Determining which kernel functions are exported

[Timur Tabi <timur.tabi@xxxxxxxxxxx>]

I have a driver that looks up the entry points for various system call 
functions (sys_read, sys_close, etc).  My code works well enough, but 
the problem is that the list of functions that are exported varies from 
kernel to kernel.  For instance, sys_lseek() is exported in Suse 
Enterprise 9, but it's not exported in Red Hat 9.

Is there a way for me to determine whether a particular function is 
exported, without causing a load failure.  If I try to reference 
sys_lseek() when it's not exported, then insmod will fail.

I know about the query_module() function, but that's not callable from 
within a driver.  I'm looking for a function like that that's callable 
from within a driver.

--
Timur Tabi
Staff Software Engineer
timur.tabi@xxxxxxxxxxx

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