Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754868Ab2FWESe (ORCPT ); Sat, 23 Jun 2012 00:18:34 -0400 Received: from mail-wi0-f178.google.com ([209.85.212.178]:47493 "EHLO mail-wi0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750887Ab2FWESa convert rfc822-to-8bit (ORCPT ); Sat, 23 Jun 2012 00:18:30 -0400 MIME-Version: 1.0 In-Reply-To: <20120623040633.GA16278@kroah.com> References: <20120623040633.GA16278@kroah.com> Date: Sat, 23 Jun 2012 12:18:29 +0800 Message-ID: Subject: Re: [PATCH] Implement uhook(call kernel func from userspace) driver From: Peiyong Feng To: Greg KH Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1466 Lines: 37 2012/6/23 Greg KH : > On Sat, Jun 23, 2012 at 11:20:35AM +0800, Peiyong Feng wrote: >> Hi all, >> >> This patch implement the uhook kernel driver. Here are some ideals and >> explanations: >> >> 1. What is uhook >> >> uhook(userspace kernel hook) means call kernel function from >> userspace. That is to say, we can >> >> write a function in kernel space and call it in userspace while the >> kernel Image is running. For example: > > That's, um, "interesting", but is of course, nothing we can accept into > the main kernel tree, as I'm sure you can understand. ?Otherwise, you > just created a few thousand undocumented system calls whose behavior > changes every release which is not something we can accept. > > But it is a great hack, very nicely done. ?I'm sure that some people > will like it for debugging, although I'm not quite sure you got all of Well, is there some other tree I can commit the patch? > the user/kernel boundry conditions correct, and I know the 32/64bit > issues aren't handled, which you might want to clean up sometime in the I am still working on it. The ultimate aim is that the uhook module can process any funciton and any data type > future. > > greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/