Changeset 67759 in vbox

Timestamp:

Jul 3, 2017 2:07:23 PM (7 years ago)

Author:

vboxsync

Message:

bugref:8533: Additions/x11: fully support VMSVGA
Use AcquireGuestCaps in the vmsvga VBoxClient service.

This change makes the VBoxClient vmsvga service use the new AcquireGuestCaps
function in the R3 guest library to prevent other clients waiting for
display events. We should change the driver to make this root-only.

File:

• trunk/src/VBox/Additions/x11/VBoxClient/display-svga.cpp (modified) (1 diff)

trunk/src/VBox/Additions/x11/VBoxClient/display-svga.cpp

@@ -362 +362 @@
     if (RT_FAILURE(rc))
         VBClFatalError(("Failed to request display change events, rc=%Rrc\n", rc));
-    rc = VbglR3SetGuestCaps(VMMDEV_GUEST_SUPPORTS_GRAPHICS, 0);
+    rc = VbglR3AcquireGuestCaps(VMMDEV_GUEST_SUPPORTS_GRAPHICS, 0, false);
+    if (rc == VERR_RESOURCE_BUSY)  /* Someone else has already acquired it. */
+        return VINF_SUCCESS;
     if (RT_FAILURE(rc))
         VBClFatalError(("Failed to register resizing support, rc=%Rrc\n", rc));