SMART_RCV_DRIVE_DATA
Operation
Returns the ATA-2 identify data, the SMART thresholds, or the SMART attributes for the device. This IOCTL must be handled by drivers that support SMART.
Input
The buffer at Irp->AssociatedIrp.SystemBuffer contains a SENDCMDINPARAMS structure that describes the request being sent to the device. The irDriveRegs.bCommandReg member specifies ID_CMD when identify data is requested and SMART_CMD when SMART data is requested. If SMART data is requested, the irDriveRegs.bFeaturesReg member specifies either READ_ATTRIBUTES or READ_THRESHOLDS.
Parameters.DeviceIoControl.InputBufferLength specifies the size in bytes of the input buffer, which must be >= (sizeof(SENDCMDINPARAMS) ? 1).
Parameters.DeviceIoControl.OutputBufferLength specifies the size in bytes of the output buffer, which must be >= (sizeof(SENDCMDOUTPARAMS) ? 1 + 512).
Output
The driver returns the SENDCMDOUTPARAMS structure and a 512-byte buffer of drive data to the buffer at Irp->AssociatedIrp.SystemBuffer.
I/O Status Block
The driver sets the Information field to (sizeof(SENDCMDOUTPARAMS) ? 1 + 512) when it sets the Status field to STATUS_SUCCESS. Otherwise, the driver sets the Information field to zero and the Status field to possibly STATUS_INVALID_PARAMETER or STATUS_INSUFFICIENT_RESOURCES.
//
// NtDeviceIoControlFile IoControlCode values for this device.
//
// Warning: Remember that the low two bits of the code specify how the
// buffers are passed to the driver!
//
#define IOCTL_SCSI_MINIPORT CTL_CODE(IOCTL_SCSI_BASE, 0x0402, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
在NTDDK中对 IOCTL_SCSI_MINIPORT 的解释如下:
IOCTL_SCSI_MINIPORT
Operation
Sends a special control function to an HBA-specific miniport driver. Results vary, depending on the particular miniport driver to which this request is forwarded. If the caller specifies a nonzero Length, either the input or output buffer must be at least (sizeof(SRB_IO_CONTROL) + DataBufferLength)).
Input
The buffer at Irp->AssociatedIrp.SystemBuffer must contain an SRB_IO_CONTROL structure. Parameters.DeviceIoControl.InputBufferLength indicates the size in bytes of the buffer, which must be at least sizeof (SRB_IO_CONTROL), with additional storage for data if the Length field is nonzero.
Output
An updated SRB_IO_CONTROL structure is returned to the buffer at Irp->AssociatedIrp.SystemBuffer.
I/O Status Block
The Information field contains the number of bytes returned in the output buffer. The Status field indicates the results of the operation.
