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#!/usr/bin/env bash
# nbdkit
# Copyright Red Hat
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# * Neither the name of Red Hat nor the names of its contributors may be
# used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
source ./functions.sh
set -e
set -x
set -u
requires_plugin sh
requires nbdsh --version
requires dd iflag=count_bytes </dev/null
sock=$(mktemp -u /tmp/nbdkit-test-sock.XXXXXX)
files="$sock export-name.pid"
rm -f $files
cleanup_fn rm -f $files
# Create an nbdkit sh plugin which reflects the export name back to
# the caller in the virtual device data and size.
define plugin <<'EOF'
case "$1" in
open)
# The export name is the handle. nbdkit-sh-plugin removes
# exactly one trailing \n for us, so we must add one in case
# the client's handle also has one.
printf '%s\n' "$3"
;;
get_size)
# Returns the length of the export name / handle in _bytes_.
export LC_ALL=C
echo ${#2}
;;
pread)
printf %s "$2" | dd skip=$4 count=$3 iflag=skip_bytes,count_bytes
;;
*) exit 2 ;;
esac
EOF
start_nbdkit -P export-name.pid -U $sock sh - <<<"$plugin"
# Try to read back various export names from the plugin.
for e in "" "test" "/" "//" " " "/ " "?" "ใในใ" "-n" '\\' $'\n' "%%" \
"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
do
export e sock
nbdsh -c '
import os
e = os.environ["e"]
h.set_export_name(e)
h.connect_unix(os.environ["sock"])
size = h.get_size()
print("size=%r e=%r" % (size, e))
assert size == len(e.encode("utf-8"))
# Zero-sized reads are not defined in the NBD protocol.
if size > 0:
buf = h.pread(size, 0)
print("buf=%r e=%r" % (buf, e))
assert buf == e.encode("utf-8")
'
done
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