From mboxrd@z Thu Jan  1 00:00:00 1970
From: NAHieu <nahieu@gmail.com>
Subject: problem using xenbus interface
Date: Mon, 8 Aug 2005 21:26:02 +0900
Message-ID: <5d7aca9505080805267dce691b@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Return-path: <xen-devel-bounces@lists.xensource.com>
Content-Disposition: inline
List-Unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: xen-devel@lists.xensource.com
List-Id: xen-devel@lists.xenproject.org

Hello,

I a writing a small kernel module for domU, in which I use xenbus and
have some problems:

I use xenbus_scanf to read value of "/restart_mode", but the below
code always failed (got non-zero err)

err =3D xenbus_scanf("/", "restart_mode", "%s", mode);


Another code like below also failed (I try to make a new node
"/domain/<DOM>/test" with xenbus_mkdir):

err =3D xenbus_mkdir("/", "test");


I am using the latest xen pulled from -unstable repository. I guess
the problem is I didnt use xenbus interface properly (?) Anybody could
give me some helps?

Thank you a lot,
NAH