Re: Fix handling of ELF segments with zero filesize

[David Gibson <david@gibson.dropbear.id.au>]

On Thu, Dec 01, 2005 at 06:26:42AM +0100, Willy Tarreau wrote:
> On Thu, Dec 01, 2005 at 11:20:49AM +1100, David Gibson wrote:
> > Andrew, please apply
> > 
> > mmap() returns -EINVAL if given a zero length, and thus elf_map() in
> > binfmt_elf.c does likewise if it attempts to map a (page-aligned) ELF
> > segment with zero filesize.  Such a situation never arises with the
> > default linker scripts, but there's nothing inherently wrong with
> > zero-filesize (but non-zero memsize) ELF segments.  Custom linker
> > scripts can generate them, and the kernel should be able to map them;
> > this patch makes it so.
> 
> David, 2.4 has exactly the same code, do you see anything wrong with
> applying this patch to 2.4 too ?

Nothing that I can think of.

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson
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