xref: /openbmc/u-boot/fs/ext4/ext4_common.h (revision e8f80a5a)
1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
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  *
18  * ext4write : Based on generic ext4 protocol.
19  */
20 
21 #ifndef __EXT4_COMMON__
22 #define __EXT4_COMMON__
23 #include <ext_common.h>
24 #include <ext4fs.h>
25 #include <malloc.h>
26 #include <linux/errno.h>
27 #if defined(CONFIG_EXT4_WRITE)
28 #include "ext4_journal.h"
29 #include "crc16.h"
30 #endif
31 
32 #define YES		1
33 #define NO		0
34 #define RECOVER	1
35 #define SCAN		0
36 
37 #define S_IFLNK		0120000		/* symbolic link */
38 #define BLOCK_NO_ONE		1
39 #define SUPERBLOCK_START	(2 * 512)
40 #define SUPERBLOCK_SIZE	1024
41 #define F_FILE			1
42 
zalloc(size_t size)43 static inline void *zalloc(size_t size)
44 {
45 	void *p = memalign(ARCH_DMA_MINALIGN, size);
46 	memset(p, 0, size);
47 	return p;
48 }
49 
50 int ext4fs_read_inode(struct ext2_data *data, int ino,
51 		      struct ext2_inode *inode);
52 int ext4fs_read_file(struct ext2fs_node *node, loff_t pos, loff_t len,
53 		     char *buf, loff_t *actread);
54 int ext4fs_find_file(const char *path, struct ext2fs_node *rootnode,
55 			struct ext2fs_node **foundnode, int expecttype);
56 int ext4fs_iterate_dir(struct ext2fs_node *dir, char *name,
57 			struct ext2fs_node **fnode, int *ftype);
58 
59 #if defined(CONFIG_EXT4_WRITE)
60 uint32_t ext4fs_div_roundup(uint32_t size, uint32_t n);
61 uint16_t ext4fs_checksum_update(unsigned int i);
62 int ext4fs_get_parent_inode_num(const char *dirname, char *dname, int flags);
63 int ext4fs_update_parent_dentry(char *filename, int file_type);
64 uint32_t ext4fs_get_new_blk_no(void);
65 int ext4fs_get_new_inode_no(void);
66 void ext4fs_reset_block_bmap(long int blockno, unsigned char *buffer,
67 					int index);
68 int ext4fs_set_block_bmap(long int blockno, unsigned char *buffer, int index);
69 int ext4fs_set_inode_bmap(int inode_no, unsigned char *buffer, int index);
70 void ext4fs_reset_inode_bmap(int inode_no, unsigned char *buffer, int index);
71 int ext4fs_iget(int inode_no, struct ext2_inode *inode);
72 void ext4fs_allocate_blocks(struct ext2_inode *file_inode,
73 				unsigned int total_remaining_blocks,
74 				unsigned int *total_no_of_block);
75 void put_ext4(uint64_t off, void *buf, uint32_t size);
76 struct ext2_block_group *ext4fs_get_group_descriptor
77 	(const struct ext_filesystem *fs, uint32_t bg_idx);
78 uint64_t ext4fs_bg_get_block_id(const struct ext2_block_group *bg,
79 	const struct ext_filesystem *fs);
80 uint64_t ext4fs_bg_get_inode_id(const struct ext2_block_group *bg,
81 	const struct ext_filesystem *fs);
82 uint64_t ext4fs_bg_get_inode_table_id(const struct ext2_block_group *bg,
83 	const struct ext_filesystem *fs);
84 uint64_t ext4fs_sb_get_free_blocks(const struct ext2_sblock *sb);
85 void ext4fs_sb_set_free_blocks(struct ext2_sblock *sb, uint64_t free_blocks);
86 uint32_t ext4fs_bg_get_free_blocks(const struct ext2_block_group *bg,
87 	const struct ext_filesystem *fs);
88 #endif
89 #endif
90