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From: knop@dutesta.UUCP (Peter Knoppers)
Newsgroups: net.unix-wizards
Subject: Re: magic numbers (suid shell scripts)
Message-ID: <221@dutesta.UUCP>
Date: Sun, 8-Apr-84 08:53:06 EST
Article-I.D.: dutesta.221
Posted: Sun Apr  8 08:53:06 1984
Date-Received: Mon, 9-Apr-84 06:13:31 EST
References: <1094@utah-gr.UUCP>
Organization: Delft univ. of tech., the Netherlands
Lines: 11

We have a PWB/UNIX system running on some PDP11/45's.  Our shell is
altered to operate on set-uid scripts.  The shell is set-uid to root.
On entry it checks the mode of the script.  If the s-bit is set, the
shell does a setuid to the user id of the file, if not the shell
changes its privileges back to those of the real user.

Peter Knoppers, Delft Univ. of Technology
..!{decvax,philabs}!mcvax!dutesta!knop
-- 
Peter Knoppers, Delft Univ. of Technology
..!{decvax,philabs}!mcvax!dutesta!knop