From: Florian Weimer <fw@deneb.enyo.de>
Date: Mon, 18 Apr 2005 12:12:40 GMT
Subject: Re: fix mktemp (remove mktemp ;)
Message-ID: <87u0m4cmh3.fsf@deneb.enyo.de>
In-Reply-To: <E1DNMVX-00013d-00@gondolin.me.apana.org.au>

* Herbert Xu:

> Paul Jackson <pj@sgi.com> wrote:
>> 
>> Even mktemp(1) can collide, in theory, since there is no practical way
>> in shell scripts to hold open and locked the file from the instant of it
>> is determined to be a unique name.
>
> mktemp(1) creates the file before exiting.  Other instances of mktemp(1)
> cannot successfully create the same file (they all use O_EXCL).
> Therefore this race does not exist, even in theory :)

/tmp cleaners exist, but the risks are minimal for programs which
aren't SUID/SGID.