dbgtrace.cpp File Reference

#include "fxobjectpch.hpp"
#include "strsafe.h"

Include dependency graph for dbgtrace.cpp:

Go to the source code of this file.

Functions
VOID __cdecl	DoTraceLevelMessage (__in PVOID FxDriverGlobals, __in ULONG DebugPrintLevel, __in ULONG DebugPrintFlag, __drv_formatString(FormatMessage) __in PCSTR DebugMessage,...)

Function Documentation

DoTraceLevelMessage()

VOID __cdecl DoTraceLevelMessage	(	__in PVOID	FxDriverGlobals,
		__in ULONG	DebugPrintLevel,
		__in ULONG	DebugPrintFlag,
		__drv_formatString(FormatMessage) __in PCSTR	DebugMessage,
			...
	)

Definition at line 34 of file dbgtrace.cpp.

 {
#if DBG
    UNREFERENCED_PARAMETER(FxDriverGlobals);
 
#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.
        //
#if FX_CORE_MODE==FX_CORE_KERNEL_MODE
        status = RtlStringCbVPrintfA( debugMessageBuffer,
                                      sizeof(debugMessageBuffer),
                                      DebugMessage,
                                      list );
#else
        HRESULT hr;
        hr = StringCbVPrintfA( debugMessageBuffer,
                                      sizeof(debugMessageBuffer),
                                      DebugMessage,
                                      list );
 
 
        if (HRESULT_FACILITY(hr) == FACILITY_WIN32)
        {
            status = WinErrorToNtStatus(HRESULT_CODE(hr));
        }
        else
        {
            status = SUCCEEDED(hr) ? STATUS_SUCCESS : STATUS_UNSUCCESSFUL;
        }
#endif
        if(!NT_SUCCESS(status)) {
 
#if FX_CORE_MODE==FX_CORE_KERNEL_MODE
            DbgPrint ("WDFTrace: RtlStringCbVPrintfA failed 0x%x\n", status);
#else
            OutputDebugString("WDFTrace: Unable to expand: ");
            OutputDebugString(DebugMessage);
#endif
            return;
        }
        if (DebugPrintLevel <= TRACE_LEVEL_ERROR ||
            (DebugPrintLevel <= DebugLevel &&
             ((DebugPrintFlag & DebugFlag) == DebugPrintFlag))) {
#if FX_CORE_MODE==FX_CORE_KERNEL_MODE
            DbgPrint("WDFTrace: %s\n", debugMessageBuffer);
#else
            OutputDebugString("WDFTrace: ");
            OutputDebugString(DebugMessage);
#endif
        }
    }
    va_end(list);
 
    return;
#else
    UNREFERENCED_PARAMETER(FxDriverGlobals);
    UNREFERENCED_PARAMETER(DebugPrintLevel);
    UNREFERENCED_PARAMETER(DebugPrintFlag);
    UNREFERENCED_PARAMETER(DebugMessage);
#endif
}