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Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!think!harvard!seismo!trwatf!rlgvax!peter
From: peter@rlgvax.UUCP (Peter Klosky)
Newsgroups: net.unix-wizards
Subject: Re: Another reason why a few sources should come with binary licenses
Message-ID: <764@rlgvax.UUCP>
Date: Mon, 16-Sep-85 11:16:42 EDT
Article-I.D.: rlgvax.764
Posted: Mon Sep 16 11:16:42 1985
Date-Received: Wed, 18-Sep-85 04:04:42 EDT
References: <1149@brl-tgr.ARPA> <182@graffiti.UUCP>
Organization: CCI Office Systems Group, Reston, VA
Lines: 12

XXX
> For security make your /tmp file 0600 mode.

Security?
This seems dubious.  My idea of secure includes being able to
read back what was written, possibly from another process.  
/tmp is world writeable.  This means that anyone can unlink tmp files. 

In particular, my application wants to pass state data from a child
process to a parent prodcess via a tmp file that the child creates,
and there are windows of vulnerability in this scheme, due to the unlink
trouble.


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