#!/usr/bin/env bash
#
# Test hot plugging and unplugging with iothreads
#
# Copyright (C) 2019 Igalia, S.L.
# Author: Alberto Garcia <berto@igalia.com>
#
# 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=berto@igalia.com

seq=`basename $0`
echo "QA output created by $seq"

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

_supported_fmt generic
_supported_proto generic

do_run_qemu()
{
    echo Testing: "$@"
    $QEMU -nographic -qmp stdio -serial none "$@"
    echo
}

# Remove QMP events from (pretty-printed) output. Doesn't handle
# nested dicts correctly, but we don't get any of those in this test.
_filter_qmp_events()
{
    tr '\n' '\t' | sed -e \
	's/{\s*"timestamp":\s*{[^}]*},\s*"event":[^,}]*\(,\s*"data":\s*{[^}]*}\)\?\s*}\s*//g' \
	| tr '\t' '\n'
}

run_qemu()
{
    do_run_qemu "$@" 2>&1 | _filter_qmp | _filter_qmp_events
}

case "$QEMU_DEFAULT_MACHINE" in
  s390-ccw-virtio)
      virtio_scsi=virtio-scsi-ccw
      ;;
  *)
      virtio_scsi=virtio-scsi-pci
      ;;
esac

echo
echo === Unplug a SCSI disk and then plug it again ===
echo

run_qemu <<EOF
{ "execute": "qmp_capabilities" }
{ "execute": "blockdev-add", "arguments": {"driver": "null-co", "read-zeroes": true, "node-name": "hd0"}}
{ "execute": "object-add", "arguments": {"qom-type": "iothread", "id": "iothread0"}}
{ "execute": "device_add", "arguments": {"id": "scsi0", "driver": "${virtio_scsi}", "iothread": "iothread0"}}
{ "execute": "device_add", "arguments": {"id": "scsi-hd0", "driver": "scsi-hd", "drive": "hd0"}}
{ "execute": "device_del", "arguments": {"id": "scsi-hd0"}}
{ "execute": "device_add", "arguments": {"id": "scsi-hd0", "driver": "scsi-hd", "drive": "hd0"}}
{ "execute": "device_del", "arguments": {"id": "scsi-hd0"}}
{ "execute": "device_del", "arguments": {"id": "scsi0"}}
{ "execute": "blockdev-del", "arguments": {"node-name": "hd0"}}
{ "execute": "quit"}
EOF

echo
echo === Attach two SCSI disks using the same block device and the same iothread ===
echo

run_qemu <<EOF
{ "execute": "qmp_capabilities" }
{ "execute": "blockdev-add", "arguments": {"driver": "null-co", "read-zeroes": true, "node-name": "hd0", "read-only": true}}
{ "execute": "object-add", "arguments": {"qom-type": "iothread", "id": "iothread0"}}
{ "execute": "device_add", "arguments": {"id": "scsi0", "driver": "${virtio_scsi}", "iothread": "iothread0"}}
{ "execute": "device_add", "arguments": {"id": "scsi-hd0", "driver": "scsi-hd", "drive": "hd0"}}
{ "execute": "device_add", "arguments": {"id": "scsi-hd1", "driver": "scsi-hd", "drive": "hd0"}}
{ "execute": "device_del", "arguments": {"id": "scsi-hd0"}}
{ "execute": "device_del", "arguments": {"id": "scsi-hd1"}}
{ "execute": "device_del", "arguments": {"id": "scsi0"}}
{ "execute": "blockdev-del", "arguments": {"node-name": "hd0"}}
{ "execute": "quit"}
EOF

echo
echo === Attach two SCSI disks using the same block device but different iothreads ===
echo

run_qemu <<EOF
{ "execute": "qmp_capabilities" }
{ "execute": "blockdev-add", "arguments": {"driver": "null-co", "read-zeroes": true, "node-name": "hd0", "read-only": true}}
{ "execute": "object-add", "arguments": {"qom-type": "iothread", "id": "iothread0"}}
{ "execute": "object-add", "arguments": {"qom-type": "iothread", "id": "iothread1"}}
{ "execute": "device_add", "arguments": {"id": "scsi0", "driver": "${virtio_scsi}", "iothread": "iothread0"}}
{ "execute": "device_add", "arguments": {"id": "scsi1", "driver": "${virtio_scsi}", "iothread": "iothread1"}}
{ "execute": "device_add", "arguments": {"id": "scsi-hd0", "driver": "scsi-hd", "drive": "hd0", "bus": "scsi0.0"}}
{ "execute": "device_add", "arguments": {"id": "scsi-hd1", "driver": "scsi-hd", "drive": "hd0", "bus": "scsi1.0"}}
{ "execute": "device_del", "arguments": {"id": "scsi-hd0"}}
{ "execute": "device_add", "arguments": {"id": "scsi-hd1", "driver": "scsi-hd", "drive": "hd0", "bus": "scsi1.0"}}
{ "execute": "device_del", "arguments": {"id": "scsi-hd1"}}
{ "execute": "device_del", "arguments": {"id": "scsi0"}}
{ "execute": "device_del", "arguments": {"id": "scsi1"}}
{ "execute": "blockdev-del", "arguments": {"node-name": "hd0"}}
{ "execute": "quit"}
EOF

echo
echo === Attach a SCSI disks using the same block device as a NBD server ===
echo

run_qemu <<EOF
{ "execute": "qmp_capabilities" }
{ "execute": "blockdev-add", "arguments": {"driver": "null-co", "read-zeroes": true, "node-name": "hd0", "read-only": true}}
{ "execute": "nbd-server-start", "arguments": {"addr":{"type":"unix","data":{"path":"$TEST_DIR/nbd"}}}}
{ "execute": "nbd-server-add", "arguments": {"device":"hd0"}}
{ "execute": "object-add", "arguments": {"qom-type": "iothread", "id": "iothread0"}}
{ "execute": "device_add", "arguments": {"id": "scsi0", "driver": "${virtio_scsi}", "iothread": "iothread0"}}
{ "execute": "device_add", "arguments": {"id": "scsi-hd0", "driver": "scsi-hd", "drive": "hd0", "bus": "scsi0.0"}}
{ "execute": "quit"}
EOF

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