-int fat_size(const char *filename);
-long file_fat_read_at(const char *filename, unsigned long pos, void *buffer,
- unsigned long maxsize);
-long file_fat_read(const char *filename, void *buffer, unsigned long maxsize);
-const char *file_getfsname(int idx);
-int fat_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info);
-int fat_register_device(block_dev_desc_t *dev_desc, int part_no);
-
-int file_fat_write(const char *filename, void *buffer, unsigned long maxsize);
-int fat_read_file(const char *filename, void *buf, int offset, int len);
+int fat_size(const char *filename, loff_t *size);
+int file_fat_read_at(const char *filename, loff_t pos, void *buffer,
+ loff_t maxsize, loff_t *actread);
+int file_fat_read(const char *filename, void *buffer, int maxsize);
+int fat_set_blk_dev(struct blk_desc *rbdd, struct disk_partition *info);
+int fat_register_device(struct blk_desc *dev_desc, int part_no);
+
+int file_fat_write(const char *filename, void *buf, loff_t offset, loff_t len,
+ loff_t *actwrite);
+int fat_read_file(const char *filename, void *buf, loff_t offset, loff_t len,
+ loff_t *actread);
+int fat_opendir(const char *filename, struct fs_dir_stream **dirsp);
+int fat_readdir(struct fs_dir_stream *dirs, struct fs_dirent **dentp);
+void fat_closedir(struct fs_dir_stream *dirs);
+int fat_unlink(const char *filename);
+int fat_mkdir(const char *dirname);