// Actual implementation of logging API.
_Use_decl_annotations_ NTSTATUS LogpPrint(ULONG level,
const char *function_name,
const char *format, ...) {
auto status = STATUS_SUCCESS;
if (!LogpIsLogNeeded(level)) {
return status;
}
va_list args;
va_start(args, format);
char log_message[412];
status = RtlStringCchVPrintfA(log_message, RTL_NUMBER_OF(log_message), format,
args);
va_end(args);
if (!NT_SUCCESS(status)) {
NT_ASSERT(false);
return status;
}
if (log_message[0] == '\0') {
return STATUS_INVALID_PARAMETER;
}
const auto pure_level = level & 0xf0;
const auto attribute = level & 0x0f;
// A single entry of log should not exceed 512 bytes. See
// Reading and Filtering Debugging Messages in MSDN for details.
char message[512];
static_assert(RTL_NUMBER_OF(message) <= 512,
"One log message should not exceed 512 bytes.");
status = LogpMakePrefix(pure_level, function_name, log_message, message,
RTL_NUMBER_OF(message));
if (!NT_SUCCESS(status)) {
NT_ASSERT(false);
return status;
}
status = LogpPut(message, attribute);
NT_ASSERT(NT_SUCCESS(status));
return status;
}
// Actual implementation of logging API.
EXTERN_C NTSTATUS LogpPrint(_In_ ULONG Level, _In_ const char *FunctionName,
_In_ const char *Format, ...) {
auto status = STATUS_SUCCESS;
if (!LogpIsLogNeeded(Level)) {
return status;
}
va_list args;
va_start(args, Format);
char logMessage[412];
status =
RtlStringCchVPrintfA(logMessage, RTL_NUMBER_OF(logMessage), Format, args);
va_end(args);
if (!NT_SUCCESS(status)) {
return status;
}
if (logMessage[0] == '\0') {
return STATUS_INVALID_PARAMETER;
}
const auto pureLevel = Level & 0xf0;
const auto attribute = Level & 0x0f;
// A single entry of log should not exceed 512 bytes. See
// Reading and Filtering Debugging Messages in MSDN for details.
char message[512];
static_assert(RTL_NUMBER_OF(message) <= 512,
"One log message should not exceed 512 bytes.");
status = LogpMakePrefix(pureLevel, FunctionName, logMessage, message,
RTL_NUMBER_OF(message));
if (!NT_SUCCESS(status)) {
return status;
}
return LogpPut(message, attribute);
}
