Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752531Ab0KTKDN (ORCPT ); Sat, 20 Nov 2010 05:03:13 -0500 Received: from mail-bw0-f46.google.com ([209.85.214.46]:47076 "EHLO mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750761Ab0KTKDK (ORCPT ); Sat, 20 Nov 2010 05:03:10 -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=ZcohlA6B9bgQIpPyPt3Qfwfa7xedaMNUrm1kC2ljgod8d60ggirthmozk1GeLrsv4N XAvbG1KUMJi0C1Po7qRBebjLg3S9J999YpRvSWAhejNvBb3TDbKddz2i3ZoPq/pHw8/J W2TJb3l+4v6A5P7kpkVsLybjyTu/9URmIumQk= Message-ID: <4CE79C19.9070509@gmail.com> Date: Sat, 20 Nov 2010 10:59:53 +0100 From: Marco Stornelli User-Agent: Mozilla/5.0 (X11; U; Linux i686; it; rv:1.9.1.9) Gecko/20100317 SUSE/3.0.4-1.1.1 Thunderbird/3.0.4 MIME-Version: 1.0 To: Linux Kernel CC: Linux Embedded , Linux FS Devel , Tim Bird , Andrew Morton , Greg Kroah-Hartman Subject: [PATCH 07/16 v4] pramfs: symbolic links Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2683 Lines: 94 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 2010-09-14 18:49:52.000000000 +0200 @@ -0,0 +1,78 @@ +/* + * FILE NAME fs/pramfs/symlink.c + * + * 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/