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Date:      Mon, 17 Dec 2007 21:39:39 +1030
From:      "Daniel O'Connor" <doconnor@gsoft.com.au>
To:        Alexander Leidinger <Alexander@leidinger.net>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: Linux version of libusb that works with FreeBSD
Message-ID:  <200712172139.54481.doconnor@gsoft.com.au>
In-Reply-To: <20071217100608.sti502z4skk4g4g8@webmail.leidinger.net>
References:  <200712171626.59808.doconnor@gsoft.com.au> <20071217100608.sti502z4skk4g4g8@webmail.leidinger.net>

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On Mon, 17 Dec 2007, Alexander Leidinger wrote:
> > The thing I am not sure about is how ioctl's would get mangled on
> > the way through.
>
> They get interpreted as linux ioctl, as they are handled by the
> linuxulator. You could try to write a wrapper there...

Yeah..
Maybe an FS approach would be simpler since there is already a=20
framework.

> > I guess the other approach would be to use a standard Linux libusb
> > but emulate the device tree it uses in Linux.. Would be a lot of
> > work though I think.
>
> As long as you can specify the devices in the linux app, it's enough
> to translate the ioctl's. Apart from that, there's some kind of
> translation layer for devices already, but I don't know if it just a
> Linux major/minor -> FreeBSD dev mapping, or if you can map linux dev
> -> FreeBSD dev.

Not sure I can specify the devices, but there's always ln :)

> AFAIR HPS' USB stack has linux compatibility, maybe you should ask
> him / have a look at it.

I had a look at the code but I can't see any Linux related code.

=2D-=20
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C

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