qemu/tests/qemu-iotests/162

#!/usr/bin/env bash
#
# Test case for specifying runtime options of the wrong type to some
# block drivers
#
# 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"

status=1	# failure is the default!

_cleanup()
{
    rm -f "${TEST_DIR}/qemu-nbd.pid"
    rm -f 42
}
trap "_cleanup; exit \$status" 0 1 2 3 15

# get standard environment, filters and checks
. ./common.rc
. ./common.filter

_supported_fmt generic
_require_drivers ssh

echo
echo '=== NBD ==='
# NBD expects all of its arguments to be strings

# So this should not crash
$QEMU_IMG info 'json:{"driver": "nbd", "host": -1}'

# And this should not treat @port as if it had not been specified
# (We need to set up a server here, because the error message for "Connection
#  refused" does not contain the destination port)

# Launching qemu-nbd is done in a loop: We try to set up an NBD server on some
# random port and continue until success, i.e. until we have found a port that
# is not in use yet.
while true; do
    port=$((RANDOM + 32768))
    if $QEMU_NBD -p $port -f raw --fork null-co:// 2> /dev/null; then
        break
    fi
done

$QEMU_IMG info "json:{'driver': 'nbd', 'host': 'localhost', 'port': $port}" \
    | grep '^image' | sed -e "s/$port/PORT/"

# This is a test for NBD's bdrv_refresh_filename() implementation: It expects
# either host or path to be set, but it must not assume that they are set to
# strings in the options QDict
$QEMU_NBD -k "$PWD/42" -f raw --fork null-co://
$QEMU_IMG info 'json:{"driver": "nbd", "path": 42}' | grep '^image'
rm -f 42


echo
echo '=== SSH ==='
# SSH expects all of its arguments to be strings, except for @port, which is
# expected to be an integer

# So "0" should be converted to an integer here (instead of crashing)
$QEMU_IMG info 'json:{"driver": "ssh", "host": "localhost", "port": "0", "path": "/foo"}'
# The same, basically (all values for --image-opts are seen as strings in qemu)
$QEMU_IMG info --image-opts \
    driver=ssh,host=localhost,port=0,path=/foo

# This, however, should fail because of the wrong type
$QEMU_IMG info 'json:{"driver": "ssh", "host": "localhost", "port": 0.42, "path": "/foo"}'
# Not really the same: Here, "0.42" will be passed instead of 0.42, but still,
# qemu should not try to convert "0.42" to an integer
$QEMU_IMG info --image-opts \
    driver=ssh,host=localhost,port=0.42,path=/foo


echo
echo '=== blkdebug ==='
# blkdebug expects all of its arguments to be strings, but its
# bdrv_refresh_filename() implementation should not assume that they have been
# passed as strings in the original options QDict.
# So this should emit blkdebug:42:null-co:// as the filename:
touch 42
$QEMU_IMG info 'json:{"driver": "blkdebug", "config": 42,
                      "image.driver": "null-co"}' \
    | grep '^image'
rm -f 42


# success, all done
echo
echo '*** done'
rm -f $seq.full
status=0