fs/ext4/ext4_common.h

   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  * This program is free software; you can redistribute it and/or modify
  20  * it under the terms of the GNU General Public License as published by
  21  * the Free Software Foundation; either version 2 of the License, or
  22  * (at your option) any later version.
  23  *
  24  * This program is distributed in the hope that it will be useful,
  25  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  26  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  27  * GNU General Public License for more details.
  28  *
  29  * You should have received a copy of the GNU General Public License
  30  * along with this program; if not, write to the Free Software
  31  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  32  */
  33
  34 #ifndef __EXT4_COMMON__
  35 #define __EXT4_COMMON__
  36 #include <ext_common.h>
  37 #include <ext4fs.h>
  38 #include <malloc.h>
  39 #include <asm/errno.h>
  40 #if defined(CONFIG_CMD_EXT4_WRITE)
  41 #include "ext4_journal.h"
  42 #include "crc16.h"
  43 #endif
  44
  45 #define YES             1
  46 #define NO              0
  47 #define TRUE            1
  48 #define FALSE           0
  49 #define RECOVER 1
  50 #define SCAN            0
  51
  52 #define S_IFLNK         0120000         /* symbolic link */
  53 #define BLOCK_NO_ONE            1
  54 #define SUPERBLOCK_SECTOR       2
  55 #define SUPERBLOCK_SIZE 1024
  56 #define F_FILE                  1
  57
  58 static inline void *zalloc(size_t size)
  59 {
  60         void *p = memalign(ARCH_DMA_MINALIGN, size);
  61         memset(p, 0, size);
  62         return p;
  63 }
  64
  65 extern unsigned long part_offset;
  66 int ext4fs_read_inode(struct ext2_data *data, int ino,
  67                       struct ext2_inode *inode);
  68 int ext4fs_read_file(struct ext2fs_node *node, int pos,
  69                 unsigned int len, char *buf);
  70 int ext4fs_find_file(const char *path, struct ext2fs_node *rootnode,
  71                         struct ext2fs_node **foundnode, int expecttype);
  72 int ext4fs_iterate_dir(struct ext2fs_node *dir, char *name,
  73                         struct ext2fs_node **fnode, int *ftype);
  74
  75 #if defined(CONFIG_CMD_EXT4_WRITE)
  76 uint32_t ext4fs_div_roundup(uint32_t size, uint32_t n);
  77 int ext4fs_checksum_update(unsigned int i);
  78 int ext4fs_get_parent_inode_num(const char *dirname, char *dname, int flags);
  79 void ext4fs_update_parent_dentry(char *filename, int *p_ino, int file_type);
  80 long int ext4fs_get_new_blk_no(void);
  81 int ext4fs_get_new_inode_no(void);
  82 void ext4fs_reset_block_bmap(long int blockno, unsigned char *buffer,
  83                                         int index);
  84 int ext4fs_set_block_bmap(long int blockno, unsigned char *buffer, int index);
  85 int ext4fs_set_inode_bmap(int inode_no, unsigned char *buffer, int index);
  86 void ext4fs_reset_inode_bmap(int inode_no, unsigned char *buffer, int index);
  87 int ext4fs_iget(int inode_no, struct ext2_inode *inode);
  88 void ext4fs_allocate_blocks(struct ext2_inode *file_inode,
  89                                 unsigned int total_remaining_blocks,
  90                                 unsigned int *total_no_of_block);
  91 void put_ext4(uint64_t off, void *buf, uint32_t size);
  92 #endif
  93 #endif