Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm 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 X-Authentication-Warning: eos.vss.fsi.com: ford owned process doing -bs Date: Fri, 17 Oct 2003 16:57:50 -0500 (CDT) From: Brian Ford X-X-Sender: ford@eos To: Andy Howell cc: cygwin@cygwin.com Subject: Re: error setting pipe to non-blocking IO In-Reply-To: <3F906430.5000100@austin.rr.com> Message-ID: References: <3F906430.5000100@austin.rr.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII On Fri, 17 Oct 2003, Andy Howell wrote: > I am trying to setup a pipe to do non-blocking IO: > > int main() > { > int pipefd[2]; > int n; > n = 1; > > pipe(pipefd); > perror("Pipe: "); > ioctl(pipefd[0], FIOBIO, &n); > perror("Ioctl: "); > } > > When I run this, I get: > > Pipe: No Error > Ioctl: Invalid argument > > Any ideas? > Yup, unsupported. from src/winsup/cygwin/fhandler.cc:909 int fhandler_base::ioctl (unsigned int cmd, void *buf) { if (cmd == FIONBIO) syscall_printf ("ioctl (FIONBIO, %p)", buf); else syscall_printf ("ioctl (%x, %p)", cmd, buf); set_errno (EINVAL); return -1; } -- Brian Ford Senior Realtime Software Engineer VITAL - Visual Simulation Systems FlightSafety International Phone: 314-551-8460 Fax: 314-551-8444 -- 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/