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);