update Changelog

- only allow ControlCodes with 0xC00 bits set in Function

Changelog.asciidoc

@@ -1,6 +1,29 @@
 = Changelog
 
 
+v1.5B2 (2019.3 B2)::
+
+Changes since v1.4:
+
+* [GEN] WinFsp file systems can now be used by WSLinux. Use the command `sudo mount -t drvfs x: /mnt/x` to mount.
+* [GEN] Extended attribute support has been added for all WinFsp API's: native, .NET, FUSE2 and FUSE3.
+* [FSD] Support for kernel-mode file systems on top of WinFsp has been added. See `FspFsextProvider`. This is in preparation for WinFuse - FUSE for Windows and WSLinux.
+* [FSD] FastIO support has been added. FastIO operations are enabled on cache-enabled file systems with the notable exception of `FastIoQueryOpen`, which allows opening files in kernel mode; this operation requires the file system to specify the `FSP_FSCTL_VOLUME_PARAMS::AllowOpenInKernelMode` flag.
+* [DLL] The `FspFileSystemStartDispatcher` default number of threads (`ThreadCount==0`) has been changed. See commit 3902874ac93fe40685d9761f46a96358ba24f24c for more.
+* [FUSE] FUSE has new `-o UserName=DOMAIN\USERNAME` and `-o GroupName=DOMAIN\GROUPNAME` options. These function like the `-o uid=UID` and `-o gid=GID` options, but accept Windows user and groups names.
+* [FUSE] FUSE has new `-o dothidden` option that is used to add the Windows hidden file attribute to files that start with a dot.
+* [FUSE] FUSE has new `-o create_file_umask=nnn` and `-o create_dir_umask=nnn` options that allow for more control than the `-o create_umask=nnn` option.
+* [.NET] The .NET API now supports asynchronous handling of `Read`, `Write` and `ReadDirectory`. (Thanks @dworkin.)
+* [.NET] The .NET API now supports fine-grained timeouts (`VolumeInfoTimeout`, `DirInfoTimeout`, etc).
+* [.NET] The .NET API has new method `FileSystemHost.MountEx` that adds a `ThreadCount` parameter.
+* [LAUNCH] The Launcher can now rewrite path arguments passed to file systems during launching using "Path Transformation Language". See commit a73f1b95592617ac7484e16c2e642573a4d65644 for more.
+* [FIX] Fixes for very large (> 4GiB) files. (Thanks @dworkin.)
+* [FIX] A fix for how FUSE handles the return value from `opendir`. (GitHub issue billziss-gh/sshfs-win#54)
+* [FIX] A fix for an invalid UID to SID mapping on domains with a lot of users. (Thanks @sganis.)
+* [FIX] A fix on the C++ layer. (Thanks @colatkinson.)
+* Other fixes and improvements.
+
+
 v1.5B1 (2019.3 B1)::
 
 Changes since v1.4:
@@ -11,6 +34,7 @@ Changes since v1.4:
 * A fix for an invalid UID to SID mapping on domains with a lot of users. (Thanks @sganis.)
 * A fix on the C++ layer. (Thanks @colatkinson.)
 
+
 v1.4.19049 (2019.2)::
 
 Changes since v1.3:

README.md

@@ -96,6 +96,7 @@ The project source code is organized as follows:
     * :file_folder: [src/dll/fuse3](src/dll/fuse3): Source code to the FUSE3 compatibility layer.
     * :file_folder: [src/dotnet](src/dotnet): Source code to the .NET layer.
     * :file_folder: [src/fsptool](src/fsptool): Source code to fsptool command line utility.
+    * :file_folder: [src/ku](src/ku): Source code that can be used from kernel or user mode.
     * :file_folder: [src/launcher](src/launcher): Source code to the launcher service and the launchctl utility.
     * :file_folder: [src/sys](src/sys): Source code to the WinFsp FSD.
 * :file_folder: [opt/cygfuse](opt/cygfuse): Source code to the FUSE for Cygwin package.
@@ -107,8 +108,12 @@ The project source code is organized as follows:
 
 In order to build WinFsp you will need the following:
 
-* Visual Studio 2015
+* Visual Studio 2015 - 2019
 * Windows Driver Kit (WDK) 10
+    - **NOTE**: When using the latest WDK (Windows 10.0.18362.1) with Visual Studio 2015 you may get an error about a missing task `ValidateNTTargetVersion`. The fix is to edit the file `\Program Files (x86)\Windows Kits\10\build\WindowsDriver.Common.targets` and modify the `UsingTask` line for `ValidateNTTargetVersion` as follows:
+        ```
+        <UsingTask TaskName="ValidateNTTargetVersion" AssemblyFile="$(WDKContentRoot)build\bin\Microsoft.DriverKit.Build.Tasks.16.0.dll"/>
+        ```
 * [Wix toolset](http://wixtoolset.org)
 
 To fully build WinFsp (including the installer) you must use `tools\build.bat`. By default it builds a Release build, but you can choose either the Debug or Release configuration by using the syntax:

build/VStudio/.gitignore

@@ -4,3 +4,6 @@ build
 *.vcproj.*
 *.vcxproj.user
 *.csproj.user
+*.VC.db
+*.VC.opendb
+.vs

build/VStudio/installer/CustomActions/CustomActions.vcxproj

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\version.properties" />
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
@@ -14,18 +15,18 @@
     <ProjectGuid>{95C223E6-B5F1-4FD0-9376-41CDBC824445}</ProjectGuid>
     <RootNamespace>CustomActions</RootNamespace>
     <Keyword>Win32Proj</Keyword>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>$(LatestTargetPlatformVersion)</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
     <WholeProgramOptimization>true</WholeProgramOptimization>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
@@ -68,7 +69,6 @@
       <AdditionalDependencies>msi.lib;dutil.lib;wcautil.lib;Version.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <AdditionalLibraryDirectories>$(WIX)sdk\VS2015\lib\x86;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <ModuleDefinitionFile>CustomActions.def</ModuleDefinitionFile>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Windows</SubSystem>
       <TargetMachine>MachineX86</TargetMachine>
       <IgnoreAllDefaultLibraries>false</IgnoreAllDefaultLibraries>
@@ -92,7 +92,6 @@
       <AdditionalDependencies>msi.lib;dutil.lib;wcautil.lib;Version.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <AdditionalLibraryDirectories>$(WIX)sdk\VS2015\lib\x86;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <ModuleDefinitionFile>CustomActions.def</ModuleDefinitionFile>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Windows</SubSystem>
       <OptimizeReferences>true</OptimizeReferences>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>

build/VStudio/testing/fsbench.vcxproj

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\version.properties" />
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
@@ -22,32 +23,32 @@
     <ProjectGuid>{C4E1E9E5-0959-488E-8C6A-C327CC81BEFB}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>fsbench</RootNamespace>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>$(LatestTargetPlatformVersion)</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -106,7 +107,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
@@ -122,7 +122,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
@@ -142,7 +141,6 @@
       <SubSystem>Console</SubSystem>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
@@ -162,7 +160,6 @@
       <SubSystem>Console</SubSystem>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>

build/VStudio/testing/fscrash.vcxproj

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\version.properties" />
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
@@ -22,32 +23,32 @@
     <ProjectGuid>{10757011-749D-4954-873B-AE38D8145472}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>fscrash</RootNamespace>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>$(LatestTargetPlatformVersion)</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -106,7 +107,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
@@ -122,7 +122,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
@@ -142,7 +141,6 @@
       <SubSystem>Console</SubSystem>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
@@ -162,7 +160,6 @@
       <SubSystem>Console</SubSystem>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>

build/VStudio/testing/memfs.vcxproj

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\version.properties" />
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
@@ -22,33 +23,33 @@
     <ProjectGuid>{AA7190E8-877F-4827-8CDD-E0D85F83C8C1}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>memfs</RootNamespace>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>$(LatestTargetPlatformVersion)</WindowsTargetPlatformVersion>
     <ProjectName>memfs</ProjectName>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -107,7 +108,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <StripPrivateSymbols>$(OutDir)$(TargetName).public.pdb</StripPrivateSymbols>
     </Link>
   </ItemDefinitionGroup>
@@ -124,7 +124,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <StripPrivateSymbols>$(OutDir)$(TargetName).public.pdb</StripPrivateSymbols>
     </Link>
   </ItemDefinitionGroup>
@@ -143,7 +142,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <StripPrivateSymbols>$(OutDir)$(TargetName).public.pdb</StripPrivateSymbols>
@@ -164,7 +162,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <StripPrivateSymbols>$(OutDir)$(TargetName).public.pdb</StripPrivateSymbols>

build/VStudio/testing/winfsp-tests.vcxproj

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\version.properties" />
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
@@ -22,32 +23,32 @@
     <ProjectGuid>{262DF8CC-E7A8-4460-A22C-683CBA322C32}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>winfsptests</RootNamespace>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>$(LatestTargetPlatformVersion)</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -106,7 +107,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <AdditionalDependencies>ntdll.lib;netapi32.lib;%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
@@ -123,7 +123,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <AdditionalDependencies>ntdll.lib;netapi32.lib;%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
@@ -142,7 +141,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <AdditionalDependencies>ntdll.lib;netapi32.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -163,7 +161,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <AdditionalDependencies>ntdll.lib;netapi32.lib;%(AdditionalDependencies)</AdditionalDependencies>
@@ -194,6 +191,7 @@
     <ClCompile Include="..\..\..\tst\winfsp-tests\hooks.c" />
     <ClCompile Include="..\..\..\tst\winfsp-tests\info-test.c" />
     <ClCompile Include="..\..\..\tst\winfsp-tests\launch-test.c" />
+    <ClCompile Include="..\..\..\tst\winfsp-tests\launcher-ptrans-test.c" />
     <ClCompile Include="..\..\..\tst\winfsp-tests\lock-test.c" />
     <ClCompile Include="..\..\..\tst\winfsp-tests\memfs-test.c" />
     <ClCompile Include="..\..\..\tst\winfsp-tests\mount-test.c" />
@@ -208,6 +206,7 @@
     <ClCompile Include="..\..\..\tst\winfsp-tests\timeout-test.c" />
     <ClCompile Include="..\..\..\tst\winfsp-tests\version-test.c" />
     <ClCompile Include="..\..\..\tst\winfsp-tests\winfsp-tests.c" />
+    <ClCompile Include="..\..\..\tst\winfsp-tests\wsl-test.c" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\..\ext\tlib\testsuite.h" />

build/VStudio/testing/winfsp-tests.vcxproj.filters

@@ -97,6 +97,12 @@
     <ClCompile Include="..\..\..\tst\winfsp-tests\ea-test.c">
       <Filter>Source</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\tst\winfsp-tests\wsl-test.c">
+      <Filter>Source</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\..\tst\winfsp-tests\launcher-ptrans-test.c">
+      <Filter>Source</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\..\ext\tlib\testsuite.h">

build/VStudio/tools/fsptool.vcxproj

@@ -23,32 +23,32 @@
     <ProjectGuid>{1E997BEC-1642-4A5C-B252-852DA094E11E}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>fsptool</RootNamespace>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>$(LatestTargetPlatformVersion)</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -108,7 +108,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
       <StripPrivateSymbols>$(OutDir)$(TargetName).public.pdb</StripPrivateSymbols>
     </Link>
@@ -127,7 +126,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
       <StripPrivateSymbols>$(OutDir)$(TargetName).public.pdb</StripPrivateSymbols>
     </Link>
@@ -149,7 +147,6 @@
       <SubSystem>Console</SubSystem>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
       <StripPrivateSymbols>$(OutDir)$(TargetName).public.pdb</StripPrivateSymbols>
     </Link>
@@ -171,7 +168,6 @@
       <SubSystem>Console</SubSystem>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
       <StripPrivateSymbols>$(OutDir)$(TargetName).public.pdb</StripPrivateSymbols>
     </Link>

build/VStudio/tools/launchctl.vcxproj

@@ -23,32 +23,32 @@
     <ProjectGuid>{264A5D09-126F-4760-A3F1-4B3B95C925AA}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>launchctl</RootNamespace>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>$(LatestTargetPlatformVersion)</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -110,7 +110,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
       <StripPrivateSymbols>$(OutDir)$(TargetName).public.pdb</StripPrivateSymbols>
     </Link>
@@ -131,7 +130,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
       <StripPrivateSymbols>$(OutDir)$(TargetName).public.pdb</StripPrivateSymbols>
     </Link>
@@ -155,7 +153,6 @@
       <SubSystem>Console</SubSystem>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
       <StripPrivateSymbols>$(OutDir)$(TargetName).public.pdb</StripPrivateSymbols>
     </Link>
@@ -179,7 +176,6 @@
       <SubSystem>Console</SubSystem>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
       <StripPrivateSymbols>$(OutDir)$(TargetName).public.pdb</StripPrivateSymbols>
     </Link>

build/VStudio/tools/launcher.vcxproj

@@ -23,32 +23,32 @@
     <ProjectGuid>{6CDF9411-B852-4EAC-822D-8F930675F17B}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>launcher</RootNamespace>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>$(LatestTargetPlatformVersion)</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -110,7 +110,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
       <AdditionalDependencies>%(AdditionalDependencies);rpcrt4.lib;userenv.lib</AdditionalDependencies>
       <StripPrivateSymbols>$(OutDir)$(TargetName).public.pdb</StripPrivateSymbols>
@@ -132,7 +131,6 @@
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
       <AdditionalDependencies>%(AdditionalDependencies);rpcrt4.lib;userenv.lib</AdditionalDependencies>
       <StripPrivateSymbols>$(OutDir)$(TargetName).public.pdb</StripPrivateSymbols>
@@ -157,7 +155,6 @@
       <SubSystem>Console</SubSystem>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
       <AdditionalDependencies>%(AdditionalDependencies);rpcrt4.lib;userenv.lib</AdditionalDependencies>
       <StripPrivateSymbols>$(OutDir)$(TargetName).public.pdb</StripPrivateSymbols>
@@ -182,7 +179,6 @@
       <SubSystem>Console</SubSystem>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
       <AdditionalDependencies>%(AdditionalDependencies);rpcrt4.lib;userenv.lib</AdditionalDependencies>
       <StripPrivateSymbols>$(OutDir)$(TargetName).public.pdb</StripPrivateSymbols>
@@ -190,6 +186,7 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="..\..\..\src\launcher\launcher.c" />
+    <ClCompile Include="..\..\..\src\launcher\ptrans.c" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\winfsp_dll.vcxproj">

build/VStudio/tools/launcher.vcxproj.filters

@@ -16,6 +16,9 @@
     <ClCompile Include="..\..\..\src\launcher\launcher.c">
       <Filter>Source</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\src\launcher\ptrans.c">
+      <Filter>Source</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\..\src\shared\minimal.h">

build/VStudio/version.properties

@@ -13,12 +13,12 @@
 
         <MyProductName>WinFsp</MyProductName>
         <MyDescription>Windows File System Proxy</MyDescription>
-        <MyCompanyName>Navimatics Corporation</MyCompanyName>
+        <MyCompanyName>Navimatics LLC</MyCompanyName>
         <MyCopyright>2015-$([System.DateTime]::Now.ToString(`yyyy`)) Bill Zissimopoulos</MyCopyright>
 
         <MyCanonicalVersion>1.5</MyCanonicalVersion>
 
-        <MyProductVersion>2019.3 B1</MyProductVersion>
+        <MyProductVersion>2019.3 B2</MyProductVersion>
         <MyProductStage>Beta</MyProductStage>
 
         <MyVersion>$(MyCanonicalVersion).$(MyBuildNumber)</MyVersion>
@@ -37,4 +37,17 @@
             <PreprocessorDefinitions>MyProductName=$(MyProductName);MyDescription=$(MyDescription);MyCompanyName=$(MyCompanyName);MyCopyright=$(MyCopyright);MyProductVersion=$(MyProductVersion);MyProductStage=$(MyProductStage);MyVersion=$(MyVersion);MyVersionWithCommas=$(MyVersionWithCommas);MyFullVersion=$(MyFullVersion)</PreprocessorDefinitions>
         </ResourceCompile>
     </ItemDefinitionGroup>
+    <ItemDefinitionGroup Condition="'$(DefaultPlatformToolset)'=='v140'">
+        <Link>
+            <GenerateDebugInformation>true</GenerateDebugInformation>
+        </Link>
+    </ItemDefinitionGroup>
+    <ItemDefinitionGroup Condition="'$(DefaultPlatformToolset)'!='v140'">
+        <Link>
+            <GenerateDebugInformation>DebugFull</GenerateDebugInformation>
+        </Link>
+    </ItemDefinitionGroup>
+    <PropertyGroup>
+        <SpectreMitigation>false</SpectreMitigation>
+    </PropertyGroup>
 </Project>

build/VStudio/winfsp_dll.vcxproj

@@ -35,6 +35,7 @@
     <ClInclude Include="..\..\src\dll\fuse3\library.h" />
     <ClInclude Include="..\..\src\dll\fuse\library.h" />
     <ClInclude Include="..\..\src\dll\library.h" />
+    <ClInclude Include="..\..\src\ku\library.h" />
     <ClInclude Include="..\..\src\shared\minimal.h" />
   </ItemGroup>
   <ItemGroup>
@@ -51,7 +52,6 @@
     <ClCompile Include="..\..\src\dll\fuse\fuse_opt.c" />
     <ClCompile Include="..\..\src\dll\launch.c" />
     <ClCompile Include="..\..\src\dll\np.c" />
-    <ClCompile Include="..\..\src\dll\posix.c" />
     <ClCompile Include="..\..\src\dll\security.c" />
     <ClCompile Include="..\..\src\dll\debug.c" />
     <ClCompile Include="..\..\src\dll\fsctl.c" />
@@ -63,6 +63,7 @@
     <ClCompile Include="..\..\src\dll\service.c" />
     <ClCompile Include="..\..\src\dll\util.c" />
     <ClCompile Include="..\..\src\dll\wksid.c" />
+    <ClCompile Include="..\..\src\ku\posix.c" />
   </ItemGroup>
   <ItemGroup>
     <CustomBuild Include="..\..\src\dll\fuse\fuse.pc.in">
@@ -126,33 +127,33 @@ copy /b $(OutDir)fuse3-$(PlatformTarget).pc + %(FullPath) $(OutDir)fuse3-$(Platf
     <ProjectGuid>{4A7C0B21-9E10-4C81-92DE-1493EFCF24EB}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>winfspdll</RootNamespace>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>$(LatestTargetPlatformVersion)</WindowsTargetPlatformVersion>
     <ProjectName>winfsp.dll</ProjectName>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -216,7 +217,6 @@ copy /b $(OutDir)fuse3-$(PlatformTarget).pc + %(FullPath) $(OutDir)fuse3-$(Platf
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>$(OutDir)$(TargetFileName).pdb</ProgramDatabaseFile>
       <GenerateMapFile>true</GenerateMapFile>
       <MapFileName>$(OutDir)$(TargetFileName).map</MapFileName>
@@ -244,7 +244,6 @@ copy /b $(OutDir)fuse3-$(PlatformTarget).pc + %(FullPath) $(OutDir)fuse3-$(Platf
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <ProgramDatabaseFile>$(OutDir)$(TargetFileName).pdb</ProgramDatabaseFile>
       <GenerateMapFile>true</GenerateMapFile>
       <MapFileName>$(OutDir)$(TargetFileName).map</MapFileName>
@@ -273,7 +272,6 @@ copy /b $(OutDir)fuse3-$(PlatformTarget).pc + %(FullPath) $(OutDir)fuse3-$(Platf
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <ProgramDatabaseFile>$(OutDir)$(TargetFileName).pdb</ProgramDatabaseFile>
@@ -304,7 +302,6 @@ copy /b $(OutDir)fuse3-$(PlatformTarget).pc + %(FullPath) $(OutDir)fuse3-$(Platf
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <ProgramDatabaseFile>$(OutDir)$(TargetFileName).pdb</ProgramDatabaseFile>

build/VStudio/winfsp_dll.vcxproj.filters

@@ -27,6 +27,9 @@
     <Filter Include="Source\fuse3">
       <UniqueIdentifier>{96091a7b-3923-4a74-9491-3ee230c688f9}</UniqueIdentifier>
     </Filter>
+    <Filter Include="Source\ku">
+      <UniqueIdentifier>{613cce77-2428-4f9a-9187-f37e009253c1}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\inc\winfsp\fsctl.h">
@@ -77,6 +80,9 @@
     <ClInclude Include="..\..\src\dll\fuse3\library.h">
       <Filter>Source\fuse3</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\ku\library.h">
+      <Filter>Source\ku</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\dll\library.c">
@@ -124,9 +130,6 @@
     <ClCompile Include="..\..\src\dll\fuse\fuse_main.c">
       <Filter>Source\fuse</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\src\dll\posix.c">
-      <Filter>Source</Filter>
-    </ClCompile>
     <ClCompile Include="..\..\src\dll\fuse\fuse_intf.c">
       <Filter>Source\fuse</Filter>
     </ClCompile>
@@ -154,6 +157,9 @@
     <ClCompile Include="..\..\src\dll\fuse3\fuse3_compat.c">
       <Filter>Source\fuse3</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\ku\posix.c">
+      <Filter>Source\ku</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\..\src\dll\library.def">

build/VStudio/winfsp_sys.vcxproj

@@ -101,7 +101,7 @@
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
-      <AdditionalIncludeDirectories>..\..\src;..\..\inc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\src;..\..\opt\fsext\inc;..\..\inc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions> _X86_=1;i386=1;STD_CALL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <Link>
@@ -114,7 +114,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
-      <AdditionalIncludeDirectories>..\..\src;..\..\inc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\src;..\..\opt\fsext\inc;..\..\inc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions> _X86_=1;i386=1;STD_CALL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <Link>
@@ -127,7 +127,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
-      <AdditionalIncludeDirectories>..\..\src;..\..\inc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\src;..\..\opt\fsext\inc;..\..\inc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions> _WIN64;_AMD64_;AMD64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <Link>
@@ -140,7 +140,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
-      <AdditionalIncludeDirectories>..\..\src;..\..\inc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..\src;..\..\opt\fsext\inc;..\..\inc;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions> _WIN64;_AMD64_;AMD64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <Link>
@@ -155,6 +155,7 @@
     <FilesToPackage Include="$(TargetPath)" />
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="..\..\src\ku\posix.c" />
     <ClCompile Include="..\..\src\sys\cleanup.c" />
     <ClCompile Include="..\..\src\sys\close.c" />
     <ClCompile Include="..\..\src\sys\create.c" />
@@ -169,6 +170,7 @@
     <ClCompile Include="..\..\src\sys\fileinfo.c" />
     <ClCompile Include="..\..\src\sys\flush.c" />
     <ClCompile Include="..\..\src\sys\fsctl.c" />
+    <ClCompile Include="..\..\src\sys\fsext.c" />
     <ClCompile Include="..\..\src\sys\iop.c" />
     <ClCompile Include="..\..\src\sys\ioq.c" />
     <ClCompile Include="..\..\src\sys\lockctl.c" />
@@ -188,6 +190,8 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\inc\winfsp\fsctl.h" />
+    <ClInclude Include="..\..\opt\fsext\inc\winfsp\fsext.h" />
+    <ClInclude Include="..\..\src\ku\library.h" />
     <ClInclude Include="..\..\src\sys\driver.h" />
   </ItemGroup>
   <ItemGroup>
@@ -212,7 +216,7 @@ for /f "delims=" %%l in (%(FullPath)) do (
     echo !line! &gt;&gt;$(OutDir)driver-$(PlatformTarget).inf
 )
 
-stampinf -v $(MyVersion) -f $(OutDir)driver-$(PlatformTarget).inf</Command>
+stampinf -d * -v $(MyVersion) -f $(OutDir)driver-$(PlatformTarget).inf</Command>
       <LinkObjects Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</LinkObjects>
       <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">set DriverFile=$(TargetFileName)
 set Provider="$(MyCompanyName)"
@@ -225,7 +229,7 @@ for /f "delims=" %%l in (%(FullPath)) do (
     echo !line! &gt;&gt;$(OutDir)driver-$(PlatformTarget).inf
 )
 
-stampinf -v $(MyVersion) -f $(OutDir)driver-$(PlatformTarget).inf</Command>
+stampinf -d * -v $(MyVersion) -f $(OutDir)driver-$(PlatformTarget).inf</Command>
       <LinkObjects Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</LinkObjects>
       <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">set DriverFile=$(TargetFileName)
 set Provider="$(MyCompanyName)"
@@ -238,7 +242,7 @@ for /f "delims=" %%l in (%(FullPath)) do (
     echo !line! &gt;&gt;$(OutDir)driver-$(PlatformTarget).inf
 )
 
-stampinf -v $(MyVersion) -f $(OutDir)driver-$(PlatformTarget).inf</Command>
+stampinf -d * -v $(MyVersion) -f $(OutDir)driver-$(PlatformTarget).inf</Command>
       <LinkObjects Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</LinkObjects>
       <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">set DriverFile=$(TargetFileName)
 set Provider="$(MyCompanyName)"
@@ -251,7 +255,7 @@ for /f "delims=" %%l in (%(FullPath)) do (
     echo !line! &gt;&gt;$(OutDir)driver-$(PlatformTarget).inf
 )
 
-stampinf -v $(MyVersion) -f $(OutDir)driver-$(PlatformTarget).inf</Command>
+stampinf -d * -v $(MyVersion) -f $(OutDir)driver-$(PlatformTarget).inf</Command>
       <LinkObjects Condition="'$(Configuration)|$(Platform)'=='Release|x64'">false</LinkObjects>
       <Message Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Writing driver-$(PlatformTarget).inf</Message>
       <Outputs Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(OutDir)driver-$(PlatformTarget).inf</Outputs>

build/VStudio/winfsp_sys.vcxproj.filters

@@ -12,6 +12,9 @@
     <Filter Include="Include\winfsp">
       <UniqueIdentifier>{904f0df1-2fb8-4f84-aa46-fa929488c39a}</UniqueIdentifier>
     </Filter>
+    <Filter Include="Source\ku">
+      <UniqueIdentifier>{235076b8-290c-4dec-b005-71d9b8e8cba7}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\sys\driver.c">
@@ -104,6 +107,12 @@
     <ClCompile Include="..\..\src\sys\mup.c">
       <Filter>Source</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\sys\fsext.c">
+      <Filter>Source</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\src\ku\posix.c">
+      <Filter>Source\ku</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\src\sys\driver.h">
@@ -112,6 +121,12 @@
     <ClInclude Include="..\..\inc\winfsp\fsctl.h">
       <Filter>Include\winfsp</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\opt\fsext\inc\winfsp\fsext.h">
+      <Filter>Include\winfsp</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\ku\library.h">
+      <Filter>Source\ku</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="..\..\src\sys\version.rc">

inc/winfsp/fsctl.h

@@ -65,6 +65,10 @@ extern const __declspec(selectany) GUID FspFsvrtDeviceClassGuid =
 #define FSP_FSCTL_STOP                  \
     CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 0x800 + 'S', METHOD_BUFFERED, FILE_ANY_ACCESS)
 
+/* fsctl internal device codes (usable only in-kernel) */
+#define FSP_FSCTL_TRANSACT_INTERNAL     \
+    CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 0x800 + 'I', METHOD_NEITHER, FILE_ANY_ACCESS)
+
 #define FSP_FSCTL_VOLUME_PARAMS_PREFIX  "\\VolumeParams="
 
 #define FSP_FSCTL_VOLUME_NAME_SIZE      (64 * sizeof(WCHAR))
@@ -83,7 +87,7 @@ FSP_FSCTL_STATIC_ASSERT(FSP_FSCTL_VOLUME_NAME_SIZEMAX <= 260 * sizeof(WCHAR),
 #define FSP_FSCTL_TRANSACT_BATCH_BUFFER_SIZEMIN (64 * 1024)
 #define FSP_FSCTL_TRANSACT_BUFFER_SIZEMIN       FSP_FSCTL_TRANSACT_REQ_SIZEMAX
 
-#define FSP_FSCTL_TRANSACT_REQ_TOKEN_HANDLE(T)  ((HANDLE)((T) & 0xffffffff))
+#define FSP_FSCTL_TRANSACT_REQ_TOKEN_HANDLE(T)  ((HANDLE)((UINT_PTR)((T) & 0xffffffff)))
 #define FSP_FSCTL_TRANSACT_REQ_TOKEN_PID(T)     ((UINT32)(((T) >> 32) & 0xffffffff))
 
 #define FSP_FSCTL_DEVICECONTROL_SIZEMAX (4 * 1024)  /* must be < FSP_FSCTL_TRANSACT_{REQ,RSP}_SIZEMAX */
@@ -121,7 +125,7 @@ enum
 {
     FspFsctlTransactTimeoutMinimum = 1000,
     FspFsctlTransactTimeoutMaximum = 10000,
-    FspFsctlTransactTimeoutDefault = 1000,
+    FspFsctlTransactTimeoutDefault = 1000,  /* DEPRECATED: default is unspecified */
     FspFsctlIrpTimeoutMinimum = 60000,
     FspFsctlIrpTimeoutMaximum = 600000,
     FspFsctlIrpTimeoutDefault = 300000,
@@ -139,7 +143,7 @@ enum
     UINT64 VolumeCreationTime;\
     UINT32 VolumeSerialNumber;\
     /* I/O timeouts, capacity, etc. */\
-    UINT32 TransactTimeout;             /* FSP_FSCTL_TRANSACT timeout (millis; 1 sec - 10 sec) */\
+    UINT32 TransactTimeout;             /* DEPRECATED: (millis; 1 sec - 10 sec) */\
     UINT32 IrpTimeout;                  /* pending IRP timeout (millis; 1 min - 10 min) */\
     UINT32 IrpCapacity;                 /* maximum number of pending IRP's (100 - 1000)*/\
     UINT32 FileInfoTimeout;             /* FileInfo/Security/VolumeInfo timeout (millis) */\
@@ -168,7 +172,8 @@ enum
     /* additional kernel-mode flags */\
     UINT32 AllowOpenInKernelMode:1;         /* allow kernel mode to open files when possible */\
     UINT32 CasePreservedExtendedAttributes:1;   /* preserve case of EA (default is UPPERCASE) */\
-    UINT32 KmReservedFlags:6;\
+    UINT32 WslFeatures:1;                   /* support features required for WSLinux */\
+    UINT32 KmReservedFlags:5;\
     WCHAR Prefix[FSP_FSCTL_VOLUME_PREFIX_SIZE / sizeof(WCHAR)]; /* UNC prefix (\Server\Share) */\
     WCHAR FileSystemName[FSP_FSCTL_VOLUME_FSNAME_SIZE / sizeof(WCHAR)];
 #define FSP_FSCTL_VOLUME_PARAMS_V1_FIELD_DEFN\
@@ -184,7 +189,8 @@ enum
     UINT32 SecurityTimeout;             /* security info timeout (millis); overrides FileInfoTimeout */\
     UINT32 StreamInfoTimeout;           /* stream info timeout (millis); overrides FileInfoTimeout */\
     UINT32 EaTimeout;                   /* EA timeout (millis); overrides FileInfoTimeout */\
-    UINT32 Reserved32[2];\
+    UINT32 FsextControlCode;\
+    UINT32 Reserved32[1];\
     UINT64 Reserved64[2];
 typedef struct
 {
@@ -277,7 +283,7 @@ typedef struct
             UINT32 DesiredAccess;       /* FILE_{READ_DATA,WRITE_DATA,etc.} */
             UINT32 GrantedAccess;       /* FILE_{READ_DATA,WRITE_DATA,etc.} */
             UINT32 ShareAccess;         /* FILE_SHARE_{READ,WRITE,DELETE} */
-            FSP_FSCTL_TRANSACT_BUF Ea;  /* extended attributes buffer */
+            FSP_FSCTL_TRANSACT_BUF Ea;  /* extended attributes or reparse point buffer */
             UINT32 UserMode:1;          /* request originated in user mode */
             UINT32 HasTraversePrivilege:1;  /* requestor has TOKEN_HAS_TRAVERSE_PRIVILEGE */
             UINT32 HasBackupPrivilege:1;    /* requestor has TOKEN_HAS_BACKUP_PRIVILEGE */
@@ -286,6 +292,7 @@ typedef struct
             UINT32 CaseSensitive:1;         /* FileName comparisons should be case-sensitive */
             UINT32 HasTrailingBackslash:1;  /* FileName had trailing backslash */
             UINT32 AcceptsSecurityDescriptor:1;
+            UINT32 EaIsReparsePoint:1;      /* Ea buffer is reparse point */
             UINT32 ReservedFlags:24;
             UINT16 NamedStream;             /* request targets named stream; colon offset in FileName */
         } Create;
@@ -586,7 +593,7 @@ static inline FSP_FSCTL_TRANSACT_RSP *FspFsctlTransactConsumeResponse(
     return NextResponse <= ResponseBufEnd ? (FSP_FSCTL_TRANSACT_RSP *)NextResponse : 0;
 }
 
-#if !defined(WINFSP_SYS_INTERNAL)
+#if !defined(_KERNEL_MODE)
 FSP_API NTSTATUS FspFsctlCreateVolume(PWSTR DevicePath,
     const FSP_FSCTL_VOLUME_PARAMS *VolumeParams,
     PWCHAR VolumeNameBuf, SIZE_T VolumeNameSize,

inc/winfsp/winfsp.h

@@ -912,7 +912,8 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
     /**
      * Create new file or directory.
      *
-     * This function works like Create, except that it also accepts EA (extended attributes).
+     * This function works like Create, except that it also accepts an extra buffer that
+     * may contain extended attributes or a reparse point.
      *
      * NOTE: If both Create and CreateEx are defined, CreateEx takes precedence.
      *
@@ -941,10 +942,12 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
      *     Windows GetSecurityDescriptorLength API. Will be NULL for named streams.
      * @param AllocationSize
      *     Allocation size for the newly created file.
-     * @param Ea
-     *     Extended attributes buffer.
-     * @param EaLength
-     *     Extended attributes buffer length.
+     * @param ExtraBuffer
+     *     Extended attributes or reparse point buffer.
+     * @param ExtraLength
+     *     Extended attributes or reparse point buffer length.
+     * @param ExtraBufferIsReparsePoint
+     *     FALSE: extra buffer is extended attributes; TRUE: extra buffer is reparse point.
      * @param PFileContext [out]
      *     Pointer that will receive the file context on successful return from this call.
      * @param FileInfo [out]
@@ -956,7 +959,7 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE
     NTSTATUS (*CreateEx)(FSP_FILE_SYSTEM *FileSystem,
         PWSTR FileName, UINT32 CreateOptions, UINT32 GrantedAccess,
         UINT32 FileAttributes, PSECURITY_DESCRIPTOR SecurityDescriptor, UINT64 AllocationSize,
-        PFILE_FULL_EA_INFORMATION Ea, ULONG EaLength,
+        PVOID ExtraBuffer, ULONG ExtraLength, BOOLEAN ExtraBufferIsReparsePoint,
         PVOID *PFileContext, FSP_FSCTL_FILE_INFO *FileInfo);
     /**
      * Overwrite a file.

opt/fsext/inc/winfsp/fsext.h

@@ -0,0 +1,93 @@
+/**
+ * @file winfsp/fsext.h
+ *
+ * @copyright 2015-2019 Bill Zissimopoulos
+ */
+/*
+ * This file is part of WinFsp.
+ *
+ * You can redistribute it and/or modify it under the terms of the GNU
+ * General Public License version 3 as published by the Free Software
+ * Foundation.
+ *
+ * Licensees holding a valid commercial license may use this software
+ * in accordance with the commercial license agreement provided in
+ * conjunction with the software.  The terms and conditions of any such
+ * commercial license agreement shall govern, supersede, and render
+ * ineffective any application of the GPLv3 license to this software,
+ * notwithstanding of any reference thereto in the software or
+ * associated repository.
+ */
+
+#ifndef WINFSP_FSEXT_H_INCLUDED
+#define WINFSP_FSEXT_H_INCLUDED
+
+#if !defined(_KERNEL_MODE)
+#error This file can only be included when compiling for kernel mode.
+#endif
+
+#include <winfsp/fsctl.h>
+
+#if defined(WINFSP_SYS_INTERNAL)
+#define FSP_DDI                         __declspec(dllexport)
+#else
+#define FSP_DDI                         __declspec(dllimport)
+#endif
+#if !defined(FSP_DDI_DEF)
+#define FSP_DDI_DEF(RetType, Name, ...) FSP_DDI RetType NTAPI Name ( __VA_ARGS__ );
+#endif
+
+typedef struct
+{
+    UINT32 Version;
+    /* in */
+    UINT32 DeviceTransactCode;
+    UINT32 DeviceExtensionSize;
+    NTSTATUS (*DeviceInit)(PDEVICE_OBJECT DeviceObject, FSP_FSCTL_VOLUME_PARAMS *VolumeParams);
+    VOID (*DeviceFini)(PDEVICE_OBJECT DeviceObject);
+    VOID (*DeviceExpirationRoutine)(PDEVICE_OBJECT DeviceObject, UINT64 ExpirationTime);
+    NTSTATUS (*DeviceTransact)(PDEVICE_OBJECT DeviceObject, PIRP Irp);
+    /* out */
+    UINT32 DeviceExtensionOffset;
+} FSP_FSEXT_PROVIDER;
+
+FSP_DDI_DEF(NTSTATUS, FspFsextProviderRegister,
+    FSP_FSEXT_PROVIDER *Provider)
+
+FSP_DDI_DEF(NTSTATUS, FspPosixMapUidToSid,
+    UINT32 Uid,
+    PSID *PSid)
+FSP_DDI_DEF(NTSTATUS, FspPosixMapSidToUid,
+    PSID Sid,
+    PUINT32 PUid)
+FSP_DDI_DEF(VOID, FspDeleteSid,
+    PSID Sid,
+    NTSTATUS (*CreateFunc)())
+FSP_DDI_DEF(NTSTATUS, FspPosixMapPermissionsToSecurityDescriptor,
+    UINT32 Uid,
+    UINT32 Gid,
+    UINT32 Mode,
+    PSECURITY_DESCRIPTOR *PSecurityDescriptor)
+FSP_DDI_DEF(NTSTATUS, FspPosixMapSecurityDescriptorToPermissions,
+    PSECURITY_DESCRIPTOR SecurityDescriptor,
+    PUINT32 PUid,
+    PUINT32 PGid,
+    PUINT32 PMode)
+FSP_DDI_DEF(NTSTATUS, FspPosixMapWindowsToPosixPathEx,
+    PWSTR WindowsPath,
+    char **PPosixPath,
+    BOOLEAN Translate)
+FSP_DDI_DEF(NTSTATUS, FspPosixMapPosixToWindowsPathEx,
+    const char *PosixPath,
+    PWSTR *PWindowsPath,
+    BOOLEAN Translate)
+FSP_DDI_DEF(VOID, FspPosixDeletePath,
+    void *Path)
+FSP_DDI_DEF(VOID, FspPosixEncodeWindowsPath,
+    PWSTR WindowsPath,
+    ULONG Size)
+FSP_DDI_DEF(VOID, FspPosixDecodeWindowsPath,
+    PWSTR WindowsPath,
+    ULONG Size)
+
+#endif

opt/fsext/lib/winfsp.impdef

@@ -0,0 +1,6 @@
+// tools\impdef.bat lib\winfsp.impdef lib\winfsp-x64.lib
+// tools\impdef.bat lib\winfsp.impdef lib\winfsp-x86.lib
+
+#define FSP_DDI_DEF(RetType, Name, ...) __declspec(dllexport) RetType NTAPI Name ( __VA_ARGS__ ) {}
+#include <ntifs.h>
+#include <winfsp/fsext.h>

src/dll/fs.c

@@ -24,6 +24,8 @@
 enum
 {
     FspFileSystemDispatcherThreadCountMin = 2,
+    FspFileSystemDispatcherDefaultThreadCountMin = 4,
+    FspFileSystemDispatcherDefaultThreadCountMax = 16,
 };
 
 static FSP_FILE_SYSTEM_INTERFACE FspFileSystemNullInterface;
@@ -636,6 +638,11 @@ FSP_API NTSTATUS FspFileSystemStartDispatcher(FSP_FILE_SYSTEM *FileSystem, ULONG
 
         for (ThreadCount = 0; 0 != ProcessMask; ProcessMask >>= 1)
             ThreadCount += ProcessMask & 1;
+
+        if (ThreadCount < FspFileSystemDispatcherDefaultThreadCountMin)
+            ThreadCount = FspFileSystemDispatcherDefaultThreadCountMin;
+        else if (ThreadCount > FspFileSystemDispatcherDefaultThreadCountMax)
+            ThreadCount = FspFileSystemDispatcherDefaultThreadCountMax;
     }
 
     if (ThreadCount < FspFileSystemDispatcherThreadCountMin)

src/dll/fsop.c

@@ -443,6 +443,7 @@ static NTSTATUS FspFileSystemOpCreate_FileCreate(FSP_FILE_SYSTEM *FileSystem,
             0 != Request->Req.Create.Ea.Size ?
                 (PVOID)(Request->Buffer + Request->Req.Create.Ea.Offset) : 0,
             Request->Req.Create.Ea.Size,
+            Request->Req.Create.EaIsReparsePoint,
             AddrOfFileContext(FullContext), &OpenFileInfo.FileInfo);
     else
         Result = FileSystem->Interface->Create(FileSystem,
@@ -590,6 +591,7 @@ static NTSTATUS FspFileSystemOpCreate_FileOpenIf(FSP_FILE_SYSTEM *FileSystem,
                 0 != Request->Req.Create.Ea.Size ?
                     (PVOID)(Request->Buffer + Request->Req.Create.Ea.Offset) : 0,
                 Request->Req.Create.Ea.Size,
+                Request->Req.Create.EaIsReparsePoint,
                 AddrOfFileContext(FullContext), &OpenFileInfo.FileInfo);
         else
             Result = FileSystem->Interface->Create(FileSystem,
@@ -724,6 +726,7 @@ static NTSTATUS FspFileSystemOpCreate_FileOverwriteIf(FSP_FILE_SYSTEM *FileSyste
                 0 != Request->Req.Create.Ea.Size ?
                     (PVOID)(Request->Buffer + Request->Req.Create.Ea.Offset) : 0,
                 Request->Req.Create.Ea.Size,
+                Request->Req.Create.EaIsReparsePoint,
                 AddrOfFileContext(FullContext), &OpenFileInfo.FileInfo);
         else
             Result = FileSystem->Interface->Create(FileSystem,

src/dll/fuse/fuse.c

@@ -54,6 +54,10 @@ static struct fuse_opt fsp_fuse_core_opts[] =
     FSP_FUSE_CORE_OPT("umask=%o", umask, 0),
     FSP_FUSE_CORE_OPT("create_umask=", set_create_umask, 1),
     FSP_FUSE_CORE_OPT("create_umask=%o", create_umask, 0),
+    FSP_FUSE_CORE_OPT("create_file_umask=", set_create_file_umask, 1),
+    FSP_FUSE_CORE_OPT("create_file_umask=%o", create_file_umask, 0),
+    FSP_FUSE_CORE_OPT("create_dir_umask=", set_create_dir_umask, 1),
+    FSP_FUSE_CORE_OPT("create_dir_umask=%o", create_dir_umask, 0),
     FSP_FUSE_CORE_OPT("uid=", set_uid, 1),
     FSP_FUSE_CORE_OPT("uid=%d", uid, 0),
     FSP_FUSE_CORE_OPT("gid=", set_gid, 1),
@@ -71,6 +75,9 @@ static struct fuse_opt fsp_fuse_core_opts[] =
     FSP_FUSE_CORE_OPT("rellinks", rellinks, 1),
     FSP_FUSE_CORE_OPT("norellinks", rellinks, 0),
 
+    FSP_FUSE_CORE_OPT("dothidden", dothidden, 1),
+    FSP_FUSE_CORE_OPT("nodothidden", dothidden, 0),
+
     FUSE_OPT_KEY("fstypename=", 'F'),
     FUSE_OPT_KEY("volname=", 'v'),
 
@@ -96,6 +103,15 @@ static struct fuse_opt fsp_fuse_core_opts[] =
     FUSE_OPT_KEY("FileSystemName=", 'F'),
     FUSE_OPT_KEY("--FileSystemName=", 'F'),
 
+    FSP_FUSE_CORE_OPT("UserName=", set_uid, 1),
+    FUSE_OPT_KEY("UserName=", 'u'),
+    FSP_FUSE_CORE_OPT("--UserName=", set_uid, 1),
+    FUSE_OPT_KEY("--UserName=", 'u'),
+    FSP_FUSE_CORE_OPT("GroupName=", set_gid, 1),
+    FUSE_OPT_KEY("GroupName=", 'g'),
+    FSP_FUSE_CORE_OPT("--GroupName=", set_gid, 1),
+    FUSE_OPT_KEY("--GroupName=", 'g'),
+
     FUSE_OPT_END,
 };
 
@@ -226,6 +242,43 @@ FSP_FUSE_API int fsp_fuse_is_lib_option(struct fsp_fuse_env *env,
     return fsp_fuse_opt_match(env, fsp_fuse_core_opts, opt);
 }
 
+static int fsp_fuse_username_to_uid(const char *username, int *puid)
+{
+    union
+    {
+        SID V;
+        UINT8 B[SECURITY_MAX_SID_SIZE];
+    } SidBuf;
+    char Name[256], Domn[256];
+    DWORD SidSize, NameSize, DomnSize;
+    SID_NAME_USE Use;
+    UINT32 Uid;
+    NTSTATUS Result;
+
+    *puid = 0;
+
+    NameSize = lstrlenA(username) + 1;
+    if (sizeof Name / sizeof Name[0] < NameSize)
+        return -1;
+    memcpy(Name, username, NameSize);
+    for (PSTR P = Name, EndP = P + NameSize; EndP > P; P++)
+        if ('+' == *P)
+            *P = '\\';
+
+    SidSize = sizeof SidBuf;
+    DomnSize = sizeof Domn / sizeof Domn[0];
+    if (!LookupAccountNameA(0, Name, &SidBuf, &SidSize, Domn, &DomnSize, &Use))
+        return -1;
+
+    Result = FspPosixMapSidToUid(&SidBuf, &Uid);
+    if (!NT_SUCCESS(Result))
+        return -1;
+
+    *puid = Uid;
+
+    return 0;
+}
+
 static int fsp_fuse_core_opt_proc(void *opt_data0, const char *arg, int key,
     struct fuse_args *outargs)
 {
@@ -241,9 +294,12 @@ static int fsp_fuse_core_opt_proc(void *opt_data0, const char *arg, int key,
             FSP_FUSE_LIBRARY_NAME " options:\n"
             "    -o umask=MASK              set file permissions (octal)\n"
             "    -o create_umask=MASK       set newly created file permissions (octal)\n"
+            "        -o create_file_umask=MASK      for files only\n"
+            "        -o create_dir_umask=MASK       for directories only\n"
             "    -o uid=N                   set file owner (-1 for mounting user id)\n"
             "    -o gid=N                   set file group (-1 for mounting user group)\n"
             "    -o rellinks                interpret absolute symlinks as volume relative\n"
+            "    -o dothidden               dot files have the Windows hidden file attrib\n"
             "    -o volname=NAME            set volume label\n"
             "    -o VolumePrefix=UNC        set UNC prefix (/Server/Share)\n"
             "        --VolumePrefix=UNC     set UNC prefix (\\Server\\Share)\n"
@@ -311,6 +367,28 @@ static int fsp_fuse_core_opt_proc(void *opt_data0, const char *arg, int key,
             [sizeof opt_data->VolumeParams.FileSystemName / sizeof(WCHAR) - 1] = L'\0';
         memcpy(opt_data->VolumeParams.FileSystemName, L"FUSE-", 5 * sizeof(WCHAR));
         return 0;
+    case 'u':
+        if ('U' == arg[0])
+            arg += sizeof "UserName=" - 1;
+        else if ('U' == arg[2])
+            arg += sizeof "--UserName=" - 1;
+        if (-1 == fsp_fuse_username_to_uid(arg, &opt_data->uid))
+        {
+            opt_data->username_to_uid_result = -1;
+            return -1;
+        }
+        return 0;
+    case 'g':
+        if ('G' == arg[0])
+            arg += sizeof "GroupName=" - 1;
+        else if ('G' == arg[2])
+            arg += sizeof "--GroupName=" - 1;
+        if (-1 == fsp_fuse_username_to_uid(arg, &opt_data->gid))
+        {
+            opt_data->username_to_uid_result = -1;
+            return -1;
+        }
+        return 0;
     case 'v':
         arg += sizeof "volname=" - 1;
         opt_data->VolumeLabelLength = (UINT16)(sizeof(WCHAR) *
@@ -355,7 +433,14 @@ FSP_FUSE_API struct fuse *fsp_fuse_new(struct fsp_fuse_env *env,
     opt_data.VolumeParams.FlushAndPurgeOnCleanup = TRUE;
 
     if (-1 == fsp_fuse_core_opt_parse(env, args, &opt_data, /*help=*/1))
+    {
+        if (-1 == opt_data.username_to_uid_result)
+        {
+            ErrorMessage = L": invalid user or group name.";
+            goto fail;
+        }
         return 0;
+    }
     if (opt_data.help)
         return 0;
 
@@ -422,9 +507,12 @@ FSP_FUSE_API struct fuse *fsp_fuse_new(struct fsp_fuse_env *env,
     f->env = env;
     f->set_umask = opt_data.set_umask; f->umask = opt_data.umask;
     f->set_create_umask = opt_data.set_create_umask; f->create_umask = opt_data.create_umask;
+    f->set_create_file_umask = opt_data.set_create_file_umask; f->create_file_umask = opt_data.create_file_umask;
+    f->set_create_dir_umask = opt_data.set_create_dir_umask; f->create_dir_umask = opt_data.create_dir_umask;
     f->set_uid = opt_data.set_uid; f->uid = opt_data.uid;
     f->set_gid = opt_data.set_gid; f->gid = opt_data.gid;
     f->rellinks = opt_data.rellinks;
+    f->dothidden = opt_data.dothidden;
     f->ThreadCount = opt_data.ThreadCount;
     memcpy(&f->ops, ops, opsize);
     f->data = data;

src/dll/fuse/fuse_intf.c

@@ -354,6 +354,7 @@ static inline UINT32 fsp_fuse_intf_MapFlagsToFileAttributes(uint32_t flags)
     return FileAttributes;
 }
 
+#define FUSE_FILE_INFO(IsDirectory, fi) ((IsDirectory) ? 0 : (fi))
 #define fsp_fuse_intf_GetFileInfoEx(FileSystem, PosixPath, fi, PUid, PGid, PMode, FileInfo)\
     fsp_fuse_intf_GetFileInfoFunnel(FileSystem, PosixPath, fi, 0, PUid, PGid, PMode, 0, FileInfo)
 static NTSTATUS fsp_fuse_intf_GetFileInfoFunnel(FSP_FILE_SYSTEM *FileSystem,
@@ -429,6 +430,15 @@ static NTSTATUS fsp_fuse_intf_GetFileInfoFunnel(FSP_FILE_SYSTEM *FileSystem,
     }
     if (StatEx)
         FileInfo->FileAttributes |= fsp_fuse_intf_MapFlagsToFileAttributes(stbuf.st_flags);
+    if (f->dothidden)
+    {
+        const char *basename = PosixPath;
+        for (const char *p = PosixPath; '\0' != *p; p++)
+            if ('/' == *p)
+                basename = p + 1;
+        if ('.' == basename[0])
+            FileInfo->FileAttributes |= FILE_ATTRIBUTE_HIDDEN;
+    }
     FileInfo->FileSize = stbuf.st_size;
     FileInfo->AllocationSize =
         (FileInfo->FileSize + AllocationUnit - 1) / AllocationUnit * AllocationUnit;
@@ -743,7 +753,7 @@ exit:
 static NTSTATUS fsp_fuse_intf_Create(FSP_FILE_SYSTEM *FileSystem,
     PWSTR FileName, UINT32 CreateOptions, UINT32 GrantedAccess,
     UINT32 FileAttributes, PSECURITY_DESCRIPTOR SecurityDescriptor, UINT64 AllocationSize,
-    PFILE_FULL_EA_INFORMATION Ea, ULONG EaLength,
+    PVOID ExtraBuffer, ULONG ExtraLength, BOOLEAN ExtraBufferIsReparsePoint,
     PVOID *PFileDesc, FSP_FSCTL_FILE_INFO *FileInfo)
 {
     struct fuse *f = FileSystem->UserContext;
@@ -757,12 +767,21 @@ static NTSTATUS fsp_fuse_intf_Create(FSP_FILE_SYSTEM *FileSystem,
     int err;
     NTSTATUS Result;
 
-    if (0 != Ea)
+    if (0 != ExtraBuffer)
     {
-        if (0 == f->ops.listxattr || 0 == f->ops.getxattr ||
-            0 == f->ops.setxattr || 0 == f->ops.removexattr)
+        if (!ExtraBufferIsReparsePoint)
         {
-            Result = STATUS_EAS_NOT_SUPPORTED;
+            if (0 == f->ops.listxattr || 0 == f->ops.getxattr ||
+                0 == f->ops.setxattr || 0 == f->ops.removexattr)
+            {
+                Result = STATUS_EAS_NOT_SUPPORTED;
+                goto exit;
+            }
+        }
+        else
+        {
+            /* !!!: revisit */
+            Result = STATUS_INVALID_PARAMETER;
             goto exit;
         }
     }
@@ -785,8 +804,22 @@ static NTSTATUS fsp_fuse_intf_Create(FSP_FILE_SYSTEM *FileSystem,
             goto exit;
     }
     Mode &= ~context->umask;
-    if (f->set_create_umask)
-        Mode = 0777 & ~f->create_umask;
+    if (CreateOptions & FILE_DIRECTORY_FILE)
+    {
+        if (f->set_create_dir_umask)
+            Mode = 0777 & ~f->create_dir_umask;
+        else
+        if (f->set_create_umask)
+            Mode = 0777 & ~f->create_umask;
+    }
+    else
+    {
+        if (f->set_create_file_umask)
+            Mode = 0777 & ~f->create_file_umask;
+        else
+        if (f->set_create_umask)
+            Mode = 0777 & ~f->create_umask;
+    }
 
     memset(&fi, 0, sizeof fi);
     if ('C' == f->env->environment) /* Cygwin */
@@ -866,12 +899,21 @@ static NTSTATUS fsp_fuse_intf_Create(FSP_FILE_SYSTEM *FileSystem,
             goto exit;
     }
 
-    if (0 != Ea)
+    if (0 != ExtraBuffer)
     {
-        Result = FspFileSystemEnumerateEa(FileSystem,
-            fsp_fuse_intf_SetEaEntry, contexthdr->PosixPath, Ea, EaLength);
-        if (!NT_SUCCESS(Result))
+        if (!ExtraBufferIsReparsePoint)
+        {
+            Result = FspFileSystemEnumerateEa(FileSystem,
+                fsp_fuse_intf_SetEaEntry, contexthdr->PosixPath, ExtraBuffer, ExtraLength);
+            if (!NT_SUCCESS(Result))
+                goto exit;
+        }
+        else
+        {
+            /* !!!: revisit: WslFeatures, GetFileInfoFunnel, GetReparsePointEx, SetReparsePoint */
+            Result = STATUS_INVALID_PARAMETER;
             goto exit;
+        }
     }
     /*
      * Ignore fuse_file_info::direct_io, fuse_file_info::keep_cache.
@@ -881,7 +923,8 @@ static NTSTATUS fsp_fuse_intf_Create(FSP_FILE_SYSTEM *FileSystem,
      * Ignore fuse_file_info::nonseekable.
      */
 
-    Result = fsp_fuse_intf_GetFileInfoEx(FileSystem, contexthdr->PosixPath, &fi,
+    Result = fsp_fuse_intf_GetFileInfoEx(FileSystem, contexthdr->PosixPath,
+        FUSE_FILE_INFO(CreateOptions & FILE_DIRECTORY_FILE, &fi),
         &Uid, &Gid, &Mode, &FileInfoBuf);
     if (!NT_SUCCESS(Result))
         goto exit;
@@ -1096,7 +1139,8 @@ static NTSTATUS fsp_fuse_intf_Overwrite(FSP_FILE_SYSTEM *FileSystem,
             return Result;
     }
 
-    return fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath, &fi,
+    return fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath,
+        FUSE_FILE_INFO(filedesc->IsDirectory, &fi),
         &Uid, &Gid, &Mode, FileInfo);
 }
 
@@ -1227,7 +1271,8 @@ static NTSTATUS fsp_fuse_intf_Write(FSP_FILE_SYSTEM *FileSystem,
     fi.flags = filedesc->OpenFlags;
     fi.fh = filedesc->FileHandle;
 
-    Result = fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath, &fi,
+    Result = fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath,
+        FUSE_FILE_INFO(filedesc->IsDirectory, &fi),
         &Uid, &Gid, &Mode, &FileInfoBuf);
     if (!NT_SUCCESS(Result))
         return Result;
@@ -1307,7 +1352,8 @@ static NTSTATUS fsp_fuse_intf_Flush(FSP_FILE_SYSTEM *FileSystem,
     if (!NT_SUCCESS(Result))
         return Result;
 
-    Result = fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath, &fi,
+    Result = fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath,
+        FUSE_FILE_INFO(filedesc->IsDirectory, &fi),
         &Uid, &Gid, &Mode, &FileInfoBuf);
     if (!NT_SUCCESS(Result))
         return Result;
@@ -1330,7 +1376,8 @@ static NTSTATUS fsp_fuse_intf_GetFileInfo(FSP_FILE_SYSTEM *FileSystem,
     fi.flags = filedesc->OpenFlags;
     fi.fh = filedesc->FileHandle;
 
-    return fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath, &fi,
+    return fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath,
+        FUSE_FILE_INFO(filedesc->IsDirectory, &fi),
         &Uid, &Gid, &Mode, FileInfo);
 }
 
@@ -1368,7 +1415,8 @@ static NTSTATUS fsp_fuse_intf_SetBasicInfo(FSP_FILE_SYSTEM *FileSystem,
     {
         if (0 == LastAccessTime || 0 == LastWriteTime)
         {
-            Result = fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath, &fi,
+            Result = fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath,
+                FUSE_FILE_INFO(filedesc->IsDirectory, &fi),
                 &Uid, &Gid, &Mode, &FileInfoBuf);
             if (!NT_SUCCESS(Result))
                 return Result;
@@ -1415,7 +1463,8 @@ static NTSTATUS fsp_fuse_intf_SetBasicInfo(FSP_FILE_SYSTEM *FileSystem,
             return Result;
     }
 
-    return fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath, &fi,
+    return fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath,
+        FUSE_FILE_INFO(filedesc->IsDirectory, &fi),
         &Uid, &Gid, &Mode, FileInfo);
 }
 
@@ -1442,7 +1491,8 @@ static NTSTATUS fsp_fuse_intf_SetFileSize(FSP_FILE_SYSTEM *FileSystem,
     fi.flags = filedesc->OpenFlags;
     fi.fh = filedesc->FileHandle;
 
-    Result = fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath, &fi,
+    Result = fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath,
+        FUSE_FILE_INFO(filedesc->IsDirectory, &fi),
         &Uid, &Gid, &Mode, &FileInfoBuf);
     if (!NT_SUCCESS(Result))
         return Result;
@@ -1589,7 +1639,8 @@ static NTSTATUS fsp_fuse_intf_GetSecurity(FSP_FILE_SYSTEM *FileSystem,
     fi.flags = filedesc->OpenFlags;
     fi.fh = filedesc->FileHandle;
 
-    return fsp_fuse_intf_GetSecurityEx(FileSystem, filedesc->PosixPath, &fi,
+    return fsp_fuse_intf_GetSecurityEx(FileSystem, filedesc->PosixPath,
+        FUSE_FILE_INFO(filedesc->IsDirectory, &fi),
         &FileAttributes, SecurityDescriptorBuf, PSecurityDescriptorSize);
 }
 
@@ -1613,8 +1664,9 @@ static NTSTATUS fsp_fuse_intf_SetSecurity(FSP_FILE_SYSTEM *FileSystem,
     fi.flags = filedesc->OpenFlags;
     fi.fh = filedesc->FileHandle;
 
-    Result = fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath, &fi, &Uid, &Gid, &Mode,
-        &FileInfo);
+    Result = fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath,
+        FUSE_FILE_INFO(filedesc->IsDirectory, &fi),
+        &Uid, &Gid, &Mode, &FileInfo);
     if (!NT_SUCCESS(Result))
         goto exit;
 
@@ -1712,7 +1764,7 @@ int fsp_fuse_intf_AddDirInfo(void *buf, const char *name,
         UINT32 Uid, Gid, Mode;
         NTSTATUS Result0;
 
-        Result0 = fsp_fuse_intf_GetFileInfoFunnel(dh->FileSystem, 0, 0, stbuf,
+        Result0 = fsp_fuse_intf_GetFileInfoFunnel(dh->FileSystem, name, 0, stbuf,
             &Uid, &Gid, &Mode, 0, &DirInfo->FileInfo);
         if (NT_SUCCESS(Result0))
             DirInfo->Padding[0] = 1; /* HACK: remember that the FileInfo is valid */
@@ -1972,7 +2024,9 @@ static NTSTATUS fsp_fuse_intf_GetReparsePoint(FSP_FILE_SYSTEM *FileSystem,
     fi.flags = filedesc->OpenFlags;
     fi.fh = filedesc->FileHandle;
 
-    return fsp_fuse_intf_GetReparsePointEx(FileSystem, filedesc->PosixPath, &fi, Buffer, PSize);
+    return fsp_fuse_intf_GetReparsePointEx(FileSystem, filedesc->PosixPath,
+        FUSE_FILE_INFO(filedesc->IsDirectory, &fi),
+        Buffer, PSize);
 }
 
 static NTSTATUS fsp_fuse_intf_SetReparsePoint(FSP_FILE_SYSTEM *FileSystem,
@@ -2043,7 +2097,8 @@ static NTSTATUS fsp_fuse_intf_SetReparsePoint(FSP_FILE_SYSTEM *FileSystem,
     fi.flags = filedesc->OpenFlags;
     fi.fh = filedesc->FileHandle;
 
-    Result = fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath, &fi,
+    Result = fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath,
+        FUSE_FILE_INFO(filedesc->IsDirectory, &fi),
         &Uid, &Gid, &Mode, &FileInfo);
     if (!NT_SUCCESS(Result))
         return Result;
@@ -2316,7 +2371,8 @@ static NTSTATUS fsp_fuse_intf_SetEa(FSP_FILE_SYSTEM *FileSystem,
     fi.flags = filedesc->OpenFlags;
     fi.fh = filedesc->FileHandle;
 
-    return fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath, &fi,
+    return fsp_fuse_intf_GetFileInfoEx(FileSystem, filedesc->PosixPath,
+        FUSE_FILE_INFO(filedesc->IsDirectory, &fi),
         &Uid, &Gid, &Mode, FileInfo);
 }
 

src/dll/fuse/fuse_opt.c

@@ -216,11 +216,13 @@ static int fsp_fuse_opt_call_proc(struct fsp_fuse_env *env,
             goto exit;
     }
 
+    result = 0;
+
 exit:
     if (0 != fullarg)
         env->memfree(fullarg);
 
-    return 0;
+    return result;
 }
 
 static int fsp_fuse_opt_process_arg(struct fsp_fuse_env *env,

src/dll/fuse/library.h

@@ -50,9 +50,12 @@ struct fuse
     struct fsp_fuse_env *env;
     int set_umask, umask;
     int set_create_umask, create_umask;
+    int set_create_file_umask, create_file_umask;
+    int set_create_dir_umask, create_dir_umask;
     int set_uid, uid;
     int set_gid, gid;
     int rellinks;
+    int dothidden;
     unsigned ThreadCount;
     struct fuse_operations ops;
     void *data;
@@ -137,10 +140,13 @@ struct fsp_fuse_core_opt_data
     HANDLE DebugLogHandle;
     int set_umask, umask,
         set_create_umask, create_umask,
-        set_uid, uid,
+        set_create_file_umask, create_file_umask,
+        set_create_dir_umask, create_dir_umask,
+        set_uid, uid, username_to_uid_result,
         set_gid, gid,
         set_attr_timeout, attr_timeout,
-        rellinks;
+        rellinks,
+        dothidden;
     int set_FileInfoTimeout,
         set_DirInfoTimeout,
         set_EaTimeout,

src/dotnet/FileSystemBase.cs

@@ -1085,8 +1085,9 @@ namespace Fsp
             UInt32 FileAttributes,
             Byte[] SecurityDescriptor,
             UInt64 AllocationSize,
-            IntPtr Ea,
-            UInt32 EaLength,
+            IntPtr ExtraBuffer,
+            UInt32 ExtraLength,
+            Boolean ExtraBufferIsReparsePoint,
             out Object FileNode,
             out Object FileDesc,
             out FileInfo FileInfo,
@@ -1391,6 +1392,16 @@ namespace Fsp
             }
         }
         /// <summary>
+        /// Makes a byte array that contains a reparse point.
+        /// </summary>
+        /// <returns>The reparse point byte array.</returns>
+        public static Byte[] MakeReparsePoint(
+            IntPtr Buffer,
+            UInt32 Size)
+        {
+            return Api.MakeReparsePoint(Buffer, (UIntPtr)Size);
+        }
+        /// <summary>
         /// Gets the reparse tag from reparse data.
         /// </summary>
         /// <param name="ReparseData">

src/dotnet/FileSystemHost.cs

@@ -40,6 +40,7 @@ namespace Fsp
         /// <param name="FileSystem">The file system to host.</param>
         public FileSystemHost(FileSystemBase FileSystem)
         {
+            _VolumeParams.Version = (UInt16)Marshal.SizeOf(_VolumeParams);
             _VolumeParams.Flags = VolumeParams.UmFileContextIsFullContext;
             _FileSystem = FileSystem;
         }
@@ -126,6 +127,86 @@ namespace Fsp
             set { _VolumeParams.FileInfoTimeout = value; }
         }
         /// <summary>
+        /// Gets or sets the volume information timeout.
+        /// </summary>
+        public UInt32 VolumeInfoTimeout
+        {
+            get
+            {
+                return 0 != (_VolumeParams.AdditionalFlags & VolumeParams.VolumeInfoTimeoutValid) ?
+                    _VolumeParams.VolumeInfoTimeout : _VolumeParams.FileInfoTimeout;
+            }
+            set
+            {
+                _VolumeParams.AdditionalFlags |= VolumeParams.VolumeInfoTimeoutValid;
+                _VolumeParams.VolumeInfoTimeout = value;
+            }
+        }
+        /// <summary>
+        /// Gets or sets the directory information timeout.
+        /// </summary>
+        public UInt32 DirInfoTimeout
+        {
+            get
+            {
+                return 0 != (_VolumeParams.AdditionalFlags & VolumeParams.DirInfoTimeoutValid) ?
+                    _VolumeParams.DirInfoTimeout : _VolumeParams.FileInfoTimeout;
+            }
+            set
+            {
+                _VolumeParams.AdditionalFlags |= VolumeParams.DirInfoTimeoutValid;
+                _VolumeParams.DirInfoTimeout = value;
+            }
+        }
+        /// <summary>
+        /// Gets or sets the security information timeout.
+        /// </summary>
+        public UInt32 SecurityTimeout
+        {
+            get
+            {
+                return 0 != (_VolumeParams.AdditionalFlags & VolumeParams.SecurityTimeoutValid) ?
+                    _VolumeParams.SecurityTimeout : _VolumeParams.FileInfoTimeout;
+            }
+            set
+            {
+                _VolumeParams.AdditionalFlags |= VolumeParams.SecurityTimeoutValid;
+                _VolumeParams.SecurityTimeout = value;
+            }
+        }
+        /// <summary>
+        /// Gets or sets the stream information timeout.
+        /// </summary>
+        public UInt32 StreamInfoTimeout
+        {
+            get
+            {
+                return 0 != (_VolumeParams.AdditionalFlags & VolumeParams.StreamInfoTimeoutValid) ?
+                    _VolumeParams.StreamInfoTimeout : _VolumeParams.FileInfoTimeout;
+            }
+            set
+            {
+                _VolumeParams.AdditionalFlags |= VolumeParams.StreamInfoTimeoutValid;
+                _VolumeParams.StreamInfoTimeout = value;
+            }
+        }
+        /// <summary>
+        /// Gets or sets the EA information timeout.
+        /// </summary>
+        public UInt32 EaTimeout
+        {
+            get
+            {
+                return 0 != (_VolumeParams.AdditionalFlags & VolumeParams.EaTimeoutValid) ?
+                    _VolumeParams.EaTimeout : _VolumeParams.FileInfoTimeout;
+            }
+            set
+            {
+                _VolumeParams.AdditionalFlags |= VolumeParams.EaTimeoutValid;
+                _VolumeParams.EaTimeout = value;
+            }
+        }
+        /// <summary>
         /// Gets or sets a value that determines whether the file system is case sensitive.
         /// </summary>
         public Boolean CaseSensitiveSearch
@@ -221,6 +302,11 @@ namespace Fsp
             get { return 0 != (_VolumeParams.Flags & VolumeParams.AllowOpenInKernelMode); }
             set { _VolumeParams.Flags |= (value ? VolumeParams.AllowOpenInKernelMode : 0); }
         }
+        public Boolean WslFeatures
+        {
+            get { return 0 != (_VolumeParams.Flags & VolumeParams.WslFeatures); }
+            set { _VolumeParams.Flags |= (value ? VolumeParams.WslFeatures : 0); }
+        }
         /// <summary>
         /// Gets or sets the prefix for a network file system.
         /// </summary>
@@ -274,11 +360,44 @@ namespace Fsp
         /// A value of 0 disables all debug logging.
         /// A value of -1 enables all debug logging.
         /// </param>
-        /// <returns></returns>
+        /// <returns>STATUS_SUCCESS or error code.</returns>
         public Int32 Mount(String MountPoint,
             Byte[] SecurityDescriptor = null,
             Boolean Synchronized = false,
             UInt32 DebugLog = 0)
+        {
+            return MountEx(MountPoint, 0, SecurityDescriptor, Synchronized, DebugLog);
+        }
+        /// <summary>
+        /// Mounts a file system.
+        /// </summary>
+        /// <param name="MountPoint">
+        /// The mount point for the new file system. A value of null means that
+        /// the file system should use the next available drive letter counting
+        /// downwards from Z: as its mount point.
+        /// </param>
+        /// <param name="ThreadCount">
+        /// Number of threads to use to service file system requests. A value
+        /// of 0 means that the default number of threads should be used.
+        /// </param>
+        /// <param name="SecurityDescriptor">
+        /// Security descriptor to use if mounting on (newly created) directory.
+        /// A value of null means the directory should be created with default
+        /// security.
+        /// </param>
+        /// <param name="Synchronized">
+        /// If true file system operations are synchronized using an exclusive lock.
+        /// </param>
+        /// <param name="DebugLog">
+        /// A value of 0 disables all debug logging.
+        /// A value of -1 enables all debug logging.
+        /// </param>
+        /// <returns>STATUS_SUCCESS or error code.</returns>
+        public Int32 MountEx(String MountPoint,
+            UInt32 ThreadCount,
+            Byte[] SecurityDescriptor = null,
+            Boolean Synchronized = false,
+            UInt32 DebugLog = 0)
         {
             Int32 Result;
             try
@@ -315,7 +434,7 @@ namespace Fsp
                 }
                 if (0 <= Result)
                 {
-                    Result = Api.FspFileSystemStartDispatcher(_FileSystemPtr, 0);
+                    Result = Api.FspFileSystemStartDispatcher(_FileSystemPtr, ThreadCount);
                     if (0 > Result)
                         try
                         {
@@ -381,6 +500,83 @@ namespace Fsp
         {
             return Api.GetVersion();
         }
+        /// <summary>
+        /// Returns a RequestHint to reference the current operation asynchronously.
+        /// </summary>
+        public UInt64 GetOperationRequestHint()
+        {
+            return Api.FspFileSystemGetOperationRequestHint();
+        }
+        /// <summary>
+        /// Asynchronously complete a Read operation.
+        /// </summary>
+        /// <param name="RequestHint">
+        /// A reference to the operation to complete.
+        /// </param>
+        /// <param name="Status">
+        /// STATUS_SUCCESS or error code.
+        /// </param>
+        /// <param name="BytesTransferred">
+        /// Number of bytes read.
+        /// </param>
+        public void SendReadResponse(UInt64 RequestHint, Int32 Status, UInt32 BytesTransferred)
+        {
+            FspFsctlTransactRsp Response = default(FspFsctlTransactRsp);
+            Response.Size = 128;
+            Response.Kind = (UInt32)FspFsctlTransact.ReadKind;
+            Response.Hint = RequestHint;
+            Response.IoStatus.Information = BytesTransferred;
+            Response.IoStatus.Status = (UInt32)Status;
+            Api.FspFileSystemSendResponse(_FileSystemPtr, ref Response);
+        }
+        /// <summary>
+        /// Asynchronously complete a Write operation.
+        /// </summary>
+        /// <param name="RequestHint">
+        /// A reference to the operation to complete.
+        /// </param>
+        /// <param name="Status">
+        /// STATUS_SUCCESS or error code.
+        /// </param>
+        /// <param name="BytesTransferred">
+        /// The number of bytes written.
+        /// </param>
+        /// <param name="FileInfo">
+        /// Updated file information.
+        /// </param>
+        public void SendWriteResponse(UInt64 RequestHint, Int32 Status, UInt32 BytesTransferred, ref FileInfo FileInfo)
+        {
+            FspFsctlTransactRsp Response = default(FspFsctlTransactRsp);
+            Response.Size = 128;
+            Response.Kind = (UInt32)FspFsctlTransact.WriteKind;
+            Response.Hint = RequestHint;
+            Response.IoStatus.Information = BytesTransferred;
+            Response.IoStatus.Status = (UInt32)Status;
+            Response.WriteFileInfo = FileInfo;
+            Api.FspFileSystemSendResponse(_FileSystemPtr, ref Response);
+        }
+        /// <summary>
+        /// Asynchronously complete a ReadDirectory operation.
+        /// </summary>
+        /// <param name="RequestHint">
+        /// A reference to the operation to complete.
+        /// </param>
+        /// <param name="Status">
+        /// STATUS_SUCCESS or error code.
+        /// </param>
+        /// <param name="BytesTransferred">
+        /// Number of bytes read.
+        /// </param>
+        public void SendReadDirectoryResponse(UInt64 RequestHint, Int32 Status, UInt32 BytesTransferred)
+        {
+            FspFsctlTransactRsp Response = default(FspFsctlTransactRsp);
+            Response.Size = 128;
+            Response.Kind = (UInt32)FspFsctlTransact.QueryDirectoryKind;
+            Response.Hint = RequestHint;
+            Response.IoStatus.Information = BytesTransferred;
+            Response.IoStatus.Status = (UInt32)Status;
+            Api.FspFileSystemSendResponse(_FileSystemPtr, ref Response);
+        }
 
         /* FSP_FILE_SYSTEM_INTERFACE */
         private static Byte[] ByteBufferNotNull = new Byte[0];
@@ -472,8 +668,9 @@ namespace Fsp
             UInt32 FileAttributes,
             IntPtr SecurityDescriptor,
             UInt64 AllocationSize,
-            IntPtr Ea,
-            UInt32 EaLength,
+            IntPtr ExtraBuffer,
+            UInt32 ExtraLength,
+            Boolean ExtraBufferIsReparsePoint,
             ref FullContext FullContext,
             ref OpenFileInfo OpenFileInfo)
         {
@@ -490,8 +687,9 @@ namespace Fsp
                     FileAttributes,
                     Api.MakeSecurityDescriptor(SecurityDescriptor),
                     AllocationSize,
-                    Ea,
-                    EaLength,
+                    ExtraBuffer,
+                    ExtraLength,
+                    ExtraBufferIsReparsePoint,
                     out FileNode,
                     out FileDesc,
                     out OpenFileInfo.FileInfo,

src/dotnet/Interop.cs

@@ -53,9 +53,16 @@ namespace Fsp.Interop
         internal const UInt32 UmFileContextIsFullContext = 0x00020000;
         internal const UInt32 AllowOpenInKernelMode = 0x01000000;
         internal const UInt32 CasePreservedExtendedAttributes = 0x02000000;
+        internal const UInt32 WslFeatures = 0x04000000;
         internal const int PrefixSize = 192;
         internal const int FileSystemNameSize = 16;
 
+        internal const UInt32 VolumeInfoTimeoutValid = 0x00000001;
+        internal const UInt32 DirInfoTimeoutValid = 0x00000002;
+        internal const UInt32 SecurityTimeoutValid = 0x00000004;
+        internal const UInt32 StreamInfoTimeoutValid = 0x00000008;
+        internal const UInt32 EaTimeoutValid = 0x00000010;
+
         internal UInt16 Version;
         internal UInt16 SectorSize;
         internal UInt16 SectorsPerAllocationUnit;
@@ -69,6 +76,15 @@ namespace Fsp.Interop
         internal UInt32 Flags;
         internal unsafe fixed UInt16 Prefix[PrefixSize];
         internal unsafe fixed UInt16 FileSystemName[FileSystemNameSize];
+        internal UInt32 AdditionalFlags;
+        internal UInt32 VolumeInfoTimeout;
+        internal UInt32 DirInfoTimeout;
+        internal UInt32 SecurityTimeout;
+        internal UInt32 StreamInfoTimeout;
+        internal UInt32 EaTimeout;
+        internal UInt32 FsextControlCode;
+        internal unsafe fixed UInt32 Reserved32[1];
+        internal unsafe fixed UInt64 Reserved64[2];
 
         internal unsafe String GetPrefix()
         {
@@ -354,6 +370,65 @@ namespace Fsp.Interop
         public IntPtr Information;
     }
 
+    [StructLayout(LayoutKind.Sequential)]
+    internal struct IoStatus
+    {
+        internal UInt32 Information;
+        internal UInt32 Status;
+    }
+
+    internal enum FspFsctlTransact
+    {
+        ReadKind = 5,
+        WriteKind = 6,
+        QueryDirectoryKind = 14
+    }
+
+    [StructLayout(LayoutKind.Explicit)]
+    internal struct FspFsctlTransactReq
+    {
+        [FieldOffset(0)]
+        internal UInt16 Version;
+        [FieldOffset(2)]
+        internal UInt16 Size;
+        [FieldOffset(4)]
+        internal UInt32 Kind;
+        [FieldOffset(8)]
+        internal UInt64 Hint;
+
+        [FieldOffset(0)]
+        internal unsafe fixed Byte Padding[88];
+    }
+
+    [StructLayout(LayoutKind.Explicit)]
+    internal struct FspFsctlTransactRsp
+    {
+        [FieldOffset(0)]
+        internal UInt16 Version;
+        [FieldOffset(2)]
+        internal UInt16 Size;
+        [FieldOffset(4)]
+        internal UInt32 Kind;
+        [FieldOffset(8)]
+        internal UInt64 Hint;
+
+        [FieldOffset(16)]
+        internal IoStatus IoStatus;
+
+        [FieldOffset(24)]
+        internal FileInfo WriteFileInfo;
+
+        [FieldOffset(0)]
+        internal unsafe fixed Byte Padding[128];
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    internal unsafe struct FspFileSystemOperationContext
+    {
+        internal FspFsctlTransactReq *Request;
+        internal FspFsctlTransactRsp *Response;
+    }
+
     [StructLayout(LayoutKind.Sequential)]
     internal struct FileSystemInterface
     {
@@ -557,8 +632,9 @@ namespace Fsp.Interop
                 UInt32 FileAttributes,
                 IntPtr SecurityDescriptor,
                 UInt64 AllocationSize,
-                IntPtr Ea,
-                UInt32 EaLength,
+                IntPtr ExtraBuffer,
+                UInt32 ExtraLength,
+                [MarshalAs(UnmanagedType.U1)] Boolean ExtraBufferIsReparsePoint,
                 ref FullContext FullContext,
                 ref OpenFileInfo OpenFileInfo);
             [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
@@ -662,6 +738,12 @@ namespace Fsp.Interop
             internal delegate Int32 FspFileSystemStopDispatcher(
                 IntPtr FileSystem);
             [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+            internal delegate void FspFileSystemSendResponse(
+                IntPtr FileSystem,
+                ref FspFsctlTransactRsp Response);
+            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+            internal unsafe delegate FspFileSystemOperationContext *FspFileSystemGetOperationContext();
+            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
             internal delegate IntPtr FspFileSystemMountPointF(
                 IntPtr FileSystem);
             [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
@@ -846,6 +928,8 @@ namespace Fsp.Interop
         internal static Proto.FspFileSystemRemoveMountPoint FspFileSystemRemoveMountPoint;
         internal static Proto.FspFileSystemStartDispatcher FspFileSystemStartDispatcher;
         internal static Proto.FspFileSystemStopDispatcher FspFileSystemStopDispatcher;
+        internal static Proto.FspFileSystemSendResponse FspFileSystemSendResponse;
+        internal static Proto.FspFileSystemGetOperationContext FspFileSystemGetOperationContext;
         internal static Proto.FspFileSystemMountPointF FspFileSystemMountPoint;
         internal static Proto.FspFileSystemSetOperationGuardStrategyF FspFileSystemSetOperationGuardStrategy;
         internal static Proto.FspFileSystemSetDebugLogF FspFileSystemSetDebugLog;
@@ -892,6 +976,10 @@ namespace Fsp.Interop
             else
                 return _FspFileSystemSetMountPointEx(FileSystem, MountPoint, IntPtr.Zero);
         }
+        internal static unsafe UInt64 FspFileSystemGetOperationRequestHint()
+        {
+            return FspFileSystemGetOperationContext()->Request->Hint;
+        }
         internal static unsafe Boolean FspFileSystemAddDirInfo(
             ref DirInfo DirInfo,
             IntPtr Buffer,
@@ -1240,6 +1328,8 @@ namespace Fsp.Interop
             FspFileSystemRemoveMountPoint = GetEntryPoint<Proto.FspFileSystemRemoveMountPoint>(Module);
             FspFileSystemStartDispatcher = GetEntryPoint<Proto.FspFileSystemStartDispatcher>(Module);
             FspFileSystemStopDispatcher = GetEntryPoint<Proto.FspFileSystemStopDispatcher>(Module);
+            FspFileSystemSendResponse = GetEntryPoint<Proto.FspFileSystemSendResponse>(Module);
+            FspFileSystemGetOperationContext = GetEntryPoint<Proto.FspFileSystemGetOperationContext>(Module);
             FspFileSystemMountPoint = GetEntryPoint<Proto.FspFileSystemMountPointF>(Module);
             FspFileSystemSetOperationGuardStrategy = GetEntryPoint<Proto.FspFileSystemSetOperationGuardStrategyF>(Module);
             FspFileSystemSetDebugLog = GetEntryPoint<Proto.FspFileSystemSetDebugLogF>(Module);

src/ku/library.h

@@ -0,0 +1,222 @@
+/**
+ * @file ku/library.h
+ *
+ * @copyright 2015-2019 Bill Zissimopoulos
+ */
+/*
+ * This file is part of WinFsp.
+ *
+ * You can redistribute it and/or modify it under the terms of the GNU
+ * General Public License version 3 as published by the Free Software
+ * Foundation.
+ *
+ * Licensees holding a valid commercial license may use this software
+ * in accordance with the commercial license agreement provided in
+ * conjunction with the software.  The terms and conditions of any such
+ * commercial license agreement shall govern, supersede, and render
+ * ineffective any application of the GPLv3 license to this software,
+ * notwithstanding of any reference thereto in the software or
+ * associated repository.
+ */
+
+#ifndef WINFSP_KU_LIBRARY_H_INCLUDED
+#define WINFSP_KU_LIBRARY_H_INCLUDED
+
+#if !defined(_KERNEL_MODE)
+
+#include <dll/library.h>
+#include <aclapi.h>
+#define _NTDEF_
+#include <ntsecapi.h>
+
+#define FSP_KU_CODE                     ((void)0)
+
+#else
+
+#include <sys/driver.h>
+
+#define FSP_KU_CODE                     PAGED_CODE(); NTSTATUS fsp_ku_status = STATUS_SUCCESS; (VOID)fsp_ku_status
+
+#define FSP_API                         FSP_DDI
+
+#define BYTE                            UINT8
+#define BOOL                            BOOLEAN
+#define LPBOOL                          PBOOLEAN
+#define UINT                            ULONG
+
+#define GetLastError()                  ((DWORD)fsp_ku_status)
+#define FspNtStatusFromWin32(Err)       ((NTSTATUS)(Err))
+#define ERROR_INSUFFICIENT_BUFFER       STATUS_BUFFER_TOO_SMALL
+
+#define InitOnceExecuteOnce(I, F, P, C) RtlRunOnceExecuteOnce(I, F, P, C)
+#define INIT_ONCE                       RTL_RUN_ONCE
+#define INIT_ONCE_STATIC_INIT           RTL_RUN_ONCE_INIT
+
+#define AddAccessAllowedAce(Acl, Rev, Acc, Sid)\
+                                        (fsp_ku_status = RtlAddAccessAllowedAce(Acl, Rev, Acc, Sid),\
+                                            NT_SUCCESS(fsp_ku_status))
+#define AddAccessDeniedAce(Acl, Rev, Acc, Sid)\
+                                        (fsp_ku_status = FspKuAddAccessDeniedAce(Acl, Rev, Acc, Sid),\
+                                            NT_SUCCESS(fsp_ku_status))
+#define EqualSid(Sid1, Sid2)            (fsp_ku_status = 0, RtlEqualSid(Sid1, Sid2))
+#define GetAce(Acl, Idx, Ace)           (fsp_ku_status = RtlGetAce(Acl, Idx, Ace), NT_SUCCESS(fsp_ku_status))
+#define GetAclInformation(Acl, Inf, Len, Cls)\
+                                        (fsp_ku_status = FspKuQueryInformationAcl(Acl, Inf, Len, Cls),\
+                                            NT_SUCCESS(fsp_ku_status))
+#define GetLengthSid(Sid)               (fsp_ku_status = 0, RtlLengthSid(Sid))
+#define GetSecurityDescriptorDacl(Sec, Prs, Dac, Def)\
+                                        (fsp_ku_status = RtlGetDaclSecurityDescriptor(Sec, Prs, Dac, Def),\
+                                            NT_SUCCESS(fsp_ku_status))
+#define GetSecurityDescriptorGroup(Sec, Grp, Def)\
+                                        (fsp_ku_status = RtlGetGroupSecurityDescriptor(Sec, Grp, Def),\
+                                            NT_SUCCESS(fsp_ku_status))
+#define GetSecurityDescriptorOwner(Sec, Own, Def)\
+                                        (fsp_ku_status = RtlGetOwnerSecurityDescriptor(Sec, Own, Def),\
+                                            NT_SUCCESS(fsp_ku_status))
+#define GetSidIdentifierAuthority(Sid)  (fsp_ku_status = 0, &((PISID)(Sid))->IdentifierAuthority)
+#define GetSidSubAuthority(Sid, Sub)    (fsp_ku_status = 0, RtlSubAuthoritySid(Sid, Sub))
+#define GetSidSubAuthorityCount(Sid)    (fsp_ku_status = 0, RtlSubAuthorityCountSid(Sid))
+#define InitializeAcl(Acl, Len, Rev)    (fsp_ku_status = RtlCreateAcl(Acl, Len, Rev), NT_SUCCESS(fsp_ku_status))
+#define InitializeSecurityDescriptor(Sec, Rev)\
+                                        (fsp_ku_status = RtlCreateSecurityDescriptor(Sec, Rev),\
+                                            NT_SUCCESS(fsp_ku_status))
+#define InitializeSid(Sid, Aut, Cnt)    (fsp_ku_status = RtlInitializeSid(Sid, Aut, Cnt), NT_SUCCESS(fsp_ku_status))
+#define IsValidSid(Sid)                 (RtlValidSid(Sid) || (fsp_ku_status = STATUS_INVALID_SID, FALSE))
+#define MakeSelfRelativeSD(Abs, Rel, Len)\
+                                        (fsp_ku_status = RtlAbsoluteToSelfRelativeSD(Abs, Rel, Len),\
+                                            NT_SUCCESS(fsp_ku_status))
+#define SetSecurityDescriptorControl(Sec, Msk, Bit)\
+                                        (fsp_ku_status = FspKuSetControlSecurityDescriptor(Sec, Msk, Bit),\
+                                            NT_SUCCESS(fsp_ku_status))
+#define SetSecurityDescriptorDacl(Sec, Prs, Dac, Def)\
+                                        (fsp_ku_status = RtlSetDaclSecurityDescriptor(Sec, Prs, Dac, Def),\
+                                            NT_SUCCESS(fsp_ku_status))
+#define SetSecurityDescriptorGroup(Sec, Grp, Def)\
+                                        (fsp_ku_status = RtlSetGroupSecurityDescriptor(Sec, Grp, Def),\
+                                            NT_SUCCESS(fsp_ku_status))
+#define SetSecurityDescriptorOwner(Sec, Own, Def)\
+                                        (fsp_ku_status = RtlSetOwnerSecurityDescriptor(Sec, Own, Def),\
+                                            NT_SUCCESS(fsp_ku_status))
+static inline NTSTATUS FspKuAddAccessDeniedAce(
+    PACL Acl,
+    ULONG AceRevision,
+    ACCESS_MASK AccessMask,
+    PSID Sid)
+{
+    /* We are missing RtlAddAccessDeniedAce. So we need this malarkey! */
+    NTSTATUS Result;
+    PACE_HEADER Ace;
+    Result = RtlAddAccessAllowedAce(Acl, AceRevision, AccessMask, Sid);
+    if (!NT_SUCCESS(Result))
+        return Result;
+    Result = RtlGetAce(Acl, Acl->AceCount - 1, &Ace);
+    if (!NT_SUCCESS(Result))
+        return Result;
+    Ace->AceType = ACCESS_DENIED_ACE_TYPE;
+    return STATUS_SUCCESS;
+}
+typedef enum
+{
+    AclRevisionInformation__DO_NOT_USE = 1,
+    AclSizeInformation,
+} ACL_INFORMATION_CLASS;
+typedef struct
+{
+    DWORD AceCount;
+    DWORD AclBytesInUse__DO_NOT_USE;
+    DWORD AclBytesFree__DO_NOT_USE;
+} ACL_SIZE_INFORMATION, *PACL_SIZE_INFORMATION;
+static inline NTSTATUS FspKuQueryInformationAcl(
+    PACL Acl,
+    PVOID AclInformation,
+    ULONG AclInformationLength,
+    ACL_INFORMATION_CLASS AclInformationClass)
+{
+    ASSERT(AclSizeInformation == AclInformationClass);
+    ASSERT(sizeof(ACL_SIZE_INFORMATION) <= AclInformationLength);
+    ((PACL_SIZE_INFORMATION)AclInformation)->AceCount = Acl->AceCount;
+    return STATUS_SUCCESS;
+}
+static inline NTSTATUS FspKuSetControlSecurityDescriptor(
+    PSECURITY_DESCRIPTOR SecurityDescriptor,
+    SECURITY_DESCRIPTOR_CONTROL ControlMask,
+    SECURITY_DESCRIPTOR_CONTROL ControlBits)
+{
+    ((PUSHORT)(SecurityDescriptor))[1] &= ~ControlMask;
+    ((PUSHORT)(SecurityDescriptor))[1] |= ControlBits;
+    return STATUS_SUCCESS;
+}
+
+#define WideCharToMultiByte(C, F, W, w, B, b, D, d)\
+                                        (FspKuWideCharToMultiByte(C, F, W, w, B, b, D, d, &fsp_ku_status))
+#define MultiByteToWideChar(C, F, B, b, W, w)\
+                                        (FspKuMultiByteToWideChar(C, F, B, b, W, w, &fsp_ku_status))
+#define CP_UTF8                         65001
+static inline int FspKuWideCharToMultiByte(
+    UINT CodePage,
+    DWORD dwFlags,
+    LPCWCH lpWideCharStr,
+    int cchWideChar,
+    LPSTR lpMultiByteStr,
+    int cbMultiByte,
+    LPCCH lpDefaultChar,
+    LPBOOL lpUsedDefaultChar,
+    PNTSTATUS PResult)
+{
+    ASSERT(CP_UTF8 == CodePage);
+    ASSERT(0 == dwFlags);
+    ASSERT(0 == lpDefaultChar);
+    ASSERT(0 == lpUsedDefaultChar);
+    NTSTATUS Result;
+    ULONG ByteCount;
+    if (-1 == cchWideChar)
+        cchWideChar = (int)wcslen(lpWideCharStr) + 1;
+    Result = RtlUnicodeToUTF8N(
+        lpMultiByteStr, cbMultiByte, &ByteCount,
+        lpWideCharStr, cchWideChar * sizeof(WCHAR));
+    if (STATUS_SOME_NOT_MAPPED == Result)
+        Result = STATUS_SUCCESS;
+    else if (!NT_SUCCESS(Result))
+        return 0;
+    *PResult = Result;
+    return ByteCount;
+}
+static inline int FspKuMultiByteToWideChar(
+    UINT CodePage,
+    DWORD dwFlags,
+    LPCCH lpMultiByteStr,
+    int cbMultiByte,
+    LPWSTR lpWideCharStr,
+    int cchWideChar,
+    PNTSTATUS PResult)
+{
+    ASSERT(CP_UTF8 == CodePage);
+    ASSERT(0 == dwFlags);
+    NTSTATUS Result;
+    ULONG ByteCount;
+    if (-1 == cbMultiByte)
+        cbMultiByte = (int)strlen(lpMultiByteStr) + 1;
+    Result = RtlUTF8ToUnicodeN(
+        lpWideCharStr, cchWideChar * sizeof(WCHAR), &ByteCount,
+        lpMultiByteStr, cbMultiByte);
+    if (STATUS_SOME_NOT_MAPPED == Result)
+        Result = STATUS_SUCCESS;
+    else if (!NT_SUCCESS(Result))
+        return 0;
+    *PResult = Result;
+    return ByteCount / sizeof(WCHAR);
+}
+
+static inline void *MemAlloc(size_t Size)
+{
+    return FspAlloc(Size);
+}
+static inline void MemFree(void *Pointer)
+{
+    if (0 != Pointer)
+        FspFree(Pointer);
+}
+
+#endif
+
+#endif

src/ku/posix.c

@@ -1,5 +1,5 @@
 /**
- * @file dll/posix.c
+ * @file ku/posix.c
  * POSIX Interop.
  *
  * This file provides routines for Windows/POSIX interoperability. It is based
@@ -32,15 +32,67 @@
  * associated repository.
  */
 
-#include <dll/library.h>
-#include <aclapi.h>
-#define _NTDEF_
-#include <ntsecapi.h>
+#include <ku/library.h>
 
+FSP_API NTSTATUS FspPosixMapUidToSid(UINT32 Uid, PSID *PSid);
+FSP_API NTSTATUS FspPosixMapSidToUid(PSID Sid, PUINT32 PUid);
 static PISID FspPosixCreateSid(BYTE Authority, ULONG Count, ...);
+FSP_API VOID FspDeleteSid(PSID Sid, NTSTATUS (*CreateFunc)());
+FSP_API NTSTATUS FspPosixMapPermissionsToSecurityDescriptor(
+    UINT32 Uid, UINT32 Gid, UINT32 Mode,
+    PSECURITY_DESCRIPTOR *PSecurityDescriptor);
+FSP_API NTSTATUS FspPosixMapSecurityDescriptorToPermissions(
+    PSECURITY_DESCRIPTOR SecurityDescriptor,
+    PUINT32 PUid, PUINT32 PGid, PUINT32 PMode);
+FSP_API NTSTATUS FspPosixMapWindowsToPosixPathEx(PWSTR WindowsPath, char **PPosixPath,
+    BOOLEAN Translate);
+FSP_API NTSTATUS FspPosixMapPosixToWindowsPathEx(const char *PosixPath, PWSTR *PWindowsPath,
+    BOOLEAN Translate);
+FSP_API VOID FspPosixDeletePath(void *Path);
+FSP_API VOID FspPosixEncodeWindowsPath(PWSTR WindowsPath, ULONG Size);
+FSP_API VOID FspPosixDecodeWindowsPath(PWSTR WindowsPath, ULONG Size);
 
-static INIT_ONCE FspPosixInitOnce = INIT_ONCE_STATIC_INIT;
-union
+#if defined(_KERNEL_MODE)
+#ifdef ALLOC_PRAGMA
+#pragma alloc_text(PAGE, FspPosixMapUidToSid)
+#pragma alloc_text(PAGE, FspPosixMapSidToUid)
+#pragma alloc_text(PAGE, FspPosixCreateSid)
+#pragma alloc_text(PAGE, FspDeleteSid)
+#pragma alloc_text(PAGE, FspPosixMapPermissionsToSecurityDescriptor)
+#pragma alloc_text(PAGE, FspPosixMapSecurityDescriptorToPermissions)
+#pragma alloc_text(PAGE, FspPosixMapWindowsToPosixPathEx)
+#pragma alloc_text(PAGE, FspPosixMapPosixToWindowsPathEx)
+#pragma alloc_text(PAGE, FspPosixDeletePath)
+#pragma alloc_text(PAGE, FspPosixEncodeWindowsPath)
+#pragma alloc_text(PAGE, FspPosixDecodeWindowsPath)
+#endif
+#endif
+
+static union
+{
+    SID V;
+    UINT8 B[sizeof(SID) - sizeof(DWORD) + (1 * sizeof(DWORD))];
+} FspWorldSidBuf =
+{
+    /* S-1-1-0 */
+    .V.Revision = SID_REVISION,
+    .V.SubAuthorityCount = 1,
+    .V.IdentifierAuthority.Value[5] = 1,
+    .V.SubAuthority[0] = 0,
+};
+static union
+{
+    SID V;
+    UINT8 B[sizeof(SID) - sizeof(DWORD) + (1 * sizeof(DWORD))];
+} FspAuthUsersSidBuf =
+{
+    /* S-1-5-11 */
+    .V.Revision = SID_REVISION,
+    .V.SubAuthorityCount = 1,
+    .V.IdentifierAuthority.Value[5] = 5,
+    .V.SubAuthority[0] = 11,
+};
+static union
 {
     SID V;
     UINT8 B[sizeof(SID) - sizeof(DWORD) + (1 * sizeof(DWORD))];
@@ -52,11 +104,15 @@ union
     .V.IdentifierAuthority.Value[5] = 0,
     .V.SubAuthority[0] = 65534,
 };
-static PISID FspAccountDomainSid, FspPrimaryDomainSid;
 
+#define FspWorldSid                     (&FspWorldSidBuf.V)
+#define FspAuthUsersSid                 (&FspAuthUsersSidBuf.V)
 #define FspUnmappedSid                  (&FspUnmappedSidBuf.V)
 #define FspUnmappedUid                  (65534)
 
+static PISID FspAccountDomainSid, FspPrimaryDomainSid;
+static INIT_ONCE FspPosixInitOnce = INIT_ONCE_STATIC_INIT;
+#if !defined(_KERNEL_MODE)
 static BOOL WINAPI FspPosixInitialize(
     PINIT_ONCE InitOnce, PVOID Parameter, PVOID *Context)
 {
@@ -120,9 +176,79 @@ VOID FspPosixFinalize(BOOLEAN Dynamic)
         MemFree(FspPrimaryDomainSid);
     }
 }
+#else
+ULONG NTAPI FspPosixInitialize(
+    PRTL_RUN_ONCE RunOnce, PVOID Parameter, PVOID *Context)
+{
+    static union
+    {
+        SID V;
+        UINT8 B[SECURITY_MAX_SID_SIZE];
+    } FspAccountDomainSidBuf;
+    static union
+    {
+        SID V;
+        UINT8 B[SECURITY_MAX_SID_SIZE];
+    } FspPrimaryDomainSidBuf;
+    UNICODE_STRING Path;
+    UNICODE_STRING Name;
+    union
+    {
+        KEY_VALUE_PARTIAL_INFORMATION V;
+        UINT8 B[FIELD_OFFSET(KEY_VALUE_PARTIAL_INFORMATION, Data) + SECURITY_MAX_SID_SIZE];
+    } Value;
+    ULONG Length;
+    NTSTATUS Result;
+
+    RtlInitUnicodeString(&Path, L"\\Registry\\Machine\\SECURITY\\Policy\\PolAcDmS");
+    RtlZeroMemory(&Name, sizeof Name);
+    Length = sizeof Value;
+    Result = FspRegistryGetValue(&Path, &Name, &Value.V, &Length);
+    if (NT_SUCCESS(Result) && REG_NONE == Value.V.Type &&
+        sizeof(SID) <= Value.V.DataLength && RtlValidSid((PSID)&Value.V.Data))
+    {
+        RtlCopyMemory(&FspAccountDomainSidBuf.V, &Value.V.Data, Value.V.DataLength);
+        FspAccountDomainSid = &FspAccountDomainSidBuf.V;
+    }
+
+    RtlInitUnicodeString(&Path, L"\\Registry\\Machine\\SECURITY\\Policy\\PolPrDmS");
+    RtlZeroMemory(&Name, sizeof Name);
+    Length = sizeof Value;
+    Result = FspRegistryGetValue(&Path, &Name, &Value.V, &Length);
+    if (NT_SUCCESS(Result) && REG_NONE == Value.V.Type &&
+        sizeof(SID) <= Value.V.DataLength && RtlValidSid((PSID)&Value.V.Data))
+    {
+        RtlCopyMemory(&FspPrimaryDomainSidBuf.V, &Value.V.Data, Value.V.DataLength);
+        FspPrimaryDomainSid = &FspPrimaryDomainSidBuf.V;
+    }
+
+    return TRUE;
+}
+#endif
+
+static inline BOOLEAN FspPosixIsRelativeSid(PISID Sid1, PISID Sid2)
+{
+    if (Sid1->Revision != Sid2->Revision)
+        return FALSE;
+    if (Sid1->IdentifierAuthority.Value[0] != Sid2->IdentifierAuthority.Value[0] ||
+        Sid1->IdentifierAuthority.Value[1] != Sid2->IdentifierAuthority.Value[1] ||
+        Sid1->IdentifierAuthority.Value[2] != Sid2->IdentifierAuthority.Value[2] ||
+        Sid1->IdentifierAuthority.Value[3] != Sid2->IdentifierAuthority.Value[3] ||
+        Sid1->IdentifierAuthority.Value[4] != Sid2->IdentifierAuthority.Value[4] ||
+        Sid1->IdentifierAuthority.Value[5] != Sid2->IdentifierAuthority.Value[5])
+        return FALSE;
+    if (Sid1->SubAuthorityCount + 1 != Sid2->SubAuthorityCount)
+        return FALSE;
+    for (ULONG I = 0; Sid1->SubAuthorityCount > I; I++)
+        if (Sid1->SubAuthority[I] != Sid2->SubAuthority[I])
+            return FALSE;
+    return TRUE;
+}
 
 FSP_API NTSTATUS FspPosixMapUidToSid(UINT32 Uid, PSID *PSid)
 {
+    FSP_KU_CODE;
+
     InitOnceExecuteOnce(&FspPosixInitOnce, FspPosixInitialize, 0, 0);
 
     *PSid = 0;
@@ -221,7 +347,7 @@ FSP_API NTSTATUS FspPosixMapUidToSid(UINT32 Uid, PSID *PSid)
      *     S-1-X-Y                             <=> uid/gid: 0x10000 + 0x100 * X + Y
      */
     else if (0x10000 <= Uid && Uid < 0x11000)
-        *PSid = FspPosixCreateSid((Uid - 0x10000) >> 8, 1, (Uid - 0x10000) & 0xff);
+        *PSid = FspPosixCreateSid((BYTE)((Uid - 0x10000) >> 8), 1, (Uid - 0x10000) & 0xff);
 
     /* [IDMAP]
      * Other well-known SIDs in the NT_AUTHORITY domain (S-1-5-X-RID):
@@ -238,13 +364,15 @@ FSP_API NTSTATUS FspPosixMapUidToSid(UINT32 Uid, PSID *PSid)
 
 FSP_API NTSTATUS FspPosixMapSidToUid(PSID Sid, PUINT32 PUid)
 {
+    FSP_KU_CODE;
+
     InitOnceExecuteOnce(&FspPosixInitOnce, FspPosixInitialize, 0, 0);
 
     BYTE Authority;
     BYTE Count;
     UINT32 SubAuthority0, Rid;
 
-    *PUid = -1;
+    *PUid = (UINT32)-1;
 
     if (!IsValidSid(Sid) || 0 == (Count = *GetSidSubAuthorityCount(Sid)))
         return STATUS_INVALID_SID;
@@ -298,12 +426,11 @@ FSP_API NTSTATUS FspPosixMapSidToUid(PSID Sid, PUINT32 PUid)
              * has PrimaryDomainSid == AccountDomainSid.
              */
 
-            BOOL EqualDomains = FALSE;
             if (0 != FspPrimaryDomainSid &&
-                EqualDomainSid(FspPrimaryDomainSid, Sid, &EqualDomains) && EqualDomains)
+                FspPosixIsRelativeSid(FspPrimaryDomainSid, Sid))
                 *PUid = 0x100000 + Rid;
             else if (0 != FspAccountDomainSid &&
-                EqualDomainSid(FspAccountDomainSid, Sid, &EqualDomains) && EqualDomains)
+                FspPosixIsRelativeSid(FspAccountDomainSid, Sid))
                 *PUid = 0x30000 + Rid;
 
             /*
@@ -348,6 +475,8 @@ FSP_API NTSTATUS FspPosixMapSidToUid(PSID Sid, PUINT32 PUid)
 
 static PISID FspPosixCreateSid(BYTE Authority, ULONG Count, ...)
 {
+    FSP_KU_CODE;
+
     PISID Sid;
     SID_IDENTIFIER_AUTHORITY IdentifierAuthority;
     va_list ap;
@@ -370,6 +499,8 @@ static PISID FspPosixCreateSid(BYTE Authority, ULONG Count, ...)
 
 FSP_API VOID FspDeleteSid(PSID Sid, NTSTATUS (*CreateFunc)())
 {
+    FSP_KU_CODE;
+
     if (FspUnmappedSid == Sid)
         ;
     else if ((NTSTATUS (*)())FspPosixMapUidToSid == CreateFunc)
@@ -439,7 +570,9 @@ FSP_API NTSTATUS FspPosixMapPermissionsToSecurityDescriptor(
     UINT32 Uid, UINT32 Gid, UINT32 Mode,
     PSECURITY_DESCRIPTOR *PSecurityDescriptor)
 {
-    PSID OwnerSid = 0, GroupSid = 0, WorldSid = 0;
+    FSP_KU_CODE;
+
+    PSID OwnerSid = 0, GroupSid = 0;
     UINT32 OwnerPerm, OwnerDeny, GroupPerm, GroupDeny, WorldPerm;
     PACL Acl = 0;
     SECURITY_DESCRIPTOR SecurityDescriptor;
@@ -457,13 +590,6 @@ FSP_API NTSTATUS FspPosixMapPermissionsToSecurityDescriptor(
     if (!NT_SUCCESS(Result))
         goto exit;
 
-    WorldSid = FspWksidGet(WinWorldSid);
-    if (0 == WorldSid)
-    {
-        Result = STATUS_INSUFFICIENT_RESOURCES;
-        goto exit;
-    }
-
     OwnerPerm = (Mode & 0700) >> 6;
     GroupPerm = (Mode & 0070) >> 3;
     WorldPerm = (Mode & 0007);
@@ -502,7 +628,7 @@ FSP_API NTSTATUS FspPosixMapPermissionsToSecurityDescriptor(
         sizeof(ACCESS_DENIED_ACE) * (!!OwnerDeny + !!GroupDeny);
     Size += GetLengthSid(OwnerSid) - sizeof(DWORD);
     Size += GetLengthSid(GroupSid) - sizeof(DWORD);
-    Size += GetLengthSid(WorldSid) - sizeof(DWORD);
+    Size += GetLengthSid(FspWorldSid) - sizeof(DWORD);
     if (OwnerDeny)
         Size += GetLengthSid(OwnerSid) - sizeof(DWORD);
     if (GroupDeny)
@@ -546,7 +672,7 @@ FSP_API NTSTATUS FspPosixMapPermissionsToSecurityDescriptor(
 
     if (!AddAccessAllowedAce(Acl, ACL_REVISION,
         FspPosixDefaultPerm | FspPosixMapPermissionToAccessMask(Mode, WorldPerm),
-        WorldSid))
+        FspWorldSid))
         goto lasterror;
 
     if (!InitializeSecurityDescriptor(&SecurityDescriptor, SECURITY_DESCRIPTOR_REVISION))
@@ -621,7 +747,9 @@ FSP_API NTSTATUS FspPosixMapSecurityDescriptorToPermissions(
     PSECURITY_DESCRIPTOR SecurityDescriptor,
     PUINT32 PUid, PUINT32 PGid, PUINT32 PMode)
 {
-    PSID OwnerSid = 0, GroupSid = 0, WorldSid = 0, AuthUsersSid = 0;
+    FSP_KU_CODE;
+
+    PSID OwnerSid = 0, GroupSid = 0;
     BOOL Defaulted, DaclPresent;
     PACL Acl = 0;
     ACL_SIZE_INFORMATION AclSizeInfo;
@@ -653,20 +781,6 @@ FSP_API NTSTATUS FspPosixMapSecurityDescriptorToPermissions(
 
     if (0 != Acl)
     {
-        WorldSid = FspWksidGet(WinWorldSid);
-        if (0 == WorldSid)
-        {
-            Result = STATUS_INSUFFICIENT_RESOURCES;
-            goto exit;
-        }
-
-        AuthUsersSid = FspWksidGet(WinAuthenticatedUserSid);
-        if (0 == AuthUsersSid)
-        {
-            Result = STATUS_INSUFFICIENT_RESOURCES;
-            goto exit;
-        }
-
         OwnerAllow = OwnerDeny = GroupAllow = GroupDeny = WorldAllow = WorldDeny = 0;
 
         if (!GetAclInformation(Acl, &AclSizeInfo, sizeof AclSizeInfo, AclSizeInformation))
@@ -701,7 +815,7 @@ FSP_API NTSTATUS FspPosixMapSecurityDescriptorToPermissions(
              * add the allowed or denied access right bits into the "owner", "group"
              * and "other" collections.
              */
-            if (EqualSid(WorldSid, AceSid) || EqualSid(AuthUsersSid, AceSid))
+            if (EqualSid(FspWorldSid, AceSid) || EqualSid(FspAuthUsersSid, AceSid))
             {
                 /* [PERMS]
                  * If this is an access-denied ACE, then add each access right to the set
@@ -812,6 +926,8 @@ static UINT32 FspPosixInvalidPathChars[4] =
 FSP_API NTSTATUS FspPosixMapWindowsToPosixPathEx(PWSTR WindowsPath, char **PPosixPath,
     BOOLEAN Translate)
 {
+    FSP_KU_CODE;
+
     NTSTATUS Result;
     ULONG Size;
     char *PosixPath = 0, *p, *q;
@@ -874,6 +990,8 @@ lasterror:
 FSP_API NTSTATUS FspPosixMapPosixToWindowsPathEx(const char *PosixPath, PWSTR *PWindowsPath,
     BOOLEAN Translate)
 {
+    FSP_KU_CODE;
+
     NTSTATUS Result;
     ULONG Size;
     PWSTR WindowsPath = 0, p;
@@ -925,11 +1043,15 @@ lasterror:
 
 FSP_API VOID FspPosixDeletePath(void *Path)
 {
+    FSP_KU_CODE;
+
     MemFree(Path);
 }
 
 FSP_API VOID FspPosixEncodeWindowsPath(PWSTR WindowsPath, ULONG Size)
 {
+    FSP_KU_CODE;
+
     for (PWSTR p = WindowsPath, endp = p + Size; endp > p; p++)
     {
         WCHAR c = *p;
@@ -944,6 +1066,8 @@ FSP_API VOID FspPosixEncodeWindowsPath(PWSTR WindowsPath, ULONG Size)
 
 FSP_API VOID FspPosixDecodeWindowsPath(PWSTR WindowsPath, ULONG Size)
 {
+    FSP_KU_CODE;
+
     for (PWSTR p = WindowsPath, endp = p + Size; endp > p; p++)
     {
         WCHAR c = *p;

src/launcher/launcher.c

@@ -503,24 +503,19 @@ static SVC_INSTANCE *SvcInstanceLookup(PWSTR ClassName, PWSTR InstanceName)
     return 0;
 }
 
-static ULONG SvcInstanceArgumentLength(PWSTR Arg)
+static inline ULONG SvcInstanceArgumentLength(PWSTR Arg, PWSTR Pattern)
 {
-    ULONG Length;
+    PWSTR PathTransform(PWSTR Dest, PWSTR Arg, PWSTR Pattern);
 
-    Length = 2; /* for beginning and ending quotes */
-    for (PWSTR P = Arg; *P; P++)
-        if (L'"' != *P)
-            Length++;
-
-    return Length;
+    return 2 + (ULONG)(UINT_PTR)PathTransform(0, Arg, Pattern);
 }
 
-static PWSTR SvcInstanceArgumentCopy(PWSTR Dest, PWSTR Arg)
+static inline PWSTR SvcInstanceArgumentCopy(PWSTR Dest, PWSTR Arg, PWSTR Pattern)
 {
+    PWSTR PathTransform(PWSTR Dest, PWSTR Arg, PWSTR Pattern);
+
     *Dest++ = L'"';
-    for (PWSTR P = Arg; *P; P++)
-        if (L'"' != *P)
-            *Dest++ = *P;
+    Dest = PathTransform(Dest, Arg, Pattern);
     *Dest++ = L'"';
 
     return Dest;
@@ -532,6 +527,7 @@ static NTSTATUS SvcInstanceReplaceArguments(PWSTR String, ULONG Argc, PWSTR *Arg
     PWSTR NewString = 0, P, Q;
     PWSTR EmptyArg = L"";
     ULONG Length;
+    PWSTR Pattern;
 
     *PNewString = 0;
 
@@ -541,24 +537,36 @@ static NTSTATUS SvcInstanceReplaceArguments(PWSTR String, ULONG Argc, PWSTR *Arg
         switch (*P)
         {
         case L'%':
+            Pattern = 0;
             P++;
+            if (L'\\' == *P)
+            {
+                Pattern = ++P;
+                while (!(L'\0' == *P ||
+                    (L'0' <= *P && *P <= '9') ||
+                    (L'A' <= *P && *P <= 'Z')))
+                    P++;
+            }
             if (L'0' <= *P && *P <= '9')
             {
                 if (Argc > (ULONG)(*P - L'0'))
-                    Length += SvcInstanceArgumentLength(Argv[*P - L'0']);
+                    Length += SvcInstanceArgumentLength(Argv[*P - L'0'], Pattern);
                 else
-                    Length += SvcInstanceArgumentLength(EmptyArg);
+                    Length += SvcInstanceArgumentLength(EmptyArg, 0);
             }
             else
             if (L'U' == *P)
             {
                 if (0 != SvcInstanceUserName())
-                    Length += SvcInstanceArgumentLength(SvcInstanceUserName());
+                    Length += SvcInstanceArgumentLength(SvcInstanceUserName(), Pattern);
                 else
-                    Length += SvcInstanceArgumentLength(EmptyArg);
+                    Length += SvcInstanceArgumentLength(EmptyArg, 0);
             }
             else
+            if (*P)
                 Length++;
+            else
+                P--;
             break;
         default:
             Length++;
@@ -575,24 +583,36 @@ static NTSTATUS SvcInstanceReplaceArguments(PWSTR String, ULONG Argc, PWSTR *Arg
         switch (*P)
         {
         case L'%':
+            Pattern = 0;
             P++;
+            if (L'\\' == *P)
+            {
+                Pattern = ++P;
+                while (!(L'\0' == *P ||
+                    (L'0' <= *P && *P <= '9') ||
+                    (L'A' <= *P && *P <= 'Z')))
+                    P++;
+            }
             if (L'0' <= *P && *P <= '9')
             {
                 if (Argc > (ULONG)(*P - L'0'))
-                    Q = SvcInstanceArgumentCopy(Q, Argv[*P - L'0']);
+                    Q = SvcInstanceArgumentCopy(Q, Argv[*P - L'0'], Pattern);
                 else
-                    Q = SvcInstanceArgumentCopy(Q, EmptyArg);
+                    Q = SvcInstanceArgumentCopy(Q, EmptyArg, 0);
             }
             else
             if (L'U' == *P)
             {
                 if (0 != SvcInstanceUserName())
-                    Q = SvcInstanceArgumentCopy(Q, SvcInstanceUserName());
+                    Q = SvcInstanceArgumentCopy(Q, SvcInstanceUserName(), Pattern);
                 else
-                    Q = SvcInstanceArgumentCopy(Q, EmptyArg);
+                    Q = SvcInstanceArgumentCopy(Q, EmptyArg, 0);
             }
             else
+            if (*P)
                 *Q++ = *P;
+            else
+                P--;
             break;
         default:
             *Q++ = *P;

src/launcher/ptrans.c

@@ -0,0 +1,182 @@
+/**
+ * @file launcher/ptrans.c
+ *
+ * @copyright 2015-2019 Bill Zissimopoulos
+ */
+/*
+ * This file is part of WinFsp.
+ *
+ * You can redistribute it and/or modify it under the terms of the GNU
+ * General Public License version 3 as published by the Free Software
+ * Foundation.
+ *
+ * Licensees holding a valid commercial license may use this software
+ * in accordance with the commercial license agreement provided in
+ * conjunction with the software.  The terms and conditions of any such
+ * commercial license agreement shall govern, supersede, and render
+ * ineffective any application of the GPLv3 license to this software,
+ * notwithstanding of any reference thereto in the software or
+ * associated repository.
+ */
+
+/**
+ * Path Transformation Language
+ *
+ * Syntax:
+ *     PERCENT BACKLASH replace-sep *(*sep component) [*sep UNDERSCORE] arg
+ *
+ * Arg:
+ *     The command line argument that a rule is applied on. These are denoted
+ *     by digits [0-9] or a capital letter (A-Z).
+ *
+ * Component:
+ *     A path component denoted by a small letter (a-z). The letter a denotes
+ *     the first path component, the letter b the second path component, etc.
+ *
+ * UNDERSCORE:
+ *     The UNDERSCORE (_) denotes the "rest of the path". This is any path
+ *     left after any path components explicitly mentioned by using small
+ *     letters (a-z).
+ *
+ * Sep:
+ *     A separator symbol that is used to separated components.
+ *     E.g. slash (/), colon (:), etc.
+ *
+ * Replace-sep:
+ *     A separator symbol that replaces the backslash (\) separator in the
+ *     "rest of the path" (UNDERSCORE). E.g. slash (/), colon (:), etc.
+ *
+ *
+ * Examples:
+ *     - %\/b:_1
+ *         - Transforms \rclone\REMOTE\PATH\TO\FILES to REMOTE:PATH/TO/FILES
+ *     - %\/b:/_1
+ *         - Transforms \rclone\REMOTE\PATH\TO\FILES to REMOTE:/PATH/TO/FILES
+ *     - %\/_1
+ *         - Transforms \P1\P2\P3 to /P1/P2/P3
+ *     - %\+_1
+ *         - Transforms \P1\P2\P3 to +P1+P2+P3
+ *     - %\\_1
+ *         - Transforms \P1\P2\P3 to \\P1\\P2\\P3
+ *         (Backslash is doubled up when used as a replacement separator!)
+ */
+
+#include <winfsp/launch.h>
+#include <shared/minimal.h>
+
+static PWSTR PathCopy(PWSTR Dest, PWSTR Arg, PWSTR ArgEnd, BOOLEAN WriteDest, WCHAR Replacement)
+{
+    if (0 != Replacement)
+    {
+        for (PWSTR P = Arg, EndP = (0 != ArgEnd ? ArgEnd : (PWSTR)(UINT_PTR)~0); EndP > P && *P; P++)
+            if (L'\\' == *P)
+            {
+                if (L'\\' == Replacement)
+                {
+                    if (WriteDest)
+                        *Dest = Replacement;
+                    Dest++;
+                }
+
+                if (WriteDest)
+                    *Dest = Replacement;
+                Dest++;
+            }
+            else if (L'"' != *P)
+            {
+                if (WriteDest)
+                    *Dest = *P;
+                Dest++;
+            }
+    }
+    else
+    {
+        for (PWSTR P = Arg, EndP = (0 != ArgEnd ? ArgEnd : (PWSTR)(UINT_PTR)~0); EndP > P && *P; P++)
+            if (L'"' != *P)
+            {
+                if (WriteDest)
+                    *Dest = *P;
+                Dest++;
+            }
+    }
+
+    return Dest;
+}
+
+static inline BOOLEAN PatternEnd(WCHAR C)
+{
+    return L'\0' == C ||
+        (L'0' <= C && C <= '9') ||
+        (L'A' <= C && C <= 'Z');
+}
+
+PWSTR PathTransform(PWSTR Dest, PWSTR Arg, PWSTR Pattern)
+{
+    BOOLEAN WriteDest = 0 != Dest;
+    WCHAR Replacement;
+    PWSTR Components[26][2];
+    PWSTR Remainder = Arg;
+    ULONG RemainderIndex = 0;
+    PWSTR P;
+
+    if (0 == Pattern)
+        return PathCopy(Dest, Arg, 0, WriteDest, 0);
+
+    for (ULONG I = 0; 26 > I; I++)
+        Components[I][0] = 0;
+
+    Replacement = *Pattern++;
+    if (PatternEnd(Replacement))
+        return Dest;
+
+    while (!PatternEnd(*Pattern))
+    {
+        if (L'a' <= *Pattern && *Pattern <= 'z')
+        {
+            ULONG I = *Pattern - 'a', J;
+            if (0 == Components[I][0])
+            {
+                P = Remainder;
+                J = RemainderIndex;
+
+                while (L'\\' == *P)
+                    P++;
+
+                for (;;)
+                {
+                    Components[J][0] = P;
+                    while (*P && L'\\' != *P)
+                        P++;
+                    Components[J][1] = P;
+
+                    while (L'\\' == *P)
+                        P++;
+
+                    if (I == J)
+                    {
+                        Remainder = P;
+                        RemainderIndex = I + 1;
+                        break;
+                    }
+
+                    J++;
+                }
+            }
+
+            Dest = PathCopy(Dest, Components[I][0], Components[I][1], WriteDest, Replacement);
+        }
+        else
+        if (L'_' == *Pattern)
+            Dest = PathCopy(Dest, Remainder, 0, WriteDest, Replacement);
+        else
+        {
+            if (WriteDest)
+                *Dest = *Pattern;
+            Dest++;
+        }
+
+        Pattern++;
+    }
+
+    return Dest;
+}

src/shared/minimal.h

@@ -72,6 +72,7 @@ NTSYSAPI VOID NTAPI RtlMoveMemory(VOID *Destination, CONST VOID *Source, DWORD L
 
 #pragma function(memset)
 #pragma function(memcpy)
+#pragma function(memmove)
 static inline
 void *memset(void *dst, int val, size_t siz)
 {

src/sys/create.c

@@ -29,7 +29,7 @@ static NTSTATUS FspFsvolCreate(
     PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
 static NTSTATUS FspFsvolCreateNoLock(
     PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp,
-    BOOLEAN MainFileOpen);
+    BOOLEAN MainFileOpen, PFSP_ATOMIC_CREATE_ECP_CONTEXT AtomicCreateEcp);
 FSP_IOPREP_DISPATCH FspFsvolCreatePrepare;
 FSP_IOCMPL_DISPATCH FspFsvolCreateComplete;
 static NTSTATUS FspFsvolCreateTryOpen(PIRP Irp, const FSP_FSCTL_TRANSACT_RSP *Response,
@@ -144,6 +144,7 @@ static NTSTATUS FspFsvolCreate(
     PECP_LIST ExtraCreateParameters;
     PVOID ExtraCreateParameter;
     BOOLEAN MainFileOpen = FALSE;
+    PFSP_ATOMIC_CREATE_ECP_CONTEXT AtomicCreateEcp = 0;
 
     /*
      * Check if the IRP has ECP's.
@@ -219,6 +220,21 @@ static NTSTATUS FspFsvolCreate(
             }
         }
 #endif
+
+        if (FspFsvolDeviceExtension(FsvolDeviceObject)->VolumeParams.WslFeatures)
+        {
+            // {4720bd83-52ac-4104-a130-d1ec6a8cc8e5}
+            static const GUID FspAtomicCreateEcpGuid =
+                { 0x4720bd83, 0x52ac, 0x4104, { 0xa1, 0x30, 0xd1, 0xec, 0x6a, 0x8c, 0xc8, 0xe5 } };
+
+            ExtraCreateParameter = 0;
+            AtomicCreateEcp =
+                NT_SUCCESS(FsRtlFindExtraCreateParameter(ExtraCreateParameters,
+                    &FspAtomicCreateEcpGuid, &ExtraCreateParameter, 0)) &&
+                0 != ExtraCreateParameter &&
+                !FsRtlIsEcpFromUserMode(ExtraCreateParameter) ?
+                    ExtraCreateParameter : 0;
+        }
     }
 
     if (!MainFileOpen)
@@ -226,7 +242,8 @@ static NTSTATUS FspFsvolCreate(
         FspFsvolDeviceFileRenameAcquireShared(FsvolDeviceObject);
         try
         {
-            Result = FspFsvolCreateNoLock(FsvolDeviceObject, Irp, IrpSp, FALSE);
+            Result = FspFsvolCreateNoLock(FsvolDeviceObject, Irp, IrpSp,
+                MainFileOpen, AtomicCreateEcp);
         }
         finally
         {
@@ -235,14 +252,15 @@ static NTSTATUS FspFsvolCreate(
         }
     }
     else
-        Result = FspFsvolCreateNoLock(FsvolDeviceObject, Irp, IrpSp, TRUE);
+        Result = FspFsvolCreateNoLock(FsvolDeviceObject, Irp, IrpSp,
+            MainFileOpen, AtomicCreateEcp);
 
     return Result;
 }
 
 static NTSTATUS FspFsvolCreateNoLock(
     PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp,
-    BOOLEAN MainFileOpen)
+    BOOLEAN MainFileOpen, PFSP_ATOMIC_CREATE_ECP_CONTEXT AtomicCreateEcp)
 {
     PAGED_CODE();
 
@@ -279,6 +297,8 @@ static NTSTATUS FspFsvolCreateNoLock(
     USHORT ShareAccess = IrpSp->Parameters.Create.ShareAccess;
     PFILE_FULL_EA_INFORMATION EaBuffer = Irp->AssociatedIrp.SystemBuffer;
     ULONG EaLength = IrpSp->Parameters.Create.EaLength;
+    PVOID ExtraBuffer = 0;
+    ULONG ExtraLength = 0;
     ULONG Flags = IrpSp->Flags;
     KPROCESSOR_MODE RequestorMode =
         FlagOn(Flags, SL_FORCE_ACCESS_CHECK) ? UserMode : Irp->RequestorMode;
@@ -292,6 +312,7 @@ static NTSTATUS FspFsvolCreateNoLock(
     BOOLEAN HasRestorePrivilege =
         BooleanFlagOn(AccessState->Flags, TOKEN_HAS_RESTORE_PRIVILEGE);
     BOOLEAN HasTrailingBackslash = FALSE;
+    BOOLEAN EaIsReparsePoint = FALSE;
     FSP_FILE_NODE *FileNode, *RelatedFileNode;
     FSP_FILE_DESC *FileDesc;
     UNICODE_STRING MainFileName = { 0 }, StreamPart = { 0 };
@@ -302,6 +323,36 @@ static NTSTATUS FspFsvolCreateNoLock(
     if (FlagOn(CreateOptions, FILE_OPEN_BY_FILE_ID))
         return STATUS_NOT_IMPLEMENTED;
 
+    /* is there an AtomicCreateEcp attached? */
+    if (0 != AtomicCreateEcp)
+    {
+        if ((FILE_CREATE != CreateDisposition && FILE_OPEN_IF != CreateDisposition) ||
+            0 != EaBuffer ||
+            RTL_SIZEOF_THROUGH_FIELD(FSP_ATOMIC_CREATE_ECP_CONTEXT, ReparseBuffer) >
+                AtomicCreateEcp->Size ||
+            /* !!!: revisit: FlagOn*/
+            !FlagOn(AtomicCreateEcp->InFlags,
+                ATOMIC_CREATE_ECP_IN_FLAG_BEST_EFFORT |
+                ATOMIC_CREATE_ECP_IN_FLAG_REPARSE_POINT_SPECIFIED))
+            return STATUS_INVALID_PARAMETER; /* docs do not say what to return on failure! */
+
+        if (FlagOn(AtomicCreateEcp->InFlags,
+            ATOMIC_CREATE_ECP_IN_FLAG_REPARSE_POINT_SPECIFIED))
+        {
+            Result = FsRtlValidateReparsePointBuffer(AtomicCreateEcp->ReparseBufferLength,
+                AtomicCreateEcp->ReparseBuffer);
+            if (!NT_SUCCESS(Result))
+                return Result;
+
+            /* mark that we satisfied the reparse point request, although we may fail it later! */
+            AtomicCreateEcp->OutFlags = ATOMIC_CREATE_ECP_OUT_FLAG_REPARSE_POINT_SET;
+
+            ExtraBuffer = AtomicCreateEcp->ReparseBuffer;
+            ExtraLength = AtomicCreateEcp->ReparseBufferLength;
+            EaIsReparsePoint = TRUE;
+        }
+    }
+
     /* was an EA buffer specified? */
     if (0 != EaBuffer)
     {
@@ -318,6 +369,9 @@ static NTSTATUS FspFsvolCreateNoLock(
             EaBuffer, EaLength, (PULONG)&Irp->IoStatus.Information);
         if (!NT_SUCCESS(Result))
             return Result;
+
+        ExtraBuffer = EaBuffer;
+        ExtraLength = EaLength;
     }
 
     /* cannot open a paging file */
@@ -555,9 +609,9 @@ static NTSTATUS FspFsvolCreateNoLock(
         SecurityDescriptorSize = 0;
         FileAttributes = 0;
 
-        /* cannot set EA on named stream */
-        EaBuffer = 0;
-        EaLength = 0;
+        /* cannot set extra buffer on named stream */
+        ExtraBuffer = 0;
+        ExtraLength = 0;
 
         /* remember the main file node */
         ASSERT(0 == FileNode->MainFileNode);
@@ -577,8 +631,8 @@ static NTSTATUS FspFsvolCreateNoLock(
 
     /* create the user-mode file system request */
     Result = FspIopCreateRequestEx(Irp, &FileNode->FileName,
-        0 != EaBuffer ?
-            FSP_FSCTL_DEFAULT_ALIGN_UP(SecurityDescriptorSize) + EaLength : SecurityDescriptorSize,
+        0 != ExtraBuffer ?
+            FSP_FSCTL_DEFAULT_ALIGN_UP(SecurityDescriptorSize) + ExtraLength : SecurityDescriptorSize,
         FspFsvolCreateRequestFini, &Request);
     if (!NT_SUCCESS(Result))
     {
@@ -616,10 +670,10 @@ static NTSTATUS FspFsvolCreateNoLock(
     Request->Req.Create.DesiredAccess = DesiredAccess;
     Request->Req.Create.GrantedAccess = GrantedAccess;
     Request->Req.Create.ShareAccess = ShareAccess;
-    Request->Req.Create.Ea.Offset = 0 != EaBuffer ?
+    Request->Req.Create.Ea.Offset = 0 != ExtraBuffer ?
         (0 != Request->Req.Create.SecurityDescriptor.Offset ?
             NEXTOFS(Request->Req.Create.SecurityDescriptor) : NEXTOFS(Request->FileName)) : 0;
-    Request->Req.Create.Ea.Size = 0 != EaBuffer ? (UINT16)EaLength : 0;
+    Request->Req.Create.Ea.Size = 0 != ExtraBuffer ? (UINT16)ExtraLength : 0;
     Request->Req.Create.UserMode = UserMode == RequestorMode;
     Request->Req.Create.HasTraversePrivilege = HasTraversePrivilege;
     Request->Req.Create.HasBackupPrivilege = HasBackupPrivilege;
@@ -628,10 +682,10 @@ static NTSTATUS FspFsvolCreateNoLock(
     Request->Req.Create.CaseSensitive = CaseSensitive;
     Request->Req.Create.HasTrailingBackslash = HasTrailingBackslash;
     Request->Req.Create.NamedStream = MainFileName.Length;
-#undef NEXTOFS
-
     Request->Req.Create.AcceptsSecurityDescriptor = 0 == Request->Req.Create.NamedStream &&
         !!FsvolDeviceExtension->VolumeParams.AllowOpenInKernelMode;
+    Request->Req.Create.EaIsReparsePoint = EaIsReparsePoint;
+#undef NEXTOFS
 
     ASSERT(
         0 == StreamPart.Length && 0 == MainFileName.Length ||
@@ -642,10 +696,10 @@ static NTSTATUS FspFsvolCreateNoLock(
         RtlCopyMemory(Request->Buffer + Request->Req.Create.SecurityDescriptor.Offset,
             SecurityDescriptor, SecurityDescriptorSize);
 
-    /* copy the EA buffer (if any) into the request */
-    if (0 != EaBuffer)
+    /* copy the extra buffer (if any) into the request */
+    if (0 != ExtraBuffer)
         RtlCopyMemory(Request->Buffer + Request->Req.Create.Ea.Offset,
-            EaBuffer, EaLength);
+            ExtraBuffer, ExtraLength);
 
     /* fix FileNode->FileName if we are doing SL_OPEN_TARGET_DIRECTORY */
     if (Request->Req.Create.OpenTargetDirectory)

src/sys/debug.c

@@ -252,6 +252,8 @@ const char *FileInformationClassSym(FILE_INFORMATION_CLASS FileInformationClass)
     SYM(FileReplaceCompletionInformation)
     SYM(FileHardLinkFullIdInformation)
     SYM(FileIdExtdBothDirectoryInformation)
+    case 68: return "FileStatInformation";
+    case 70: return "FileStatLxInformation";
     default:
         return "FILE_INFORMATION_CLASS:Unknown";
     }

src/sys/device.c

@@ -325,6 +325,22 @@ static NTSTATUS FspFsvolDeviceInit(PDEVICE_OBJECT DeviceObject)
      * to track what has been initialized!
      */
 
+    /* initialize any fsext provider */
+    if (0 != FsvolDeviceExtension->VolumeParams.FsextControlCode)
+    {
+        FSP_FSEXT_PROVIDER *Provider = FspFsextProvider(
+            FsvolDeviceExtension->VolumeParams.FsextControlCode, 0);
+        if (0 != Provider)
+        {
+            Result = Provider->DeviceInit(DeviceObject, &FsvolDeviceExtension->VolumeParams);
+            if (!NT_SUCCESS(Result))
+                return Result;
+            FsvolDeviceExtension->InitDoneFsext = 1;
+        }
+        else
+            return STATUS_OBJECT_NAME_NOT_FOUND;
+    }
+
     /* is there a virtual disk? */
     if (0 != FsvolDeviceExtension->FsvrtDeviceObject)
     {
@@ -500,6 +516,15 @@ static VOID FspFsvolDeviceFini(PDEVICE_OBJECT DeviceObject)
         if (0 != FsvolDeviceExtension->SwapVpb)
             FspFreeExternal(FsvolDeviceExtension->SwapVpb);
     }
+
+    /* finalize any fsext provider */
+    if (FsvolDeviceExtension->InitDoneFsext)
+    {
+        FSP_FSEXT_PROVIDER *Provider = FspFsextProvider(
+            FsvolDeviceExtension->VolumeParams.FsextControlCode, 0);
+        if (0 != Provider)
+            Provider->DeviceFini(DeviceObject);
+    }
 }
 
 static VOID FspFsvolDeviceTimerRoutine(PDEVICE_OBJECT DeviceObject, PVOID Context)
@@ -546,6 +571,14 @@ static VOID FspFsvolDeviceExpirationRoutine(PVOID Context)
     FspMetaCacheInvalidateExpired(FsvolDeviceExtension->SecurityCache, InterruptTime);
     FspMetaCacheInvalidateExpired(FsvolDeviceExtension->DirInfoCache, InterruptTime);
     FspMetaCacheInvalidateExpired(FsvolDeviceExtension->StreamInfoCache, InterruptTime);
+    /* run any fsext provider expiration routine */
+    if (0 != FsvolDeviceExtension->VolumeParams.FsextControlCode)
+    {
+        FSP_FSEXT_PROVIDER *Provider = FspFsextProvider(
+            FsvolDeviceExtension->VolumeParams.FsextControlCode, 0);
+        if (0 != Provider)
+            Provider->DeviceExpirationRoutine(DeviceObject, InterruptTime);
+    }
     FspIoqRemoveExpired(FsvolDeviceExtension->Ioq, InterruptTime);
 
     KeAcquireSpinLock(&FsvolDeviceExtension->ExpirationLock, &Irql);

src/sys/driver.h

@@ -29,6 +29,7 @@
 #include <ntstrsafe.h>
 #include <wdmsec.h>
 #include <winfsp/fsctl.h>
+#include <winfsp/fsext.h>
 
 /* disable warnings */
 #pragma warning(disable:4100)           /* unreferenced formal parameter */
@@ -36,6 +37,12 @@
 
 #define DRIVER_NAME                     FSP_FSCTL_DRIVER_NAME
 
+#if _WIN64
+#define FSP_REGKEY                      "\\Registry\\Machine\\Software\\WOW6432Node\\WinFsp"
+#else
+#define FSP_REGKEY                      "\\Registry\\Machine\\Software\\WinFsp"
+#endif
+
 /* IoCreateDeviceSecure default SDDL's */
 #define FSP_FSCTL_DEVICE_SDDL           "D:P(A;;GA;;;SY)(A;;GA;;;BA)(A;;GR;;;WD)"
     /* System:GENERIC_ALL, Administrators:GENERIC_ALL, World:GENERIC_READ */
@@ -492,8 +499,17 @@ PVOID FspAllocateIrpMustSucceed(CCHAR StackSize);
 NTSTATUS FspCreateGuid(GUID *Guid);
 NTSTATUS FspGetDeviceObjectPointer(PUNICODE_STRING ObjectName, ACCESS_MASK DesiredAccess,
     PULONG PFileNameIndex, PFILE_OBJECT *PFileObject, PDEVICE_OBJECT *PDeviceObject);
+NTSTATUS FspRegistryGetValue(PUNICODE_STRING Path, PUNICODE_STRING ValueName,
+    PKEY_VALUE_PARTIAL_INFORMATION ValueInformation, PULONG PValueInformationLength);
 NTSTATUS FspSendSetInformationIrp(PDEVICE_OBJECT DeviceObject, PFILE_OBJECT FileObject,
     FILE_INFORMATION_CLASS FileInformationClass, PVOID FileInformation, ULONG Length);
+NTSTATUS FspSendQuerySecurityIrp(PDEVICE_OBJECT DeviceObject, PFILE_OBJECT FileObject,
+    SECURITY_INFORMATION SecurityInformation,
+    PSECURITY_DESCRIPTOR SecurityDescriptor,
+    PULONG PLength);
+NTSTATUS FspSendQueryEaIrp(PDEVICE_OBJECT DeviceObject, PFILE_OBJECT FileObject,
+    PFILE_GET_EA_INFORMATION GetEa, ULONG GetEaLength,
+    PFILE_FULL_EA_INFORMATION Ea, PULONG PEaLength);
 NTSTATUS FspBufferUserBuffer(PIRP Irp, ULONG Length, LOCK_OPERATION Operation);
 NTSTATUS FspLockUserBuffer(PIRP Irp, ULONG Length, LOCK_OPERATION Operation);
 NTSTATUS FspMapLockedPagesInUserMode(PMDL Mdl, PVOID *PAddress, ULONG ExtraPriorityFlags);
@@ -1048,7 +1064,8 @@ typedef struct
 {
     FSP_DEVICE_EXTENSION Base;
     UINT32 InitDoneFsvrt:1, InitDoneIoq:1, InitDoneSec:1, InitDoneDir:1, InitDoneStrm:1, InitDoneEa:1,
-        InitDoneCtxTab:1, InitDoneTimer:1, InitDoneInfo:1, InitDoneNotify:1, InitDoneStat:1;
+        InitDoneCtxTab:1, InitDoneTimer:1, InitDoneInfo:1, InitDoneNotify:1, InitDoneStat:1,
+        InitDoneFsext;
     PDEVICE_OBJECT FsctlDeviceObject;
     PDEVICE_OBJECT FsvrtDeviceObject;
     PDEVICE_OBJECT FsvolDeviceObject;
@@ -1078,6 +1095,7 @@ typedef struct
     PNOTIFY_SYNC NotifySync;
     LIST_ENTRY NotifyList;
     FSP_STATISTICS *Statistics;
+    FSP_FSCTL_DECLSPEC_ALIGN UINT8 FsextData[];
 } FSP_FSVOL_DEVICE_EXTENSION;
 typedef struct
 {
@@ -1169,6 +1187,9 @@ VOID FspDeviceGlobalUnlock(VOID)
     //(FILE_DEVICE_DISK_FILE_SYSTEM == (DeviceObject)->DeviceType ?\
     //    STATUS_VOLUME_DISMOUNTED : STATUS_DEVICE_NOT_CONNECTED)
 
+/* fsext */
+FSP_FSEXT_PROVIDER *FspFsextProvider(UINT32 FsextControlCode, PNTSTATUS PLoadResult);
+
 /* process buffers conditional usage */
 static inline
 BOOLEAN FspReadIrpShouldUseProcessBuffer(PIRP Irp, SIZE_T BufferSize)
@@ -1209,7 +1230,6 @@ NTSTATUS FspMupHandleIrp(
     PDEVICE_OBJECT FsmupDeviceObject, PIRP Irp);
 
 /* volume management */
-#define FspVolumeTransactEarlyTimeout   (1 * 10000ULL)
 NTSTATUS FspVolumeCreate(
     PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
 VOID FspVolumeDelete(
@@ -1222,6 +1242,8 @@ NTSTATUS FspVolumeGetNameList(
     PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
 NTSTATUS FspVolumeTransact(
     PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
+NTSTATUS FspVolumeTransactFsext(
+    PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
 NTSTATUS FspVolumeStop(
     PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
 NTSTATUS FspVolumeWork(
@@ -1571,7 +1593,7 @@ NTSTATUS FspFileNodeOplockCheckAsyncEx(
         CompletionRoutine,
         PostIrpRoutine);
 #if DBG
-    if (STATUS_SUCCESS == Result && DEBUGTEST(10))
+    if (DEBUGTEST_EX(STATUS_SUCCESS == Result, 10, FALSE))
     {
         Irp->IoStatus.Status = STATUS_SUCCESS;
         Irp->IoStatus.Information = 0;
@@ -1636,4 +1658,74 @@ LOGICAL RtlEqualMemory(const VOID *Source1, const VOID *Source2, SIZE_T Length)
     return Length == RtlCompareMemory(Source1, Source2, Length);
 }
 
+/* FILE_STAT_INFORMATION and FILE_STAT_LX_INFORMATION are missings on some WDK's. */
+typedef struct
+{
+    LARGE_INTEGER FileId;
+    LARGE_INTEGER CreationTime;
+    LARGE_INTEGER LastAccessTime;
+    LARGE_INTEGER LastWriteTime;
+    LARGE_INTEGER ChangeTime;
+    LARGE_INTEGER AllocationSize;
+    LARGE_INTEGER EndOfFile;
+    ULONG FileAttributes;
+    ULONG ReparseTag;
+    ULONG NumberOfLinks;
+    ACCESS_MASK EffectiveAccess;
+} FSP_FILE_STAT_INFORMATION, *PFSP_FILE_STAT_INFORMATION;
+typedef struct
+{
+    LARGE_INTEGER FileId;
+    LARGE_INTEGER CreationTime;
+    LARGE_INTEGER LastAccessTime;
+    LARGE_INTEGER LastWriteTime;
+    LARGE_INTEGER ChangeTime;
+    LARGE_INTEGER AllocationSize;
+    LARGE_INTEGER EndOfFile;
+    ULONG FileAttributes;
+    ULONG ReparseTag;
+    ULONG NumberOfLinks;
+    ACCESS_MASK EffectiveAccess;
+    ULONG LxFlags;
+    ULONG LxUid;
+    ULONG LxGid;
+    ULONG LxMode;
+    ULONG LxDeviceIdMajor;
+    ULONG LxDeviceIdMinor;
+} FSP_FILE_STAT_LX_INFORMATION, *PFSP_FILE_STAT_LX_INFORMATION;
+
+/* ATOMIC_CREATE_ECP_CONTEXT is missing on some WDK's */
+#define ATOMIC_CREATE_ECP_IN_FLAG_REPARSE_POINT_SPECIFIED   0x0002
+#define ATOMIC_CREATE_ECP_OUT_FLAG_REPARSE_POINT_SET        0x0002
+#define ATOMIC_CREATE_ECP_IN_FLAG_BEST_EFFORT               0x0100
+typedef struct
+{
+    LARGE_INTEGER CreationTime;
+    LARGE_INTEGER LastAccessTime;
+    LARGE_INTEGER LastWriteTime;
+    LARGE_INTEGER ChangeTime;
+} FSP_FILE_TIMESTAMPS, *PFSP_FILE_TIMESTAMPS;
+typedef struct
+{
+    USHORT Size;
+    USHORT InFlags;
+    USHORT OutFlags;
+    USHORT ReparseBufferLength;
+    PREPARSE_DATA_BUFFER ReparseBuffer;
+    LONGLONG FileSize;
+    LONGLONG ValidDataLength;
+    PFSP_FILE_TIMESTAMPS FileTimestamps;
+    ULONG FileAttributes;
+    ULONG UsnSourceInfo;
+    USN Usn;
+    ULONG SuppressFileAttributeInheritanceMask;
+    ULONG InOpFlags;
+    ULONG OutOpFlags;
+    ULONG InGenFlags;
+    ULONG OutGenFlags;
+    ULONG CaseSensitiveFlagsMask;
+    ULONG InCaseSensitiveFlags;
+    ULONG OutCaseSensitiveFlags;
+} FSP_ATOMIC_CREATE_ECP_CONTEXT, *PFSP_ATOMIC_CREATE_ECP_CONTEXT;
+
 #endif

src/sys/ea.c

@@ -55,6 +55,7 @@ FSP_DRIVER_DISPATCH FspSetEa;
 #ifdef ALLOC_PRAGMA
 #pragma alloc_text(PAGE, FspFsvolQueryEaGetCopy)
 #pragma alloc_text(PAGE, FspFsvolQueryEaIndexCopy)
+#pragma alloc_text(PAGE, FspFsvolQueryEaCopy)
 #pragma alloc_text(PAGE, FspFsvolQueryEa)
 #pragma alloc_text(PAGE, FspFsvolQueryEaComplete)
 #pragma alloc_text(PAGE, FspFsvolQueryEaRequestFini)

src/sys/fileinfo.c

@@ -45,6 +45,15 @@ static NTSTATUS FspFsvolQueryPositionInformation(PFILE_OBJECT FileObject,
 static NTSTATUS FspFsvolQueryStandardInformation(PFILE_OBJECT FileObject,
     PVOID *PBuffer, PVOID BufferEnd,
     const FSP_FSCTL_FILE_INFO *FileInfo);
+static NTSTATUS FspFsvolQueryStatBaseInformation(PFILE_OBJECT FileObject,
+    PVOID *PBuffer, PVOID BufferEnd,
+    const FSP_FSCTL_FILE_INFO *FileInfo);
+static NTSTATUS FspFsvolQueryStatLxBaseInformation(PFILE_OBJECT FileObject,
+    PVOID *PBuffer, PVOID BufferEnd,
+    const FSP_FSCTL_FILE_INFO *FileInfo);
+static NTSTATUS FspFsvolQueryStatLxEaInformation(
+    PDEVICE_OBJECT FsvolDeviceObject, PFILE_OBJECT FileObject,
+    PVOID *PBuffer, PVOID BufferEnd);
 static NTSTATUS FspFsvolQueryStreamInformationCopy(
     FSP_FSCTL_STREAM_INFO *StreamInfoBuffer, ULONG StreamInfoBufferSize,
     PVOID DestBuf, PULONG PDestLen);
@@ -52,6 +61,9 @@ static NTSTATUS FspFsvolQueryStreamInformation(
     PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
 static NTSTATUS FspFsvolQueryStreamInformationSuccess(
     PIRP Irp, const FSP_FSCTL_TRANSACT_RSP *Response);
+static NTSTATUS FspFsvolQueryInformationEffectiveAccess(
+    PDEVICE_OBJECT FsvolDeviceObject, PFILE_OBJECT FileObject,
+    PACCESS_MASK PEffectiveAccess);
 static NTSTATUS FspFsvolQueryInformation(
     PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
 FSP_IOCMPL_DISPATCH FspFsvolQueryInformationComplete;
@@ -97,9 +109,13 @@ FAST_IO_QUERY_OPEN FspFastIoQueryOpen;
 #pragma alloc_text(PAGE, FspFsvolQueryNetworkOpenInformation)
 #pragma alloc_text(PAGE, FspFsvolQueryPositionInformation)
 #pragma alloc_text(PAGE, FspFsvolQueryStandardInformation)
+#pragma alloc_text(PAGE, FspFsvolQueryStatBaseInformation)
+#pragma alloc_text(PAGE, FspFsvolQueryStatLxBaseInformation)
+#pragma alloc_text(PAGE, FspFsvolQueryStatLxEaInformation)
 #pragma alloc_text(PAGE, FspFsvolQueryStreamInformationCopy)
 #pragma alloc_text(PAGE, FspFsvolQueryStreamInformation)
 #pragma alloc_text(PAGE, FspFsvolQueryStreamInformationSuccess)
+#pragma alloc_text(PAGE, FspFsvolQueryInformationEffectiveAccess)
 #pragma alloc_text(PAGE, FspFsvolQueryInformation)
 #pragma alloc_text(PAGE, FspFsvolQueryInformationComplete)
 #pragma alloc_text(PAGE, FspFsvolQueryInformationRequestFini)
@@ -301,7 +317,7 @@ static NTSTATUS FspFsvolQueryNameInformation(PFILE_OBJECT FileObject,
     PDEVICE_OBJECT FsvolDeviceObject = FileNode->FsvolDeviceObject;
     FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension = FspFsvolDeviceExtension(FsvolDeviceObject);
 
-    if ((PVOID)(Info + 1) > BufferEnd)
+    if ((PVOID)((PUINT8)Info + FIELD_OFFSET(FILE_NAME_INFORMATION, FileName)) > BufferEnd)
         return STATUS_BUFFER_TOO_SMALL;
 
     FspFileNodeAcquireShared(FileNode, Main);
@@ -417,6 +433,187 @@ static NTSTATUS FspFsvolQueryStandardInformation(PFILE_OBJECT FileObject,
     return STATUS_SUCCESS;
 }
 
+static NTSTATUS FspFsvolQueryStatBaseInformation(PFILE_OBJECT FileObject,
+    PVOID *PBuffer, PVOID BufferEnd,
+    const FSP_FSCTL_FILE_INFO *FileInfo)
+{
+    PAGED_CODE();
+
+    PFSP_FILE_STAT_INFORMATION Info = (PFSP_FILE_STAT_INFORMATION)*PBuffer;
+    FSP_FILE_NODE *FileNode = FileObject->FsContext;
+
+    if (0 == FileInfo)
+    {
+        if ((PVOID)(Info + 1) > BufferEnd)
+            return STATUS_BUFFER_TOO_SMALL;
+
+        return STATUS_SUCCESS;
+    }
+
+    Info->FileId.QuadPart = FileNode->IndexNumber;
+    Info->CreationTime.QuadPart = FileInfo->CreationTime;
+    Info->LastAccessTime.QuadPart = FileInfo->LastAccessTime;
+    Info->LastWriteTime.QuadPart = FileInfo->LastWriteTime;
+    Info->ChangeTime.QuadPart = FileInfo->ChangeTime;
+    Info->AllocationSize.QuadPart = FileInfo->AllocationSize;
+    Info->EndOfFile.QuadPart = FileInfo->FileSize;
+    Info->FileAttributes = 0 != FileInfo->FileAttributes ?
+        FileInfo->FileAttributes : FILE_ATTRIBUTE_NORMAL;
+    Info->ReparseTag = FileInfo->ReparseTag;
+    Info->NumberOfLinks = 1;
+
+    *PBuffer = (PVOID)(Info + 1);
+
+    return STATUS_SUCCESS;
+}
+
+static NTSTATUS FspFsvolQueryStatLxBaseInformation(PFILE_OBJECT FileObject,
+    PVOID *PBuffer, PVOID BufferEnd,
+    const FSP_FSCTL_FILE_INFO *FileInfo)
+{
+    PAGED_CODE();
+
+    PFSP_FILE_STAT_LX_INFORMATION Info = (PFSP_FILE_STAT_LX_INFORMATION)*PBuffer;
+    FSP_FILE_NODE *FileNode = FileObject->FsContext;
+
+    if (0 == FileInfo)
+    {
+        if ((PVOID)(Info + 1) > BufferEnd)
+            return STATUS_BUFFER_TOO_SMALL;
+
+        return STATUS_SUCCESS;
+    }
+
+    Info->FileId.QuadPart = FileNode->IndexNumber;
+    Info->CreationTime.QuadPart = FileInfo->CreationTime;
+    Info->LastAccessTime.QuadPart = FileInfo->LastAccessTime;
+    Info->LastWriteTime.QuadPart = FileInfo->LastWriteTime;
+    Info->ChangeTime.QuadPart = FileInfo->ChangeTime;
+    Info->AllocationSize.QuadPart = FileInfo->AllocationSize;
+    Info->EndOfFile.QuadPart = FileInfo->FileSize;
+    Info->FileAttributes = 0 != FileInfo->FileAttributes ?
+        FileInfo->FileAttributes : FILE_ATTRIBUTE_NORMAL;
+    Info->ReparseTag = FileInfo->ReparseTag;
+    Info->NumberOfLinks = 1;
+
+    *PBuffer = (PVOID)(Info + 1);
+
+    return STATUS_SUCCESS;
+}
+
+static NTSTATUS FspFsvolQueryStatLxEaInformation(
+    PDEVICE_OBJECT FsvolDeviceObject, PFILE_OBJECT FileObject,
+    PVOID *PBuffer, PVOID BufferEnd)
+{
+#define ADD_GET_EA(Name, End)           \
+    GetEa->NextEntryOffset = (ULONG)(End ? 0 :\
+        FSP_FSCTL_ALIGN_UP(             \
+            FIELD_OFFSET(FILE_GET_EA_INFORMATION, EaName) + sizeof("" Name),\
+            sizeof(ULONG)));            \
+    GetEa->EaNameLength = (UCHAR)(sizeof("" Name) - 1);\
+    RtlCopyMemory(GetEa->EaName, "" Name, sizeof("" Name));\
+    GetEaLength = (ULONG)((PUINT8)GetEa - (PUINT8)&GetEaBuf.V +\
+        FIELD_OFFSET(FILE_GET_EA_INFORMATION, EaName) + sizeof("" Name));\
+    GetEa = (PVOID)((PUINT8)GetEa + GetEa->NextEntryOffset);
+#define EQUAL_EA_NAME(Name)             \
+    CmpName.Length =                    \
+    CmpName.MaximumLength = sizeof("" Name) - 1,\
+    CmpName.Buffer = "" Name,           \
+    RtlEqualString(&CmpName, &EaName, TRUE/* always case-insensitive */)
+
+    PAGED_CODE();
+
+    FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension = FspFsvolDeviceExtension(FsvolDeviceObject);
+    PFSP_FILE_STAT_LX_INFORMATION Info = (PFSP_FILE_STAT_LX_INFORMATION)*PBuffer;
+    union
+    {
+        FILE_GET_EA_INFORMATION V;
+        UINT8 B[64];
+    } GetEaBuf;
+    PFILE_GET_EA_INFORMATION GetEa = &GetEaBuf.V;
+    ULONG GetEaLength = 0;
+    union
+    {
+        FILE_FULL_EA_INFORMATION V;
+        UINT8 B[128];
+    } EaBuf;
+    ULONG EaLength = sizeof EaBuf;
+    STRING EaName, CmpName;
+    NTSTATUS Result;
+
+    Info->LxFlags = 0;
+    Info->LxUid = 0;
+    Info->LxGid = 0;
+    Info->LxMode = 0;
+    Info->LxDeviceIdMajor = 0;
+    Info->LxDeviceIdMinor = 0;
+
+    if (!FsvolDeviceExtension->VolumeParams.ExtendedAttributes)
+        return STATUS_SUCCESS;
+
+    ADD_GET_EA("$LXUID", 0);
+    ADD_GET_EA("$LXGID", 0);
+    ADD_GET_EA("$LXMOD", 0);
+    ADD_GET_EA("$LXDEV", 1);
+
+    Result = FspSendQueryEaIrp(FsvolDeviceObject/* bypass filters */, FileObject,
+        &GetEaBuf.V, GetEaLength,
+        &EaBuf.V, &EaLength);
+    if (!NT_SUCCESS(Result))
+        return Result;
+
+    for (PFILE_FULL_EA_INFORMATION Ea = &EaBuf.V, EaEnd = (PVOID)((PUINT8)Ea + EaLength);
+        EaEnd > Ea; Ea = FSP_NEXT_EA(Ea, EaEnd))
+    {
+        EaName.Length =
+        EaName.MaximumLength = Ea->EaNameLength,
+        EaName.Buffer = Ea->EaName;
+
+        if (EQUAL_EA_NAME("$LXUID"))
+        {
+            if (sizeof(ULONG) == Ea->EaValueLength)
+            {
+                Info->LxFlags |= 0x1/*LX_FILE_METADATA_HAS_UID*/;
+                Info->LxUid = *(PULONG)(Ea->EaName + sizeof "$LXUID");
+            }
+        }
+        else
+        if (EQUAL_EA_NAME("$LXGID"))
+        {
+            if (sizeof(ULONG) == Ea->EaValueLength)
+            {
+                Info->LxFlags |= 0x2/*LX_FILE_METADATA_HAS_GID*/;
+                Info->LxGid = *(PULONG)(Ea->EaName + sizeof "$LXGID");
+            }
+        }
+        else
+        if (EQUAL_EA_NAME("$LXMOD"))
+        {
+            if (sizeof(ULONG) == Ea->EaValueLength)
+            {
+                Info->LxFlags |= 0x4/*LX_FILE_METADATA_HAS_MODE*/;
+                Info->LxMode = *(PULONG)(Ea->EaName + sizeof "$LXMOD");
+            }
+        }
+        else
+        if (EQUAL_EA_NAME("$LXDEV"))
+        {
+            if (sizeof(UINT64) == Ea->EaValueLength)
+            {
+                Info->LxFlags |= 0x8/*LX_FILE_METADATA_HAS_DEVICE_ID*/;
+                UINT64 Dev = *(PUINT64)(Ea->EaName + sizeof "$LXDEV");
+                Info->LxDeviceIdMajor = (Dev >> 32) & 0xffffffff;
+                Info->LxDeviceIdMinor = Dev & 0xffffffff;
+            }
+        }
+    }
+
+    return STATUS_SUCCESS;
+
+#undef EQUAL_EA_NAME
+#undef ADD_GET_EA
+}
+
 static NTSTATUS FspFsvolQueryStreamInformationCopy(
     FSP_FSCTL_STREAM_INFO *StreamInfo, ULONG StreamInfoSize,
     PVOID DestBuf, PULONG PDestLen)
@@ -646,6 +843,71 @@ static NTSTATUS FspFsvolQueryStreamInformationSuccess(
     return Result;
 }
 
+static NTSTATUS FspFsvolQueryInformationEffectiveAccess(
+    PDEVICE_OBJECT FsvolDeviceObject, PFILE_OBJECT FileObject,
+    PACCESS_MASK PEffectiveAccess)
+{
+    PAGED_CODE();
+
+    union
+    {
+        SECURITY_DESCRIPTOR V;
+        UINT8 B[256];
+    } SecurityDescriptorBuf;
+    PSECURITY_DESCRIPTOR SecurityDescriptor = &SecurityDescriptorBuf.V;
+    ULONG Length;
+    SECURITY_SUBJECT_CONTEXT SecuritySubjectContext;
+    ACCESS_MASK EffectiveAccess;
+    NTSTATUS Result;
+    BOOLEAN AccessResult;
+
+    *PEffectiveAccess = 0;
+
+    Length = sizeof SecurityDescriptorBuf;
+    Result = FspSendQuerySecurityIrp(FsvolDeviceObject/* bypass filters */, FileObject,
+        OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION | DACL_SECURITY_INFORMATION,
+        SecurityDescriptor, &Length);
+    if (STATUS_BUFFER_OVERFLOW == Result)
+    {
+        SecurityDescriptor = FspAlloc(Length);
+        if (0 == SecurityDescriptor)
+        {
+            Result = STATUS_INSUFFICIENT_RESOURCES;
+            goto exit;
+        }
+
+        Result = FspSendQuerySecurityIrp(FsvolDeviceObject/* bypass filters */, FileObject,
+            OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION | DACL_SECURITY_INFORMATION,
+            SecurityDescriptor, &Length);
+    }
+    if (!NT_SUCCESS(Result))
+        goto exit;
+
+    SeCaptureSubjectContext(&SecuritySubjectContext);
+
+    AccessResult = SeAccessCheck(
+        SecurityDescriptor,
+        &SecuritySubjectContext,
+        FALSE,
+        MAXIMUM_ALLOWED,
+        0,
+        0,
+        IoGetFileObjectGenericMapping(),
+        UserMode,
+        &EffectiveAccess,
+        &Result);
+    if (!AccessResult)
+        goto exit;
+
+    *PEffectiveAccess = EffectiveAccess;
+
+exit:
+    if (&SecurityDescriptorBuf.V != SecurityDescriptor && 0 != SecurityDescriptor)
+        FspFree(SecurityDescriptor);
+
+    return Result;
+}
+
 static NTSTATUS FspFsvolQueryInformation(
     PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
 {
@@ -720,6 +982,18 @@ static NTSTATUS FspFsvolQueryInformation(
     case FileStandardInformation:
         Result = FspFsvolQueryStandardInformation(FileObject, &Buffer, BufferEnd, 0);
         break;
+    case 68/*FileStatInformation*/:
+        if (FspFsvolDeviceExtension(FsvolDeviceObject)->VolumeParams.WslFeatures)
+            Result = FspFsvolQueryStatBaseInformation(FileObject, &Buffer, BufferEnd, 0);
+        else
+            Result = STATUS_INVALID_PARAMETER;
+        break;
+    case 70/*FileStatLxInformation*/:
+        if (FspFsvolDeviceExtension(FsvolDeviceObject)->VolumeParams.WslFeatures)
+            Result = FspFsvolQueryStatLxBaseInformation(FileObject, &Buffer, BufferEnd, 0);
+        else
+            Result = STATUS_INVALID_PARAMETER;
+        break;
     default:
         Result = STATUS_INVALID_PARAMETER;
         return Result;
@@ -729,6 +1003,26 @@ static NTSTATUS FspFsvolQueryInformation(
         return Result;
 
     FspFileNodeAcquireShared(FileNode, Main);
+
+    switch (FileInformationClass)
+    {
+    case 68/*FileStatInformation*/:
+        FspFsvolQueryInformationEffectiveAccess(
+            FsvolDeviceObject, FileObject, &((FSP_FILE_STAT_INFORMATION *)Buffer)->EffectiveAccess);
+        break;
+    case 70/*FileStatLxInformation*/:
+        FspFsvolQueryInformationEffectiveAccess(
+            FsvolDeviceObject, FileObject, &((FSP_FILE_STAT_LX_INFORMATION *)Buffer)->EffectiveAccess);
+        Result = FspFsvolQueryStatLxEaInformation(
+            FsvolDeviceObject, FileObject, &Buffer, BufferEnd);
+        if (!NT_SUCCESS(Result))
+        {
+            FspFileNodeRelease(FileNode, Main);
+            return Result;
+        }
+        break;
+    }
+
     if (FspFileNodeTryGetFileInfo(FileNode, &FileInfoBuf))
     {
         FspFileNodeRelease(FileNode, Main);
@@ -755,6 +1049,12 @@ static NTSTATUS FspFsvolQueryInformation(
         case FileStandardInformation:
             Result = FspFsvolQueryStandardInformation(FileObject, &Buffer, BufferEnd, &FileInfoBuf);
             break;
+        case 68/*FileStatInformation*/:
+            Result = FspFsvolQueryStatBaseInformation(FileObject, &Buffer, BufferEnd, &FileInfoBuf);
+            break;
+        case 70/*FileStatLxInformation*/:
+            Result = FspFsvolQueryStatLxBaseInformation(FileObject, &Buffer, BufferEnd, &FileInfoBuf);
+            break;
         default:
             ASSERT(0);
             Result = STATUS_INVALID_PARAMETER;
@@ -865,6 +1165,12 @@ NTSTATUS FspFsvolQueryInformationComplete(
     case FileStandardInformation:
         Result = FspFsvolQueryStandardInformation(FileObject, &Buffer, BufferEnd, FileInfo);
         break;
+    case 68/*FileStatInformation*/:
+        Result = FspFsvolQueryStatBaseInformation(FileObject, &Buffer, BufferEnd, FileInfo);
+        break;
+    case 70/*FileStatLxInformation*/:
+        Result = FspFsvolQueryStatLxBaseInformation(FileObject, &Buffer, BufferEnd, FileInfo);
+        break;
     default:
         ASSERT(0);
         Result = STATUS_INVALID_PARAMETER;
@@ -1813,7 +2119,7 @@ BOOLEAN FspFastIoQueryBasicInfo(
         if (Result)
         {
             PVOID Buffer = Info;
-            PVOID BufferEnd = (PUINT8)Info + sizeof Info;
+            PVOID BufferEnd = (PUINT8)Info + sizeof *Info;
             NTSTATUS Result0 = FspFsvolQueryBasicInformation(FileObject, &Buffer, BufferEnd, &FileInfoBuf);
             if (!NT_SUCCESS(Result0))
                 FSP_RETURN(Result = FALSE);
@@ -1851,7 +2157,7 @@ BOOLEAN FspFastIoQueryStandardInfo(
         if (Result)
         {
             PVOID Buffer = Info;
-            PVOID BufferEnd = (PUINT8)Info + sizeof Info;
+            PVOID BufferEnd = (PUINT8)Info + sizeof *Info;
             NTSTATUS Result0 = FspFsvolQueryStandardInformation(FileObject, &Buffer, BufferEnd, &FileInfoBuf);
             if (!NT_SUCCESS(Result0))
                 FSP_RETURN(Result = FALSE);
@@ -1889,7 +2195,7 @@ BOOLEAN FspFastIoQueryNetworkOpenInfo(
         if (Result)
         {
             PVOID Buffer = Info;
-            PVOID BufferEnd = (PUINT8)Info + sizeof Info;
+            PVOID BufferEnd = (PUINT8)Info + sizeof *Info;
             NTSTATUS Result0 = FspFsvolQueryNetworkOpenInformation(FileObject, &Buffer, BufferEnd, &FileInfoBuf);
             if (!NT_SUCCESS(Result0))
                 FSP_RETURN(Result = FALSE);
@@ -1933,7 +2239,7 @@ BOOLEAN FspFastIoQueryOpen(
     if (Result)
     {
         PVOID Buffer = Info;
-        PVOID BufferEnd = (PUINT8)Info + sizeof Info;
+        PVOID BufferEnd = (PUINT8)Info + sizeof *Info;
         NTSTATUS Result0 = FspFsvolQueryNetworkOpenInformation(FileObject, &Buffer, BufferEnd, &FileInfoBuf);
         if (!NT_SUCCESS(Result0))
             FSP_RETURN(Result = FALSE);

src/sys/fsctl.c

@@ -86,6 +86,7 @@ static NTSTATUS FspFsctlFileSystemControl(
             break;
         case FSP_FSCTL_TRANSACT:
         case FSP_FSCTL_TRANSACT_BATCH:
+        case FSP_FSCTL_TRANSACT_INTERNAL:
             if (0 != IrpSp->FileObject->FsContext2)
                 Result = FspVolumeTransact(FsctlDeviceObject, Irp, IrpSp);
             break;
@@ -93,6 +94,14 @@ static NTSTATUS FspFsctlFileSystemControl(
             if (0 != IrpSp->FileObject->FsContext2)
                 Result = FspVolumeStop(FsctlDeviceObject, Irp, IrpSp);
             break;
+        default:
+            if (CTL_CODE(0, 0xC00, 0, 0) ==
+                (IrpSp->Parameters.FileSystemControl.FsControlCode & CTL_CODE(0, 0xC00, 0, 0)))
+            {
+                if (0 != IrpSp->FileObject->FsContext2)
+                    Result = FspVolumeTransactFsext(FsctlDeviceObject, Irp, IrpSp);
+            }
+            break;
         }
         break;
     case IRP_MN_MOUNT_VOLUME:

src/sys/fsext.c

@@ -0,0 +1,118 @@
+/**
+ * @file sys/fsext.c
+ *
+ * @copyright 2015-2019 Bill Zissimopoulos
+ */
+/*
+ * This file is part of WinFsp.
+ *
+ * You can redistribute it and/or modify it under the terms of the GNU
+ * General Public License version 3 as published by the Free Software
+ * Foundation.
+ *
+ * Licensees holding a valid commercial license may use this software
+ * in accordance with the commercial license agreement provided in
+ * conjunction with the software.  The terms and conditions of any such
+ * commercial license agreement shall govern, supersede, and render
+ * ineffective any application of the GPLv3 license to this software,
+ * notwithstanding of any reference thereto in the software or
+ * associated repository.
+ */
+
+#include <sys/driver.h>
+#include <winfsp/fsext.h>
+
+static KSPIN_LOCK FsextSpinLock = 0;
+FSP_FSEXT_PROVIDER *FsextProvider;
+
+FSP_FSEXT_PROVIDER *FspFsextProvider(UINT32 FsextControlCode, PNTSTATUS PLoadResult)
+{
+    FSP_FSEXT_PROVIDER *Provider;
+    KIRQL Irql;
+
+    KeAcquireSpinLock(&FsextSpinLock, &Irql);
+    Provider = FsextProvider;
+    KeReleaseSpinLock(&FsextSpinLock, Irql);
+    if (0 != Provider && FsextControlCode != Provider->DeviceTransactCode)
+        Provider = 0;
+
+    if (0 != PLoadResult)
+    {
+        if (0 == Provider)
+        {
+            WCHAR Buf[64 + 256];
+            UNICODE_STRING Path;
+            UNICODE_STRING Name;
+            union
+            {
+                KEY_VALUE_PARTIAL_INFORMATION V;
+                UINT8 B[FIELD_OFFSET(KEY_VALUE_PARTIAL_INFORMATION, Data) + 256];
+            } Value;
+            ULONG Length;
+            NTSTATUS Result;
+
+            RtlInitUnicodeString(&Path, L"" FSP_REGKEY "\\Fsext");
+            RtlInitEmptyUnicodeString(&Name, Buf, sizeof Buf);
+            Result = RtlUnicodeStringPrintf(&Name, L"%08x", FsextControlCode);
+            ASSERT(NT_SUCCESS(Result));
+            Length = sizeof Value;
+            Result = FspRegistryGetValue(&Path, &Name, &Value.V, &Length);
+            if (!NT_SUCCESS(Result))
+            {
+                *PLoadResult = Result;
+                return 0;
+            }
+            if (REG_SZ != Value.V.Type)
+            {
+                *PLoadResult = STATUS_OBJECT_NAME_NOT_FOUND;
+                return 0;
+            }
+
+            RtlInitEmptyUnicodeString(&Path, Buf, sizeof Buf);
+            Result = RtlUnicodeStringPrintf(&Path,
+                L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\%s", (PWSTR)Value.V.Data);
+            ASSERT(NT_SUCCESS(Result));
+
+            Result = ZwLoadDriver(&Path);
+            if (!NT_SUCCESS(Result) && STATUS_IMAGE_ALREADY_LOADED != Result)
+            {
+                *PLoadResult = Result;
+                return 0;
+            }
+
+            KeAcquireSpinLock(&FsextSpinLock, &Irql);
+            Provider = FsextProvider;
+            KeReleaseSpinLock(&FsextSpinLock, Irql);
+            if (0 != Provider && FsextControlCode != Provider->DeviceTransactCode)
+                Provider = 0;
+        }
+
+        *PLoadResult = 0 != Provider ? STATUS_SUCCESS : STATUS_OBJECT_NAME_NOT_FOUND;
+    }
+
+    return Provider;
+}
+
+NTSTATUS FspFsextProviderRegister(FSP_FSEXT_PROVIDER *Provider)
+{
+    NTSTATUS Result;
+    KIRQL Irql;
+
+    KeAcquireSpinLock(&FsextSpinLock, &Irql);
+
+    if (0 != FsextProvider)
+    {
+        Result = STATUS_TOO_LATE;
+        goto exit;
+    }
+
+    Provider->DeviceExtensionOffset = FIELD_OFFSET(FSP_FSVOL_DEVICE_EXTENSION, FsextData);
+    FsextProvider = Provider;
+
+    Result = STATUS_SUCCESS;
+
+exit:
+    KeReleaseSpinLock(&FsextSpinLock, Irql);
+
+    return Result;
+}

src/sys/ioq.c

@@ -688,6 +688,12 @@ BOOLEAN FspIoqRetryCompleteIrp(FSP_IOQ *Ioq, PIRP Irp, NTSTATUS *PResult)
     Result = FspCsqInsertIrpEx(&Ioq->RetriedIoCsq, Irp, 0, 0);
     if (NT_SUCCESS(Result))
     {
+        /* wake up a waiter */
+        KIRQL Irql;
+        KeAcquireSpinLock(&Ioq->SpinLock, &Irql);
+        FspIoqEventSet(&Ioq->PendingIrpEvent);
+        KeReleaseSpinLock(&Ioq->SpinLock, Irql);
+
         if (0 != PResult)
             *PResult = STATUS_PENDING;
         return TRUE;

src/sys/meta.c

@@ -103,7 +103,7 @@ static inline FSP_META_CACHE_ITEM *FspMetaCacheRemoveExpiredItemAtDpcLevel(FSP_M
     if (Head == Entry)
         return 0;
     FSP_META_CACHE_ITEM *Item = CONTAINING_RECORD(Entry, FSP_META_CACHE_ITEM, ListEntry);
-    if (!FspExpirationTimeValid2(Item->ExpirationTime, ExpirationTime))
+    if (FspExpirationTimeValid2(Item->ExpirationTime, ExpirationTime))
         return 0;
     ULONG HashIndex = Item->ItemIndex % MetaCache->ItemBucketCount;
     for (FSP_META_CACHE_ITEM **P = (PVOID)&MetaCache->ItemBuckets[HashIndex]; *P; P = &(*P)->DictNext)
@@ -202,7 +202,7 @@ UINT64 FspMetaCacheAddItem(FSP_META_CACHE *MetaCache, PCVOID Buffer, ULONG Size)
 {
     if (0 == MetaCache)
         return 0;
-    FSP_META_CACHE_ITEM *Item;
+    FSP_META_CACHE_ITEM *Item, *ExpiredItem = 0;
     FSP_META_CACHE_ITEM_BUFFER *ItemBuffer;
     UINT64 ItemIndex = 0;
     KIRQL Irql;
@@ -236,12 +236,14 @@ UINT64 FspMetaCacheAddItem(FSP_META_CACHE *MetaCache, PCVOID Buffer, ULONG Size)
     }
     KeAcquireSpinLock(&MetaCache->SpinLock, &Irql);
     if (MetaCache->ItemCount >= MetaCache->MetaCapacity)
-        FspMetaCacheRemoveExpiredItemAtDpcLevel(MetaCache, (UINT64)-1LL);
+        ExpiredItem = FspMetaCacheRemoveExpiredItemAtDpcLevel(MetaCache, (UINT64)-1LL);
     ItemIndex = MetaCache->ItemIndex;
     ItemIndex = (UINT64)-1LL == ItemIndex ? 1 : ItemIndex + 1;
     MetaCache->ItemIndex = Item->ItemIndex = ItemIndex;
     FspMetaCacheAddItemAtDpcLevel(MetaCache, Item);
     KeReleaseSpinLock(&MetaCache->SpinLock, Irql);
+    if (0 != ExpiredItem)
+        FspMetaCacheDereferenceItem(ExpiredItem);
     return ItemIndex;
 }
 

src/sys/mup.c

@@ -275,6 +275,7 @@ NTSTATUS FspMupHandleIrp(
             if (FspFileNodeIsValid(FileObject->FsContext))
                 FsvolDeviceObject = ((FSP_FILE_NODE *)FileObject->FsContext)->FsvolDeviceObject;
             else if (0 != FileObject->FsContext2 &&
+#pragma prefast(disable:28175, "We are a filesystem: ok to access DeviceObject->Type")
                 3 == ((PDEVICE_OBJECT)FileObject->FsContext2)->Type &&
                 0 != ((PDEVICE_OBJECT)FileObject->FsContext2)->DeviceExtension &&
                 FspFsvolDeviceExtensionKind == FspDeviceExtension((PDEVICE_OBJECT)FileObject->FsContext2)->Kind)

src/sys/util.c

@@ -24,9 +24,18 @@
 NTSTATUS FspCreateGuid(GUID *Guid);
 NTSTATUS FspGetDeviceObjectPointer(PUNICODE_STRING ObjectName, ACCESS_MASK DesiredAccess,
     PULONG PFileNameIndex, PFILE_OBJECT *PFileObject, PDEVICE_OBJECT *PDeviceObject);
+NTSTATUS FspRegistryGetValue(PUNICODE_STRING Path, PUNICODE_STRING ValueName,
+    PKEY_VALUE_PARTIAL_INFORMATION ValueInformation, PULONG PValueInformationLength);
 NTSTATUS FspSendSetInformationIrp(PDEVICE_OBJECT DeviceObject, PFILE_OBJECT FileObject,
     FILE_INFORMATION_CLASS FileInformationClass, PVOID FileInformation, ULONG Length);
-static NTSTATUS FspSendSetInformationIrpCompletion(
+NTSTATUS FspSendQuerySecurityIrp(PDEVICE_OBJECT DeviceObject, PFILE_OBJECT FileObject,
+    SECURITY_INFORMATION SecurityInformation,
+    PSECURITY_DESCRIPTOR SecurityDescriptor,
+    PULONG PLength);
+NTSTATUS FspSendQueryEaIrp(PDEVICE_OBJECT DeviceObject, PFILE_OBJECT FileObject,
+    PFILE_GET_EA_INFORMATION GetEa, ULONG GetEaLength,
+    PFILE_FULL_EA_INFORMATION Ea, PULONG PEaLength);
+static NTSTATUS FspSendIrpCompletion(
     PDEVICE_OBJECT DeviceObject, PIRP Irp, PVOID Context0);
 NTSTATUS FspBufferUserBuffer(PIRP Irp, ULONG Length, LOCK_OPERATION Operation);
 NTSTATUS FspLockUserBuffer(PIRP Irp, ULONG Length, LOCK_OPERATION Operation);
@@ -123,7 +132,10 @@ NTSTATUS FspIrpHookNext(PDEVICE_OBJECT DeviceObject, PIRP Irp, PVOID Context);
 #ifdef ALLOC_PRAGMA
 #pragma alloc_text(PAGE, FspCreateGuid)
 #pragma alloc_text(PAGE, FspGetDeviceObjectPointer)
+#pragma alloc_text(PAGE, FspRegistryGetValue)
 #pragma alloc_text(PAGE, FspSendSetInformationIrp)
+#pragma alloc_text(PAGE, FspSendQuerySecurityIrp)
+#pragma alloc_text(PAGE, FspSendQueryEaIrp)
 #pragma alloc_text(PAGE, FspBufferUserBuffer)
 #pragma alloc_text(PAGE, FspLockUserBuffer)
 #pragma alloc_text(PAGE, FspMapLockedPagesInUserMode)
@@ -271,11 +283,43 @@ NTSTATUS FspGetDeviceObjectPointer(PUNICODE_STRING ObjectName, ACCESS_MASK Desir
     return Result;
 }
 
+NTSTATUS FspRegistryGetValue(PUNICODE_STRING Path, PUNICODE_STRING ValueName,
+    PKEY_VALUE_PARTIAL_INFORMATION ValueInformation, PULONG PValueInformationLength)
+{
+    PAGED_CODE();
+
+    OBJECT_ATTRIBUTES ObjectAttributes;
+    HANDLE Handle = 0;
+    NTSTATUS Result;
+
+    InitializeObjectAttributes(&ObjectAttributes,
+        Path, OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE, 0, 0);
+
+    Result = ZwOpenKey(&Handle, KEY_QUERY_VALUE, &ObjectAttributes);
+    if (!NT_SUCCESS(Result))
+        goto exit;
+
+    Result = ZwQueryValueKey(Handle, ValueName,
+        KeyValuePartialInformation, ValueInformation,
+        *PValueInformationLength, PValueInformationLength);
+    if (!NT_SUCCESS(Result))
+        goto exit;
+
+    Result = STATUS_SUCCESS;
+        /* NOTE: also converts STATUS_BUFFER_OVERFLOW to STATUS_SUCCESS */
+
+exit:
+    if (0 != Handle)
+        ZwClose(Handle);
+
+    return Result;
+}
+
 typedef struct
 {
     IO_STATUS_BLOCK IoStatus;
     KEVENT Event;
-} FSP_SEND_SET_INFORMATION_IRP_CONTEXT;
+} FSP_SEND_IRP_CONTEXT;
 
 NTSTATUS FspSendSetInformationIrp(PDEVICE_OBJECT DeviceObject, PFILE_OBJECT FileObject,
     FILE_INFORMATION_CLASS FileInformationClass, PVOID FileInformation, ULONG Length)
@@ -289,7 +333,7 @@ NTSTATUS FspSendSetInformationIrp(PDEVICE_OBJECT DeviceObject, PFILE_OBJECT File
     NTSTATUS Result;
     PIRP Irp;
     PIO_STACK_LOCATION IrpSp;
-    FSP_SEND_SET_INFORMATION_IRP_CONTEXT Context;
+    FSP_SEND_IRP_CONTEXT Context;
 
     if (0 == DeviceObject)
         DeviceObject = IoGetRelatedDeviceObject(FileObject);
@@ -304,24 +348,108 @@ NTSTATUS FspSendSetInformationIrp(PDEVICE_OBJECT DeviceObject, PFILE_OBJECT File
     IrpSp->MajorFunction = IRP_MJ_SET_INFORMATION;
     IrpSp->FileObject = FileObject;
     IrpSp->Parameters.SetFile.FileInformationClass = FileInformationClass;
-    IrpSp->Parameters.SetFile.Length = FileInformationClass;
-
-    IoSetCompletionRoutine(Irp, FspSendSetInformationIrpCompletion, &Context, TRUE, TRUE, TRUE);
+    IrpSp->Parameters.SetFile.Length = Length;
 
     KeInitializeEvent(&Context.Event, NotificationEvent, FALSE);
+    IoSetCompletionRoutine(Irp, FspSendIrpCompletion, &Context, TRUE, TRUE, TRUE);
+
     Result = IoCallDriver(DeviceObject, Irp);
     if (STATUS_PENDING == Result)
         KeWaitForSingleObject(&Context.Event, Executive, KernelMode, FALSE, 0);
 
-    return NT_SUCCESS(Result) ? Context.IoStatus.Status : Result;
+    return Context.IoStatus.Status;
 }
 
-static NTSTATUS FspSendSetInformationIrpCompletion(
+NTSTATUS FspSendQuerySecurityIrp(PDEVICE_OBJECT DeviceObject, PFILE_OBJECT FileObject,
+    SECURITY_INFORMATION SecurityInformation,
+    PSECURITY_DESCRIPTOR SecurityDescriptor,
+    PULONG PLength)
+{
+    PAGED_CODE();
+
+    NTSTATUS Result;
+    PIRP Irp;
+    PIO_STACK_LOCATION IrpSp;
+    FSP_SEND_IRP_CONTEXT Context;
+    ULONG Length = *PLength;
+
+    *PLength = 0;
+
+    if (0 == DeviceObject)
+        DeviceObject = IoGetRelatedDeviceObject(FileObject);
+
+    Irp = IoAllocateIrp(DeviceObject->StackSize, FALSE);
+    if (0 == Irp)
+        return STATUS_INSUFFICIENT_RESOURCES;
+
+    IrpSp = IoGetNextIrpStackLocation(Irp);
+    Irp->RequestorMode = KernelMode;
+    Irp->AssociatedIrp.SystemBuffer = SecurityDescriptor;
+    Irp->UserBuffer = SecurityDescriptor;
+    IrpSp->MajorFunction = IRP_MJ_QUERY_SECURITY;
+    IrpSp->FileObject = FileObject;
+    IrpSp->Parameters.QuerySecurity.SecurityInformation = SecurityInformation;
+    IrpSp->Parameters.QuerySecurity.Length = Length;
+
+    KeInitializeEvent(&Context.Event, NotificationEvent, FALSE);
+    IoSetCompletionRoutine(Irp, FspSendIrpCompletion, &Context, TRUE, TRUE, TRUE);
+
+    Result = IoCallDriver(DeviceObject, Irp);
+    if (STATUS_PENDING == Result)
+        KeWaitForSingleObject(&Context.Event, Executive, KernelMode, FALSE, 0);
+
+    *PLength = (ULONG)Context.IoStatus.Information;
+    return Context.IoStatus.Status;
+}
+
+NTSTATUS FspSendQueryEaIrp(PDEVICE_OBJECT DeviceObject, PFILE_OBJECT FileObject,
+    PFILE_GET_EA_INFORMATION GetEa, ULONG GetEaLength,
+    PFILE_FULL_EA_INFORMATION Ea, PULONG PEaLength)
+{
+    PAGED_CODE();
+
+    NTSTATUS Result;
+    PIRP Irp;
+    PIO_STACK_LOCATION IrpSp;
+    FSP_SEND_IRP_CONTEXT Context;
+    ULONG EaLength = *PEaLength;
+
+    *PEaLength = 0;
+
+    if (0 == DeviceObject)
+        DeviceObject = IoGetRelatedDeviceObject(FileObject);
+
+    Irp = IoAllocateIrp(DeviceObject->StackSize, FALSE);
+    if (0 == Irp)
+        return STATUS_INSUFFICIENT_RESOURCES;
+
+    IrpSp = IoGetNextIrpStackLocation(Irp);
+    Irp->RequestorMode = KernelMode;
+    Irp->AssociatedIrp.SystemBuffer = Ea;
+    Irp->UserBuffer = Ea;
+    IrpSp->MajorFunction = IRP_MJ_QUERY_EA;
+    IrpSp->FileObject = FileObject;
+    IrpSp->Parameters.QueryEa.Length = EaLength;
+    IrpSp->Parameters.QueryEa.EaList = GetEa;
+    IrpSp->Parameters.QueryEa.EaListLength = GetEaLength;
+
+    KeInitializeEvent(&Context.Event, NotificationEvent, FALSE);
+    IoSetCompletionRoutine(Irp, FspSendIrpCompletion, &Context, TRUE, TRUE, TRUE);
+
+    Result = IoCallDriver(DeviceObject, Irp);
+    if (STATUS_PENDING == Result)
+        KeWaitForSingleObject(&Context.Event, Executive, KernelMode, FALSE, 0);
+
+    *PEaLength = (ULONG)Context.IoStatus.Information;
+    return Context.IoStatus.Status;
+}
+
+static NTSTATUS FspSendIrpCompletion(
     PDEVICE_OBJECT DeviceObject, PIRP Irp, PVOID Context0)
 {
     // !PAGED_CODE();
 
-    FSP_SEND_SET_INFORMATION_IRP_CONTEXT *Context = Context0;
+    FSP_SEND_IRP_CONTEXT *Context = Context0;
 
     Context->IoStatus = Irp->IoStatus;
     KeSetEvent(&Context->Event, 1, FALSE);
@@ -633,6 +761,10 @@ NTSTATUS FspEaBufferFromFileSystemValidate(
 
     *PErrorOffset = 0;
 
+    /* EA buffers from the user mode file system are allowed to have zero length */
+    if (0 == Length)
+        return STATUS_SUCCESS;
+
     /* EA buffers from the user mode file system are allowed to end with NextEntryOffset != 0 */
     for (PFILE_FULL_EA_INFORMATION Ea = Buffer, EaEnd = (PVOID)((PUINT8)Ea + Length);
         EaEnd > Ea; Ea = FSP_NEXT_EA(Ea, EaEnd))

src/sys/volume.c

@@ -42,6 +42,8 @@ static NTSTATUS FspVolumeGetNameListNoLock(
     PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
 NTSTATUS FspVolumeTransact(
     PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
+NTSTATUS FspVolumeTransactFsext(
+    PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
 NTSTATUS FspVolumeStop(
     PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
 NTSTATUS FspVolumeWork(
@@ -59,6 +61,7 @@ NTSTATUS FspVolumeWork(
 #pragma alloc_text(PAGE, FspVolumeGetNameList)
 #pragma alloc_text(PAGE, FspVolumeGetNameListNoLock)
 #pragma alloc_text(PAGE, FspVolumeTransact)
+#pragma alloc_text(PAGE, FspVolumeTransactFsext)
 #pragma alloc_text(PAGE, FspVolumeStop)
 #pragma alloc_text(PAGE, FspVolumeWork)
 #endif
@@ -100,6 +103,7 @@ static NTSTATUS FspVolumeCreateNoLock(
     UNICODE_STRING VolumeName;
     UNICODE_STRING FsmupDeviceName;
     WCHAR VolumeNameBuf[FSP_FSCTL_VOLUME_NAME_SIZE / sizeof(WCHAR)];
+    FSP_FSEXT_PROVIDER *Provider = 0;
     PDEVICE_OBJECT FsvolDeviceObject;
     PDEVICE_OBJECT FsvrtDeviceObject;
     FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension;
@@ -132,7 +136,9 @@ static NTSTATUS FspVolumeCreateNoLock(
         VolumeParams.SectorsPerAllocationUnit = 1;
     if (0 == VolumeParams.MaxComponentLength)
         VolumeParams.MaxComponentLength = 255;
-    if (FspFsctlTransactTimeoutMinimum > VolumeParams.TransactTimeout ||
+    if (0 == VolumeParams.TransactTimeout)
+        VolumeParams.TransactTimeout = 24 * 60 * 60 * 1000; /* 1 day */
+    else if (FspFsctlTransactTimeoutMinimum > VolumeParams.TransactTimeout ||
         VolumeParams.TransactTimeout > FspFsctlTransactTimeoutMaximum)
         VolumeParams.TransactTimeout = FspFsctlTransactTimeoutDefault;
     if (FspFsctlIrpTimeoutMinimum > VolumeParams.IrpTimeout ||
@@ -207,6 +213,14 @@ static NTSTATUS FspVolumeCreateNoLock(
     VolumeParams.AlwaysUseDoubleBuffering = 1;
 #endif
 
+    /* load any fsext provider */
+    if (0 != VolumeParams.FsextControlCode)
+    {
+        Provider = FspFsextProvider(VolumeParams.FsextControlCode, &Result);
+        if (0 == Provider)
+            return Result;
+    }
+
     /* create volume guid */
     Result = FspCreateGuid(&Guid);
     if (!NT_SUCCESS(Result))
@@ -224,7 +238,8 @@ static NTSTATUS FspVolumeCreateNoLock(
     VolumeName.MaximumLength = VolumeName.Length;
 
     /* create the volume (and virtual disk) device(s) */
-    Result = FspDeviceCreate(FspFsvolDeviceExtensionKind, 0,
+    Result = FspDeviceCreate(FspFsvolDeviceExtensionKind,
+        0 == Provider ? 0 : Provider->DeviceExtensionSize,
         FsctlDeviceObject->DeviceType,
         FILE_DEVICE_DISK_FILE_SYSTEM == FsctlDeviceObject->DeviceType ? 0 : FILE_REMOTE_DEVICE,
         &FsvolDeviceObject);
@@ -270,6 +285,7 @@ static NTSTATUS FspVolumeCreateNoLock(
         if (0 != FsvrtDeviceObject)
             FspDeviceDereference(FsvrtDeviceObject);
         FspDeviceDereference(FsvolDeviceObject);
+        return Result;
     }
 
     /* do we need to register with fsmup? */
@@ -650,10 +666,8 @@ NTSTATUS FspVolumeTransact(
     ASSERT(IRP_MN_USER_FS_REQUEST == IrpSp->MinorFunction);
     ASSERT(
         FSP_FSCTL_TRANSACT == IrpSp->Parameters.FileSystemControl.FsControlCode ||
-        FSP_FSCTL_TRANSACT_BATCH == IrpSp->Parameters.FileSystemControl.FsControlCode);
-    ASSERT(
-        METHOD_BUFFERED == (IrpSp->Parameters.FileSystemControl.FsControlCode & 3) ||
-        METHOD_OUT_DIRECT == (IrpSp->Parameters.FileSystemControl.FsControlCode & 3));
+        FSP_FSCTL_TRANSACT_BATCH == IrpSp->Parameters.FileSystemControl.FsControlCode ||
+        FSP_FSCTL_TRANSACT_INTERNAL == IrpSp->Parameters.FileSystemControl.FsControlCode);
     ASSERT(0 != IrpSp->FileObject->FsContext2);
 
     /* check parameters */
@@ -661,17 +675,31 @@ NTSTATUS FspVolumeTransact(
     ULONG ControlCode = IrpSp->Parameters.FileSystemControl.FsControlCode;
     ULONG InputBufferLength = IrpSp->Parameters.FileSystemControl.InputBufferLength;
     ULONG OutputBufferLength = IrpSp->Parameters.FileSystemControl.OutputBufferLength;
-    PVOID InputBuffer = Irp->AssociatedIrp.SystemBuffer;
+    PVOID InputBuffer = 0;
     PVOID OutputBuffer = 0;
-    if (0 != InputBufferLength &&
-        FSP_FSCTL_DEFAULT_ALIGN_UP(sizeof(FSP_FSCTL_TRANSACT_RSP)) > InputBufferLength)
-        return STATUS_INVALID_PARAMETER;
-    if (0 != OutputBufferLength &&
-        ((FSP_FSCTL_TRANSACT == ControlCode &&
-            FSP_FSCTL_TRANSACT_BUFFER_SIZEMIN > OutputBufferLength) ||
-        (FSP_FSCTL_TRANSACT_BATCH == ControlCode &&
-            FSP_FSCTL_TRANSACT_BATCH_BUFFER_SIZEMIN > OutputBufferLength)))
-        return STATUS_BUFFER_TOO_SMALL;
+    if (FSP_FSCTL_TRANSACT_INTERNAL == ControlCode)
+    {
+        InputBuffer = IrpSp->Parameters.FileSystemControl.Type3InputBuffer;
+        if (KernelMode != Irp->RequestorMode)
+            return STATUS_INVALID_DEVICE_REQUEST;
+        ASSERT(0 == InputBufferLength ||
+            FSP_FSCTL_DEFAULT_ALIGN_UP(sizeof(FSP_FSCTL_TRANSACT_RSP)) <= InputBufferLength);
+        ASSERT(0 == OutputBufferLength ||
+            sizeof(PVOID) <= OutputBufferLength);
+    }
+    else
+    {
+        InputBuffer = Irp->AssociatedIrp.SystemBuffer;
+        if (0 != InputBufferLength &&
+            FSP_FSCTL_DEFAULT_ALIGN_UP(sizeof(FSP_FSCTL_TRANSACT_RSP)) > InputBufferLength)
+            return STATUS_INVALID_PARAMETER;
+        if (0 != OutputBufferLength &&
+            ((FSP_FSCTL_TRANSACT == ControlCode &&
+                FSP_FSCTL_TRANSACT_BUFFER_SIZEMIN > OutputBufferLength) ||
+            (FSP_FSCTL_TRANSACT_BATCH == ControlCode &&
+                FSP_FSCTL_TRANSACT_BATCH_BUFFER_SIZEMIN > OutputBufferLength)))
+            return STATUS_BUFFER_TOO_SMALL;
+    }
 
     if (!FspDeviceReference(FsvolDeviceObject))
         return STATUS_CANCELLED;
@@ -681,6 +709,7 @@ NTSTATUS FspVolumeTransact(
     PUINT8 BufferEnd;
     FSP_FSCTL_TRANSACT_RSP *Response, *NextResponse;
     FSP_FSCTL_TRANSACT_REQ *Request, *PendingIrpRequest;
+    PVOID InternalBuffer = 0;
     PIRP ProcessIrp, PendingIrp, RetriedIrp, RepostedIrp;
     ULONG LoopCount;
     LARGE_INTEGER Timeout;
@@ -749,6 +778,9 @@ NTSTATUS FspVolumeTransact(
     /* were we sent an output buffer? */
     switch (ControlCode & 3)
     {
+    case METHOD_NEITHER:
+        OutputBuffer = Irp->UserBuffer;
+        break;
     case METHOD_OUT_DIRECT:
         if (0 != Irp->MdlAddress)
             OutputBuffer = MmGetMdlVirtualAddress(Irp->MdlAddress);
@@ -770,17 +802,17 @@ NTSTATUS FspVolumeTransact(
 
     /* wait for an IRP to arrive */
     KeQuerySystemTime(&Timeout);
-    Timeout.QuadPart += 0 == RepostedIrp ?
-        FsvolDeviceExtension->VolumeParams.TransactTimeout * 10000ULL :
-        FspVolumeTransactEarlyTimeout;
+    Timeout.QuadPart += FsvolDeviceExtension->VolumeParams.TransactTimeout * 10000ULL;
         /* convert millis to nanos and add to absolute time */
-    while (0 == (PendingIrp = FspIoqNextPendingIrp(FsvolDeviceExtension->Ioq, 0, &Timeout, Irp)))
+    if (0 == (PendingIrp = FspIoqNextPendingIrp(FsvolDeviceExtension->Ioq, 0, &Timeout, Irp)))
     {
         if (FspIoqStopped(FsvolDeviceExtension->Ioq))
         {
             Result = STATUS_CANCELLED;
             goto exit;
         }
+
+        PendingIrp = FspIoqTimeout;
     }
     if (FspIoqTimeout == PendingIrp || FspIoqCancelled == PendingIrp)
     {
@@ -793,7 +825,9 @@ NTSTATUS FspVolumeTransact(
     RepostedIrp = 0;
     Request = OutputBuffer;
     BufferEnd = (PUINT8)OutputBuffer + OutputBufferLength;
-    ASSERT(FspFsctlTransactCanProduceRequest(Request, BufferEnd));
+    ASSERT(FSP_FSCTL_TRANSACT_INTERNAL == ControlCode ?
+        TRUE :
+        FspFsctlTransactCanProduceRequest(Request, BufferEnd));
     LoopCount = FspIoqPendingIrpCount(FsvolDeviceExtension->Ioq);
     for (;;)
     {
@@ -814,8 +848,18 @@ NTSTATUS FspVolumeTransact(
             FspIopCompleteIrp(PendingIrp, Result);
         else
         {
-            RtlCopyMemory(Request, PendingIrpRequest, PendingIrpRequest->Size);
-            Request = FspFsctlTransactProduceRequest(Request, PendingIrpRequest->Size);
+            if (FSP_FSCTL_TRANSACT_INTERNAL == ControlCode)
+            {
+                InternalBuffer = FspAllocatePoolMustSucceed(
+                    PagedPool, PendingIrpRequest->Size, FSP_ALLOC_EXTERNAL_TAG);
+                RtlCopyMemory(InternalBuffer, PendingIrpRequest, PendingIrpRequest->Size);
+                *(PVOID *)OutputBuffer = InternalBuffer;
+            }
+            else
+            {
+                RtlCopyMemory(Request, PendingIrpRequest, PendingIrpRequest->Size);
+                Request = FspFsctlTransactProduceRequest(Request, PendingIrpRequest->Size);
+            }
 
             if (!FspIoqStartProcessingIrp(FsvolDeviceExtension->Ioq, PendingIrp))
             {
@@ -826,12 +870,24 @@ NTSTATUS FspVolumeTransact(
                  * also cancel the PendingIrp we have in our hands.
                  */
                 ASSERT(FspIoqStopped(FsvolDeviceExtension->Ioq));
+                if (0 != InternalBuffer)
+                {
+                    ASSERT(FSP_FSCTL_TRANSACT_INTERNAL == ControlCode);
+                    FspFree(InternalBuffer);
+                }
                 FspIopCompleteCanceledIrp(PendingIrp);
                 Result = STATUS_CANCELLED;
                 goto exit;
             }
 
             /* are we doing single request or batch mode? */
+            if (FSP_FSCTL_TRANSACT_INTERNAL == ControlCode)
+            {
+                Irp->IoStatus.Information = sizeof(PVOID);
+                Result = STATUS_SUCCESS;
+                goto exit;
+            }
+            else
             if (FSP_FSCTL_TRANSACT == ControlCode)
                 break;
 
@@ -858,6 +914,36 @@ exit:
     return Result;
 }
 
+NTSTATUS FspVolumeTransactFsext(
+    PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
+{
+    PAGED_CODE();
+
+    ASSERT(IRP_MJ_FILE_SYSTEM_CONTROL == IrpSp->MajorFunction);
+    ASSERT(IRP_MN_USER_FS_REQUEST == IrpSp->MinorFunction);
+    ASSERT(CTL_CODE(0, 0xC00, 0, 0) ==
+        (IrpSp->Parameters.FileSystemControl.FsControlCode & CTL_CODE(0, 0xC00, 0, 0)));
+    ASSERT(0 != IrpSp->FileObject->FsContext2);
+
+    PDEVICE_OBJECT FsvolDeviceObject = IrpSp->FileObject->FsContext2;
+    if (!FspDeviceReference(FsvolDeviceObject))
+        return STATUS_CANCELLED;
+
+    NTSTATUS Result = STATUS_INVALID_DEVICE_REQUEST;
+    if (IrpSp->Parameters.FileSystemControl.FsControlCode ==
+        FspFsvolDeviceExtension(FsvolDeviceObject)->VolumeParams.FsextControlCode)
+    {
+        FSP_FSEXT_PROVIDER *Provider = FspFsextProvider(
+            IrpSp->Parameters.FileSystemControl.FsControlCode, 0);
+        if (0 != Provider)
+            Result = Provider->DeviceTransact(FsvolDeviceObject, Irp);
+    }
+
+    FspDeviceDereference(FsvolDeviceObject);
+
+    return Result;
+}
+
 NTSTATUS FspVolumeStop(
     PDEVICE_OBJECT FsctlDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
 {

tools/build.bat

@@ -6,7 +6,7 @@ setlocal EnableDelayedExpansion
 set MsiName="WinFsp - Windows File System Proxy"
 set CrossCert="%~dp0DigiCert High Assurance EV Root CA.crt"
 set Issuer="DigiCert"
-set Subject="Navimatics Corporation"
+set Subject="Navimatics LLC"
 
 set Configuration=Release
 set SignedPackage=

tools/debug.bat

@@ -4,7 +4,7 @@ setlocal
 
 set DebugWorkspace=winfsp
 set DebugPort=50000
-set DebugKey=win8.debug.net.key
+set DebugKey=1.1.1.1
 
 set RegKey="HKLM\SOFTWARE\Microsoft\Windows Kits\Installed Roots"
 set RegVal="KitsRoot10"

tools/deploy.bat

@@ -5,6 +5,7 @@ setlocal
 set CONFIG=Debug
 set SUFFIX=x64
 set TARGET_MACHINE=WIN8DBG
+if not X%1==X set TARGET_MACHINE=%1
 set TARGET_ACCOUNT=\Users\%USERNAME%\Downloads\winfsp\
 set TARGET=\\%TARGET_MACHINE%%TARGET_ACCOUNT%
 
@@ -14,7 +15,7 @@ for %%f in (winfsp-%SUFFIX%.sys winfsp-%SUFFIX%.dll winfsp-tests-%SUFFIX%.exe fs
 	copy build\VStudio\build\%CONFIG%\%%f %TARGET% >nul
 )
 copy tools\ifstest.bat %TARGET% >nul
-echo sc create WinFsp type=filesys binPath=%%~dp0%DRIVER% >%TARGET%sc-create.bat
+echo sc create WinFsp type=filesys binPath=%%~dp0winfsp-%SUFFIX%.sys >%TARGET%sc-create.bat
 echo sc start WinFsp >%TARGET%sc-start.bat
 echo sc stop WinFsp >%TARGET%sc-stop.bat
 echo sc delete WinFsp >%TARGET%sc-delete.bat

tools/impdef.bat

@@ -0,0 +1,44 @@
+@echo off
+
+setlocal
+setlocal EnableDelayedExpansion
+
+if X%1==X goto usage
+if X%2==X goto usage
+set infile=%1
+set infile=%infile:/=\%
+set outfile=%2
+set outfile=%outfile:/=\%
+set workdir=!infile!.work
+set workbase=!workdir!\%~n2
+set outarch=%~n2
+set outarch=%outarch:~-3%
+
+set arch=x64
+set cdef=/D_AMD64_
+if /i X%outarch%==Xx86 set arch=x86
+if /i X%outarch%==Xx86 set cdef=/D_X86_
+
+call "%VS140COMNTOOLS%\..\..\VC\vcvarsall.bat" !arch!
+set INCLUDE=%~dp0..\opt\fsext\inc;%~dp0..\inc;!WindowsSdkDir!Include\!WindowsSDKVersion!km\crt;!WindowsSdkDir!Include\!WindowsSDKVersion!km;!WindowsSdkDir!Include\!WindowsSDKVersion!km\shared;!INCLUDE!
+
+if exist !workdir! rmdir /s/q !workdir!
+mkdir !workdir!
+
+type !infile! >>!workbase!.c
+cl /LD /Fe!workbase!.sys /Fo!workbase!.obj !cdef! /D_KERNEL_MODE /wd4716 !workbase!.c
+if errorlevel 1 goto fail
+
+copy !workbase!.lib !outfile!
+if errorlevel 1 goto fail
+
+rmdir /s/q !workdir!
+
+exit /b 0
+
+:fail
+exit /b 1
+
+:usage
+echo usage: impdef.bat infile.impdef outfile.lib 1>&2
+exit /b 2

tools/run-tests.bat

@@ -71,6 +71,7 @@ set dfl_tests=^
     winfsp-tests-dotnet-external-share ^
     fsx-memfs-dotnet-disk ^
     fsx-memfs-dotnet-net ^
+    fsx-memfs-dotnet-slowio ^
     winfstest-memfs-dotnet-disk ^
     winfstest-memfs-dotnet-net
 set opt_tests=^
@@ -498,6 +499,11 @@ call :__run_fsx_memfs_slowio_test memfs32-slowio memfs-x86
 if !ERRORLEVEL! neq 0 goto fail
 exit /b 0
 
+:fsx-memfs-dotnet-slowio
+call :__run_fsx_memfs_slowio_test memfs.net-slowio memfs-dotnet-msil
+if !ERRORLEVEL! neq 0 goto fail
+exit /b 0
+
 :__run_fsx_memfs_slowio_test
 set RunSampleTestExit=0
 call "%ProjRoot%\tools\fsreg" %1 "%ProjRoot%\build\VStudio\build\%Configuration%\%2.exe" "-u %%%%1 -m %%%%2 -M 50 -P 10 -R 5" "D:P(A;;RPWPLC;;;WD)"

tst/airfs/.gitignore

@@ -3,3 +3,6 @@ build
 *.suo
 *.vcproj.*
 *.vcxproj.user
+*.VC.db
+*.VC.opendb
+.vs

tst/airfs/airfs.vcxproj

@@ -22,32 +22,32 @@
     <ProjectGuid>{CA441CE7-C4DE-4B5E-AA72-D4D483413EF0}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>airfs</RootNamespace>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>$(LatestTargetPlatformVersion)</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>

tst/launcher-tests/echo.c

@@ -0,0 +1,35 @@
+/*
+ * Compile:
+ *     - cl -I"%ProgramFiles(x86)%\WinFsp\inc" "%ProgramFiles(x86)%\WinFsp\lib\winfsp-x64.lib" echo.c
+ *
+ * Register:
+ *     - echo.reg (fix Executable path first)
+ *
+ * Run:
+ *     - launchctl-x64 start echo 1 \foo\bar\baz
+ *
+ * Expect:
+ *     - "\foo\bar\baz" "bar:baz" "DOMAIN\\USERNAME"
+ */
+
+#include <winfsp/winfsp.h>
+
+int wmain(int argc, wchar_t *argv[])
+{
+    WCHAR buf[512], *bufp;
+    int len;
+
+    bufp = buf;
+    for (int i = 0; argc > i; i++)
+    {
+        len = lstrlenW(argv[i]);
+        memcpy(bufp, argv[i], len * sizeof(WCHAR));
+        bufp += len;
+        *bufp++ = '\n';
+    }
+    *bufp = '\0';
+
+    FspServiceLog(EVENTLOG_INFORMATION_TYPE, L"%s", buf);
+
+    return 0;
+}

tst/memfs-dotnet/Program.cs

@@ -19,12 +19,17 @@
  * associated repository.
  */
 
+#define MEMFS_SLOWIO
+
 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Runtime.InteropServices;
 using System.Security.AccessControl;
 using System.Threading;
+#if MEMFS_SLOWIO
+using System.Threading.Tasks;
+#endif
 
 using Fsp;
 using VolumeInfo = Fsp.Interop.VolumeInfo;
@@ -232,15 +237,20 @@ namespace memfs
 
     class Memfs : FileSystemBase
     {
+        private FileSystemHost Host;
         public const UInt16 MEMFS_SECTOR_SIZE = 512;
         public const UInt16 MEMFS_SECTORS_PER_ALLOCATION_UNIT = 1;
 
         public Memfs(
-            Boolean CaseInsensitive, UInt32 MaxFileNodes, UInt32 MaxFileSize, String RootSddl)
+            Boolean CaseInsensitive, UInt32 MaxFileNodes, UInt32 MaxFileSize, String RootSddl,
+            UInt64 SlowioMaxDelay, UInt64 SlowioPercentDelay, UInt64 SlowioRarefyDelay)
         {
             this.FileNodeMap = new FileNodeMap(CaseInsensitive);
             this.MaxFileNodes = MaxFileNodes;
             this.MaxFileSize = MaxFileSize;
+            this.SlowioMaxDelay = SlowioMaxDelay;
+            this.SlowioPercentDelay = SlowioPercentDelay;
+            this.SlowioRarefyDelay = SlowioRarefyDelay;
 
             /*
              * Create root directory.
@@ -259,7 +269,7 @@ namespace memfs
 
         public override Int32 Init(Object Host0)
         {
-            FileSystemHost Host = (FileSystemHost)Host0;
+            Host = (FileSystemHost)Host0;
             Host.SectorSize = Memfs.MEMFS_SECTOR_SIZE;
             Host.SectorsPerAllocationUnit = Memfs.MEMFS_SECTORS_PER_ALLOCATION_UNIT;
             Host.VolumeCreationTime = (UInt64)DateTime.Now.ToFileTimeUtc();
@@ -274,9 +284,24 @@ namespace memfs
             Host.PostCleanupWhenModifiedOnly = true;
             Host.PassQueryDirectoryFileName = true;
             Host.ExtendedAttributes = true;
+            Host.WslFeatures = true;
             return STATUS_SUCCESS;
         }
 
+#if MEMFS_SLOWIO
+        public override int Mounted(object Host)
+        {
+            SlowioTasksRunning = 0;
+            return STATUS_SUCCESS;
+        }
+
+        public override void Unmounted(object Host)
+        {
+            while (SlowioTasksRunning != 0)
+                Thread.Sleep(1000);
+        }
+#endif
+
         public override Int32 GetVolumeInfo(
             out VolumeInfo VolumeInfo)
         {
@@ -331,8 +356,9 @@ namespace memfs
             UInt32 FileAttributes,
             Byte[] SecurityDescriptor,
             UInt64 AllocationSize,
-            IntPtr Ea,
-            UInt32 EaLength,
+            IntPtr ExtraBuffer,
+            UInt32 ExtraLength,
+            Boolean ExtraBufferIsReparsePoint,
             out Object FileNode0,
             out Object FileDesc,
             out FileInfo FileInfo,
@@ -369,11 +395,21 @@ namespace memfs
             FileNode.FileInfo.FileAttributes = 0 != (FileAttributes & (UInt32)System.IO.FileAttributes.Directory) ?
                 FileAttributes : FileAttributes | (UInt32)System.IO.FileAttributes.Archive;
             FileNode.FileSecurity = SecurityDescriptor;
-            if (IntPtr.Zero != Ea)
+            if (IntPtr.Zero != ExtraBuffer)
             {
-                Result = SetEaEntries(FileNode, null, Ea, EaLength);
-                if (0 > Result)
-                    return Result;
+                if (!ExtraBufferIsReparsePoint)
+                {
+                    Result = SetEaEntries(FileNode, null, ExtraBuffer, ExtraLength);
+                    if (0 > Result)
+                        return Result;
+                }
+                else
+                {
+                    Byte[] ReparseData = MakeReparsePoint(ExtraBuffer, ExtraLength);
+                    FileNode.FileInfo.FileAttributes |= (UInt32)System.IO.FileAttributes.ReparsePoint;
+                    FileNode.FileInfo.ReparseTag = GetReparseTag(ReparseData);
+                    FileNode.ReparseData = ReparseData;
+                }
             }
             if (0 != AllocationSize)
             {
@@ -549,6 +585,93 @@ namespace memfs
             Interlocked.Decrement(ref FileNode.OpenCount);
         }
 
+#if MEMFS_SLOWIO
+        private UInt64 Hash(UInt64 X)
+        {
+            X = (X ^ (X >> 30)) * 0xbf58476d1ce4e5b9ul;
+            X = (X ^ (X >> 27)) * 0x94d049bb133111ebul;
+            X = X ^ (X >> 31);
+            return X;
+        }
+
+        private static int Spin = 0;
+
+        private UInt64 PseudoRandom(UInt64 To)
+        {
+            /* John Oberschelp's PRNG */
+            Interlocked.Increment(ref Spin);
+            return Hash((UInt64)Spin) % To;
+        }
+
+        private bool SlowioReturnPending()
+        {
+            if (0 == SlowioMaxDelay)
+            {
+                return false;
+            }
+            return PseudoRandom(100) < SlowioPercentDelay;
+        }
+
+        private void SlowioSnooze()
+        {
+            double Millis = PseudoRandom(SlowioMaxDelay + 1) >> (int) PseudoRandom(SlowioRarefyDelay + 1);
+            Thread.Sleep(TimeSpan.FromMilliseconds(Millis));
+        }
+
+        private void SlowioReadTask(
+            Object FileNode0,
+            IntPtr Buffer,
+            UInt64 Offset,
+            UInt64 EndOffset,
+            UInt64 RequestHint)
+        {
+            SlowioSnooze();
+
+            UInt32 BytesTransferred = (UInt32)(EndOffset - Offset);
+            FileNode FileNode = (FileNode)FileNode0;
+            Marshal.Copy(FileNode.FileData, (int)Offset, Buffer, (int)BytesTransferred);
+
+            Host.SendReadResponse(RequestHint, STATUS_SUCCESS, BytesTransferred);
+            Interlocked.Decrement(ref SlowioTasksRunning);
+        }
+
+        private void SlowioWriteTask(
+            Object FileNode0,
+            IntPtr Buffer,
+            UInt64 Offset,
+            UInt64 EndOffset,
+            UInt64 RequestHint)
+        {
+            SlowioSnooze();
+
+            UInt32 BytesTransferred = (UInt32)(EndOffset - Offset);
+            FileNode FileNode = (FileNode)FileNode0;
+            FileInfo FileInfo = FileNode.GetFileInfo();
+            Marshal.Copy(Buffer, FileNode.FileData, (int)Offset, (int)BytesTransferred);
+
+            Host.SendWriteResponse(RequestHint, STATUS_SUCCESS, BytesTransferred, ref FileInfo);
+            Interlocked.Decrement(ref SlowioTasksRunning);
+        }
+
+        private void SlowioReadDirectoryTask(
+            Object FileNode0,
+            Object FileDesc,
+            String Pattern,
+            String Marker,
+            IntPtr Buffer,
+            UInt32 Length,
+            UInt64 RequestHint)
+        {
+            SlowioSnooze();
+
+            UInt32 BytesTransferred;
+            var Status = SeekableReadDirectory(FileNode0, FileDesc, Pattern, Marker, Buffer, Length, out BytesTransferred);
+
+            Host.SendReadDirectoryResponse(RequestHint, Status, BytesTransferred);
+            Interlocked.Decrement(ref SlowioTasksRunning);
+        }
+#endif
+
         public override Int32 Read(
             Object FileNode0,
             Object FileDesc,
@@ -570,6 +693,25 @@ namespace memfs
             if (EndOffset > FileNode.FileInfo.FileSize)
                 EndOffset = FileNode.FileInfo.FileSize;
 
+#if MEMFS_SLOWIO
+            if (SlowioReturnPending())
+            {
+                var Hint = Host.GetOperationRequestHint();
+                try
+                {
+                    Interlocked.Increment(ref SlowioTasksRunning);
+                    Task.Run(() => SlowioReadTask(FileNode0, Buffer, Offset, EndOffset, Hint)).ConfigureAwait(false);
+
+                    BytesTransferred = 0;
+                    return STATUS_PENDING;
+                }
+                catch (Exception)
+                {
+                    Interlocked.Decrement(ref SlowioTasksRunning);
+                }
+            }
+#endif
+
             BytesTransferred = (UInt32)(EndOffset - Offset);
             Marshal.Copy(FileNode.FileData, (int)Offset, Buffer, (int)BytesTransferred);
 
@@ -619,6 +761,26 @@ namespace memfs
                 }
             }
 
+#if MEMFS_SLOWIO
+            if (SlowioReturnPending())
+            {
+                var hint = Host.GetOperationRequestHint();
+                try
+                {
+                    Interlocked.Increment(ref SlowioTasksRunning);
+                    Task.Run(() => SlowioWriteTask(FileNode0, Buffer, Offset, EndOffset, hint)).ConfigureAwait(false);
+
+                    BytesTransferred = 0;
+                    FileInfo = default(FileInfo);
+                    return STATUS_PENDING;
+                }
+                catch (Exception)
+                {
+                    Interlocked.Decrement(ref SlowioTasksRunning);
+                }
+            }
+#endif
+
             BytesTransferred = (UInt32)(EndOffset - Offset);
             Marshal.Copy(Buffer, FileNode.FileData, (int)Offset, (int)BytesTransferred);
 
@@ -902,6 +1064,37 @@ namespace memfs
             return false;
         }
 
+#if MEMFS_SLOWIO
+        public override int ReadDirectory(
+            Object FileNode0,
+            Object FileDesc,
+            String Pattern,
+            String Marker,
+            IntPtr Buffer,
+            UInt32 Length,
+            out UInt32 BytesTransferred)
+        {
+            if (SlowioReturnPending())
+            {
+                var Hint = Host.GetOperationRequestHint();
+                try
+                {
+                    Interlocked.Increment(ref SlowioTasksRunning);
+                    Task.Run(() => SlowioReadDirectoryTask(FileNode0, FileDesc, Pattern, Marker, Buffer, Length, Hint));
+                    BytesTransferred = 0;
+
+                    return STATUS_PENDING;
+                }
+                catch (Exception)
+                {
+                    Interlocked.Decrement(ref SlowioTasksRunning);
+                }
+            }
+
+            return SeekableReadDirectory(FileNode0, FileDesc, Pattern, Marker, Buffer, Length, out BytesTransferred);
+        }
+#endif
+
         public override int GetDirInfoByName(
             Object ParentNode0,
             Object FileDesc,
@@ -1140,6 +1333,10 @@ namespace memfs
         private FileNodeMap FileNodeMap;
         private UInt32 MaxFileNodes;
         private UInt32 MaxFileSize;
+        private UInt64 SlowioMaxDelay;
+        private UInt64 SlowioPercentDelay;
+        private UInt64 SlowioRarefyDelay;
+        private volatile Int32 SlowioTasksRunning;
         private String VolumeLabel;
     }
 
@@ -1170,6 +1367,9 @@ namespace memfs
                 UInt32 FileInfoTimeout = unchecked((UInt32)(-1));
                 UInt32 MaxFileNodes = 1024;
                 UInt32 MaxFileSize = 16 * 1024 * 1024;
+                UInt32 SlowioMaxDelay = 0;
+                UInt32 SlowioPercentDelay = 0;
+                UInt32 SlowioRarefyDelay = 0;
                 String FileSystemName = null;
                 String VolumePrefix = null;
                 String MountPoint = null;
@@ -1202,9 +1402,18 @@ namespace memfs
                     case 'm':
                         argtos(Args, ref I, ref MountPoint);
                         break;
+                    case 'M':
+                        argtol(Args, ref I, ref SlowioMaxDelay);
+                        break;
                     case 'n':
                         argtol(Args, ref I, ref MaxFileNodes);
                         break;
+                    case 'P':
+                        argtol(Args, ref I, ref SlowioPercentDelay);
+                        break;
+                    case 'R':
+                       argtol(Args, ref I, ref SlowioRarefyDelay);
+                       break;
                     case 'S':
                         argtos(Args, ref I, ref RootSddl);
                         break;
@@ -1233,7 +1442,8 @@ namespace memfs
                         throw new CommandLineUsageException("cannot open debug log file");
 
                 Host = new FileSystemHost(Memfs = new Memfs(
-                    CaseInsensitive, MaxFileNodes, MaxFileSize, RootSddl));
+                    CaseInsensitive, MaxFileNodes, MaxFileSize, RootSddl,
+                    SlowioMaxDelay, SlowioPercentDelay, SlowioRarefyDelay));
                 Host.FileInfoTimeout = FileInfoTimeout;
                 Host.Prefix = VolumePrefix;
                 Host.FileSystemName = null != FileSystemName ? FileSystemName : "-MEMFS";
@@ -1262,6 +1472,9 @@ namespace memfs
                     "    -t FileInfoTimeout  [millis]\n" +
                     "    -n MaxFileNodes\n" +
                     "    -s MaxFileSize      [bytes]\n" +
+                    "    -M MaxDelay         [maximum slow IO delay in millis]\n" +
+                    "    -P PercentDelay     [percent of slow IO to make pending]\n" +
+                    "    -R RarefyDelay      [adjust the rarity of pending slow IO]\n" +
                     "    -F FileSystemName\n" +
                     "    -S RootSddl         [file rights: FA, etc; NO generic rights: GA, etc.]\n" +
                     "    -u \\Server\\Share    [UNC prefix (single backslash)]\n" +

tst/memfs/memfs.cpp

@@ -70,6 +70,11 @@ FSP_FSCTL_STATIC_ASSERT(MEMFS_MAX_PATH > MAX_PATH,
 #define MEMFS_EA
 
 /*
+ * Define the MEMFS_WSL macro to include WSLinux support.
+ */
+#define MEMFS_WSL
+
+ /*
  * Define the DEBUG_BUFFER_CHECK macro on Windows 8 or above. This includes
  * a check for the Write buffer to ensure that it is read-only.
  *
@@ -1047,8 +1052,8 @@ static NTSTATUS GetSecurityByName(FSP_FILE_SYSTEM *FileSystem,
 static NTSTATUS Create(FSP_FILE_SYSTEM *FileSystem,
     PWSTR FileName, UINT32 CreateOptions, UINT32 GrantedAccess,
     UINT32 FileAttributes, PSECURITY_DESCRIPTOR SecurityDescriptor, UINT64 AllocationSize,
-#if defined(MEMFS_EA)
-    PFILE_FULL_EA_INFORMATION Ea, ULONG EaLength,
+#if defined(MEMFS_EA) || defined(MEMFS_WSL)
+    PVOID ExtraBuffer, ULONG ExtraLength, BOOLEAN ExtraBufferIsReparsePoint,
 #endif
     PVOID *PFileNode, FSP_FSCTL_FILE_INFO *FileInfo)
 {
@@ -1129,15 +1134,43 @@ static NTSTATUS Create(FSP_FILE_SYSTEM *FileSystem,
         memcpy(FileNode->FileSecurity, SecurityDescriptor, FileNode->FileSecuritySize);
     }
 
-#if defined(MEMFS_EA)
-    if (0 != Ea)
+#if defined(MEMFS_EA) || defined(MEMFS_WSL)
+    if (0 != ExtraBuffer)
     {
-        Result = FspFileSystemEnumerateEa(FileSystem, MemfsFileNodeSetEa, FileNode, Ea, EaLength);
-        if (!NT_SUCCESS(Result))
+#if defined(MEMFS_EA)
+        if (!ExtraBufferIsReparsePoint)
         {
-            MemfsFileNodeDelete(FileNode);
-            return Result;
+            Result = FspFileSystemEnumerateEa(FileSystem, MemfsFileNodeSetEa, FileNode,
+                (PFILE_FULL_EA_INFORMATION)ExtraBuffer, ExtraLength);
+            if (!NT_SUCCESS(Result))
+            {
+                MemfsFileNodeDelete(FileNode);
+                return Result;
+            }
         }
+#endif
+#if defined(MEMFS_WSL)
+        if (ExtraBufferIsReparsePoint)
+        {
+#if defined(MEMFS_REPARSE_POINTS)
+            FileNode->ReparseDataSize = ExtraLength;
+            FileNode->ReparseData = malloc(ExtraLength);
+            if (0 == FileNode->ReparseData && 0 != ExtraLength)
+            {
+                MemfsFileNodeDelete(FileNode);
+                return STATUS_INSUFFICIENT_RESOURCES;
+            }
+
+            FileNode->FileInfo.FileAttributes |= FILE_ATTRIBUTE_REPARSE_POINT;
+            FileNode->FileInfo.ReparseTag = *(PULONG)ExtraBuffer;
+                /* the first field in a reparse buffer is the reparse tag */
+            memcpy(FileNode->ReparseData, ExtraBuffer, ExtraLength);
+#else
+            MemfsFileNodeDelete(FileNode);
+            return STATUS_INVALID_PARAMETER;
+#endif
+        }
+#endif
     }
 #endif
 
@@ -2189,7 +2222,7 @@ static FSP_FILE_SYSTEM_INTERFACE MemfsInterface =
     GetVolumeInfo,
     SetVolumeLabel,
     GetSecurityByName,
-#if defined(MEMFS_EA)
+#if defined(MEMFS_EA) || defined(MEMFS_WSL)
     0,
 #else
     Create,
@@ -2240,8 +2273,10 @@ static FSP_FILE_SYSTEM_INTERFACE MemfsInterface =
     0,
 #endif
     0,
-#if defined(MEMFS_EA)
+#if defined(MEMFS_EA) || defined(MEMFS_WSL)
     Create,
+#endif
+#if defined(MEMFS_EA)
     Overwrite,
     GetEa,
     SetEa
@@ -2347,6 +2382,9 @@ NTSTATUS MemfsCreateFunnel(
 #endif
 #if defined(MEMFS_EA)
     VolumeParams.ExtendedAttributes = 1;
+#endif
+#if defined(MEMFS_WSL)
+    VolumeParams.WslFeatures = 1;
 #endif
     VolumeParams.AllowOpenInKernelMode = 1;
     if (0 != VolumePrefix)

tst/passthrough-cpp/.gitignore

@@ -3,3 +3,6 @@ build
 *.suo
 *.vcproj.*
 *.vcxproj.user
+*.VC.db
+*.VC.opendb
+.vs

tst/passthrough-cpp/passthrough-cpp.vcxproj

@@ -22,32 +22,32 @@
     <ProjectGuid>{E8A4060D-E6A4-42CC-9BCA-DC82E6EDB2C5}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>passthroughcpp</RootNamespace>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>$(LatestTargetPlatformVersion)</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>

tst/passthrough-dotnet/.gitignore

@@ -4,3 +4,6 @@ build
 *.vcproj.*
 *.vcxproj.user
 *.csproj.user
+*.VC.db
+*.VC.opendb
+.vs

tst/passthrough-fuse/.gitignore

@@ -3,5 +3,8 @@ build
 *.suo
 *.vcproj.*
 *.vcxproj.user
+*.VC.db
+*.VC.opendb
+.vs
 *.exe
 *.install

tst/passthrough-fuse/passthrough-fuse.vcxproj

@@ -22,32 +22,32 @@
     <ProjectGuid>{C753851C-142F-4AAD-B2F7-CBF905C2A600}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>passthroughfuse</RootNamespace>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>$(LatestTargetPlatformVersion)</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>

tst/passthrough-fuse3/.gitignore

@@ -3,5 +3,8 @@ build
 *.suo
 *.vcproj.*
 *.vcxproj.user
+*.VC.db
+*.VC.opendb
+.vs
 *.exe
 *.install

tst/passthrough-fuse3/passthrough-fuse3.vcxproj

@@ -22,32 +22,32 @@
     <ProjectGuid>{5E99498C-D30C-48EF-A04A-7977C0305FAC}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>passthroughfuse3</RootNamespace>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>$(LatestTargetPlatformVersion)</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>

tst/passthrough/.gitignore

@@ -3,3 +3,6 @@ build
 *.suo
 *.vcproj.*
 *.vcxproj.user
+*.VC.db
+*.VC.opendb
+.vs

tst/passthrough/passthrough.vcxproj

@@ -25,32 +25,32 @@
     <ProjectGuid>{9E0E5997-7316-4818-A130-00B3AF1AD354}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>passthrough</RootNamespace>
-    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>$(LatestTargetPlatformVersion)</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>

tst/winfsp-tests/launcher-ptrans-test.c

@@ -0,0 +1,112 @@
+/**
+ * @file launcher-ptrans-test.c
+ *
+ * @copyright 2015-2019 Bill Zissimopoulos
+ */
+/*
+ * This file is part of WinFsp.
+ *
+ * You can redistribute it and/or modify it under the terms of the GNU
+ * General Public License version 3 as published by the Free Software
+ * Foundation.
+ *
+ * Licensees holding a valid commercial license may use this software
+ * in accordance with the commercial license agreement provided in
+ * conjunction with the software.  The terms and conditions of any such
+ * commercial license agreement shall govern, supersede, and render
+ * ineffective any application of the GPLv3 license to this software,
+ * notwithstanding of any reference thereto in the software or
+ * associated repository.
+ */
+
+#include <winfsp/launch.h>
+#include <tlib/testsuite.h>
+
+#include "winfsp-tests.h"
+
+#include <launcher/ptrans.c>
+
+static void launcher_ptrans_test(void)
+{
+    PWSTR ipaths[] =
+    {
+        L"", 0,
+        L"\\foo\\bar", 0,
+        L"", L"",
+        L"\\foo\\bar", L"",
+        L"\\foo\\bar", L"/",
+        L"\\foo\\bar", L"/_",
+        L"\\foo\\bar", L"/_1",
+        L"\\foo\\bar", L"\\_",
+        L"\\foo\\bar", L"\\_A",
+        L"\\foo\\bar", L"/a",
+        L"\\foo\\bar", L"/b",
+        L"\\foo\\bar", L"/c",
+        L"\\foo\\bar", L"/d",
+        L"\\foo\\bar", L"/a:b",
+        L"\\foo\\bar", L"/a:b&c!d",
+        L"\\foo\\bar", L"/b:a",
+        L"\\foo\\bar", L"/d!c&b:a",
+        L"\\foo\\bar", L"/a:_",
+        L"\\foo\\bar", L"/b:_",
+        L"\\foo\\bar", L"/c:_",
+        L"\\foo\\bar\\baz", L"/b:_",
+        L"\\foo\\bar\\baz\\bag", L"/b:_",
+        L"\\foo\\bar\\baz", L"/b:/_",
+        L"\\foo\\bar\\baz\\bag", L"/b:/_",
+        L"\\foo\\bar\\baz\\bag", L"/a:_:b:_",
+        L"\\foo\\bar\\baz\\bag", L"/_:_",
+    };
+    PWSTR opaths[] =
+    {
+        L"",
+        L"\\foo\\bar",
+        L"",
+        L"",
+        L"",
+        L"/foo/bar",
+        L"/foo/bar",
+        L"\\\\foo\\\\bar",
+        L"\\\\foo\\\\bar",
+        L"foo",
+        L"bar",
+        L"",
+        L"",
+        L"foo:bar",
+        L"foo:bar&!",
+        L"bar:foo",
+        L"!&bar:foo",
+        L"foo:bar",
+        L"bar:",
+        L":",
+        L"bar:baz",
+        L"bar:baz/bag",
+        L"bar:/baz",
+        L"bar:/baz/bag",
+        L"foo:bar/baz/bag:bar:baz/bag",
+        L"/foo/bar/baz/bag:/foo/bar/baz/bag",
+    };
+
+    for (size_t i = 0; sizeof ipaths / (sizeof ipaths[0] * 2) > i; i++)
+    {
+        WCHAR Buf[1024];
+        ULONG Length;
+        PWSTR Dest;
+
+        Length = (ULONG)(UINT_PTR)PathTransform(0, ipaths[2 * i + 0], ipaths[2 * i + 1]);
+        ASSERT(Length == wcslen(opaths[i]) * sizeof(WCHAR));
+
+        Dest = PathTransform(Buf, ipaths[2 * i + 0], ipaths[2 * i + 1]);
+        *Dest = L'\0';
+        ASSERT(Dest == Buf + wcslen(opaths[i]));
+        ASSERT(0 == wcscmp(Buf, opaths[i]));
+    }
+}
+
+void launcher_ptrans_tests(void)
+{
+    if (OptExternal)
+        return;
+
+    TEST_OPT(launcher_ptrans_test);
+}

tst/winfsp-tests/security-test.c

@@ -261,8 +261,78 @@ void setsecurity_test(void)
     }
 }
 
+void security_stress_meta_dotest(ULONG Flags, PWSTR Prefix, ULONG FileInfoTimeout)
+{
+#define NumFiles                        200/* 2*FspFsvolDeviceSecurityCacheCapacity */
+
+    void *memfs = memfs_start_ex(Flags, FileInfoTimeout);
+
+    HANDLE Handles[NumFiles];
+    WCHAR FilePath[MAX_PATH];
+    BOOL Success;
+    DWORD Length;
+
+    StringCbPrintfW(FilePath, sizeof FilePath, L"%s%s\\dir1",
+        Prefix ? L"" : L"\\\\?\\GLOBALROOT", Prefix ? Prefix : memfs_volumename(memfs));
+    Success = CreateDirectoryW(FilePath, 0);
+    ASSERT(Success);
+
+    for (int j = 0; NumFiles > j; j++)
+    {
+        StringCbPrintfW(FilePath, sizeof FilePath, L"%s%s\\dir1\\file%d",
+            Prefix ? L"" : L"\\\\?\\GLOBALROOT", Prefix ? Prefix : memfs_volumename(memfs), j + 1);
+        Handles[j] = CreateFileW(FilePath, GENERIC_ALL, 0, 0, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_DELETE_ON_CLOSE, 0);
+        ASSERT(INVALID_HANDLE_VALUE != Handles[j]);
+    }
+
+    for (int j = 0; NumFiles > j; j++)
+    {
+        Success = GetKernelObjectSecurity(Handles[j],
+            OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION | DACL_SECURITY_INFORMATION,
+            0, 0, &Length);
+        ASSERT(!Success);
+        ASSERT(ERROR_INSUFFICIENT_BUFFER == GetLastError());
+    }
+
+    for (int j = 0; NumFiles > j; j++)
+    {
+        Success = CloseHandle(Handles[j]);
+        ASSERT(Success);
+    }
+
+    StringCbPrintfW(FilePath, sizeof FilePath, L"%s%s\\dir1",
+        Prefix ? L"" : L"\\\\?\\GLOBALROOT", Prefix ? Prefix : memfs_volumename(memfs));
+    Success = RemoveDirectoryW(FilePath);
+    ASSERT(Success);
+
+    memfs_stop(memfs);
+
+#undef NumFiles
+}
+
+void security_stress_meta_test(void)
+{
+    if (NtfsTests)
+    {
+        WCHAR DirBuf[MAX_PATH];
+        GetTestDirectory(DirBuf);
+        security_stress_meta_dotest(-1, DirBuf, 0);
+    }
+    if (WinFspDiskTests)
+    {
+        security_stress_meta_dotest(MemfsDisk, 0, 0);
+        security_stress_meta_dotest(MemfsDisk, 0, 1000);
+    }
+    if (WinFspNetTests)
+    {
+        security_stress_meta_dotest(MemfsNet, L"\\\\memfs\\share", 0);
+        security_stress_meta_dotest(MemfsNet, L"\\\\memfs\\share", 1000);
+    }
+}
+
 void security_tests(void)
 {
     TEST(getsecurity_test);
     TEST(setsecurity_test);
+    TEST_OPT(security_stress_meta_test);
 }

tst/winfsp-tests/winfsp-tests.c

@@ -193,6 +193,7 @@ int main(int argc, char *argv[])
     TESTSUITE(dirbuf_tests);
     TESTSUITE(version_tests);
     TESTSUITE(launch_tests);
+    TESTSUITE(launcher_ptrans_tests);
     TESTSUITE(mount_tests);
     TESTSUITE(timeout_tests);
     TESTSUITE(memfs_tests);
@@ -209,6 +210,7 @@ int main(int argc, char *argv[])
     TESTSUITE(ea_tests);
     TESTSUITE(stream_tests);
     TESTSUITE(oplock_tests);
+    TESTSUITE(wsl_tests);
 
     atexit(exiting);
     signal(SIGABRT, abort_handler);

tst/winfsp-tests/wsl-test.c

@@ -0,0 +1,188 @@
+/**
+ * @file wsl-test.c
+ *
+ * @copyright 2015-2019 Bill Zissimopoulos
+ */
+/*
+ * This file is part of WinFsp.
+ *
+ * You can redistribute it and/or modify it under the terms of the GNU
+ * General Public License version 3 as published by the Free Software
+ * Foundation.
+ *
+ * Licensees holding a valid commercial license may use this software
+ * in accordance with the commercial license agreement provided in
+ * conjunction with the software.  The terms and conditions of any such
+ * commercial license agreement shall govern, supersede, and render
+ * ineffective any application of the GPLv3 license to this software,
+ * notwithstanding of any reference thereto in the software or
+ * associated repository.
+ */
+
+#include <winfsp/winfsp.h>
+#include <tlib/testsuite.h>
+#include <strsafe.h>
+#include "memfs.h"
+
+#include "winfsp-tests.h"
+
+typedef struct _FILE_STAT_INFORMATION
+{
+    LARGE_INTEGER FileId;
+    LARGE_INTEGER CreationTime;
+    LARGE_INTEGER LastAccessTime;
+    LARGE_INTEGER LastWriteTime;
+    LARGE_INTEGER ChangeTime;
+    LARGE_INTEGER AllocationSize;
+    LARGE_INTEGER EndOfFile;
+    ULONG FileAttributes;
+    ULONG ReparseTag;
+    ULONG NumberOfLinks;
+    ACCESS_MASK EffectiveAccess;
+} FILE_STAT_INFORMATION, *PFILE_STAT_INFORMATION;
+
+typedef struct _FILE_STAT_LX_INFORMATION
+{
+    LARGE_INTEGER FileId;
+    LARGE_INTEGER CreationTime;
+    LARGE_INTEGER LastAccessTime;
+    LARGE_INTEGER LastWriteTime;
+    LARGE_INTEGER ChangeTime;
+    LARGE_INTEGER AllocationSize;
+    LARGE_INTEGER EndOfFile;
+    ULONG FileAttributes;
+    ULONG ReparseTag;
+    ULONG NumberOfLinks;
+    ACCESS_MASK EffectiveAccess;
+    ULONG LxFlags;
+    ULONG LxUid;
+    ULONG LxGid;
+    ULONG LxMode;
+    ULONG LxDeviceIdMajor;
+    ULONG LxDeviceIdMinor;
+} FILE_STAT_LX_INFORMATION, *PFILE_STAT_LX_INFORMATION;
+
+NTSTATUS NTAPI NtQueryInformationFile(
+    HANDLE FileHandle,
+    PIO_STATUS_BLOCK IoStatusBlock,
+    PVOID FileInformation,
+    ULONG Length,
+    FILE_INFORMATION_CLASS FileInformationClass);
+
+static void wsl_stat_dotest(ULONG Flags, PWSTR Prefix, ULONG FileInfoTimeout)
+{
+    void *memfs = memfs_start_ex(Flags, FileInfoTimeout);
+
+    HANDLE Handle;
+    WCHAR FilePath[MAX_PATH];
+    FILE_STAT_INFORMATION StatInfo;
+    FILE_STAT_LX_INFORMATION StatLxInfo;
+    FILETIME FileTime;
+    LONGLONG TimeLo, TimeHi;
+    IO_STATUS_BLOCK IoStatus;
+    NTSTATUS Result;
+
+    GetSystemTimeAsFileTime(&FileTime);
+    TimeLo = ((PLARGE_INTEGER)&FileTime)->QuadPart;
+    TimeHi = TimeLo + 10000 * 10000/* 10 seconds */;
+
+    StringCbPrintfW(FilePath, sizeof FilePath, L"%s%s\\file0",
+        Prefix ? L"" : L"\\\\?\\GLOBALROOT", Prefix ? Prefix : memfs_volumename(memfs));
+
+    Handle = CreateFileW(FilePath,
+        GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, 0,
+        CREATE_NEW, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_DELETE_ON_CLOSE, 0);
+    ASSERT(INVALID_HANDLE_VALUE != Handle);
+
+    for (int repeat = 0; 2 > repeat; repeat++)
+    {
+        /* repeat this test to ensure that any caches are tested */
+
+        Result = NtQueryInformationFile(Handle, &IoStatus, &StatInfo, sizeof StatInfo,
+            68/*FileStatInformation*/);
+        if (STATUS_SUCCESS == Result)
+        {
+            ASSERT(STATUS_SUCCESS == Result);
+            if (-1 != Flags)
+                ASSERT(
+                    TimeLo <= StatInfo.CreationTime.QuadPart &&
+                    TimeHi >  StatInfo.CreationTime.QuadPart);
+            ASSERT(
+                TimeLo <= StatInfo.LastAccessTime.QuadPart &&
+                TimeHi >  StatInfo.LastAccessTime.QuadPart);
+            ASSERT(
+                TimeLo <= StatInfo.LastWriteTime.QuadPart &&
+                TimeHi >  StatInfo.LastWriteTime.QuadPart);
+            ASSERT(
+                TimeLo <= StatInfo.ChangeTime.QuadPart &&
+                TimeHi >  StatInfo.ChangeTime.QuadPart);
+            ASSERT(0 == StatInfo.AllocationSize.QuadPart);
+            ASSERT(0 == StatInfo.EndOfFile.QuadPart);
+            //ASSERT(FILE_ATTRIBUTE_ARCHIVE == StatInfo.FileAttributes);
+            ASSERT(0 == StatInfo.ReparseTag);
+            ASSERT(1 == StatInfo.NumberOfLinks);
+            //tlib_printf("%lx %lx", FILE_GENERIC_READ | FILE_GENERIC_WRITE, StatInfo.EffectiveAccess);
+            //ASSERT((FILE_GENERIC_READ | FILE_GENERIC_WRITE) == StatInfo.EffectiveAccess);
+
+            Result = NtQueryInformationFile(Handle, &IoStatus, &StatLxInfo, sizeof StatLxInfo,
+                70/*FileStatLxInformation*/);
+            ASSERT(STATUS_SUCCESS == Result);
+            if (-1 != Flags)
+                ASSERT(
+                    TimeLo <= StatLxInfo.CreationTime.QuadPart &&
+                    TimeHi >  StatLxInfo.CreationTime.QuadPart);
+            ASSERT(
+                TimeLo <= StatLxInfo.LastAccessTime.QuadPart &&
+                TimeHi >  StatLxInfo.LastAccessTime.QuadPart);
+            ASSERT(
+                TimeLo <= StatLxInfo.LastWriteTime.QuadPart &&
+                TimeHi >  StatLxInfo.LastWriteTime.QuadPart);
+            ASSERT(
+                TimeLo <= StatLxInfo.ChangeTime.QuadPart &&
+                TimeHi >  StatLxInfo.ChangeTime.QuadPart);
+            ASSERT(0 == StatLxInfo.AllocationSize.QuadPart);
+            ASSERT(0 == StatLxInfo.EndOfFile.QuadPart);
+            //ASSERT(FILE_ATTRIBUTE_ARCHIVE == StatLxInfo.FileAttributes);
+            ASSERT(0 == StatLxInfo.ReparseTag);
+            ASSERT(1 == StatLxInfo.NumberOfLinks);
+            //tlib_printf("%lx %lx", FILE_GENERIC_READ | FILE_GENERIC_WRITE, StatLxInfo.EffectiveAccess);
+            //ASSERT((FILE_GENERIC_READ | FILE_GENERIC_WRITE) == StatLxInfo.EffectiveAccess);
+        }
+        else
+        {
+            ASSERT(
+                STATUS_INVALID_INFO_CLASS == Result ||
+                STATUS_NOT_IMPLEMENTED == Result/* value returned under WOW64 */);
+            FspDebugLog(__FUNCTION__ ": only works in Win10 with WSLinux\n");
+        }
+    }
+
+    CloseHandle(Handle);
+
+    memfs_stop(memfs);
+}
+
+static void wsl_stat_test(void)
+{
+    if (NtfsTests)
+    {
+        WCHAR DirBuf[MAX_PATH];
+        GetTestDirectory(DirBuf);
+        wsl_stat_dotest(-1, DirBuf, 0);
+    }
+    if (WinFspDiskTests)
+    {
+        wsl_stat_dotest(MemfsDisk, 0, 0);
+        wsl_stat_dotest(MemfsDisk, 0, 1000);
+    }
+    if (WinFspNetTests)
+    {
+        wsl_stat_dotest(MemfsNet, L"\\\\memfs\\share", 0);
+        wsl_stat_dotest(MemfsNet, L"\\\\memfs\\share", 1000);
+    }
+}
+
+void wsl_tests(void)
+{
+    TEST_OPT(wsl_stat_test);
+}