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

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 

On Fri, 8 Jun 2007, Alan Cox wrote:

> On Fri, 08 Jun 2007 11:43:29 -0700
> Ulrich Drepper <[email protected]> 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 [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/
[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux