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#
# Copyright (c) 2021 Nutanix Inc. All rights reserved.
#
# Authors: John Levon <john.levon@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
# 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.
#
from libvfio_user import *
import ctypes as c
import errno
import os
import sys
ctx = None
sock = None
argsz = len(vfio_irq_set())
def test_request_errors_setup():
global ctx, sock
ctx = vfu_create_ctx(flags=LIBVFIO_USER_FLAG_ATTACH_NB)
assert ctx != None
ret = vfu_pci_init(ctx)
assert ret == 0
ret = vfu_setup_device_nr_irqs(ctx, VFU_DEV_MSIX_IRQ, 2048)
assert ret == 0
ret = vfu_realize_ctx(ctx)
assert ret == 0
sock = connect_client(ctx)
def test_too_small():
# struct vfio_user_header
hdr = struct.pack("HHIII", 0xbad1, VFIO_USER_DEVICE_SET_IRQS,
SIZEOF_VFIO_USER_HEADER - 1, VFIO_USER_F_TYPE_COMMAND, 0)
sock.send(hdr)
vfu_run_ctx(ctx)
get_reply(sock, expect=errno.EINVAL)
def test_too_large():
# struct vfio_user_header
hdr = struct.pack("HHIII", 0xbad1, VFIO_USER_DEVICE_SET_IRQS,
SERVER_MAX_MSG_SIZE + 1, VFIO_USER_F_TYPE_COMMAND, 0)
sock.send(hdr)
vfu_run_ctx(ctx)
get_reply(sock, expect=errno.EINVAL)
def test_unsolicited_reply():
# struct vfio_user_header
hdr = struct.pack("HHIII", 0xbad2, VFIO_USER_DEVICE_SET_IRQS,
SIZEOF_VFIO_USER_HEADER, VFIO_USER_F_TYPE_REPLY, 0)
sock.send(hdr)
vfu_run_ctx(ctx)
get_reply(sock, expect=errno.EINVAL)
def test_bad_command():
hdr = vfio_user_header(VFIO_USER_MAX, size=1)
sock.send(hdr + b'\0')
vfu_run_ctx(ctx)
get_reply(sock, expect=errno.EINVAL)
def test_no_payload():
hdr = vfio_user_header(VFIO_USER_DEVICE_SET_IRQS, size=0)
sock.send(hdr)
vfu_run_ctx(ctx)
get_reply(sock, expect=errno.EINVAL)
def test_bad_request_closes_fds():
payload = vfio_irq_set(argsz=argsz, flags=VFIO_IRQ_SET_ACTION_TRIGGER |
VFIO_IRQ_SET_DATA_BOOL, index=VFU_DEV_MSIX_IRQ,
start=0, count=1)
fd1 = eventfd()
fd2 = eventfd()
hdr = vfio_user_header(VFIO_USER_DEVICE_SET_IRQS, size=len(payload))
sock.sendmsg([hdr + payload], [(socket.SOL_SOCKET, socket.SCM_RIGHTS,
struct.pack("II", fd1, fd2))])
vfu_run_ctx(ctx)
get_reply(sock, expect=errno.EINVAL)
#
# It's a little cheesy, but this is just ensuring no fd's remain open past
# the one we just allocated; i.e. free_msg() freed the fds it got.
#
test_fd = eventfd()
assert test_fd == fd2 + 1
os.close(test_fd)
os.close(fd1)
os.close(fd2)
def test_request_errors_cleanup():
vfu_destroy_ctx(ctx)
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