[comment in setreuid() kernel implementation]
>>	/*
>>	 * we assume that the intent of setting ruid is to be able to get
>>	 * back ruid priviledge. So we make sure that we will be able to
>>	 * do so, but do not actually set the ruid.
>>	 */

> My understanding is that this is the way it's supposed to be,
> according to POSIX.

Does POSIX specify a setreuid() with this (mis)behavior?

					der Mouse

			    mouse@collatz.mcrcim.mcgill.edu

------------------------------------------------------------------------------