1*83d290c5STom Rini /* SPDX-License-Identifier: GPL-2.0+ */
2a1596438SUma Shankar /*
3a1596438SUma Shankar * (C) Copyright 2011 - 2012 Samsung Electronics
4a1596438SUma Shankar * EXT4 filesystem implementation in Uboot by
5a1596438SUma Shankar * Uma Shankar <uma.shankar@samsung.com>
6a1596438SUma Shankar * Manjunatha C Achar <a.manjunatha@samsung.com>
7a1596438SUma Shankar *
8a1596438SUma Shankar * ext4ls and ext4load : based on ext2 ls load support in Uboot.
9a1596438SUma Shankar *
10a1596438SUma Shankar * (C) Copyright 2004
11a1596438SUma Shankar * esd gmbh <www.esd-electronics.com>
12a1596438SUma Shankar * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
13a1596438SUma Shankar *
14a1596438SUma Shankar * based on code from grub2 fs/ext2.c and fs/fshelp.c by
15a1596438SUma Shankar * GRUB -- GRand Unified Bootloader
16a1596438SUma Shankar * Copyright (C) 2003, 2004 Free Software Foundation, Inc.
17a1596438SUma Shankar *
18ed34f34dSUma Shankar * ext4write : Based on generic ext4 protocol.
19a1596438SUma Shankar */
20a1596438SUma Shankar
21a1596438SUma Shankar #ifndef __EXT4_COMMON__
22a1596438SUma Shankar #define __EXT4_COMMON__
23a1596438SUma Shankar #include <ext_common.h>
24a1596438SUma Shankar #include <ext4fs.h>
25a1596438SUma Shankar #include <malloc.h>
261221ce45SMasahiro Yamada #include <linux/errno.h>
2703e2ecf6SStephen Warren #if defined(CONFIG_EXT4_WRITE)
28ed34f34dSUma Shankar #include "ext4_journal.h"
29ed34f34dSUma Shankar #include "crc16.h"
30ed34f34dSUma Shankar #endif
31a1596438SUma Shankar
32a1596438SUma Shankar #define YES 1
33a1596438SUma Shankar #define NO 0
34a1596438SUma Shankar #define RECOVER 1
35a1596438SUma Shankar #define SCAN 0
36a1596438SUma Shankar
37a1596438SUma Shankar #define S_IFLNK 0120000 /* symbolic link */
38a1596438SUma Shankar #define BLOCK_NO_ONE 1
3950ce4c07SEgbert Eich #define SUPERBLOCK_START (2 * 512)
40a1596438SUma Shankar #define SUPERBLOCK_SIZE 1024
41a1596438SUma Shankar #define F_FILE 1
42a1596438SUma Shankar
zalloc(size_t size)4355b523b7SStephen Warren static inline void *zalloc(size_t size)
4455b523b7SStephen Warren {
4555b523b7SStephen Warren void *p = memalign(ARCH_DMA_MINALIGN, size);
4655b523b7SStephen Warren memset(p, 0, size);
4755b523b7SStephen Warren return p;
4855b523b7SStephen Warren }
49a1596438SUma Shankar
50a1596438SUma Shankar int ext4fs_read_inode(struct ext2_data *data, int ino,
51a1596438SUma Shankar struct ext2_inode *inode);
529f12cd0eSSuriyan Ramasami int ext4fs_read_file(struct ext2fs_node *node, loff_t pos, loff_t len,
539f12cd0eSSuriyan Ramasami char *buf, loff_t *actread);
54a1596438SUma Shankar int ext4fs_find_file(const char *path, struct ext2fs_node *rootnode,
55a1596438SUma Shankar struct ext2fs_node **foundnode, int expecttype);
56a1596438SUma Shankar int ext4fs_iterate_dir(struct ext2fs_node *dir, char *name,
57a1596438SUma Shankar struct ext2fs_node **fnode, int *ftype);
58ed34f34dSUma Shankar
5903e2ecf6SStephen Warren #if defined(CONFIG_EXT4_WRITE)
60ed34f34dSUma Shankar uint32_t ext4fs_div_roundup(uint32_t size, uint32_t n);
6158a9ecbaSMichael Walle uint16_t ext4fs_checksum_update(unsigned int i);
62ed34f34dSUma Shankar int ext4fs_get_parent_inode_num(const char *dirname, char *dname, int flags);
63a0d767e2SStefan Brüns int ext4fs_update_parent_dentry(char *filename, int file_type);
6458a9ecbaSMichael Walle uint32_t ext4fs_get_new_blk_no(void);
65ed34f34dSUma Shankar int ext4fs_get_new_inode_no(void);
66ed34f34dSUma Shankar void ext4fs_reset_block_bmap(long int blockno, unsigned char *buffer,
67ed34f34dSUma Shankar int index);
68ed34f34dSUma Shankar int ext4fs_set_block_bmap(long int blockno, unsigned char *buffer, int index);
69ed34f34dSUma Shankar int ext4fs_set_inode_bmap(int inode_no, unsigned char *buffer, int index);
70ed34f34dSUma Shankar void ext4fs_reset_inode_bmap(int inode_no, unsigned char *buffer, int index);
71ed34f34dSUma Shankar int ext4fs_iget(int inode_no, struct ext2_inode *inode);
72ed34f34dSUma Shankar void ext4fs_allocate_blocks(struct ext2_inode *file_inode,
73ed34f34dSUma Shankar unsigned int total_remaining_blocks,
74ed34f34dSUma Shankar unsigned int *total_no_of_block);
75ed34f34dSUma Shankar void put_ext4(uint64_t off, void *buf, uint32_t size);
769f5dd8b6SStefan Brüns struct ext2_block_group *ext4fs_get_group_descriptor
779f5dd8b6SStefan Brüns (const struct ext_filesystem *fs, uint32_t bg_idx);
789f5dd8b6SStefan Brüns uint64_t ext4fs_bg_get_block_id(const struct ext2_block_group *bg,
799f5dd8b6SStefan Brüns const struct ext_filesystem *fs);
809f5dd8b6SStefan Brüns uint64_t ext4fs_bg_get_inode_id(const struct ext2_block_group *bg,
819f5dd8b6SStefan Brüns const struct ext_filesystem *fs);
829f5dd8b6SStefan Brüns uint64_t ext4fs_bg_get_inode_table_id(const struct ext2_block_group *bg,
839f5dd8b6SStefan Brüns const struct ext_filesystem *fs);
849f5dd8b6SStefan Brüns uint64_t ext4fs_sb_get_free_blocks(const struct ext2_sblock *sb);
859f5dd8b6SStefan Brüns void ext4fs_sb_set_free_blocks(struct ext2_sblock *sb, uint64_t free_blocks);
869f5dd8b6SStefan Brüns uint32_t ext4fs_bg_get_free_blocks(const struct ext2_block_group *bg,
879f5dd8b6SStefan Brüns const struct ext_filesystem *fs);
88ed34f34dSUma Shankar #endif
89a1596438SUma Shankar #endif
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