/* -*- mode: c; c-basic-offset: 8; -*-
   * vim: noexpandtab sw=8 ts=8 sts=0:
   *
   *  linux/cluster/ssi/cfs/symlink.c
   *
   *	This program is free software; you can redistribute it and/or
   *	modify it under the terms of the GNU General Public License as
   *	published by the Free Software Foundation; either version 2 of
   *	the License, or (at your option) any later version.
   *
   *	This program is distributed in the hope that it will be useful,
   *	but WITHOUT ANY WARRANTY; without even the implied warranty of
   *	MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE
   *	or NON INFRINGEMENT.  See the GNU General Public License for more
   *	details.
   *
   * 	You should have received a copy of the GNU General Public License
   * 	along with this program; if not, write to the Free Software
   * 	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   *
   *	Questions/Comments/Bugfixes to ssic-linux-devel@lists.sourceforge.net
   *
   *  Copyright (C) 1992  Rick Sladkey
   *
   *  Optimization changes Copyright (C) 1994 Florian La Roche
   *
   *  Jun 7 1999, cache symlink lookups in the page cache.  -DaveM
   *
   *  Portions Copyright (C) 2001 Compaq Computer Corporation
   *
   *  ocfs2 symlink handling code.
   *
   *  Copyright (C) 2004, 2005 Oracle.
   *
   */
  
  #include <linux/fs.h>
  #include <linux/types.h>
  #include <linux/slab.h>
  #include <linux/pagemap.h>

  #include <linux/namei.h>

  #include <cluster/masklog.h>
  
  #include "ocfs2.h"
  
  #include "alloc.h"
  #include "file.h"
  #include "inode.h"
  #include "journal.h"
  #include "symlink.h"

  #include "xattr.h"

  
  #include "buffer_head_io.h"

  static int ocfs2_fast_symlink_readpage(struct file *unused, struct page *page)

  {

  	struct inode *inode = page->mapping->host;

  	struct buffer_head *bh = NULL;

  	int status = ocfs2_read_inode_block(inode, &bh);

  	struct ocfs2_dinode *fe;

  	const char *link;
  	void *kaddr;
  	size_t len;

  	if (status < 0) {
  		mlog_errno(status);

  		return status;

  	}

  	fe = (struct ocfs2_dinode *) bh->b_data;

  	link = (char *) fe->id2.i_symlink;

  	/* will be less than a page size */
  	len = strnlen(link, ocfs2_fast_symlink_chars(inode->i_sb));
  	kaddr = kmap_atomic(page);
  	memcpy(kaddr, link, len + 1);
  	kunmap_atomic(kaddr);
  	SetPageUptodate(page);
  	unlock_page(page);

  	brelse(bh);

  	return 0;

  }

  const struct address_space_operations ocfs2_fast_symlink_aops = {
  	.readpage		= ocfs2_fast_symlink_readpage,
  };

  const struct inode_operations ocfs2_symlink_inode_operations = {

  	.readlink	= generic_readlink,

  	.follow_link	= page_follow_link_light,
  	.put_link	= page_put_link,

  	.getattr	= ocfs2_getattr,

  	.setattr	= ocfs2_setattr,

  	.setxattr	= generic_setxattr,
  	.getxattr	= generic_getxattr,
  	.listxattr	= ocfs2_listxattr,
  	.removexattr	= generic_removexattr,

  	.fiemap		= ocfs2_fiemap,

  };