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Tom Rini83d290c2018-05-06 17:58:06 -04001/* SPDX-License-Identifier: GPL-2.0+ */
Uma Shankara1596432012-05-25 21:21:44 +05302/*
3 * (C) Copyright 2011 - 2012 Samsung Electronics
4 * EXT4 filesystem implementation in Uboot by
5 * Uma Shankar <uma.shankar@samsung.com>
6 * Manjunatha C Achar <a.manjunatha@samsung.com>
7 *
8 * ext4ls and ext4load : based on ext2 ls load support in Uboot.
9 *
10 * (C) Copyright 2004
11 * esd gmbh <www.esd-electronics.com>
12 * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
13 *
14 * based on code from grub2 fs/ext2.c and fs/fshelp.c by
15 * GRUB -- GRand Unified Bootloader
16 * Copyright (C) 2003, 2004 Free Software Foundation, Inc.
17 *
Uma Shankared34f342012-05-25 21:22:49 +053018 * ext4write : Based on generic ext4 protocol.
Uma Shankara1596432012-05-25 21:21:44 +053019 */
20
21#ifndef __EXT4_COMMON__
22#define __EXT4_COMMON__
23#include <ext_common.h>
24#include <ext4fs.h>
25#include <malloc.h>
Simon Glass90526e92020-05-10 11:39:56 -060026#include <asm/cache.h>
Masahiro Yamada1221ce42016-09-21 11:28:55 +090027#include <linux/errno.h>
Stephen Warren03e2ecf2012-10-22 06:43:50 +000028#if defined(CONFIG_EXT4_WRITE)
Uma Shankared34f342012-05-25 21:22:49 +053029#include "ext4_journal.h"
Pali Rohár4f0e77f2022-04-12 11:20:43 +020030#include <linux/crc16.h>
Uma Shankared34f342012-05-25 21:22:49 +053031#endif
Uma Shankara1596432012-05-25 21:21:44 +053032
33#define YES 1
34#define NO 0
Uma Shankara1596432012-05-25 21:21:44 +053035#define RECOVER 1
36#define SCAN 0
37
38#define S_IFLNK 0120000 /* symbolic link */
39#define BLOCK_NO_ONE 1
Egbert Eich50ce4c02013-05-01 01:13:19 +000040#define SUPERBLOCK_START (2 * 512)
Uma Shankara1596432012-05-25 21:21:44 +053041#define SUPERBLOCK_SIZE 1024
42#define F_FILE 1
43
Stephen Warren55b523b2012-09-18 08:05:28 +000044static inline void *zalloc(size_t size)
45{
46 void *p = memalign(ARCH_DMA_MINALIGN, size);
47 memset(p, 0, size);
48 return p;
49}
Uma Shankara1596432012-05-25 21:21:44 +053050
Uma Shankara1596432012-05-25 21:21:44 +053051int ext4fs_read_inode(struct ext2_data *data, int ino,
52 struct ext2_inode *inode);
Suriyan Ramasami9f12cd02014-11-17 14:39:36 -080053int ext4fs_read_file(struct ext2fs_node *node, loff_t pos, loff_t len,
54 char *buf, loff_t *actread);
Uma Shankara1596432012-05-25 21:21:44 +053055int ext4fs_find_file(const char *path, struct ext2fs_node *rootnode,
56 struct ext2fs_node **foundnode, int expecttype);
57int ext4fs_iterate_dir(struct ext2fs_node *dir, char *name,
58 struct ext2fs_node **fnode, int *ftype);
Uma Shankared34f342012-05-25 21:22:49 +053059
Stephen Warren03e2ecf2012-10-22 06:43:50 +000060#if defined(CONFIG_EXT4_WRITE)
Uma Shankared34f342012-05-25 21:22:49 +053061uint32_t ext4fs_div_roundup(uint32_t size, uint32_t n);
Michael Walle58a9ecb2016-09-01 11:21:40 +020062uint16_t ext4fs_checksum_update(unsigned int i);
Uma Shankared34f342012-05-25 21:22:49 +053063int ext4fs_get_parent_inode_num(const char *dirname, char *dname, int flags);
Stefan Brünsa0d767e2016-09-06 04:36:42 +020064int ext4fs_update_parent_dentry(char *filename, int file_type);
Michael Walle58a9ecb2016-09-01 11:21:40 +020065uint32_t ext4fs_get_new_blk_no(void);
Uma Shankared34f342012-05-25 21:22:49 +053066int ext4fs_get_new_inode_no(void);
67void ext4fs_reset_block_bmap(long int blockno, unsigned char *buffer,
68 int index);
69int ext4fs_set_block_bmap(long int blockno, unsigned char *buffer, int index);
70int ext4fs_set_inode_bmap(int inode_no, unsigned char *buffer, int index);
71void ext4fs_reset_inode_bmap(int inode_no, unsigned char *buffer, int index);
72int ext4fs_iget(int inode_no, struct ext2_inode *inode);
73void ext4fs_allocate_blocks(struct ext2_inode *file_inode,
74 unsigned int total_remaining_blocks,
75 unsigned int *total_no_of_block);
Jean-Jacques Hiblotb0001802019-02-13 12:15:24 +010076void put_ext4(uint64_t off, const void *buf, uint32_t size);
Stefan Brüns9f5dd8b2016-09-20 01:12:42 +020077struct ext2_block_group *ext4fs_get_group_descriptor
78 (const struct ext_filesystem *fs, uint32_t bg_idx);
79uint64_t ext4fs_bg_get_block_id(const struct ext2_block_group *bg,
80 const struct ext_filesystem *fs);
81uint64_t ext4fs_bg_get_inode_id(const struct ext2_block_group *bg,
82 const struct ext_filesystem *fs);
83uint64_t ext4fs_bg_get_inode_table_id(const struct ext2_block_group *bg,
84 const struct ext_filesystem *fs);
85uint64_t ext4fs_sb_get_free_blocks(const struct ext2_sblock *sb);
86void ext4fs_sb_set_free_blocks(struct ext2_sblock *sb, uint64_t free_blocks);
87uint32_t ext4fs_bg_get_free_blocks(const struct ext2_block_group *bg,
88 const struct ext_filesystem *fs);
Uma Shankared34f342012-05-25 21:22:49 +053089#endif
Uma Shankara1596432012-05-25 21:21:44 +053090#endif