io_operation
void *io_operation;
status_t (*io)(scsi_periph_device device, io_operation *operation,
ccb->io_operation = NULL;
io_operation *operation, uint64 offset, size_t originalNumBlocks,
request->io_operation = operation;
periph_io(scsi_periph_device_info *device, io_operation *operation,
status_t periph_io(scsi_periph_device_info* device, io_operation* operation,
IOCallback::WrapperFunction(void* data, io_operation* operation)
typedef status_t (*io_callback)(void* data, io_operation* operation);
io_operation* operation);