linux-kernel - Re: [PATCH 2 of 5] xn/blkfront: Add the CDROM_GET

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Message-ID: <4840B077.70705@pobox.com>
Date:	Fri, 30 May 2008 21:57:11 -0400
From:	Jeff Garzik <jgarzik@...ox.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	Jens Axboe <jens.axboe@...cle.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2 of 5] xn/blkfront: Add the CDROM_GET_CAPABILITY ioctl
 to	blkfront

Jeremy Fitzhardinge wrote:
> +	case CDROM_GET_CAPABILITY: {
> +		struct gendisk *gd = info->gd;
> +		if (gd->flags & GENHD_FL_CD)
> +			return 0;
> +		return -EINVAL;
> +	}


Surely you can come up with a better implementation than this?  It's 
just a bitmask returned to userspace...

	Jeff


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