Jivin David Howells lays it down ...
> Darwin Chen <[EMAIL PROTECTED]> wrote:
>
> > I found a surprised code after I hacking the kernel with several weeks:
> > In linux-2.6.x/fs/binfmt_flat.c: Line 603:
> > textpos = do_mremap(textpos, len, reallen,
> > MREMAP_FIXED, textpos);
> >
> > But, in linux-2.6.x/mm/nommu.c, the code didn't support MREMAP_FIXED flag.
> > So, I always get this error.
> >
> > Is this a kernel bug? Or how to fixed it?
>
> You need an MMU if you want to implement that - at least for anything other
> than new_address == old_address. So just like for MAP_FIXED, MREMAP_FIXED is
> not supported if CONFIG_MMU=n.
Ok, but both the calls to do_mremap have newaddr and addr the same
(ie., textpos above). And from mm/nommu.c:
if (flags & MREMAP_FIXED && new_addr != addr)
return (unsigned long) -EINVAL;
So perhaps it is failing further down the do_mremap conditionals,
Cheers,
Davidm
--
David McCullough, [EMAIL PROTECTED], Ph:+61 734352815
Secure Computing - SnapGear http://www.uCdot.org http://www.cyberguard.com
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