iotests: Add test for a nonexistent NBD export

#!/bin/bash

#

# Test case for connecting to a non-existing NBD export name

#

# Copyright (C) 2016 Red Hat, Inc.

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

#

# creator

owner=mreitz@redhat.com

seq="$(basename $0)"

echo "QA output created by $seq"

here="$PWD"

tmp=/tmp/$$

status=1	# failure is the default!

_cleanup()

{

    rm -f "$TEST_DIR/nbd"

}

trap "_cleanup; exit \$status" 0 1 2 3 15

# get standard environment, filters and checks

. ./common.rc

. ./common.filter

. ./common.qemu

_supported_fmt generic

_supported_proto generic

_supported_os Linux

keep_stderr=y \

_launch_qemu 2> >(_filter_nbd)

_send_qemu_cmd $QEMU_HANDLE \

    "{ 'execute': 'qmp_capabilities' }" \

    'return'

_send_qemu_cmd $QEMU_HANDLE \

    "{ 'execute': 'nbd-server-start',

       'arguments': { 'addr': { 'type': 'unix',

                                'data': { 'path': '$TEST_DIR/nbd' }}}}" \

    'return'

# This should just result in a client error, not in the server crashing

$QEMU_IO_PROG -f raw -c quit \

    "nbd+unix:///no_such_export?socket=$TEST_DIR/nbd" 2>&1 \

    | _filter_qemu_io | _filter_nbd

_send_qemu_cmd $QEMU_HANDLE \

    "{ 'execute': 'quit' }" \

    'return'

wait=1 _cleanup_qemu

# success, all done

echo '*** done'

rm -f $seq.full

status=0

QA output created by 143

{"return": {}}

{"return": {}}

can't open device nbd+unix:///no_such_export?socket=TEST_DIR/nbd: Failed to read export length

{"return": {}}

{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "SHUTDOWN"}

*** done

138 rw auto quick

139 rw auto quick

142 auto

143 auto quick