tests/test-vsock.sh

   1 #!/usr/bin/env bash
   2 # nbdkit
   3 # Copyright (C) 2016-2020 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 #
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  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 --vsock option.
  34 #
  35 # This test is only possible on Linux >= 5.6 because that is the first
  36 # version supporting loopback AF_VSOCK (so you can run client and
  37 # server on the same host without needing to use a virtual machine).
  38 #
  39 # It also requires nbdsh with vsock support, and tests that 32 bit
  40 # ports are supported - ie. that we didn't make any 16 bit assumptions
  41 # about port numbers anywhere in the stack.
  42
  43 source ./functions.sh
  44 set -e
  45 set -x
  46
  47 requires nbdsh --version
  48 requires nbdsh -c 'print (h.connect_vsock)'
  49 requires_linux_kernel_version 5.6
  50
  51 # Because vsock ports are 32 bits, we can basically pick one at random
  52 # and be sure that it's not used.  However we must pick one >= 1024
  53 # because the ports below this are privileged.
  54 port=$(( 1024 + $RANDOM + ($RANDOM << 16) ))
  55
  56 files="vsock.pid"
  57 rm -f $files
  58 cleanup_fn rm -f $files
  59
  60 # Run nbdkit.
  61 start_nbdkit -P vsock.pid --vsock --port $port memory 1M
  62
  63 export port
  64 nbdsh -c - <<'EOF'
  65 import os
  66
  67 # 1 = VMADDR_CID_LOCAL
  68 h.connect_vsock (1, int (os.environ["port"]))
  69
  70 size = h.get_size ()
  71 assert size == 1048576
  72 EOF