Date: Fri, 19 Dec 2003 12:02:14 -0800 From: John-Mark Gurney <gurney_j@efn.org> To: Joe Marcus Clarke <marcus@freebsd.org> Cc: hackers@freebsd.org Subject: Re: Programmatically test for a DVD drive Message-ID: <20031219200214.GC559@funkthat.com> In-Reply-To: <1071624821.78714.9.camel@shumai.marcuscom.com> References: <1071624821.78714.9.camel@shumai.marcuscom.com>
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Joe Marcus Clarke wrote this message on Tue, Dec 16, 2003 at 20:33 -0500:
> I'm trying to figure out the best way to programmatically test to see if
> a disc device is a DVD device. That is, how can I tell the difference
> between a CD-[ROM|R|RW] and a DVD-[ROM|R|RW]? Is there a set method for
> doing this, or should I just try to execute a DVD ioctl, and test to see
> if it succeeds? Thanks.
Take a look at cdrecord and see what that does... But that might
require you to use atapi-cam instead of the "normal" atapi-cd device.
You could also read the specs for atapi, and implement the ioctl for
the atapi-cd drivers to do the query.
--
John-Mark Gurney Voice: +1 415 225 5579
"All that I will do, has been done, All that I have, has not."
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