2 * (C) Copyright 2011 - 2012 Samsung Electronics
3 * EXT4 filesystem implementation in Uboot by
4 * Uma Shankar <uma.shankar@samsung.com>
5 * Manjunatha C Achar <a.manjunatha@samsung.com>
7 * ext4ls and ext4load : based on ext2 ls load support in Uboot.
10 * esd gmbh <www.esd-electronics.com>
11 * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
13 * based on code from grub2 fs/ext2.c and fs/fshelp.c by
14 * GRUB -- GRand Unified Bootloader
15 * Copyright (C) 2003, 2004 Free Software Foundation, Inc.
17 * ext4write : Based on generic ext4 protocol.
19 * This program is free software; you can redistribute it and/or modify
20 * it under the terms of the GNU General Public License as published by
21 * the Free Software Foundation; either version 2 of the License, or
22 * (at your option) any later version.
24 * This program is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27 * GNU General Public License for more details.
29 * You should have received a copy of the GNU General Public License
30 * along with this program; if not, write to the Free Software
31 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
34 #ifndef __EXT4_COMMON__
35 #define __EXT4_COMMON__
36 #include <ext_common.h>
39 #include <asm/errno.h>
40 #if defined(CONFIG_EXT4_WRITE)
41 #include "ext4_journal.h"
50 #define S_IFLNK 0120000 /* symbolic link */
51 #define BLOCK_NO_ONE 1
52 #define SUPERBLOCK_SECTOR 2
53 #define SUPERBLOCK_SIZE 1024
56 static inline void *zalloc(size_t size)
58 void *p = memalign(ARCH_DMA_MINALIGN, size);
63 int ext4fs_read_inode(struct ext2_data *data, int ino,
64 struct ext2_inode *inode);
65 int ext4fs_read_file(struct ext2fs_node *node, int pos,
66 unsigned int len, char *buf);
67 int ext4fs_find_file(const char *path, struct ext2fs_node *rootnode,
68 struct ext2fs_node **foundnode, int expecttype);
69 int ext4fs_iterate_dir(struct ext2fs_node *dir, char *name,
70 struct ext2fs_node **fnode, int *ftype);
72 #if defined(CONFIG_EXT4_WRITE)
73 uint32_t ext4fs_div_roundup(uint32_t size, uint32_t n);
74 int ext4fs_checksum_update(unsigned int i);
75 int ext4fs_get_parent_inode_num(const char *dirname, char *dname, int flags);
76 void ext4fs_update_parent_dentry(char *filename, int *p_ino, int file_type);
77 long int ext4fs_get_new_blk_no(void);
78 int ext4fs_get_new_inode_no(void);
79 void ext4fs_reset_block_bmap(long int blockno, unsigned char *buffer,
81 int ext4fs_set_block_bmap(long int blockno, unsigned char *buffer, int index);
82 int ext4fs_set_inode_bmap(int inode_no, unsigned char *buffer, int index);
83 void ext4fs_reset_inode_bmap(int inode_no, unsigned char *buffer, int index);
84 int ext4fs_iget(int inode_no, struct ext2_inode *inode);
85 void ext4fs_allocate_blocks(struct ext2_inode *file_inode,
86 unsigned int total_remaining_blocks,
87 unsigned int *total_no_of_block);
88 void put_ext4(uint64_t off, void *buf, uint32_t size);