Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!samsung!uunet!cbmvax!ag
From: ag@cbmvax.commodore.com (Keith Gabryelski)
Newsgroups: comp.unix.wizards
Subject: Re: setuid?
Message-ID: <11440@cbmvax.commodore.com>
Date: 8 May 90 20:42:09 GMT
References: <11410@cbmvax.commodore.com> <3320@auspex.auspex.com>
Reply-To: ag@cbmvax (Keith Gabryelski)
Organization: Commodore-Amiga Unix; West Chester, PA
Lines: 18

In article <3320@auspex.auspex.com> guy@auspex.auspex.com (Guy Harris) writes:
>In article <11410@cbmvax.commodore.com> I wrote:
>>This didn't answer Mr. Rae's question nor was it in the least
>>constructive since on System V [*1] a shell script can not be setuid;
>
>Eh?  When last I saw S5R4 it *did* support set-uid shell scripts, and
>used the "/dev/fd/N" hack to get around at least one of the known
>security holes.

My mistake--a correction: System V Release 4.0 does support set-uid
shell scripts if the !# notion is used.  I've tried this with the
bourne and korn shells.

Pax, Keith
-- 
Support code for SVVS:
{int fd=open("/dev/zero",0);mmap(0,0x800,1,0x11,fd,0);close(fd);}
Keith Gabryelski				ag@amix.commodore.com