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 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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.16 (2007-06-09) Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , 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/