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 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