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SubjectRe: Require mmap handler for a.out executables


On Thu, 27 Jul 2006, Christoph Hellwig wrote:
>
> > diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c
> > index f312103..5638acf 100644
> > --- a/fs/binfmt_aout.c
> > +++ b/fs/binfmt_aout.c
> > @@ -278,6 +278,9 @@ static int load_aout_binary(struct linux
> > return -ENOEXEC;
> > }
> >
> > + if (!bprm->file->f_op || !bprm->file->f_op->mmap)
> > + return -ENOEXEC;
> > +
>
> These checks need a big comment explanining why they are there, else people
> will remove them again by accident.

Since we fixed the /proc problem in a different way, I decided that it
might be best to leave the a.out stuff alone, at least for now. It is
conceivable that somebody actually might be using executables on some
strange filesystem that doesn't support mmap, although I can't for the
moment think of any good reason.

Linus
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