questions about File System Switch

[A. Lester Buck]

I have seen a number of postings which have mentioned the
File System Switch (FSS), and Bach has some general sections
on file system abstractions.  Is FSS fully documented in
some AT&T manual?  What release of System V introduced FSS?
Is it always there, or is it a vendor option that can be
left out?  (I only have S5R2 experience.)

Is adding a new filesystem on the same level as adding a
device driver to the kernel? For example, can a binary site
use some type of link kit to add filesystem routines without
source code?

Or is this a "Don't try this at home, kids!" operation?

I was wondering about adding a CD-ROM filesystem, which has an
ISO or High Sierra standard format and a 2K physical blocksize.


Thanks for any information,

-- 
A. Lester Buck		...!uhnix1!moray!siswat!buck