delorie.com/archives/browse.cgi   search  
Mail Archives: cygwin/2002/10/09/19:50:55

Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sources.redhat.com/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sources.redhat.com/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
To: cygwin AT cygwin DOT com
X-Injected-Via-Gmane: http://gmane.org/
Path: not-for-mail
From: "Chris" <mtp500 AT excite DOT com>
Subject: Cannot use named pipes
Date: Thu, 10 Oct 2002 01:29:31 +0200
Lines: 28
Message-ID: <ao2e4s$72u$1@main.gmane.org>
Reply-To: "Chris" <mtp500 AT excite DOT com>
NNTP-Posting-Host: port173.ds1-noe.adsl.cybercity.dk
X-Trace: main.gmane.org 1034206172 7262 212.242.126.50 (9 Oct 2002 23:29:32 GMT)
X-Complaints-To: usenet AT main DOT gmane DOT org
NNTP-Posting-Date: Wed, 9 Oct 2002 23:29:32 +0000 (UTC)
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 5.50.4807.1700
X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4807.1700

Hi there,
I have recently installed Cygwin (version 1.3.12-2) on Windows 2k (SP2) and
have been trying to evaluate by developing some small programs. One of these
uses named pipes. However none of the named pipes functions seem to work -
all return -1.

Example:

 retcode = unlink ("aPipe");
 retcode = mknod ("aPipe", S_IFIFO, 0);
 retcode = chmod ("aPipe", 0660);
 fd = open ("aPipe", O_RDONLY);

return code for all functions is -1.

I have two programs, one is a writer to the named pipe and the other a
reader and even if I try to ignore the error codes the named pipe
communication doesn't work.

Has anyone seen this problem? Have I setup the environmet incorrectly (file
system is FAT32)? Or is this a known bug?

Any information on this problem would be a help.

Regards,
Chris Mulligan.





--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Bug reporting:         http://cygwin.com/bugs.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

- Raw text -


  webmaster     delorie software   privacy  
  Copyright © 2019   by DJ Delorie     Updated Jul 2019