[PATCH 4/4] virt-aa-helper: generate rules for nvdimm memory

[Christian Ehrhardt <christian.ehrhardt@xxxxxxxxxxxxx>]

nvdimm memory is backed by a path on the host. This currently works only via
hotplug where the AppArmor label is created via the domain label callbacks.

This adds the virt-aa-helper support for nvdimm memory devices to generate
rules for the needed paths from the initial guest definition as well.

Example in domain xml:
  <memory model='nvdimm'>
    <source>
      <path>/tmp/nvdimm-base</path>
    </source>
    <target>
     <size unit='KiB'>524288</size>
     <node>0</node>
    </target>
  </memory>
Works to start now and creates:
  "/tmp/nvdimm-base" rw,

Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1757085

Signed-off-by: Christian Ehrhardt <christian.ehrhardt@xxxxxxxxxxxxx>
---
 src/security/virt-aa-helper.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/security/virt-aa-helper.c b/src/security/virt-aa-helper.c
index 1fc482d..0d0db0b 100644
--- a/src/security/virt-aa-helper.c
+++ b/src/security/virt-aa-helper.c
@@ -1176,6 +1176,13 @@ get_files(vahControl * ctl)
         }
     }
 
+    for (i = 0; i < ctl->def->nmems; i++) {
+        if (ctl->def->mems[i]->model == VIR_DOMAIN_MEMORY_MODEL_NVDIMM) {
+            if (vah_add_file(&buf, ctl->def->mems[i]->nvdimmPath, "rw") != 0)
+                goto cleanup;
+        }
+    }
+
     if (ctl->def->virtType == VIR_DOMAIN_VIRT_KVM) {
         for (i = 0; i < ctl->def->nnets; i++) {
             virDomainNetDefPtr net = ctl->def->nets[i];
-- 
2.7.4

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