Date: Fri, 19 Dec 2003 15:08:47 -0500 From: Joe Marcus Clarke <marcus@FreeBSD.org> To: John-Mark Gurney <gurney_j@efn.org> Cc: hackers@FreeBSD.org Subject: Re: Programmatically test for a DVD drive Message-ID: <1071864527.762.17.camel@gyros> In-Reply-To: <20031219200214.GC559@funkthat.com> References: <1071624821.78714.9.camel@shumai.marcuscom.com> <20031219200214.GC559@funkthat.com>
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--=-TX8JLsVzzbI8OdH6BOu0 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Fri, 2003-12-19 at 15:02, John-Mark Gurney wrote: > 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 i= f > > 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 fo= r > > doing this, or should I just try to execute a DVD ioctl, and test to se= e > > if it succeeds? Thanks. >=20 > 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. Thanks for the pointer. Using atapi-cam is not a problem since the application I'm porting is basically a front-end to cdrecord which requires atapi-cam. However, I didn't know cdrecord detected the difference on its own, or just did what it was told via command line arguments. Joe >=20 > You could also read the specs for atapi, and implement the ioctl for > the atapi-cd drivers to do the query. --=20 Joe Marcus Clarke FreeBSD GNOME Team :: marcus@FreeBSD.org gnome@FreeBSD.org FreeNode / #freebsd-gnome http://www.FreeBSD.org/gnome --=-TX8JLsVzzbI8OdH6BOu0 Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (FreeBSD) iD8DBQA/41rPb2iPiv4Uz4cRAiHNAKCRINVzqPYqe5Mo3wuUKdX7B9tnxwCfRtcB UGPQoApviQ6Fx583WRlKQPI= =uOci -----END PGP SIGNATURE----- --=-TX8JLsVzzbI8OdH6BOu0--
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