dnotify doesn't deliver signals when user changes

[Mark Weaver]

I've been playing around trying to get samba to support "which files 
changed" notifications rather than just returning 
STATUS_NOTIFY_ENUM_DIR.  It appears that I have hit a problem with linux 
dnotify however (kernel is 2.4.26 although from the changelogs no 
dnotify fixes have popped up to the latest version).

Basically it all works fine until change_to_root_user is hit (popups up 
in a few places: idle timeout/log file size processing/etc).  As soon as 
the UID is changed, dnotify stops delivering file change signals.  As 
far as I can tell, this would also affect the stock code.

Does anyone know if this is a problem with dnotify, samba, or both or 
could suggest a reasonable workaround?

Thanks,

Mark

As an aside, the motivation for this is to try to get IIS5, which is 
buggy wrt to file change notifications, to work with samba so that a 
samba box can be used as a common root for a cluster.  I'm using a patch 
from Juergen Hasch as the base for this, found at:

http://groups-beta.google.com/group/mailing.unix.samba-technical/browse_thread/thread/47d4144632281dd1/690f1645ef983072?q=juergen+hasch+samba+notify#690f1645ef983072