problems with packet command

problems with packet command

[Kantor Zsolt]

Hi, I'm developing an application that uses cd-rom IOCTL's. All is fine but I have one problem I
can not set up a packet command, because I don't know exactly how to fill out the 12 byte command
field.  I searched the internet, looked in the cdrom.c driver, some other programs source code,
but I don't have a clear picture about that. I just know that the first element cmd[0] is the
command.
Would somebody please explain me how to fill out the 12 bytes ? or if not then at least could
point out a good online resource. You are my last hope

Thanks 
  Kantor      


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Re: problems with packet command

[Tejun Heo]

Kantor Zsolt wrote:
> Hi, I'm developing an application that uses cd-rom IOCTL's. All is
> fine but I have one problem I can not set up a packet command,
> because I don't know exactly how to fill out the 12 byte command 
> field.  I searched the internet, looked in the cdrom.c driver, some
> other programs source code, but I don't have a clear picture about
> that. I just know that the first element cmd[0] is the command.
>
> Would somebody please explain me how to fill out the 12 bytes ? or if
> not then at least could point out a good online resource. You are my
> last hope

That field contains SCSI CDBs which are described in SCSI standards.
You can download standard drafts from t10.org freely and drafts are as
good as the real ones.  You'll need to look at SPC and MMC standards.

-- 
tejun