X-Recipient:	archive-cygwin AT delorie DOT com
X-Spam-Check-By:	sourceware.org
Date:	Tue, 19 Aug 2008 11:13:56 -0400
From:	Christopher Faylor <cgf-use-the-mailinglist-please AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: ioctl in cygwin
Message-ID:	<20080819151356.GF1738@ednor.casa.cgf.cx>
Reply-To:	cygwin AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
References:	<1KV3KS-06K7k00 AT fwd26 DOT aul DOT t-online DOT de> <20080819030025 DOT GA4204 AT ednor DOT casa DOT cgf DOT cx> <20080819032227 DOT GC4204 AT ednor DOT casa DOT cgf DOT cx> <1KVLws-1iowvw0 AT fwd25 DOT aul DOT t-online DOT de> <E05F1FD208D5AA45B78B3983479ECF08023EC2FC AT saturn DOT p3corpnet DOT pivot3 DOT com>
MIME-Version:	1.0
In-Reply-To:	<E05F1FD208D5AA45B78B3983479ECF08023EC2FC@saturn.p3corpnet.pivot3.com>
User-Agent:	Mutt/1.5.16 (2007-06-09)
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Unsubscribe:	<mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com

On Tue, Aug 19, 2008 at 09:27:59AM -0500, Chen, Lihong wrote:
>Hi,
>I need to be able to open a device using the POSIX reference in Cygwin
>and issue IOCTL calls to it.  SCSI commands specifically.
>
>The following is some code:
>
>struct sg_io_hdr  io_hdr;
>
>   int fd = open("/dev/sdc", O_RDWR); 
>  
>  ret = ioctl(fd, SG_IO, &io_hdr);
>
>
>I put in my own sg_io_hdr in the file which I copied from the sg.h.
>
>I had return code = -1 which is error.
>
>Could someone please give me some ideas about how to do this right.
>Thanks.

1) Please don't piggyback on an ongoing email thread.

2) If the ioctl value that you need isn't already in the system headers
that means that it isn't implemented.  Copying the value from some
other system is not going to work.

cgf

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

- Raw text -