Re: [RFC/PATCH] revoke/frevoke system calls V2
From: Pavel Machek
Date: Tue Aug 08 2006 - 09:55:15 EST
> > > To use revoke() I must own the file
> > > If I own the file I can make it a symlink to a pty/tty pair
> > > I can revoke a pty/tty pair
> > How can you symlink opened file?
> I make a symlink before running the app which opens it. Or if the app
> doesn't open it I pass the file handle of a pty/tty pair to it.
Okay, I guess marginal app could do open, then fstat to make sure it
is not pty/tty, then proceed assuming it can't go away. But I see that
chances of _that_ happening are slim.
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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