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Path: sserve!manuel.anu.edu.au!munnari.oz.au!uunet!auspex-gw!guy
From: guy@Auspex.COM (Guy Harris)
Newsgroups: comp.unix.solaris,comp.unix.bsd
Subject: Re: Solaris 1.1 vs. Solaris 2.0 (BSD vs AT&T)
Message-ID: <15576@auspex-gw.auspex.com>
Date: 20 Nov 92 00:11:19 GMT
References: <1992Nov15.014513.28154@nobeltech.se> <1992Nov15.035135.15514@ra.msstate.edu> <1992Nov19.165146.22006@syma.sussex.ac.uk>
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>Sequent uses a BSD kernel, very thinly disguised. Eg. the following does not
>work in setuid program.
Does it work under Dynix/PTX? I.e., is Dynix/PTX also a BSD kernel,
even though they claim it to be an SV system?
>real = getuid() ;
>eff = geteuid() ;
>setuid(real) ;
>system("..") ;
>setuid(eff) ; /* This fails, whereas in SysV it works */
Note that it also works if you compile it with "/usr/5bin/cc" in
SunOS 4.x (and even works if you compile with "/usr/bin/cc", if you use
"seteuid()" to set the effective UID).