[libvirt] [PATCH 1/2] security: aa-helper: nvidia rules for gl devices

[Christian Ehrhardt]

Further testing with different devices showed that we need more rules
to drive gl backends with nvidia cards. Related denies look like:

apparmor="DENIED" operation="open"
  name="/usr/share/egl/egl_external_platform.d/"
  requested_mask="r"
apparmor="DENIED" operation="open"
  name="/proc/modules"
  requested_mask="r"
apparmor="DENIED" operation="open"
  name="/proc/driver/nvidia/params"
  requested_mask="r"
apparmor="DENIED" operation="mknod"
  name="/dev/nvidiactl"
  requested_mask="c"

Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1817943

Signed-off-by: Christian Ehrhardt <christian.ehrhardt at canonical.com>
---
 src/security/virt-aa-helper.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/security/virt-aa-helper.c b/src/security/virt-aa-helper.c
index e9120213ff..13b507ff69 100644
--- a/src/security/virt-aa-helper.c
+++ b/src/security/virt-aa-helper.c
@@ -1279,6 +1279,11 @@ get_files(vahControl * ctl)
         virBufferAddLit(&buf, "  \"/usr/share/drirc.d/{,*.conf}\" r,\n");
         virBufferAddLit(&buf, "  \"/etc/glvnd/egl_vendor.d/{,*}\" r,\n");
         virBufferAddLit(&buf, "  \"/usr/share/glvnd/egl_vendor.d/{,*}\" r,\n");
+        virBufferAddLit(&buf, "  \"/usr/share/egl/egl_external_platform.d/\" r,\n");
+        virBufferAddLit(&buf, "  \"/usr/share/egl/egl_external_platform.d/*\" r,\n");
+        virBufferAddLit(&buf, "  \"/proc/modules\" r,\n");
+        virBufferAddLit(&buf, "  \"/proc/driver/nvidia/params\" r,\n");
+        virBufferAddLit(&buf, "  \"/dev/nvidiactl\" rw,\n");
         virBufferAddLit(&buf, "  # Probe DRI device attributes\n");
         virBufferAddLit(&buf, "  \"/dev/dri/\" r,\n");
         virBufferAddLit(&buf, "  \"/sys/devices/*/*/{uevent,vendor,device,subsystem_vendor,subsystem_device}\" r,\n");
-- 
2.17.1