Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932206Ab0LPSGG (ORCPT ); Thu, 16 Dec 2010 13:06:06 -0500 Received: from mail-gy0-f174.google.com ([209.85.160.174]:35853 "EHLO mail-gy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932184Ab0LPSGB (ORCPT ); Thu, 16 Dec 2010 13:06:01 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :content-type:content-transfer-encoding; b=qe2Okko/pMsfYtxGLIdzo+xIO9GwadgrUo/oyEYAWnHWyFGyfGZmaSaidCVGsVTFPh Gp4Z26U9Q03bP0gWzdh7xqsi7Wv1TvYoPzP47lq4YtGNARHsms9T95TygCC0S4y+gvJn kW7TRYDbvuTwMo97UX9cpg5Ao7XuNI988a/lk= Message-ID: <4D0A543B.2010702@gmail.com> Date: Thu, 16 Dec 2010 19:02:35 +0100 From: Marco Stornelli User-Agent: Mozilla/5.0 (X11; U; Linux i686; it; rv:1.9.1.16) Gecko/20101125 SUSE/3.0.11 Thunderbird/3.0.11 MIME-Version: 1.0 To: Linux Kernel CC: Linux Embedded , Linux FS Devel , Andrew Morton , Tim Bird Subject: [PATCH 15/16 v5] pramfs: test module Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1871 Lines: 62 From: Marco Stornelli Test module. Signed-off-by: Marco Stornelli --- diff -Nurp linux-2.6.36-orig/fs/pramfs/pramfs_test.c linux-2.6.36/fs/pramfs/pramfs_test.c --- linux-2.6.36-orig/fs/pramfs/pramfs_test.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.36/fs/pramfs/pramfs_test.c 2010-11-27 11:12:55.000000000 +0100 @@ -0,0 +1,47 @@ +/* + * BRIEF DESCRIPTION + * + * Pramfs test module. + * + * Copyright 2009-2010 Marco Stornelli + * Copyright 2003 Sony Corporation + * Copyright 2003 Matsushita Electric Industrial Co., Ltd. + * 2003-2004 (c) MontaVista Software, Inc. , Steve Longerbeam + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ +#include +#include +#include +#include +#include "pram.h" + +int __init test_pramfs_write(void) +{ + struct pram_super_block *psb; + + psb = get_pram_super(); + if (!psb) { + printk(KERN_ERR + "%s: PRAMFS super block not found (not mounted?)\n", + __func__); + return 1; + } + + /* + * Attempt an unprotected clear of checksum information in the + * superblock, this should cause a kernel page protection fault. + */ + printk("%s: writing to kernel VA %p\n", __func__, psb); + psb->s_sum = 0; + + return 0; +} + +void test_pramfs_write_cleanup(void) {} + +/* Module information */ +MODULE_LICENSE("GPL"); +module_init(test_pramfs_write); +module_exit(test_pramfs_write_cleanup); -- 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/