*BSD News Article 94658


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From: Peter Schurek <Peter.Schurek@siemens.at>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Q: Recursive Link; Bug or Feature ?
Date: Tue, 29 Apr 1997 15:25:03 +0200
Organization: PSE TN143; Siemens AG, Austria
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Hi !

Recently I set up the following directory structure:

mkdir /var/spool/ftp/pub # the anonymous ftp public directory

mkdir /usr/home/WWW      # the document root of my httpd server
ln -s /var/spool/ftp/pub /usr/home/WWW/pub

I then tried to copy some files into /var/spool/ftp/pub to test the ftp
access of the lynx browser:

cp -r /usr/home/WWW/* /var/spool/ftp/pub

After a few seconds I became alerted by a steady lit HD LED and started
to act rationally and cancelled the cp command.

Obviously, recursively copying a directoy to itself lacks a termination
condition (other than just running out of space) and is therefore a bad
thing.

Of course, I consider this my fault, but I am still interested on
whether I did just something qualifying me as DAAZ (Duemmster
Administrator aller Zeiten) or stumbled across some murky RTFM area
concerning soft links, or just an unresolved problem area of the UNIX
(or just BSD ?) file system implementation ?

Regards, Peter