TAPE_WMI_OPERATIONS structure (ntddtape.h)

The tape miniclass driver passes this structure to its TapeMiniWMIControl routine to indicate which WMI operation must be performed by the device.

Syntax

typedef struct _TAPE_WMI_OPERATIONS {
  ULONG Method;
  ULONG DataBufferSize;
  PVOID DataBuffer;
} TAPE_WMI_OPERATIONS, *PTAPE_WMI_OPERATIONS;

Members

Method

Indicates the operation to be performed by the tape device. The operations allowed are as follows:

TAPE_CHECK_FOR_DRIVE_PROBLEM

If the tape drive supports commands to return specific device errors, such as tape alerts, the minidriver's TapeMiniWMIControl routine should execute the TAPE_QUERY_DEVICE_ERROR_DATA method Otherwise, it should execute the TAPE_QUERY_IO_ERROR_DATA method.

TAPE_QUERY_DEVICE_ERROR_DATA

Returns specific device errors, such as tape alerts. Not all tape drives support this method.

TAPE_QUERY_IO_ERROR_DATA

Returns general I/O error data, such as read/write errors, based on the I/O error count. All tape drives support this method.

DataBufferSize

Indicates the size in bytes of the buffer in which the tape minidriver returns the results of the operation.

DataBuffer

Pointer to a buffer in which the tape minidriver returns the results of the operation. The first sizeof(ULONG) bytes of DataBuffer contain a value of type TAPE_DRIVE_PROBLEM_TYPE, followed by DataBufferSize - sizeof(ULONG) bytes of tape data.

Requirements

Requirement	Value
Header	ntddtape.h (include Ntddchgr.h, Minitape.h)

See also

TAPE_DRIVE_PROBLEM_TYPE

TapeMiniWMIControl