/*
   * (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.
   *

   * ext4write : Based on generic ext4 protocol.
   *

   * SPDX-License-Identifier:	GPL-2.0+

   */
  
  #ifndef __EXT4_COMMON__
  #define __EXT4_COMMON__
  #include <ext_common.h>
  #include <ext4fs.h>
  #include <malloc.h>

  #include <linux/errno.h>

  #if defined(CONFIG_EXT4_WRITE)

  #include "ext4_journal.h"
  #include "crc16.h"
  #endif

  
  #define YES		1
  #define NO		0

  #define RECOVER	1
  #define SCAN		0
  
  #define S_IFLNK		0120000		/* symbolic link */
  #define BLOCK_NO_ONE		1

  #define SUPERBLOCK_START	(2 * 512)

  #define SUPERBLOCK_SIZE	1024
  #define F_FILE			1

  static inline void *zalloc(size_t size)
  {
  	void *p = memalign(ARCH_DMA_MINALIGN, size);
  	memset(p, 0, size);
  	return p;
  }

  int ext4fs_read_inode(struct ext2_data *data, int ino,
  		      struct ext2_inode *inode);

  int ext4fs_read_file(struct ext2fs_node *node, loff_t pos, loff_t len,
  		     char *buf, loff_t *actread);

  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);

  #if defined(CONFIG_EXT4_WRITE)

  uint32_t ext4fs_div_roundup(uint32_t size, uint32_t n);

  uint16_t ext4fs_checksum_update(unsigned int i);

  int ext4fs_get_parent_inode_num(const char *dirname, char *dname, int flags);

  int ext4fs_update_parent_dentry(char *filename, int file_type);

  uint32_t ext4fs_get_new_blk_no(void);

  int ext4fs_get_new_inode_no(void);
  void ext4fs_reset_block_bmap(long int blockno, unsigned char *buffer,
  					int index);
  int ext4fs_set_block_bmap(long int blockno, unsigned char *buffer, int index);
  int ext4fs_set_inode_bmap(int inode_no, unsigned char *buffer, int index);
  void ext4fs_reset_inode_bmap(int inode_no, unsigned char *buffer, int index);
  int ext4fs_iget(int inode_no, struct ext2_inode *inode);
  void ext4fs_allocate_blocks(struct ext2_inode *file_inode,
  				unsigned int total_remaining_blocks,
  				unsigned int *total_no_of_block);
  void put_ext4(uint64_t off, void *buf, uint32_t size);

  struct ext2_block_group *ext4fs_get_group_descriptor
  	(const struct ext_filesystem *fs, uint32_t bg_idx);
  uint64_t ext4fs_bg_get_block_id(const struct ext2_block_group *bg,
  	const struct ext_filesystem *fs);
  uint64_t ext4fs_bg_get_inode_id(const struct ext2_block_group *bg,
  	const struct ext_filesystem *fs);
  uint64_t ext4fs_bg_get_inode_table_id(const struct ext2_block_group *bg,
  	const struct ext_filesystem *fs);
  uint64_t ext4fs_sb_get_free_blocks(const struct ext2_sblock *sb);
  void ext4fs_sb_set_free_blocks(struct ext2_sblock *sb, uint64_t free_blocks);
  uint32_t ext4fs_bg_get_free_blocks(const struct ext2_block_group *bg,
  	const struct ext_filesystem *fs);

  #endif

  #endif