On Sat, 9 Jun 2007, Matt Mackall wrote:
> On Sat, Jun 09, 2007 at 01:31:56PM -0700, Davide Libenzi wrote:
> > On Sat, 9 Jun 2007, Linus Torvalds wrote:
> >
> > > So I think both the FD_CLOEXEC _and_ the "private fd space" are real
> > > issues. I don't agree with the "random fd" approach. I'd much rather have
> > > a non-random setup for the nonlinear ones (it just shouldn't be linear).
> >
> > That is fine for me. So what about the randomness?
> >
> > A) Don't do it at all
> >
> > B) Let userspace select it in some way globally
> >
> > C) Let userspace select it per-fd (this won't be an O(1) anymore though)
>
> It should be handled the same way that VMA layout randomness is
> handled. There are multiple knobs including ELF markers and /proc
> bits.
You mean a global bit controlled by /proc, eventually overridden by an ELF
flag? An maybe a prctl() to give sw configurability?
- Davide
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