Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757210Ab0LPSEQ (ORCPT ); Thu, 16 Dec 2010 13:04:16 -0500 Received: from mail-ww0-f42.google.com ([74.125.82.42]:57140 "EHLO mail-ww0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757084Ab0LPSEK (ORCPT ); Thu, 16 Dec 2010 13:04:10 -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=kwsMk6X0SZEHSwF48dbeVXRBVN8uxi0Mc21R3XsOjg2wU9UerLTx1VyNxNXqHypzdA tvGV/34K+fAh09J4+394gmWMLmY/nu4z89RRIUkgEUdu8yGYElg6MkvpZzMRWCRx/niG 5w3ynLtuQbxUoVgMSGrvYxDv0iaNuL2rGynGM= Message-ID: <4D0A53CC.4020603@gmail.com> Date: Thu, 16 Dec 2010 19:00:44 +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 , Tim Bird , Andrew Morton Subject: [PATCH 07/16 v5] pramfs: symbolic links 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: 2643 Lines: 91 From: Marco Stornelli Symlink operations. Signed-off-by: Marco Stornelli --- diff -Nurp linux-2.6.36-orig/fs/pramfs/symlink.c linux-2.6.36/fs/pramfs/symlink.c --- linux-2.6.36-orig/fs/pramfs/symlink.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.36/fs/pramfs/symlink.c 2010-11-27 11:13:18.000000000 +0100 @@ -0,0 +1,76 @@ +/* + * BRIEF DESCRIPTION + * + * Symlink operations + * + * 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 "pram.h" +#include "xattr.h" + +int pram_block_symlink(struct inode *inode, const char *symname, int len) +{ + struct super_block *sb = inode->i_sb; + u64 block; + char *blockp; + int err; + + err = pram_alloc_blocks(inode, 0, 1); + if (err) + return err; + + block = pram_find_data_block(inode, 0); + blockp = pram_get_block(sb, block); + + pram_memunlock_block(sb, blockp); + memcpy(blockp, symname, len); + blockp[len] = '\0'; + pram_memlock_block(sb, blockp); + return 0; +} + +static int pram_readlink(struct dentry *dentry, char *buffer, int buflen) +{ + struct inode *inode = dentry->d_inode; + struct super_block *sb = inode->i_sb; + u64 block; + char *blockp; + + block = pram_find_data_block(inode, 0); + blockp = pram_get_block(sb, block); + return vfs_readlink(dentry, buffer, buflen, blockp); +} + +static void *pram_follow_link(struct dentry *dentry, struct nameidata *nd) +{ + struct inode *inode = dentry->d_inode; + struct super_block *sb = inode->i_sb; + off_t block; + int status; + char *blockp; + + block = pram_find_data_block(inode, 0); + blockp = pram_get_block(sb, block); + status = vfs_follow_link(nd, blockp); + return ERR_PTR(status); +} + +struct inode_operations pram_symlink_inode_operations = { + .readlink = pram_readlink, + .follow_link = pram_follow_link, + .setattr = pram_notify_change, +#ifdef CONFIG_PRAMFS_XATTR + .setxattr = generic_setxattr, + .getxattr = generic_getxattr, + .listxattr = pram_listxattr, + .removexattr = generic_removexattr, +#endif +}; -- 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/