Re: [patch 7/8] fdmap v2 - implement sys_socket2

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.

--
Mathematics is the supreme nostalgia of our time.
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