tests/test-data-64b.sh

   1 #!/usr/bin/env bash
   2 # nbdkit
   3 # Copyright (C) 2018-2020 Red Hat Inc.
   4 #
   5 # Redistribution and use in source and binary forms, with or without
   6 # modification, are permitted provided that the following conditions are
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   8 #
   9 # * Redistributions of source code must retain the above copyright
  10 # notice, this list of conditions and the following disclaimer.
  11 #
  12 # * Redistributions in binary form must reproduce the above copyright
  13 # notice, this list of conditions and the following disclaimer in the
  14 # documentation and/or other materials provided with the distribution.
  15 #
  16 # * Neither the name of Red Hat nor the names of its contributors may be
  17 # used to endorse or promote products derived from this software without
  18 # specific prior written permission.
  19 #
  20 # THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
  21 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  22 # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  23 # PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
  24 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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  28 # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  29 # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  30 # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31 # SUCH DAMAGE.
  32
  33 # Test the data plugin with > 4G (64 bit) nesting.
  34 #
  35 # This was broken before 1.23.5 because 64 bit counts were being
  36 # truncated to 32 bit in the allocator layer.
  37
  38 source ./functions.sh
  39 set -e
  40 set -x
  41
  42 requires_nbdsh_uri
  43
  44 sock=$(mktemp -u /tmp/nbdkit-test-sock.XXXXXX)
  45 files="data-64b.pid $sock"
  46 rm -f $files
  47 cleanup_fn rm -f $files
  48
  49 # Run nbdkit.
  50 start_nbdkit -P data-64b.pid -U $sock \
  51        data '
  52 # Construct a named subexpression which is larger than 32 bits
  53 # in size and has markers at the beginning and end.  This is 8 GB
  54 # (sparse).
  55 ( 0x55 0xAA @0x200000000 @-2 0x55 0xAA ) -> \1
  56
  57 # Construct a sparse disk containing several copies using the "*"
  58 # operator.  The total disk image will be 8*4 = 32 GB (sparse).
  59 \1 * 4
  60 '
  61
  62 nbdsh --connect "nbd+unix://?socket=$sock" \
  63       -c '
  64 print ("%d" % h.get_size())
  65 assert h.get_size() == 0x800000000
  66
  67 # Read the markers.
  68 for i in range(4):
  69     offset = i * 0x200000000
  70     buf = h.pread(2, offset)
  71     assert buf == b"\x55\xAA"
  72     buf = h.pread(2, offset + 0x200000000 - 2)
  73     assert buf == b"\x55\xAA"
  74 '