Xref: utzoo comp.bugs.4bsd:1713 comp.lang.c:35753
Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!munnari.oz.au!goanna!ok
From: ok@goanna.cs.rmit.oz.au (Richard A. O'Keefe)
Newsgroups: comp.bugs.4bsd,comp.lang.c
Subject: Re: Complexity of reallocating storage (was users command crap)
Message-ID: <4702@goanna.cs.rmit.oz.au>
Date: 4 Feb 91 04:58:36 GMT
References: <21548@yunexus.YorkU.CA> <5883:Feb102:05:4991@kramden.acf.nyu.edu> <14994:Feb207:10:4791@kramden.acf.nyu.edu>
Followup-To: comp.bugs.4bsd
Organization: Comp Sci, RMIT, Melbourne, Australia
Lines: 21

In article <14994:Feb207:10:4791@kramden.acf.nyu.edu>, brnstnd@kramden.acf.nyu.edu (Dan Bernstein) writes:
> >    if (chdir(newsuid) == -1) {
> >      (void) mkdir(newsuid,0700);

> This cannot fail unless some renegade sysadmin changes the mode of the
> session directory while pty is running.

Er, what about the disc running out of I-nodes?  Or going over quota?
Or a file server dropping dead?

> >      (void) chdir(newsuid);
> >     }

> Cannot fail.

Can fail if the preceding mkdir() failed -- see above.

There is *always* another way for things to go wrong.
-- 
The Marxists have merely _interpreted_ Marxism in various ways;
the point, however, is to _change_ it.		-- R. Hochhuth.