[libvirt] [PATCH v2] security: aa-helper: fix static defined vfio MDEVs

[Christian Ehrhardt]

virt-aa-helper needs to grant QEMU access to VFIO MDEV devices.

This extends commit 74e86b6b which only covered PCI hostdevs for VFIO-PCI
assignment by now also covering vfio MDEVs.
It has still the same limitations regarding the device lifecycle, IOW we're
unable to predict the actual VFIO device being created, thus we need
wildcards.

Also note that the hotplug case, where apparmor is able to detect the actual
VFIO device during runtime, is already covered by commit 606afafb.

Signed-off-by: Christian Ehrhardt <christian.ehrhardt at canonical.com>
Reviewed-by: Erik Skultety <eskultet at redhat.com>
Reviewed-by: Boris Fiuczynski <fiuczy at linux.ibm.com>
---
 src/security/virt-aa-helper.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/security/virt-aa-helper.c b/src/security/virt-aa-helper.c
index 03cc15c9d3..c7488432d6 100644
--- a/src/security/virt-aa-helper.c
+++ b/src/security/virt-aa-helper.c
@@ -1105,6 +1105,23 @@ get_files(vahControl * ctl)
                 break;
             }
 
+            case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_MDEV: {
+                virDomainHostdevSubsysMediatedDevPtr mdevsrc = &dev->source.subsys.u.mdev;
+                switch ((virMediatedDeviceModelType) mdevsrc->model) {
+                    case VIR_MDEV_MODEL_TYPE_VFIO_PCI:
+                    case VIR_MDEV_MODEL_TYPE_VFIO_AP:
+                    case VIR_MDEV_MODEL_TYPE_VFIO_CCW:
+                        needsVfio = true;
+                        break;
+                    case VIR_MDEV_MODEL_TYPE_LAST:
+                    default:
+                        virReportEnumRangeError(virMediatedDeviceModelType,
+                                                mdevsrc->model);
+                        break;
+                }
+                break;
+            }
+
             case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI: {
                 virPCIDevicePtr pci = virPCIDeviceNew(
                            dev->source.subsys.u.pci.addr.domain,
-- 
2.17.1