Re: rm-ing files with open file descriptors
Horst von Brand (brand@jupiter.cs.uni-dortmund.de)
Sun, 20 Jan 2002 16:48:06 +0100
Miquel van Smoorenburg <miquels@cistron.nl> said:
> According to Horst von Brand:
> > > I now have a flink-test2.txt file. That is pretty cool ;)
> >
> > This is a possible security risk: The unlinking program thinks the file is
> > forever inaccessible, but it isn't...
>
> Why. If you keep an fd open to it it's accessible anyway, and if
> you like you can copy it to a new file. Or you could link(2) it
> beforehand, etc etc
Right. So the "staying around in /proc" is a risk.
--
Horst von Brand http://counter.li.org # 22616
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