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From: "Reinhold Huber" <rhuber@fs.tum.de>
Date: Tue, 2 Aug 2005 16:32:00 +0200
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Subject: CAM SCSI, finding out bus ID, target and LUN
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Hello,

I'm trying to get bus ID, target and LUN to an open fd which is afaik
opened to the device special file, e.g. /dev/cd0 .

So how do I get the information? Up to now, I didn't find IOCTL calls
(like in NetBSD) which deliver this kind of info, and first tries to
browse in CAM examples didn't help either.

I tried on FreeBSD 5.3 and currently hope that there are no big
changes to this between 5.3 and 5.4 or even -current. If I'm
wrong with this, please correct me.

Any pointer to docs or source is welcome.

Best regards,
Reinhold Huber