CHANGER_ELEMENT_STATUS_EX structure

Represents the status of the specified element.

Syntax

typedef struct _CHANGER_ELEMENT_STATUS_EX {
  CHANGER_ELEMENT Element;
  CHANGER_ELEMENT SrcElementAddress;
  DWORD           Flags;
  DWORD           ExceptionCode;
  BYTE            TargetId;
  BYTE            Lun;
  WORD            Reserved;
  BYTE            PrimaryVolumeID[MAX_VOLUME_ID_SIZE];
  BYTE            AlternateVolumeID[MAX_VOLUME_ID_SIZE];
  BYTE            VendorIdentification[VENDOR_ID_LENGTH];
  BYTE            ProductIdentification[PRODUCT_ID_LENGTH];
  BYTE            SerialNumber[SERIAL_NUMBER_LENGTH];
} CHANGER_ELEMENT_STATUS_EX, *PCHANGER_ELEMENT_STATUS_EX;

Members

Element

A CHANGER_ELEMENT structure that represents the element to which this structure refers.

SrcElementAddress

A CHANGER_ELEMENT structure that represents the element from which the media currently in this element was most recently moved.

This member is valid only if the Flags member includes ELEMENT_STATUS_SVALID.

Flags

The element status. This member can be one or more of the following values.

Value	Meaning
ELEMENT_STATUS_ACCESS 0x00000008	The changer's transport element can access the piece of media in this element. The media is not accessible in the following circumstances: (1) If the element type is ChangerSlot, the slot is not present in the changer (for example, the magazine containing the slot has been physically removed). (2) If the element type is ChangerDrive, the drive is broken or has been removed. (3) If the element type is ChangerIEPort, the changer's insert/eject port is extended.
ELEMENT_STATUS_AVOLTAG 0x20000000	Alternate volume information in the AlternateVolumeID member is valid.
ELEMENT_STATUS_EXCEPT 0x00000004	The element is in an abnormal state. Check the ExceptionCode member for more information.
ELEMENT_STATUS_EXENAB 0x00000010	The element supports export of media through the changer's insert/eject port.
ELEMENT_STATUS_FULL 0x00000001	The element contains a piece of media. Note that this value is valid only if the element type is ChangerDrive, ChangerSlot, or ChangerTransport. If the element type is ChangerIEPort, this value is valid only if the Features0 member of GET_CHANGER_PARAMETERS includes CHANGER_REPORT_IEPORT_STATE.
ELEMENT_STATUS_ID_VALID 0x00002000	The SCSI target ID in the TargetID member is valid. This value is valid only if the element type is ChangerDrive.
ELEMENT_STATUS_IMPEXP 0x00000002	The media in this element was placed there by an operator. This value is valid only if the element type is ChangerIEPort.
ELEMENT_STATUS_INENAB 0x00000020	The element supports import of media through the changer's insert/eject port.
ELEMENT_STATUS_INVERT 0x00400000	The media in the element was flipped. This value is valid only if ELEMENT_STATUS_SVALID is also included.
ELEMENT_STATUS_LUN_VALID 0x00001000	The logical unit number in the Lun member is valid. This value is valid only if the element type is ChangerDrive.
ELEMENT_STATUS_NOT_BUS 0x00008000	The drive at the address indicated by Lun and TargetID is on a different SCSI bus than the changer itself.
ELEMENT_STATUS_PRODUCT_DATA 0x00000040	The serial number in the SerialNumber member is valid.
ELEMENT_STATUS_PVOLTAG 0x10000000	Primary volume information in the PrimaryVolumeID member is valid.
ELEMENT_STATUS_SVALID 0x00800000	The SourceElement member and ELEMENT_STATUS_INVERT are both valid.

 

ExceptionCode

An exception code that indicates that the element is in an abnormal state. This member is valid only if the Flags member includes ELEMENT_STATUS_EXCEPT. This member can be one of the following values.

Value	Meaning
ERROR_DRIVE_NOT_INSTALLED 0x00000008	The drive at this element address is absent.
ERROR_INIT_STATUS_NEEDED 0x00000011	An Initialize Element Status command is needed.
ERROR_LABEL_QUESTIONABLE 0x00000002	The label might be invalid due to a unit attention condition.
ERROR_LABEL_UNREADABLE 0x00000001	The changer's barcode reader could not read the bar code label on the piece of media in this element, because the media is missing, damaged, improperly positioned, or upside down.
ERROR_SLOT_NOT_PRESENT 0x00000004	The slot at this element address is currently not installed in the changer. Each slot in a removable magazine is reported not present to indicate that the magazine has been removed.
ERROR_TRAY_MALFUNCTION 0x00000010	The drive at this element address has a tray that must be extended to load or remove media, and the tray is not extending as required.
ERROR_UNHANDLED_ERROR 0xFFFFFFFF	Unknown error condition.

 

TargetId

For a SCSI changer, specifies the SCSI target ID of the drive at this element address. This member is valid only if the ElementType member of the Element structure is ChangerDrive and the Flags member includes ELEMENT_STATUS_ID_VALID.

Lun

The SCSI logical unit number of the drive at this element address. This member is valid only if the ElementType member of the Element structure is ChangerDrive and the Flags member includes ELEMENT_STATUS_LUN_VALID.

Reserved

Reserved for future use. The value of this member must be zero.

PrimaryVolumeID

The primary volume identifier for the media. If the changer supports a barcode reader and the reader is installed (as indicated by CHANGER_BAR_CODE_SCANNER_INSTALLED in the Features0 member of GET_CHANGER_PARAMETERS), PrimaryVolumeID is the bar code of the media. If the changer does not support a barcode reader, PrimaryVolumeID is the value previously assigned to the media.

This member is valid only if the Flags member includes ELEMENT_STATUS_PVOLTAG.

If the volume identifier is missing or unreadable, this member is cleared.

AlternateVolumeID

An alternate volume identification for the media. This member is valid for two-sided media only, and pertains to the ID of the inverted side. It never represents a bar code.

This member is valid only if the Flags member includes ELEMENT_STATUS_AVOLTAG.

VendorIdentification

The vendor identifier.

ProductIdentification

The product identifier.

SerialNumber

The serial number for the drive.

Requirements

See also

CHANGER_ELEMENT

IOCTL_CHANGER_GET_ELEMENT_STATUS

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Build date: 4/16/2013