Re: [PATCH] small kernel driver to charge USB Blackberrys

On Tue, 2007-01-30 at 19:24 -0500, Chris Frey wrote:
> On Tue, Jan 30, 2007 at 06:33:43PM -0500, Rick Scott wrote:
> > In the end, I would like to be able to
> > "cat </dev/blackberry/20098fa9/Address Book/Rick Scott/PIN"
> > to retrieve my pin, similarly to set new entries. In other
> > words, treat the various databases like a filesystem that you could
> > browse.
> 
> It is an interesting idea to make the databases available as a filesystem,
> but note that doing so would put us even more on the "too early" side. :-)
> This would mean that parsing and building of individual database record
> formats would also need to be in the kernel.  I hadn't assumed that would be

I was thinking more along the lines of fuse. Either way, a little ahead
of ourselves :)


> the case originally, but if so, only about 4 databases have been reverse
> engineered so far.  This seems a bit much to put in the kernel.

I don't think we care about most of them. Being able to backup all of
them but decode some of them should be okay.

> 
> Alternatively, the driver would stop at the "Address Book" level
> in the above filesystem example.  You could read and write raw
> records, such as:
> 
> 	cat "/sys/.../blackberry/$DEVICEPIN/Address Book/$RECORDID"
> or
> 	cat "/sys/.../blackberry/$DEVICEPIN/Address Book/$RECORDINDEX"
> 
> ... as ID's can have duplicates.
> 
> Then use some userlevel library to do the parsing and building.
> 
> - Chris

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