Date: Wed, 12 Nov 2003 12:36:04 +0100
From: Jens Axboe <axboe@suse.de>
To: Andreas Jellinghaus <aj@dungeon.inka.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: ide cdrom sg like access / rpcmgr ?
Message-ID: <20031112113604.GG21141@suse.de>
References: <1068494681.808.11.camel@simulacron>
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On Mon, Nov 10 2003, Andreas Jellinghaus wrote:
> Hi,
> 
> Is there some documentation on how to access an ide cdrom in 2.6.0*
> for converting an app that used ide-scsi and sg devices?
> (I'd like to use rpcmgr11.c to unlock my dvd drive. maybe someone
>  already ported it to kernel 2.6.*?)
> 
> the original source uses:
>   fd = open(..., O_RDWR);
> write, read and   ioctl(fd, SG_NEXT_CMD_LEN, &cmdlen);
> (but the ioctl only on lg drives, mine is a hitachi,
> so that shouldn't be necessary).
> 
> or will I need ide-scsi to do these things?

Post the code and I'll show you how to do it. Generally, you should just
use SG_IO or CDROM_SEND_PACKET for this.

-- 
Jens Axboe

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