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From: clay@titan.tsd.arlut.utexas.edu (Clay Johnson)
Newsgroups: comp.unix
Subject: sun/unix/c problem
Message-ID: <2177@megadon.UUCP>
Date: 10 Oct 90 04:05:54 GMT
Sender: clp@megadon.UUCP
Organization: Applied Research Laboratories, UT Austin.
Lines: 9
Approved: clp@megadon.UUCP
Posted-Date: 5 Oct 90 19:59:01 GMT


Once a program that executes in set-user ID mode has changed its
effective uid to the real uid, how can it change it back?  

setreuid(2) (sun 4.0 documentation) says that this can be done by
restoring the saved set-user ID from execve(2), but execve(2) does not
explain how to do it.

Thank you.