RxLogEventWithBufferDirect function

RxLogEventWithBufferDirect allocates an I/O error log structure, fills it in with information, and writes the entry to the I/O error log.


VOID RxLogEventWithBufferDirect(
  _In_ PVOID           DeviceObject,
  _In_ PUNICODE_STRING OriginatorId,
  _In_ ULONG           EventId,
  _In_ NTSTATUS        Status,
  _In_ PVOID           DataBuffer,
  _In_ USHORT          DataBufferLength,
  _In_ ULONG           LineNumber


DeviceObject [in]

A pointer to the RDBSS device object.

OriginatorId [in]

The string indicating the caller generating the error.

EventId [in]

The value indicating the I/O error log code which is different than an NTSTATUS value returned by a routine. The legal I/O error log code values are defined in the ntiolog.h header file included with the Microsoft Windows SDK and Visual Studio.

Status [in]

The value indicating the status code of a routine indicating a failure.

DataBuffer [in]

A pointer to a data buffer to be added to the I/O error log structure.

DataBufferLength [in]

The length of the data buffer to be added to the I/O error log structure.

LineNumber [in]

The line number in the source code file where this failure occurred.

Return value



RxLogEventDirect internally calls the RxLogEventWithAnnotation routine to create and write the log entry passing the Status and LineNumber parameters as the Annotations parameter to RxLogEventWithAnnotation.

The I/O error log entry size is limited to a length of 255 characters. So if the combined length of the EventId, DataBuffer, and Annotations parameters plus the size of the fixed part of the I/O error log entry exceeds 255, then no I/O error log entry will be created.

The RxLogEventWithAnnotation routine needs to allocate memory in order to create the I/O error log entry . Consequently, RxLogEventWithBufferDirect can silently fail if the memory allocation fails.


Target platform



Rxprocs.h (include Rxprocs.h or Rxstruc.h)



See also




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