/*
- * (C) Copyright 2011 - 2012 Samsung Electronics
- * EXT4 filesystem implementation in Uboot by
- * Uma Shankar <uma.shankar@samsung.com>
- * Manjunatha C Achar <a.manjunatha@samsung.com>
- *
- * Ext4 Extent data structures are taken from original ext4 fs code
- * as found in the linux kernel.
- *
- * Copyright (c) 2003-2006, Cluster File Systems, Inc, info@clusterfs.com
- * Written by Alex Tomas <alex@clusterfs.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Copyright (c) 2013 Samsung Electronics Co., Ltd. All rights reserved.
+ * Przemyslaw Marczak <p.marczak@samsung.com>
*/
#ifndef __EXT4__
#define __EXT4__
-#include <ext_common.h>
-#define EXT4_EXTENTS_FL 0x00080000 /* Inode uses extents */
-#define EXT4_EXT_MAGIC 0xf30a
-#define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010
-#define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040
-#define EXT4_INDIRECT_BLOCKS 12
-
-#define EXT4_BG_INODE_UNINIT 0x0001
-#define EXT4_BG_BLOCK_UNINIT 0x0002
-#define EXT4_BG_INODE_ZEROED 0x0004
-
-/*
- * ext4_inode has i_block array (60 bytes total).
- * The first 12 bytes store ext4_extent_header;
- * the remainder stores an array of ext4_extent.
- */
-
-/*
- * This is the extent on-disk structure.
- * It's used at the bottom of the tree.
- */
-struct ext4_extent {
- __le32 ee_block; /* first logical block extent covers */
- __le16 ee_len; /* number of blocks covered by extent */
- __le16 ee_start_hi; /* high 16 bits of physical block */
- __le32 ee_start_lo; /* low 32 bits of physical block */
-};
-
-/*
- * This is index on-disk structure.
- * It's used at all the levels except the bottom.
- */
-struct ext4_extent_idx {
- __le32 ei_block; /* index covers logical blocks from 'block' */
- __le32 ei_leaf_lo; /* pointer to the physical block of the next *
- * level. leaf or next index could be there */
- __le16 ei_leaf_hi; /* high 16 bits of physical block */
- __u16 ei_unused;
-};
-
-/* Each block (leaves and indexes), even inode-stored has header. */
-struct ext4_extent_header {
- __le16 eh_magic; /* probably will support different formats */
- __le16 eh_entries; /* number of valid entries */
- __le16 eh_max; /* capacity of store in entries */
- __le16 eh_depth; /* has tree real underlying blocks? */
- __le32 eh_generation; /* generation of the tree */
-};
-
-struct ext_filesystem {
- /* Total Sector of partition */
- uint64_t total_sect;
- /* Block size of partition */
- uint32_t blksz;
- /* Inode size of partition */
- uint32_t inodesz;
- /* Sectors per Block */
- uint32_t sect_perblk;
- /* Group Descriptor Block Number */
- uint32_t gdtable_blkno;
- /* Total block groups of partition */
- uint32_t no_blkgrp;
- /* No of blocks required for bgdtable */
- uint32_t no_blk_pergdt;
- /* Superblock */
- struct ext2_sblock *sb;
- /* Block group descritpor table */
- struct ext2_block_group *bgd;
- char *gdtable;
-
- /* Block Bitmap Related */
- unsigned char **blk_bmaps;
- long int curr_blkno;
- uint16_t first_pass_bbmap;
-
- /* Inode Bitmap Related */
- unsigned char **inode_bmaps;
- int curr_inode_no;
- uint16_t first_pass_ibmap;
-
- /* Journal Related */
-
- /* Block Device Descriptor */
- block_dev_desc_t *dev_desc;
-};
-
-extern struct ext2_data *ext4fs_root;
-extern struct ext2fs_node *ext4fs_file;
-
-#if defined(CONFIG_EXT4_WRITE)
-extern struct ext2_inode *g_parent_inode;
-extern int gd_index;
-extern int gindex;
-
-int ext4fs_init(void);
-void ext4fs_deinit(void);
-int ext4fs_filename_check(char *filename);
-int ext4fs_write(const char *fname, unsigned char *buffer,
- unsigned long sizebytes);
-#endif
-
-struct ext_filesystem *get_fs(void);
+void put_ext4(block_dev_desc_t *dev_desc,uint64_t off, void *buf, uint32_t size);
+int ext4_register_device (block_dev_desc_t * dev_desc, int part_no);
+int ext4fs_existing_filename_check(block_dev_desc_t *dev_desc,char *filename);
+int ext4fs_delete_file(block_dev_desc_t *dev_desc, unsigned int inodeno);
+int ext4fs_create_dir (block_dev_desc_t *dev_desc, char *dirname);
+int ext4fs_create_symlink (block_dev_desc_t *dev_desc, int link_type,
+ char *src_path, char *target_path);
+int ext4fs_ls (const char *dirname);
int ext4fs_open(const char *filename);
-int ext4fs_read(char *buf, unsigned len);
+int ext4fs_close(void);
int ext4fs_mount(unsigned part_length);
-void ext4fs_close(void);
-int ext4fs_ls(const char *dirname);
-int ext4fs_exists(const char *filename);
-void ext4fs_free_node(struct ext2fs_node *node, struct ext2fs_node *currroot);
-int ext4fs_devread(lbaint_t sector, int byte_offset, int byte_len, char *buf);
-void ext4fs_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info);
-long int read_allocated_block(struct ext2_inode *inode, int fileblock);
-int ext4fs_probe(block_dev_desc_t *fs_dev_desc,
- disk_partition_t *fs_partition);
-int ext4_read_file(const char *filename, void *buf, int offset, int len);
-int ext4_read_superblock(char *buffer);
-#endif
+int ext4fs_read(char *buf, unsigned len);
+int ext4fs_write(block_dev_desc_t *dev_desc, int part_no,char *fname,
+ unsigned char* buffer,unsigned long sizebytes);
+
+
+#endif
\ No newline at end of file
projects / platform / kernel / u-boot.git / blobdiff