For Windows authenticated users, is it possible to map their Windows home drive without using it as the root?

[Sparky]

I asked this directly to tech support as well, but maybe someone here
can help.

In short, I want my Windows users to access their Windows home
directory, but not as their ftp home directory. I'd rather have an ftp
root with multiple shared directories mapped into it and also a HOME
directory which is their Windows home.

Unfortunately our Windows homes are not uniform like \\standardUNC
\username. If they were it would be easy. I wish there were a variable
like %windowsuserhome%.

Suggestions?

[FTPServerTools]

Normally under windows there is no such variable.
having a root with multiple dirs in it is rather standard tho. But to
get the home mapping done I'd first need a more detailed example (or
better 2).
Example:
I assume you have a user john and one joe. You want to map john to d:
\john and joe to d:\joe25
This is indeed difficult, since the username is not standard mapped.
BUT: as far as I see it can be done using your own coded integration
dll. The is a function called SUUAGetAttribute that gives the
attribute back. Check out the functions.cpp file in the serv-u dir
(only serv-u 9 and up, servu 7 and 8 do not support dll plugins).