tests/qemu-iotests/084

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