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 * SPDX-License-Identifier: GPL-2.0+
22 #ifndef __EXT4_COMMON__
23 #define __EXT4_COMMON__
24 #include <ext_common.h>
27 #include <linux/errno.h>
28 #if defined(CONFIG_EXT4_WRITE)
29 #include "ext4_journal.h"
38 #define S_IFLNK 0120000 /* symbolic link */
39 #define BLOCK_NO_ONE 1
40 #define SUPERBLOCK_START (2 * 512)
41 #define SUPERBLOCK_SIZE 1024
44 static inline void *zalloc(size_t size)
46 void *p = memalign(ARCH_DMA_MINALIGN, size);
51 int ext4fs_read_inode(struct ext2_data *data, int ino,
52 struct ext2_inode *inode);
53 int ext4fs_read_file(struct ext2fs_node *node, loff_t pos, loff_t len,
54 char *buf, loff_t *actread);
55 int ext4fs_find_file(const char *path, struct ext2fs_node *rootnode,
56 struct ext2fs_node **foundnode, int expecttype);
57 int ext4fs_iterate_dir(struct ext2fs_node *dir, char *name,
58 struct ext2fs_node **fnode, int *ftype);
60 #if defined(CONFIG_EXT4_WRITE)
61 uint32_t ext4fs_div_roundup(uint32_t size, uint32_t n);
62 uint16_t ext4fs_checksum_update(unsigned int i);
63 int ext4fs_get_parent_inode_num(const char *dirname, char *dname, int flags);
64 int ext4fs_update_parent_dentry(char *filename, int file_type);
65 uint32_t ext4fs_get_new_blk_no(void);
66 int ext4fs_get_new_inode_no(void);
67 void ext4fs_reset_block_bmap(long int blockno, unsigned char *buffer,
69 int ext4fs_set_block_bmap(long int blockno, unsigned char *buffer, int index);
70 int ext4fs_set_inode_bmap(int inode_no, unsigned char *buffer, int index);
71 void ext4fs_reset_inode_bmap(int inode_no, unsigned char *buffer, int index);
72 int ext4fs_iget(int inode_no, struct ext2_inode *inode);
73 void ext4fs_allocate_blocks(struct ext2_inode *file_inode,
74 unsigned int total_remaining_blocks,
75 unsigned int *total_no_of_block);
76 void put_ext4(uint64_t off, void *buf, uint32_t size);
77 struct ext2_block_group *ext4fs_get_group_descriptor
78 (const struct ext_filesystem *fs, uint32_t bg_idx);
79 uint64_t ext4fs_bg_get_block_id(const struct ext2_block_group *bg,
80 const struct ext_filesystem *fs);
81 uint64_t ext4fs_bg_get_inode_id(const struct ext2_block_group *bg,
82 const struct ext_filesystem *fs);
83 uint64_t ext4fs_bg_get_inode_table_id(const struct ext2_block_group *bg,
84 const struct ext_filesystem *fs);
85 uint64_t ext4fs_sb_get_free_blocks(const struct ext2_sblock *sb);
86 void ext4fs_sb_set_free_blocks(struct ext2_sblock *sb, uint64_t free_blocks);
87 uint32_t ext4fs_bg_get_free_blocks(const struct ext2_block_group *bg,
88 const struct ext_filesystem *fs);