lkml.org 
[lkml]   [2007]   [Jun]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch 7/8] fdmap v2 - implement sys_socket2
On Fri, 8 Jun 2007, Alan Cox wrote:

> On Fri, 08 Jun 2007 11:43:29 -0700
> Ulrich Drepper <drepper@redhat.com> wrote:
>
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> >
> > Alan Cox wrote:
> > > Why does he want an unpredictable algorithm
> >
> > To avoid exactly the kind of problem we have now in future: programs
> > relying on specific patterns.
>
> Which you seem to think is a bad thing, yet is actually a very good thing
> because it means that crashes are repeatable and problems are debuggable
> from end user reports.
>
> Trying to randomize filehandles for the general case is not a productive
> activity. If you want to debug cases write yourself a glibc wrapper that
> does annoying things but don't inflict it on people who actually want to
> build working, testable, debuggable systems (ie most of us)

So, what do you plan to do? Those handle won't be zero-based. Your
"working" system I immagine will do:

bleeh[handle - BASE].duh = ...;

How nice for a working system. If you *store* the handle returned by the
OS, and you *use* the handle to call for OS services, you will be fine
independently from the value handed out by the OS.



- Davide


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-06-08 21:41    [from the cache]
©2003-2011 Jasper Spaans