Re: [uml-devel] About COW & filesystems

[Steve Schnepp <snide@free.fr>]

On Wed, Oct 29, 2003 at 06:16:18AM -0800, James McMechan wrote:
> [Plenty interesting stuff about the future of COW]

I did a kernel module to support user space loop devices. [ actually 
any userspace block device ]

The idea is that you open a /dev/ulb[a-z] and the kernel module connects
it to /dev/ulc[0-26] (major/minor are assigned automatically by the
kernel)

Then a user-space helper reads /dev/ulc0 for commands & data, and
reads/writes somewhere (usually in a file), and then writes back the
result to /dev/ulc0. For now it's heavily 2.4.x oriented...

The code isn't in a really good shape (lots of hardcoded values)
But, since i don't have much spare time i decided to publish it here in
case of someone wants to have a look at it. The code should be almost
self-explaining.

I should be able to resume working on it soon, but anyway... your
feedback is very welcome. ( i'm not a good C hacker, and i *do* like to
improve myself )

URL: http://snide.free.fr/uldd/

	Steve

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