Is there a way to enumerate Alternate Data Streams?

I'm looking for a way to enumerate Alternate Data Streams from linux, specifically from a filesystem mounted via cifs.

Mounting a windows share via cifs allows me to read, write and delete alternate data streams from linux (like indicated at
http://article.gmane.org/gmane.linux.kernel.cifs/7228/match=alternate+data+streams).

However I couldn't find a way to actually query if there are alternate data streams and / or enumerate them. Even when mounting with "user_xattr" option and using getfattr there was no information about alternate streams.

A very similiar if not identical question was asked quite some time ago at
http://linux-cifs.vger.kernel.narkive.com/W8aaTElO/alternate-data-streams but I couldn't manage to really find an answer.

A quick glimpse through kernel source gave references in comments to "proc/fs/cifs/streamstoxattr" but this seems not yet implemented - at least searches yield nothing about how to set "proc/fs/cifs/streamstoxattr".

So is there any ioctl, option/configuration or "well known" attribute name to get a list of alternate data streams?

Markus