Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751261Ab3IGIgT (ORCPT ); Sat, 7 Sep 2013 04:36:19 -0400 Received: from mail-ea0-f176.google.com ([209.85.215.176]:36955 "EHLO mail-ea0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751068Ab3IGIgR (ORCPT ); Sat, 7 Sep 2013 04:36:17 -0400 Message-ID: <522AE3DB.7000209@gmail.com> Date: Sat, 07 Sep 2013 10:29:15 +0200 From: Marco Stornelli User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130620 Thunderbird/17.0.7 MIME-Version: 1.0 To: Vladimir Davydov CC: linux-kernel@vger.kernel.org, Linux FS Devel Subject: [PATCH 12/19] 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 Content-Length: 2699 Lines: 97 Add symlink operations. Signed-off-by: Marco Stornelli --- fs/pramfs/symlink.c | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 76 insertions(+), 0 deletions(-) create mode 100644 fs/pramfs/symlink.c diff --git a/fs/pramfs/symlink.c b/fs/pramfs/symlink.c new file mode 100644 index 0000000..0d5213f --- /dev/null +++ b/fs/pramfs/symlink.c @@ -0,0 +1,76 @@ +/* + * BRIEF DESCRIPTION + * + * Symlink operations + * + * Copyright 2009-2011 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 __user *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); +} + +const 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 +}; -- 1.7.3.4 -- 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/