Re: [ANN] Lunatik -- NetBSD kernel scripting with Lua (GSoC project

[jean-Yves Migeon <jym%NetBSD.org@localhost>]

On Tue, 5 Oct 2010 18:24:48 -0300, Lourival Vieira Neto
<lourival.neto%gmail.com@localhost> wrote:
> I'm glad to announce the results of my GSoC project this year [1].
> We've created the support for scripting the NetBSD kernel with Lua,
> which we called Lunatik and it is composed by a port of the Lua
> interpreter to the kernel, a kernel programming interface for
> extending subsystems and a user-space interface for loading user
> scripts into the kernel. You can see more details on [2]. I am
> currently working on the improvement of its implementation, on the
> documentation and on the integration between Lunatik and other
> subsystems, such as npf(9), to provide a real usage scenario.
> 
> I'd like to take this space also to publicly thank Marc Balmer, for
> his kind support; prof. Roberto Ierusalimschy, for his comprehension
> and support; and NetBSD developers for their prompt help.
> 
> [1]
>
http://socghop.appspot.com/gsoc/student_project/show/google/gsoc2010/netbsd/t127230760748
> [2] http://netbsd-soc.sourceforge.net/projects/luakern/
> 
> Cheers,

Heh, impressive :) Who would have imagined that NetBSD could end up with a
"scripting" language inside kernel :o

Is there any sort of "limitation" between the "in-kernel" and a "userland"
lua, when you adapted it to kernel's limited API?

Taking your example with Fibonacci, this uses recursion. And recursion is
bad(c) in a kernel. Does it affect lua? (this can get problematic when
writing complex parsers, for example).

This is definitely interesting anyway; thanks for your work!

Cheers,

-- 
Jean-Yves Migeon
jym%NetBSD.org@localhost