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Date:	Wed, 26 Jun 2013 17:30:51 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: Is there SCSI ioctl() support in cygwin? Where is sg.h?
Message-ID:	<20130626153051.GE6966@calimero.vinschen.de>
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References:	<51CADF24 DOT 4090200 AT bracketfire DOT com>
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User-Agent:	Mutt/1.5.21 (2010-09-15)

On Jun 26 08:31, Peter Allen wrote:
> I've searched the archives and the net and haven't found any
> information about using ioctl() to send commands to a SCSI disk.
> 
> I'm porting an application that needs structures defined in sg.h,
> (sg_io_hdr_t) but can't find that header in any cygwin package.
> 
> Is there support for this in cygwin?

No, sorry, there isn't.  While Windows offers SCSI passthrough
capability using some DeviceIoControl control code, we don't support the
/dev/sg* devices and the translation from sg to underlying Windows
device.

I played with the SCSI passthrough stuff a couple years ago.  I'd say,
the real problem is not to support passthrough, but the device
translation.  There's pretty certainly a way to offer that, but off the
top of my head I don't know how to.

Adding a Cygwin fhandler for sg devices and SCSI passthrough would
probably be a nice side project for somebody who's interested in this
stuff.  It wouldn't really collide with anything which is already
implemented.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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