DriverMajorFunctionCall class

This class is the event type class for driver major function call events.

The following syntax is simplified from MOF code.

Syntax

[EventType{34}, EventTypeName{"DrvMjFnCall"}]
class DriverMajorFunctionCall : DiskIo
{
  uint32 MajorFunction;
  uint32 MinorFunction;
  uint32 RoutineAddr;
  uint32 FileObject;
  uint32 Irp;
  uint32 UniqMatchId;
};

Members

The DriverMajorFunctionCall class has these types of members:

• Properties

Properties

The DriverMajorFunctionCall class has these properties.

FileObject

Data type: uint32

Access type: Read-only

Qualifiers: WmiDataId(4), Pointer

Match the value of this pointer to the FileObject pointer value in a DiskIo_TypeGroup1 event to determine the type of I/O operation.

Irp

Data type: uint32

Access type: Read-only

Qualifiers: WmiDataId(5), Pointer

IO request packet.

MajorFunction

Data type: uint32

Access type: Read-only

Qualifiers: WmiDataId(1)

Code that identifies the major function being called.

MinorFunction

Data type: uint32

Access type: Read-only

Qualifiers: WmiDataId(2)

Code that identifies the minor function being called.

RoutineAddr

Data type: uint32

Access type: Read-only

Qualifiers: WmiDataId(3), Pointer

Address of the driver function being called.

UniqMatchId

Data type: uint32

Access type: Read-only

Qualifiers: WmiDataId(6)

Identifier that uniquely identifies request. Use this identifier to correlate with the other driver events, for example, the DriverCompleteRequest event.

Requirements

Requirement	Value
Minimum supported client	Windows Vista [desktop apps only]
Minimum supported server	Windows Server 2008 [desktop apps only]

See also

DiskIo