|Uh, how could EXT2 be "open source"? It's a fileystem format, not a|
piece of software. Well.. a filesystem format could be declared under
the GPL, I suppose, as it's not only valid for code. However, this
would then be with respect to modifications etc of the filesystem spec
itself, not of sourcecode capable of understanding the (original
specification of the) format.
Now, I don't really have much of a clue when it comes to filesystems,
but I doubt it's something you "port" easily from a *ix GPL source. To
the best of my knowledge, it's quite different on Amiga-like systems.