X-Recipient: archive-cygwin@delorie.com X-Spam-Check-By: sourceware.org Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Subject: ioctl in cygwin Date: Tue, 19 Aug 2008 09:27:59 -0500 Message-ID: In-Reply-To: <1KVLws-1iowvw0@fwd25.aul.t-online.de> References: <1KV3KS-06K7k00@fwd26.aul.t-online.de> <20080819030025.GA4204@ednor.casa.cgf.cx> <20080819032227.GC4204@ednor.casa.cgf.cx> <1KVLws-1iowvw0@fwd25.aul.t-online.de> From: "Chen, Lihong" To: X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id m7JESjR8008812 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. Lihong -- 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/