+ /* to control generic scsi devices */
+ int (*bdrv_ioctl)(BlockDriverState *bs, unsigned long int req, void *buf);
+ BlockDriverAIOCB *(*bdrv_aio_ioctl)(BlockDriverState *bs,
+ unsigned long int req, void *buf,
+ BlockDriverCompletionFunc *cb, void *opaque);
+
+ AIOPool aio_pool;
+
+ /* List of options for creating images, terminated by name == NULL */
+ QEMUOptionParameter *create_options;
+
+
+ /* Returns number of errors in image, -errno for internal errors */
+ int (*bdrv_check)(BlockDriverState* bs);
+