From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 101347 invoked by alias); 18 May 2015 15:33:47 -0000 Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Received: (qmail 101335 invoked by uid 89); 18 May 2015 15:33:47 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=1.1 required=5.0 tests=AWL,BAYES_50,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 X-HELO: mail-ig0-f180.google.com Received: from mail-ig0-f180.google.com (HELO mail-ig0-f180.google.com) (209.85.213.180) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-GCM-SHA256 encrypted) ESMTPS; Mon, 18 May 2015 15:33:45 +0000 Received: by igbsb11 with SMTP id sb11so50976654igb.0 for ; Mon, 18 May 2015 08:33:43 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.50.43.194 with SMTP id y2mr15096232igl.35.1431963223732; Mon, 18 May 2015 08:33:43 -0700 (PDT) Received: by 10.36.32.139 with HTTP; Mon, 18 May 2015 08:33:43 -0700 (PDT) In-Reply-To: <5559FB9E.3040200@cygwin.com> References: <5559FB9E.3040200@cygwin.com> Date: Mon, 18 May 2015 16:19:00 -0000 Message-ID: Subject: Re: File operations on a Windows Driver (character device) From: Alessio Faina To: cygwin@cygwin.com Content-Type: text/plain; charset=UTF-8 X-IsSubscribed: yes X-SW-Source: 2015-05/txt/msg00218.txt.bz2 Ok thanks, I've been able to find the character device under "/proc/sys/DosDevices/Global/deviceName"; now I'm stuck with the mmap implementation; when I do mmap in the userland program it returns me errno 19 (#define ENODEV 19 /* No such device */) obviously because I haven't set anything in the kernel module; there's a way to make visible a portion of memory to be used by the mmap in the kernel? The memory is Non Paged and allocated with a ExAllocatePoolWithTag in 'win terms'. 2015-05-18 16:47 GMT+02:00 Larry Hall (Cygwin) : > On 05/18/2015 05:42 AM, Alessio Faina wrote: >> >> Hello everyone, >> >> I'm developing a port of a FreeBSD/Linux application that consists of >> two parts: a kernel and a user land part. >> The kernel part is build as a WDM driver and is compiled with VS2013 >> and WDK 8.1: the userspace is going to >> be compiled under Cygwin for compatibility with user land programs >> already written for other OSs. >> >> My problem is that the user space program invokes Open(), ioctl(), >> mmap/munmap(), select() and poll(). >> >> I've build a test Win32 app to open with CreateFile the DosDevice with >> the "\\\\.\\uniioctl" name and everything goes fine, >> but I've tried to do the same thing with Open(...) with a lot of >> variants (\\DosDevice\\uniioctl, \dev\uniioctl....) but I'm >> unable to open the character device. There is some way to do this? > > > Sorry I can't help with allot of specifics on your questions but I can > say that when using Cygwin, you are best off if you stick to POSIX syntax > and semantics and don't mix in Windows code and Windowisms. That includes > path separators (i.e. use '/', not '\'). See this page in the User's Guide > for information on how Cygwin handles device emulation too: > > > > > > -- > Larry > > _____________________________________________________________________ > > A: Yes. >> Q: Are you sure? >>> A: Because it reverses the logical flow of conversation. >>>> Q: Why is top posting annoying in email? > > -- > Problem reports: http://cygwin.com/problems.html > FAQ: http://cygwin.com/faq/ > Documentation: http://cygwin.com/docs.html > Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple > -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple