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#
# Copyright (c) 2021 Nutanix Inc. All rights reserved.
#
# Authors: Thanos Makatos <thanos.makatos@nutanix.com>
#
# 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 Nutanix 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 THE COPYRIGHT HOLDERS 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 <COPYRIGHT HOLDER> BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICESLOSS 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.
#
from libvfio_user import *
import errno
from unittest.mock import patch
ctx = None
def setup_function(function):
global ctx, sock
ctx = prepare_ctx_for_dma()
assert ctx is not None
sock = connect_client(ctx)
def teardown_function(function):
global ctx
vfu_destroy_ctx(ctx)
@patch('libvfio_user.quiesce_cb')
def test_device_quiesced_no_quiesce_requested(mock_quiesce):
"""
Checks that vfu_device_quiesce returns an error if called when there is
no pending quiesce operation.
"""
global ctx
ret = vfu_device_quiesced(ctx, 0)
assert ret == -1
assert c.get_errno() == errno.EINVAL
assert mock_quiesce.call_count == 0
@patch('libvfio_user.quiesce_cb', side_effect=fail_with_errno(errno.ENOTTY))
def test_device_quiesce_error(mock_quiesce):
"""
Checks that if the device quiesce callback fails then the operation
that requested it also fails with the same error.
"""
global ctx, sock
payload = vfio_user_dma_map(argsz=len(vfio_user_dma_map()),
flags=(VFIO_USER_F_DMA_REGION_READ |
VFIO_USER_F_DMA_REGION_WRITE),
offset=0, addr=0x10000, size=0x1000)
msg(ctx, sock, VFIO_USER_DMA_MAP, payload, errno.ENOTTY)
@patch('libvfio_user.dma_register')
@patch('libvfio_user.quiesce_cb', side_effect=fail_with_errno(errno.EBUSY))
def test_device_quiesce_error_after_busy(mock_quiesce, mock_dma_register):
"""
Checks that the device fails to quiesce after it was busy quiescing.
"""
global ctx, sock
payload = vfio_user_dma_map(argsz=len(vfio_user_dma_map()),
flags=(VFIO_USER_F_DMA_REGION_READ |
VFIO_USER_F_DMA_REGION_WRITE),
offset=0, addr=0x10000, size=0x1000)
msg(ctx, sock, VFIO_USER_DMA_MAP, payload, rsp=False,
expect_run_ctx_errno=errno.EBUSY)
ret = vfu_device_quiesced(ctx, errno.ENOTTY)
assert ret == 0
mock_dma_register.assert_not_called()
# check that the DMA region was NOT added
count, sgs = vfu_addr_to_sg(ctx, 0x10000, 0x1000)
assert count == -1
assert c.get_errno() == errno.ENOENT
# ex: set tabstop=4 shiftwidth=4 softtabstop=4 expandtab: #
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