Not sure where to begin on trying to help you here. You can get information on directories backed up. The select you want are asking for is something like this:
select ll_name from from backups where type='DIR' and node_name='CLIENTX'
PLEASE NOTE: I don't recommend using selects from the backup table to generate reports and such. It's a crude way of gathering data, and the backup table is typically huge. In short, I think this is a bad idea, and I'm sure others on this list would agree.
It's probably much easier to obtain a "directory listing" from a client end script since TSM backs up basically everything unless told to exlude directory, a, b, c. etc.
That's my 2 cents...hope it points you in the right direction. Maybe more clarity would provide more insight into how help you achieve your goal?