#!/usr/bin/env bash
#
# Block job co-routine race condition test.
#
# See: https://bugzilla.redhat.com/show_bug.cgi?id=1508708
#
# Copyright (C) 2017 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=jcody@redhat.com

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

status=1    # failure is the default!

_cleanup()
{
    _cleanup_qemu
    rm -f "${TEST_IMG}" "${BACKING_IMG}"
}
trap "_cleanup; exit \$status" 0 1 2 3 15

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

_supported_fmt qcow2 qed
_supported_proto file
_supported_os Linux

BACKING_IMG="${TEST_DIR}/backing.img"
TEST_IMG="${TEST_DIR}/test.img"

${QEMU_IMG} create -f $IMGFMT "${BACKING_IMG}" 512M | _filter_img_create
${QEMU_IMG} create -f $IMGFMT -F $IMGFMT "${TEST_IMG}" -b "${BACKING_IMG}" 512M | _filter_img_create

${QEMU_IO} -c "write -P 0xa5 512 300M" "${BACKING_IMG}" | _filter_qemu_io

case "$QEMU_DEFAULT_MACHINE" in
  s390-ccw-virtio)
      virtio_scsi="-device virtio-scsi-ccw,id=scsi0,iothread=iothread0"
      ;;
  *)
      virtio_scsi="-device pci-bridge,id=bridge1,chassis_nr=1,bus=pci.0
          -device virtio-scsi-pci,bus=bridge1,addr=0x1f,id=scsi0,iothread=iothread0"
      ;;
esac

echo
echo === Starting QEMU VM ===
echo
qemu_comm_method="qmp"
_launch_qemu -object iothread,id=iothread0 $virtio_scsi \
             -drive file="${TEST_IMG}",media=disk,if=none,cache=$CACHEMODE,id=drive_sysdisk,format=$IMGFMT \
             -device scsi-hd,drive=drive_sysdisk,bus=scsi0.0,id=sysdisk,bootindex=0
h1=$QEMU_HANDLE

_send_qemu_cmd $h1 "{ 'execute': 'qmp_capabilities' }" 'return'

echo
echo === Sending stream/cancel, checking for SIGSEGV only  ===
echo
for (( i=1;i<500;i++ ))
do
    mismatch_only='y' qemu_error_no_exit='n' _send_qemu_cmd $h1 \
                       "{
                            'execute': 'block-stream',
                            'arguments': {
                                'device': 'drive_sysdisk',
                                'speed': 10000000,
                                'on-error': 'report',
                                'job-id': 'job-$i'
                             }
                        }
                        {
                            'execute': 'block-job-cancel',
                            'arguments': {
                                'device': 'job-$i'
                             }
                        }" \
                       "{.*{.*}.*}"  # should match all well-formed QMP responses
done

silent='y' _send_qemu_cmd $h1  "{ 'execute': 'quit' }" 'return'

echo "$i iterations performed"

echo "*** done"
rm -f $seq.full
status=0