Add va function

src/driver/std_include.hpp

@@ -2,6 +2,7 @@
 
 #include <ntddk.h>
 #include <intrin.h>
+#include <Ntstrsafe.h>
 
 #pragma warning(push)
 #pragma warning(disable: 4201)

src/driver/string.cpp

@@ -11,4 +11,14 @@ namespace string
 		RtlInitUnicodeString(&unicode_string, string);
 		return unicode_string;
 	}
+
+	char* get_va_buffer()
+	{
+		constexpr auto va_buffer_count = 0x10;
+		static char buffers[va_buffer_count][VA_BUFFER_SIZE];
+		static volatile long current_buffer = 0;
+
+		const auto index = InterlockedIncrement(&current_buffer);
+		return buffers[index % va_buffer_count];
+	}
 }

src/driver/string.hpp

@@ -1,7 +1,20 @@
 #pragma once
+#include "type_traits.hpp"
+
+#define VA_BUFFER_SIZE 0x1000
 
 namespace string
 {
 	_IRQL_requires_max_(DISPATCH_LEVEL)
 	UNICODE_STRING get_unicode_string(const wchar_t* string);
+
+	char* get_va_buffer();
+
+	template<typename ...Args>
+	const char* va(const char* message, Args&&... args)
+	{
+		auto* buffer = get_va_buffer();
+		RtlStringCchPrintfA(buffer, VA_BUFFER_SIZE, message, std::forward<Args>(args)...);
+		return buffer;
+	}
 }