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From: bin@primate.wisc.edu (Brain in Neutral)
Newsgroups: comp.sys.mips
Subject: uid/euid question
Message-ID: <847@uakari.primate.wisc.edu>
Date: 7 Oct 89 16:09:10 GMT
Organization: UW-Madison Primate Center
Lines: 29

mkdir uses the real uid/gid.  chmod and touch use the effective uid/gid.
I did the following with what seem to me to be strange results.
(M/120, RISC/os 4.01)

(real uid/gid are rcolony/rem401, effective uid/eig are colony/401)

tmpdir=/tmp/td$$
mkdir $tmpdir

($tmpdir is created with owner/group rcolony/rem401)

chown 777 $tmpdir

(this fails - "no permission match")

files="$tmpdir/x $tmpdir/y"
touch $files

(they're created - with owner/group colony/401!)

chmod 777 $files

(this succeeds!)


Is this supposed to happen?   Or do I just not understand real/effective?

Paul DuBois
dubois@primate.wisc.edu