[PATCH v4 05/20] qemu-cgroup: allow accel rendernode access

[marcandre.lureau@xxxxxxxxxx]

From: Marc-André Lureau <marcandre.lureau@xxxxxxxxxx>

Signed-off-by: Marc-André Lureau <marcandre.lureau@xxxxxxxxxx>
Reviewed-by: Ján Tomko <jtomko@xxxxxxxxxx>
---
 src/qemu/qemu_cgroup.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index ecd96efb0a..eb6f993d8e 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -503,6 +503,25 @@ qemuSetupGraphicsCgroup(virDomainObjPtr vm,
 }
 
 
+static int
+qemuSetupVideoAccelCgroup(virDomainObjPtr vm,
+                          virDomainVideoAccelDefPtr def)
+{
+    qemuDomainObjPrivatePtr priv = vm->privateData;
+    int ret;
+
+    if (!def->rendernode ||
+        !virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_DEVICES))
+        return 0;
+
+    ret = virCgroupAllowDevicePath(priv->cgroup, def->rendernode,
+                                   VIR_CGROUP_DEVICE_RW, false);
+    virDomainAuditCgroupPath(vm, priv->cgroup, "allow", def->rendernode,
+                             "rw", ret);
+    return ret;
+}
+
+
 static int
 qemuSetupBlkioCgroup(virDomainObjPtr vm)
 {
@@ -803,6 +822,11 @@ qemuSetupDevicesCgroup(virDomainObjPtr vm)
             goto cleanup;
     }
 
+    for (i = 0; i < vm->def->nvideos; i++) {
+        if (qemuSetupVideoAccelCgroup(vm, vm->def->videos[i]->accel) < 0)
+            goto cleanup;
+    }
+
     for (i = 0; i < vm->def->ninputs; i++) {
         if (qemuSetupInputCgroup(vm, vm->def->inputs[i]) < 0)
             goto cleanup;
-- 
2.23.0

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