dlopen/dlclose behaviour - real reloading from disk required.

[PrzemysÅaw Firszt <przemo at firszt dot eu>]

Hi,
I'm working on an input driver for xorg. Xorg server uses dlopen/dlclose
from glibc to load module driver. I want to modify/update to driver
module without shutting down xorg. 

Currently situation looks like that:
1. xorg started
2. load the input driver module (using whole xorg mechanism, but it goes
down to dlopen)
3. test the driver
4. unload the driver module (as above, but dlclose)
5. modify the driver
6. reinstall the driver module (or remove from disk/reinstall - doesn't
make any difference)
7. load the input driver
I'm expecting to see _new_ version of the driver loaded at point 7, but
instead the old version is loaded. I presume that a copy of the old
version of the driver is somewhere in the memory and it gets loaded
instead of my new driver.

I used lsof to be sure that nothing locks the driver module. I played
with ldconfig -n, but it didn't help.

How can I force real reloading of the modified version?

I can provide a test case if someone wants to check it.
--
Cheers,
Przemo