Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765696AbZFMN2a (ORCPT ); Sat, 13 Jun 2009 09:28:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1764544AbZFMN0p (ORCPT ); Sat, 13 Jun 2009 09:26:45 -0400 Received: from mail-fx0-f216.google.com ([209.85.220.216]:37936 "EHLO mail-fx0-f216.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932072AbZFMN0n (ORCPT ); Sat, 13 Jun 2009 09:26:43 -0400 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=NDHJpqehz0U1fvfbGcJ+kpbrfsHc3PVRBtYXANfO1dz1Ege4VjHSJlz042Afd4a13+ pNC2JanBKrsgOP+4mKLs3nG1Bcj5nR82p+Kk9hLkl9nR3DZex0iu1HhZarEoDcVEOcsA zbST32yPORLqYUeefOjryI5xkKTgIIrg9+YWI= Message-ID: <4A33A82B.9070306@gmail.com> Date: Sat, 13 Jun 2009 15:22:51 +0200 From: Marco User-Agent: Thunderbird 2.0.0.19 (X11/20081227) MIME-Version: 1.0 To: Linux FS Devel CC: Linux Embedded , Linux Kernel , Daniel Walker Subject: [PATCH 12/14] 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: 1941 Lines: 66 From: Marco Stornelli Test module. Signed-off-by: Marco Stornelli --- diff -uprN linux-2.6.30-orig/fs/pramfs/pramfs_test.c linux-2.6.30/fs/pramfs/pramfs_test.c --- linux-2.6.30-orig/fs/pramfs/pramfs_test.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.30/fs/pramfs/pramfs_test.c 2009-06-13 13:07:38.000000000 +0200 @@ -0,0 +1,50 @@ +/* + * FILE NAME fs/pramfs/namei.c + * + * BRIEF DESCRIPTION + * + * Inode operations for directories. + * + * Copyright 2009 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_fs.h" + +int __init test_pramfs_write(void) +{ + struct pram_super_block *psb; + char *ptr; + + 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 all information in the superblock, + * this should cause a kernel page protection fault. + */ + printk("%s: writing to kernel VA %p\n", __func__, psb); + memset(psb, 0 , PRAM_SB_SIZE); + + 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/