enabling vfs plugins with libc

[Stefan Thöni]

Hello Genodians

I'm working on enabling vfs plugins that use libc, specifically a ported 
library. The library accesses a hardware device through a file in vfs, 
so there is no using a minimal libc implementation as it's the libc's 
vfs access that creates the chicken and egg problem preventing vfs 
plugins with libc.

The best solution I could think of this far is a special vfs server 
component that uses two vfs, one the hosts the libc using plugins and 
another that provides the vfs libc needs.

I've created a small code sample to demonstrate:
https://github.com/throwException/genode/tree/libc_vfs

What do you think about this problem/solution?

-- 
Freundliche Grüsse

Stefan Thöni
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