Re: [uml-devel] Access to kernel modules from within UML

[Matt Z. <md...@de...>]

On Mon, Jan 14, 2002 at 06:06:42PM -0500, Jeff Dike wrote:

> md...@de... said:
> > But this would still have to be updated with each new UML kernel, and
> > also in folks' private images, unless we mount over all of /lib/
> > modules. 
> 
> Yeah, good point.  Another possibility - have a generic line in fstab that
> mounts them someplace like /lib/modules/current and have an rc script make
> a symlink to there from /lib/modules/`uname -whatever`.

That's a promising idea.  We could mount /usr/lib/uml on the host as
/usr/lib/uml inside UML, and just set up a symlink from,
/lib/modules/<version> to, say, /usr/lib/uml/modules/<version>.  Having
/usr/lib/uml available as a standard would provide a place for other things
that one might want to share with the UML systems, also.

It might be nice to have a standard UML "overlay" that could be untarred
over an image to make things like this work, containing a few init scripts
and the like.  Maybe even an RPM or deb for installing them on RPMish and
Debianish root images.  I use a simple one for Debian potato which creates
the UBD block devices and an appropriate fstab for booting as ubd0 under
UML.

-- 
 - mdz