DACLs for offline files

Is there a way to retrieve DACLs for offline files (client-side cached)
when the client is not connected to the server?

When I call GetSecurityInfo or GetNamedSecurityInfo for such files, the
call returns ERROR_NOT_SUPPORTED (50). Similarly, those files have no
"Security" tab in the Properties dialog.

I looked at the Offline Files COM APIs
(http://msdn.microsoft.com/en-us/libr...92(VS.85).aspx) , but I
couldn't find anything about file security. Those APIs only report file
attributes.

I noticed that if I do not have write permissions to a file, then I
cannot write to it even when the file is offline, so those security
settings must sit somewhere.

Any help will be greatly appreciated.
Ryjek