[Samba] variable substitution ?

[ipguy]

is anyone aware how one might grab the "Full Name" variable (if it even 
exists) from a PDC, if Samba is setup as a domain member server using 
winbind, so the variable can be used in preexec scripts ?

e.g

preexec = mkdir /data/%u 

the above will make a dir in the data dir before connecting to the share. the 
problem with this situation is the username is not always the "full name" 
so the creation of the %u dir may not be specific.

if one does a "getend passwd" the full name can be seen but how does one 
use this ?