1 /* 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> 6 * 7 * ext4ls and ext4load : based on ext2 ls load support in Uboot. 8 * 9 * (C) Copyright 2004 10 * esd gmbh <www.esd-electronics.com> 11 * Reinhard Arlt <reinhard.arlt@esd-electronics.com> 12 * 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. 16 * 17 * ext4write : Based on generic ext4 protocol. 18 * 19 * SPDX-License-Identifier: GPL-2.0+ 20 */ 21 22 #ifndef __EXT4_COMMON__ 23 #define __EXT4_COMMON__ 24 #include <ext_common.h> 25 #include <ext4fs.h> 26 #include <malloc.h> 27 #include <asm/errno.h> 28 #if defined(CONFIG_EXT4_WRITE) 29 #include "ext4_journal.h" 30 #include "crc16.h" 31 #endif 32 33 #define YES 1 34 #define NO 0 35 #define RECOVER 1 36 #define SCAN 0 37 38 #define S_IFLNK 0120000 /* symbolic link */ 39 #define BLOCK_NO_ONE 1 40 #define SUPERBLOCK_START (2 * 512) 41 #define SUPERBLOCK_SIZE 1024 42 #define F_FILE 1 43 44 static inline void *zalloc(size_t size) 45 { 46 void *p = memalign(ARCH_DMA_MINALIGN, size); 47 memset(p, 0, size); 48 return p; 49 } 50 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); 59 60 #if defined(CONFIG_EXT4_WRITE) 61 uint32_t ext4fs_div_roundup(uint32_t size, uint32_t n); 62 int ext4fs_checksum_update(unsigned int i); 63 int ext4fs_get_parent_inode_num(const char *dirname, char *dname, int flags); 64 void ext4fs_update_parent_dentry(char *filename, int *p_ino, int file_type); 65 long int 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, 68 int index); 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 #endif 78 #endif 79