Hi Everyone, In libproc, there is a flavour for proc_pidinfo() PROC_PIDUNIQIDENTIFIERINFO, which as the name suggests, returns a struct of values that uniquely identify a process - more reliably than a pid. In particular, it seems to have a 64 bit value that appears to be unique forever (or at least until system restart), thus shouldn't suffer from pid reuse races. The problem is that this interface is gated behind #ifdef PRIVATE, and as such is pretty much the antithesis of 'published api'. So I guess my question is, is there a 'legit' way of accessing this value (or an equivalent) ? The call seems to work fine, and the number appears unique.. thanks, nick