From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753807Ab1AFMGf (ORCPT ); Thu, 6 Jan 2011 07:06:35 -0500 Received: from mail-ww0-f44.google.com ([74.125.82.44]:62225 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753757Ab1AFMGc (ORCPT ); Thu, 6 Jan 2011 07:06:32 -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=FHPL+lKT6rifnxBuX8B2kgFwyr2+nchsIVPaaK62Vu5FUkFtlPuK5yjOr9sFoT8p38 CTcIJpB3iL3uOSYpRE1Wp3We0DRT1AB0euU49q/TBd0+y5xs6UfwrsCIPbfAeSZag3qp 7sB0B0lattLG2FiX12owyv48kh4CdYfJT/8Po= Message-ID: <4D25AF5B.3060301@gmail.com> Date: Thu, 06 Jan 2011 13:02:35 +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 , Linux Embedded , Linux FS Devel , Tim Bird Subject: [PATCH 07/17] pramfs: symlink operations 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 Symlink operations. Signed-off-by: Marco Stornelli --- diff --git a/fs/pramfs/symlink.c b/fs/pramfs/symlink.c new file mode 100644 index 0000000..f129271 --- /dev/null +++ b/fs/pramfs/symlink.c @@ -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 +};