From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754114Ab1AFMIf (ORCPT ); Thu, 6 Jan 2011 07:08:35 -0500 Received: from mail-ww0-f42.google.com ([74.125.82.42]:44086 "EHLO mail-ww0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753965Ab1AFMIa (ORCPT ); Thu, 6 Jan 2011 07:08:30 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; b=d29eAhduwqgSEFUldSm0wA1B7Jaoo552ULHlQlIdx7muHBlRAsTd12aek+rusT+HJ6 Qh22o/cvBb3Q1nu7K3E/6mAuk90kANY8iuW20dg69C2/VTObicH6FtfvMocXwwW7qHx6 L9y3Kt68kemMizixyXmayOhYgi7BcKy/zrmYA= Message-ID: <4D25AFD0.9030809@gmail.com> Date: Thu, 06 Jan 2011 13:04:32 +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 , Linux Embedded , Linux FS Devel , Tim Bird Subject: [PATCH 15/17] 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 From: Marco Stornelli Test module. Signed-off-by: Marco Stornelli --- diff --git a/fs/pramfs/pramfs_test.c b/fs/pramfs/pramfs_test.c new file mode 100644 index 0000000..24e016f --- /dev/null +++ b/fs/pramfs/pramfs_test.c @@ -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);