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    /*
     * (C) Copyright 2011 - 2012 Samsung Electronics
     * EXT4 filesystem implementation in Uboot by
     * Uma Shankar <uma.shankar@samsung.com>
     * Manjunatha C Achar <a.manjunatha@samsung.com>
     *
     * ext4ls and ext4load :  based on ext2 ls load support in Uboot.
     *
     * (C) Copyright 2004
     * esd gmbh <www.esd-electronics.com>
     * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
     *
     * based on code from grub2 fs/ext2.c and fs/fshelp.c by
     * GRUB  --  GRand Unified Bootloader
     * Copyright (C) 2003, 2004  Free Software Foundation, Inc.
     *
     * 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.  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.
     */
    
    #ifndef __EXT4_COMMON__
    #define __EXT4_COMMON__
    #include <ext_common.h>
    #include <ext4fs.h>
    #include <malloc.h>
    #include <asm/errno.h>
    
    #define YES		1
    #define NO		0
    #define TRUE		1
    #define FALSE		0
    #define RECOVER	1
    #define SCAN		0
    
    #define S_IFLNK		0120000		/* symbolic link */
    #define BLOCK_NO_ONE		1
    #define SUPERBLOCK_SECTOR	2
    #define SUPERBLOCK_SIZE	1024
    #define F_FILE			1
    
    #define zalloc(size) calloc(1, size)
    
    extern unsigned long part_offset;
    int ext4fs_read_inode(struct ext2_data *data, int ino,
    		      struct ext2_inode *inode);
    int ext4fs_read_file(struct ext2fs_node *node, int pos,
    		unsigned int len, char *buf);
    int ext4fs_find_file(const char *path, struct ext2fs_node *rootnode,
    			struct ext2fs_node **foundnode, int expecttype);
    int ext4fs_iterate_dir(struct ext2fs_node *dir, char *name,
    			struct ext2fs_node **fnode, int *ftype);
    #endif