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/*++
Copyright (c) Microsoft Corporation
Module Name:
log.c
Abstract:
Debug log Code for serial.
Environment:
kernel mode only
--*/
#include "precomp.h"
extern ULONG DebugLevel;
extern ULONG DebugFlag;
#if !defined(EVENT_TRACING)
VOID
SerialDbgPrintEx (
IN ULONG TraceEventsLevel,
IN ULONG TraceEventsFlag,
IN PCCHAR DebugMessage,
...
)
/*++
Routine Description:
Debug print for the sample driver.
Arguments:
TraceEventsLevel - print level between 0 and 3, with 3 the most verbose
Return Value:
None.
--*/
{
#if DBG
#define TEMP_BUFFER_SIZE 1024
va_list list;
CHAR debugMessageBuffer [TEMP_BUFFER_SIZE];
NTSTATUS status;
va_start(list, DebugMessage);
if (DebugMessage) {
//
// Using new safe string functions instead of _vsnprintf.
// This function takes care of NULL terminating if the message
// is longer than the buffer.
//
status = RtlStringCbVPrintfA( debugMessageBuffer,
sizeof(debugMessageBuffer),
DebugMessage,
list );
if(!NT_SUCCESS(status)) {
KdPrint((_DRIVER_NAME_": RtlStringCbVPrintfA failed %x\n", status));
return;
}
if (TraceEventsLevel < TRACE_LEVEL_INFORMATION ||
(TraceEventsLevel <= DebugLevel &&
((TraceEventsFlag & DebugFlag) == TraceEventsFlag))) {
KdPrint((debugMessageBuffer));
}
}
va_end(list);
return;
#else
UNREFERENCED_PARAMETER(TraceEventsLevel);
UNREFERENCED_PARAMETER(TraceEventsFlag);
UNREFERENCED_PARAMETER(DebugMessage);
#endif
}
#endif
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