Re: [RFC/PATCH] RLIMIT_ARG_MAX

Ollie Wild
2008-02-29T19:02:04Z

On Fri, Feb 29, 2008 at 10:12 AM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> So it's not *going* to be exact even with RLIMIT_ARG_MAX, because it's
> going to have all those other issues to contend with - on a 64-bit
> architecture, the argument _pointers_ are often within an order of
> magnitude of the argument strings themselves, and I don't think your patch
> counted them as part of the argument/environemnt size (I was too lazy to
> check the sources, but I'm pretty sure argv/env_start/end is just the
> string space, not the pointers).

This is precisely why I picked 25% as the maximum argument size ratio.
In practice, that 25% can easily mean 50% or more. If people want to
increase this, it can probably be tweaked somewhat, but switching it
to, say, 50% probably isn't a good idea.

Ollie