Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!olivea!orc!inews!iwarp.intel.com!gargoyle!chinet!les
From: les@chinet.chi.il.us (Leslie Mikesell)
Newsgroups: comp.lang.perl
Subject: Re: While learning PERL... a suggestion
Keywords: perl file learn suggest
Message-ID: <1991Jan23.172830.684@chinet.chi.il.us>
Date: 23 Jan 91 17:28:30 GMT
References: <119440@uunet.UU.NET> <1991Jan22.054732.14797@convex.com> <119542@uunet.UU.NET>
Organization: Chinet - Public Access UNIX
Lines: 19

In article <119542@uunet.UU.NET> rbj@uunet.UU.NET (Root Boy Jim) writes:

>What I am trying to do is steal one of UUCP's dialout modems,
>following the same protocol that tip/cu use.

>>Anyway aren't you "supposed" to use link, not creat, for creating
>>lock files of this nature?

>Not, I believe, since the "new" flags were added to open.

Actually you still need to make the file under a temp name and link it
because the contents of the lockfile are used by cu/uucp, and there
is no other way to make the contents of the file consistent at the
time the name appears.  It is still impossible to use the contents
for anything that relies on the contents remaining the same after
looking at it, but that's not perl's problem.

Les Mikesell
  les@chinet.chi.il.us