Thanks for the pointer. I checked there, and it looks like they've found the problem's source, but no solution has yet been discussed, save hacking the source, obviously. Is there some other way to accomplish this, or is that my only option until the problem is fixed? I'm currently working with Linux and Solaris; an answer that would work with either of those would be great. Could something written in XS emulate it portably?
The system I'm writing (a script/module combination) is going to be used on machines I don't control, so fixing the source isn't possible. If I could somehow use XS to provide myself with a subroutine that'd do it for me, my problem would be solved in a way that would work for the people who're going to be using it.