tests/test-nbd-vsock.sh

   1 #!/usr/bin/env bash
   2 # nbdkit
   3 # Copyright Red Hat
   4 #
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   6 # modification, are permitted provided that the following conditions are
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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
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  15 #
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  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
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  26 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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  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 nbd 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_uri
  48 requires nbdsh -c 'print(h.connect_vsock)'
  49 requires_linux_kernel_version 5.6
  50 requires_vsock_support
  51
  52 # Because vsock ports are 32 bits, we can basically pick one at random
  53 # and be sure that it's not used.  However we must pick one >= 1024
  54 # because the ports below this are privileged.
  55 port=$(( 1024 + $RANDOM + ($RANDOM << 16) ))
  56
  57 files="nbd-vsock.pid"
  58 rm -f $files
  59 cleanup_fn rm -f $files
  60
  61 # Run nbdkit as a vsock server.
  62 start_nbdkit -P nbd-vsock.pid --vsock --port $port memory 1M
  63
  64 # Run a second nbdkit as a vsock->Unix bridge.
  65 nbdkit -U - nbd vsock=1 port=$port --run 'nbdsh -u "$uri" -c "
  66 size = h.get_size()
  67 assert size == 1048576
  68 "'