crosvm/seccomp/x86_64/coiommu_device.policy
Alexandre Courbot c553d1c283 seccomp: define naming rules for policy files
We are going to use separate policy files per device for the following scenarios:

1) Regular in-VMM virtio device,
2) Virtio device over vhost-user,
3) Virtio device over Vvu.

Each of these scenarios require slightly different policies as a jailed
device process needs to allow not only the system calls necessary for
the device to function, but also those required by the virtio transport
in use.

This CL adds a README.md file to the seccomp directory that details the
naming and policy inclusion rules, and updates the serial, xhci and
coiommu policies to follow the naming scheme.

Vhost-user and VVU policy files will be added along with support for
jailing devices when they are in use.

BUG=b:217480043
TEST=serial device works with `crosvm run`.

Change-Id: I6d454aa6e05d00691fe3346e822ed1fc7b24aed8
Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/3706490
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
2022-06-17 04:35:09 +00:00

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# Copyright 2022 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
@include /usr/share/policy/crosvm/common_device.policy
# VFIO_IOMMU_MAP/UNMAP_DMA
ioctl: arg1 == 0x3B71 || arg1 == 0x3B72
prctl: arg0 == PR_SET_NAME
timerfd_create: 1
timerfd_settime: 1
timerfd_gettime: 1