Windows Dev Center

FileIo_ReadWrite class

This class is the event type class for file read and write events.

The following syntax is simplified from MOF code.

Syntax

[EventType{67, 68}, EventTypeName{"Read", "Write"}]class FileIo_ReadWrite : FileIo
{
  uint64 Offset;
  uint32 IrpPtr;
  uint32 TTID;
  uint32 FileObject;
  uint32 FileKey;
  uint32 IoSize;
  uint32 IoFlags;
};

Members

The FileIo_ReadWrite class has these types of members:

Properties

The FileIo_ReadWrite class has these properties.

FileKey
Data type: uint32
Access type: Read-only
Qualifiers: WmiDataId(5), Pointer

To determine the file name, match the value of this property to the FileObject property of a FileIo_Name event.

FileObject
Data type: uint32
Access type: Read-only
Qualifiers: WmiDataId(4), Pointer

Identifier that can be used for correlating operations to the same opened file object instance between file create and close events.

IoFlags
Data type: uint32
Access type: Read-only
Qualifiers: WmiDataId(7)

IO request packet flags specified for this operation.

IoSize
Data type: uint32
Access type: Read-only
Qualifiers: WmiDataId(6)

Number of bytes requested.

IrpPtr
Data type: uint32
Access type: Read-only
Qualifiers: WmiDataId(2), Pointer

IO request packet. This property identifies the IO activity.

Offset
Data type: uint64
Access type: Read-only
Qualifiers: WmiDataId(1)

Starting file offset for the requested operation.

TTID
Data type: uint32
Access type: Read-only
Qualifiers: WmiDataId(3), Pointer

Thread identifier of the thread that is performing the operation.

Requirements

Minimum supported client

Windows Vista [desktop apps only]

Minimum supported server

Windows Server 2008 [desktop apps only]

See also

FileIo

 

 

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