[libvirt] [PATCH 08/12] apparmor, libvirt-qemu: add generic base vfio device

Christian Ehrhardt christian.ehrhardt at canonical.com
Tue Dec 19 15:03:41 UTC 2017

vfio devices are generated on the fly, but the generic base is missing.

The base vfio has not much functionality but to provide a custom
container by opening this path.
See https://www.kernel.org/doc/Documentation/vfio.txt for more.

Current access by qemu is "wr":
[ 2652.756712] audit: type=1400 audit(1491303691.719:25):
apparmor="DENIED" operation="open"
name="/dev/vfio/vfio" pid=8486 comm="qemu-system-x86"
requested_mask="wr" denied_mask="wr" fsuid=64055 ouid=0

Bug-Ubuntu: https://bugs.launchpad.net/bugs/1678322

Signed-off-by: Christian Ehrhardt <christian.ehrhardt at canonical.com>
Signed-off-by: Stefan Bader <stefan.bader at canonical.com>
 examples/apparmor/libvirt-qemu | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/examples/apparmor/libvirt-qemu b/examples/apparmor/libvirt-qemu
index 5d811f9..eb4d58c 100644
--- a/examples/apparmor/libvirt-qemu
+++ b/examples/apparmor/libvirt-qemu
@@ -212,3 +212,6 @@
   # silence refusals to open lttng files (see LP: #1432644)
   deny /dev/shm/lttng-ust-wait-* r,
   deny /run/shm/lttng-ust-wait-* r,
+  # for vfio (LP: #1678322)
+  /dev/vfio/vfio rw,

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