pam_tmpdir, etc

Colin Watson cjwatson at
Fri Oct 29 06:50:39 CDT 2004

On Fri, Oct 29, 2004 at 10:15:11AM +0200, Tollef Fog Heen wrote:
> * Martin Pool 
> | > One of the shortcomings of pam_tmpdir is that it won't have any effect on
> | > programs which don't honor TMPDIR.  Yes, those programs are arguably buggy,
> | > but programs with temporary file vulnerabilities were already buggy. :-)
> | 
> | Yes, that's true.  It may be a smaller number of programs though, and
> | to some extent this is a numbers game.
> grepping for /tmp in .h and .c files is a start, of course, you have
> to go through this by hand (since a lot will fall back to using /tmp
> if getenv(«TMPDIR») doesn't return anything useful (but then, then
> should be using mkstemp or tmpfile)).

tmpfile(), of course, does not honour $TMPDIR at all ...

Colin Watson                                    [cjwatson at]

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