMG" "$ds_offset" "\x00\x00\x00\x04\x00\x00\x00\x00"
  83 # For a 64M image, we would need a blocks_in_image value of at least 64,
  84 # so 63 should be too small and give us -ENOTSUP
  85 poke_file "$TEST_IMG" "$bii_offset" "\x3f\x00\x00\x00"
  86 _img_info
  87
  88 echo
  89 echo "Test 4: Size valid (64M), but Blocks In Image exceeds max allowed"
  90 # Now check the bounds of blocks_in_image - 0x1fffff80 should be the max
  91 # value here, and we should get -ENOTSUP
  92 poke_file "$TEST_IMG" "$bii_offset" "\x81\xff\xff\x1f"
  93 _img_info
  94
  95 # Finally, 1MB is the only block size supported.  Verify that
  96 # a value != 1MB results in error, both smaller and larger
  97 echo
  98 echo "Test 5: Valid Image: 64MB, Blocks In Image 64, Block Size 1MB"
  99 poke_file "$TEST_IMG" "$bii_offset" "\x40\x00\x00\x00" # reset bii to valid
 100 poke_file "$TEST_IMG" "$bs_offset" "\x00\x00\x10\x00"  # valid
 101 _img_info
 102 echo
 103 echo "Test 6: Block Size != 1MB; too small test (1MB - 1)"
 104 poke_file "$TEST_IMG" "$bs_offset" "\xff\xff\x0f\x00"  # invalid (too small)
 105 _img_info
 106 echo
 107 echo "Test 7: Block Size != 1MB; too large test (1MB + 64KB)"
 108 poke_file "$TEST_IMG" "$bs_offset" "\x00\x00\x11\x00"  # invalid (too large)
 109 _img_info
 110 # success, all done
 111 echo
 112 echo "*** done"
 113 rm -f $seq.full
 114 status=0