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crosvm/seccomp/x86_64/serial.policy

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devices: jail serial device This change plumbs the jail throughout the arch specific device creation process. It also adds a custom callback support for the ProxyDevice so that the main process can interrupt the child serial process when it has incoming bytes. TEST=crosvm run BUG=None Change-Id: I6af7d2cb0acbba9bf42eaeeb294cee2bce4a1f36 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1752589 Reviewed-by: Dylan Reid <dgreid@chromium.org> Reviewed-by: Daniel Verkamp <dverkamp@chromium.org> Tested-by: kokoro <noreply+kokoro@google.com> Tested-by: Zach Reizner <zachr@chromium.org> Commit-Queue: Zach Reizner <zachr@chromium.org>
2019-08-13 18:20:14 +00:00
# Copyright 2019 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.
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>
2022-06-15 07:58:14 +00:00
# Syscalls specific to the serial device. This policy file is not meant to be used directly, but
# rather to be included from another one.
seccomp: remove redundant unconditional rules Minijail's policy compiler complains when there's multiple unconditional rules for a syscall. In most cases the rules are redundant to common_device.policy. I don't know what to do about the intentionally contradictory rules for open and openat, other than to remove then from the common device policy and add it to all the others. BUG=None TEST=Ran compile_seccomp_policy.py until it stopped complaining. Change-Id: I6813dd1e0b39e975415662bd7de74c25a1be9eb3 Signed-off-by: Matt Delco <delco@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1918607 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Dylan Reid <dgreid@chromium.org>
2019-11-15 01:48:44 +00:00
crosvm: Support UnixDatagram sockets for serial output. BUG=chromium:1053847 TEST=Listen to the socket from VmLogForwarder, observer messages forwarded into separate output file. Change-Id: Ia472e34b78db599e91f63e72a13bf8539d0d6312 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2287077 Tested-by: kokoro <noreply+kokoro@google.com> Tested-by: Nicholas Verne <nverne@chromium.org> Reviewed-by: Daniel Verkamp <dverkamp@chromium.org> Commit-Queue: Nicholas Verne <nverne@chromium.org> Auto-Submit: Nicholas Verne <nverne@chromium.org>
2020-07-08 07:19:55 +00:00
connect: 1
bind: 1
seccomp: remove redundant unconditional rules Minijail's policy compiler complains when there's multiple unconditional rules for a syscall. In most cases the rules are redundant to common_device.policy. I don't know what to do about the intentionally contradictory rules for open and openat, other than to remove then from the common device policy and add it to all the others. BUG=None TEST=Ran compile_seccomp_policy.py until it stopped complaining. Change-Id: I6813dd1e0b39e975415662bd7de74c25a1be9eb3 Signed-off-by: Matt Delco <delco@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1918607 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Dylan Reid <dgreid@chromium.org>
2019-11-15 01:48:44 +00:00
open: return ENOENT
openat: return ENOENT
Specify prctl's policy only once per device The libminijail version in AOSP complains when there are multiple entries for the same system call, which was the case for virtio-fs's policy. BUG=b/185811304 Change-Id: I389c07c86e7d79f16e4f47a893abad598033352a Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2837307 Commit-Queue: Jorge Moreira Broche <jemoreira@google.com> Tested-by: Jorge Moreira Broche <jemoreira@google.com> Reviewed-by: Dylan Reid <dgreid@chromium.org>
2021-04-19 19:59:38 +00:00
prctl: arg0 == PR_SET_NAME
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