From owner-cvs-all@FreeBSD.ORG  Tue Mar 21 06:35:50 2006
Return-Path: <owner-cvs-all@FreeBSD.ORG>
X-Original-To: cvs-all@FreeBSD.org
Delivered-To: cvs-all@FreeBSD.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 5E9FC16A429;
	Tue, 21 Mar 2006 06:35:50 +0000 (UTC)
	(envelope-from ariff@FreeBSD.org)
Received: from repoman.freebsd.org (repoman.freebsd.org [216.136.204.115])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 798AE43D55;
	Tue, 21 Mar 2006 06:35:48 +0000 (GMT)
	(envelope-from ariff@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 k2L6Zmlm010845;
	Tue, 21 Mar 2006 06:35:48 GMT
	(envelope-from ariff@repoman.freebsd.org)
Received: (from ariff@localhost)
	by repoman.freebsd.org (8.13.1/8.13.1/Submit) id k2L6ZmlL010844;
	Tue, 21 Mar 2006 06:35:48 GMT (envelope-from ariff)
Message-Id: <200603210635.k2L6ZmlL010844@repoman.freebsd.org>
From: Ariff Abdullah <ariff@FreeBSD.org>
Date: Tue, 21 Mar 2006 06:35:48 +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/dev/sound/pcm dsp.c mixer.c sound.c sound.h
X-BeenThere: cvs-all@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: CVS commit messages for the entire tree <cvs-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-all>
List-Post: <mailto:cvs-all@freebsd.org>
List-Help: <mailto:cvs-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 21 Mar 2006 06:35:50 -0000

ariff       2006-03-21 06:35:48 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/sound/pcm    dsp.c mixer.c sound.c sound.h 
  Log:
  Apply more thorough fixes while dealing with device opening and closing:
  
  - Determine open direction using 'flags', not 'mode'. This bug exist since
    past 4 years.
  - Don't allow opening the same device twice, be it in a same or different
    direction.
  - O_RDWR is allowed, provided that it is done by a single open (for example
    by mixer(8)) and the underlying hardware support true full-duplex operation.
  - Do various paranoid checking in case other process/thread trying to hijack
    the same device twice (or more).
  
  MFC after:      5 days
  
  Revision  Changes    Path
  1.94      +73 -91    src/sys/dev/sound/pcm/dsp.c
  1.49      +13 -1     src/sys/dev/sound/pcm/mixer.c
  1.101     +188 -92   src/sys/dev/sound/pcm/sound.c
  1.68      +1 -1      src/sys/dev/sound/pcm/sound.h