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)
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at