[haiku-development] BFS drivers for other systems?

Recently there was a post on the Minix 3 google group about porting
the BFS filesystem to Minix. The issue came up: are there already BFS
drivers for Linux or Windows that might serve as a model to those who
intend to do the porting to Minix?

I seem to remember that the Linux driver (e.g. on Zeven OS) is
read-only. Is there also a fully functional (read-and-write, etc.)
driver somewhere, for whatever system?

Does anyone have some precise information about it?

Also, apart from Dominic Giampaolo's pdf ebook, is there any other
source of technical documentation available?

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