[vbox-dev] VBOX_HGCM_REQ_CANCELLED returned?

[Huihong Luo]

Hi,
 
I am trying to do a guest addition driver to traverse the host folders, (similar to VBoxSF). Sometimes, when traversing a large folder (e.g., c:\windows\system32), I got an error code from VbglHGCMCall() with VERR_VBGL_IOCTL_FAILED.
 
I digged a bit into the VBoxGuest.sys, and found out the root cause was due to 
VbglHGCMCall() in HGCMInternal.c returning the following code:
 
VBOX_HGCM_REQ_CANCELLED  => 
VERR_INTERRUPTED
 
This error does not occur when debugging. It seems that it only occurs when intensive opertations are performed. When I traverse the host c:\windows\system32, the error occurs for several items from total of about 3000 dir entries.
 
Any ideas? Due to the host side not responding on time?
 
Thanks,
 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.virtualbox.org/pipermail/vbox-dev/attachments/20080801/4e9c735a/attachment.html>