From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rusty Russell Subject: Re: /proc/xen/xenbus supports watch? Date: Fri, 09 Sep 2005 10:43:29 +1000 Message-ID: <1126226609.25110.3.camel@localhost.localdomain> References: <5d7aca9505090801025f3d5771@mail.gmail.com> <3d8eece205090803381b818f18@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <3d8eece205090803381b818f18@mail.gmail.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Christian.Limpach@cl.cam.ac.uk Cc: NAHieu , xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On Thu, 2005-09-08 at 11:38 +0100, Christian Limpach wrote: > On 9/8/05, NAHieu wrote: > > Anybody (Christian?) could please tell me if we can get the support > > for registering watch with /proc/xen/xenbus? (..OK, I know that we > > will change it this /proc stuff to a device soon) > > > > So far we can only do read/write/rm. I really miss the xen watch feature. At the moment, the xenbus device is a simple hack which grabs the lock on all store communication on open, and drops it on close. It's not really a general mechanism for tools in domUs to communicate with the store. BTW, Christian, you'll be happy to know I'm testing a patch which changes the unnatural ioctl into a read/write interface 8) Cheers, Rusty. -- A bad analogy is like a leaky screwdriver -- Richard Braakman