From owner-cvs-src@FreeBSD.ORG  Mon Sep 12 19:59:13 2005
Return-Path: <owner-cvs-src@FreeBSD.ORG>
X-Original-To: cvs-src@FreeBSD.org
Delivered-To: cvs-src@FreeBSD.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 0B32316A41F;
	Mon, 12 Sep 2005 19:59:13 +0000 (GMT)
	(envelope-from rwatson@FreeBSD.org)
Received: from repoman.freebsd.org (repoman.freebsd.org [216.136.204.115])
	by mx1.FreeBSD.org (Postfix) with ESMTP id D1ECF43D46;
	Mon, 12 Sep 2005 19:59:12 +0000 (GMT)
	(envelope-from rwatson@FreeBSD.org)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.13.1/8.13.1) with ESMTP id j8CJxCvb075065;
	Mon, 12 Sep 2005 19:59:12 GMT
	(envelope-from rwatson@repoman.freebsd.org)
Received: (from rwatson@localhost)
	by repoman.freebsd.org (8.13.1/8.13.1/Submit) id j8CJxCJL075064;
	Mon, 12 Sep 2005 19:59:12 GMT (envelope-from rwatson)
Message-Id: <200509121959.j8CJxCJL075064@repoman.freebsd.org>
From: Robert Watson <rwatson@FreeBSD.org>
Date: Mon, 12 Sep 2005 19:59:12 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: HEAD
Cc: 
Subject: cvs commit: src/sys/fs/fifofs fifo_vnops.c
X-BeenThere: cvs-src@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: CVS commit messages for the src tree <cvs-src.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src>,
	<mailto:cvs-src-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-src>
List-Post: <mailto:cvs-src@freebsd.org>
List-Help: <mailto:cvs-src-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src>,
	<mailto:cvs-src-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 12 Sep 2005 19:59:13 -0000

rwatson     2005-09-12 19:59:12 UTC

  FreeBSD src repository

  Modified files:
    sys/fs/fifofs        fifo_vnops.c 
  Log:
  Introduce no-op nosup fifo kqueue filter and detach routine, which are
  used when a read filter is requested on a write-only fifo descriptor, or
  a write filter is requested on a read-only fifo descriptor.  This
  permits the filters to be registered, but never raises the event, which
  causes kqueue behavior for fifos to more closely match similar semantics
  for poll and select, which permit testing for the condition even though
  the condition will never be raised, and is consistent with POSIX's notion
  that a fifo has identical semantics to a one-way IPC channel created
  using pipe() on most operating systems.
  
  The fifo regression test suite can now run to completion on HEAD without
  errors.
  
  MFC after:      3 days
  
  Revision  Changes    Path
  1.121     +33 -1     src/sys/fs/fifofs/fifo_vnops.c