How can a process find out its resource limits -- particularly rtprio

[Jonathan Ryshpan <jonrysh pacbell net>]

The functions sched_get_priority_max() and sched_get_priority_min()
return the max and min priorities available for the scheduling policy in
force (currently 99 and 1 for SCHED_RR).  

What method can be used to discover the max priority currently available
to the current process, as controlled by /etc/security/limits.conf (or
whatever controls it at the time of the inquiry)?  More generally, how
can a process discover what values are set in /etc/security/limits.conf?

In particular this is for the kernel 2.6.19-1.2895.fc6 running
(naturally) under Fedora Core 6.

I hope this is a stupid question.

Thanks - jon