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Re: unicode build: "comparison is always true" warnings


From: Andreas Schwab
Subject: Re: unicode build: "comparison is always true" warnings
Date: Sat, 24 Nov 2007 15:16:38 +0100
User-agent: Gnus/5.110006 (No Gnus v0.6) Emacs/22.1 (gnu/linux)

Matthieu Lemerre <address@hidden> writes:

> Andreas Schwab <address@hidden> writes:
>>
>> In which way it is different from what mkstemp is doing?
>>
>
> When you use mktemp, you have to use two operations:
> 1/Create a file name with mktemp
> 2/Open it

That's the same what mkstemp does.

> An attacker could create a symlink with this name file between these
> two operations, thus the file would be erased.

That does not happen, because the open will fail when the file already
exists.

Andreas.

-- 
Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."




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