7 files changed, 146 insertions, 0 deletions
diff --git a/um/libnt_path_converter/CMakeLists.txt b/um/libnt_path_converter/CMakeLists.txt
new file mode 100644
index 0000000..69f85d0
--- /dev/null
+++ b/um/libnt_path_converter/CMakeLists.txt
@@ -0,0 +1,10 @@
+project(libnt_path_converter)
+file(GLOB libnt_path_converter_sources "src/*.cpp")
+file(GLOB_RECURSE libnt_path_converter_headers "include/*.hpp")
+add_library(libnt_path_converter
+    ${libnt_path_converter_sources}
+    ${libnt_path_converter_headers})
+target_link_libraries(libnt_path_converter libservice)
+target_include_directories(libnt_path_converter PUBLIC include/)
+
+add_subdirectory(utils)
diff --git a/um/libnt_path_converter/README.md b/um/libnt_path_converter/README.md
new file mode 100644
index 0000000..74653dc
--- /dev/null
+++ b/um/libnt_path_converter/README.md
@@ -0,0 +1,31 @@
+nt_path_converter driver utilities
+==================================
+
+[nt_path_converter] driver usage examples.
+
+[nt_path_converter]: ../../km/src/special/nt_path_converter
+
+Usage
+-----
+
+### convert_nt_path.exe
+
+    Usage: convert_nt_path.exe [NT_PATH...]
+
+Converts a NT-style path to a DOS-style path.
+The NT namespace can be explored using the [WinObj] utility.
+For example:
+
+    > convert_nt_path.exe \Device\HarddiskVolume2\Windows
+    C:\Windows
+
+[WinObj]: https://technet.microsoft.com/en-us/library/bb896657.aspx
+
+See also
+--------
+
+* [Building the utilities]
+* [License]
+
+[Building the utilities]: ../README.md#building-the-utilities
+[License]: ../../README.md#license
diff --git a/um/libnt_path_converter/include/libnt_path_converter/all.hpp b/um/libnt_path_converter/include/libnt_path_converter/all.hpp
new file mode 100644
index 0000000..474b802
--- /dev/null
+++ b/um/libnt_path_converter/include/libnt_path_converter/all.hpp
@@ -0,0 +1,8 @@
+// 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.
+
+#pragma once
+
+#include "device.hpp"
diff --git a/um/libnt_path_converter/include/libnt_path_converter/device.hpp b/um/libnt_path_converter/include/libnt_path_converter/device.hpp
new file mode 100644
index 0000000..e1d75fb
--- /dev/null
+++ b/um/libnt_path_converter/include/libnt_path_converter/device.hpp
@@ -0,0 +1,21 @@
+// 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.
+
+#pragma once
+
+#include "libservice/all.hpp"
+
+#include <string>
+
+namespace libnt_path_converter
+{
+    class Device : libservice::Device
+    {
+    public:
+        Device();
+
+        std::wstring convert_nt_path(const std::wstring&);
+    };
+}
diff --git a/um/libnt_path_converter/src/device.cpp b/um/libnt_path_converter/src/device.cpp
new file mode 100644
index 0000000..90cd12f
--- /dev/null
+++ b/um/libnt_path_converter/src/device.cpp
@@ -0,0 +1,48 @@
+// 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 "libnt_path_converter/device.hpp"
+
+#include "libservice/all.hpp"
+
+#include <Windows.h>
+
+#include <string>
+#include <vector>
+
+namespace libnt_path_converter
+{
+    namespace
+    {
+        const char* const device_path = "\\\\.\\nt_path_converter";
+        const auto control_code = CTL_CODE(0x8000, 0x800, METHOD_BUFFERED, FILE_ANY_ACCESS);
+    }
+
+    Device::Device()
+        : libservice::Device(libservice::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);
+
+        const auto nbreq = get_required_output_size(
+            control_code,
+            in_buf,
+            in_buf_size);
+
+        std::vector<unsigned char> output(nbreq);
+
+        send_control_code(
+            control_code,
+            in_buf,
+            in_buf_size,
+            output.data(),
+            nbreq);
+
+        return reinterpret_cast<wchar_t*>(output.data());
+    }
+}
diff --git a/um/libnt_path_converter/utils/CMakeLists.txt b/um/libnt_path_converter/utils/CMakeLists.txt
new file mode 100644
index 0000000..9915995
--- /dev/null
+++ b/um/libnt_path_converter/utils/CMakeLists.txt
@@ -0,0 +1,2 @@
+add_executable(convert_nt_path convert_nt_path.cpp)
+target_link_libraries(convert_nt_path libnt_path_converter)
diff --git a/um/libnt_path_converter/utils/convert_nt_path.cpp b/um/libnt_path_converter/utils/convert_nt_path.cpp
new file mode 100644
index 0000000..0055db2
--- /dev/null
+++ b/um/libnt_path_converter/utils/convert_nt_path.cpp
@@ -0,0 +1,26 @@
+// 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 "libnt_path_converter/all.hpp"
+
+#include <exception>
+#include <iostream>
+
+int wmain(int argc, wchar_t* argv[])
+{
+    try
+    {
+        libnt_path_converter::Device dev;
+        for (int i = 1; i < argc; ++i)
+            std::wcout << dev.convert_nt_path(argv[i]) << L"\n";
+    }
+    catch (const std::exception& e)
+    {
+        std::wcerr << e.what() << "\n";
+        return 1;
+    }
+
+    return 0;
+}