1 files changed, 50 insertions, 0 deletions
diff --git a/um/wrappers/nt_namespace/src/device.cpp b/um/wrappers/nt_namespace/src/device.cpp
new file mode 100644
index 0000000..4f9021b
--- /dev/null
+++ b/um/wrappers/nt_namespace/src/device.cpp
@@ -0,0 +1,50 @@
+// Copyright (c) 2015 Egor Tensin <Egor.Tensin@gmail.com>
+// This file is part of the "Windows 7 drivers" project.
+// For details, see https://github.com/egor-tensin/windows7-drivers.
+// Distributed under the MIT License.
+
+#include "nt_namespace/device.hpp"
+
+#include "service/all.hpp"
+
+#include <Windows.h>
+
+#include <string>
+#include <vector>
+
+namespace nt_namespace
+{
+    namespace
+    {
+        const auto device_path = "\\\\.\\nt_namespace";
+        const auto control_code = CTL_CODE(0x8000, 0x800, METHOD_BUFFERED, FILE_ANY_ACCESS);
+    }
+
+    Device::Device()
+        : service::Device(service::Device::open(device_path))
+    { }
+
+    std::wstring Device::convert_nt_path(const std::wstring& src)
+    {
+        const auto in_buf = src.c_str();
+        const auto in_buf_size = (src.size() + 1) * sizeof(wchar_t);
+
+        static_assert(sizeof(control_code) == sizeof(service::Device::Code), "CTL_CODE() must return DWORDs");
+
+        const auto nbreq = get_required_output_size(
+            static_cast<service::Device::Code>(control_code),
+            in_buf,
+            in_buf_size);
+
+        std::vector<unsigned char> output(nbreq);
+
+        send_control_code(
+            static_cast<service::Device::Code>(control_code),
+            in_buf,
+            in_buf_size,
+            output.data(),
+            nbreq);
+
+        return reinterpret_cast<wchar_t*>(output.data());
+    }
+}