sys: FspFsvolCreate, FspFsvolSetSecurity: absolute security descriptors

Some third party filters send us security descriptors in absolute rather than self-relative format. Handle this case by converting them to self- relative format ourselves.
tools: make-release: add new signatures
2025-04-22 08:23:05 -05:00 · 2024-10-10 12:34:04 +01:00 · 2024-09-11 14:48:55 +01:00 · 2024-09-11 14:46:38 +01:00 · 2024-09-11 13:23:41 +01:00 · 2024-09-10 09:25:12 +01:00
191 changed files with 1996 additions and 400 deletions
--- a/.github/workflows/avm.yml
+++ b/.github/workflows/avm.yml
@ -11,8 +11,8 @@ jobs:
    - uses: billziss-gh/avm@v1
      with:
        files: |
-            https://github.com/winfsp/winfsp/releases/download/v1.6/winfsp-1.6.20027.msi
-            https://github.com/winfsp/winfsp/releases/download/v1.7/winfsp-1.7.20172.msi
-            https://github.com/winfsp/winfsp/releases/download/v1.8/winfsp-1.8.20304.msi
-            https://github.com/winfsp/winfsp/releases/download/v1.9/winfsp-1.9.21096.msi
            https://github.com/winfsp/winfsp/releases/download/v1.10/winfsp-1.10.22006.msi
+            https://github.com/winfsp/winfsp/releases/download/v1.11/winfsp-1.11.22176.msi
+            https://github.com/winfsp/winfsp/releases/download/v1.12/winfsp-1.12.22301.msi
+            https://github.com/winfsp/winfsp/releases/download/v1.12.22339/winfsp-1.12.22339.msi
+            https://github.com/winfsp/winfsp/releases/download/v2.0/winfsp-2.0.23075.msi
--- a/Changelog.md
+++ b/Changelog.md
@ -1,6 +1,117 @@
 # Changelog


+## v2.1B2 (2024 Beta2)
+
+- [FIX] Fixes a rare BSOD on recent versions of Windows. See commit a482183 for details.
+
+- [FIX] Fixes a rare problem when using `NtCreateFile` to perform "relative" opens on a network drive (see GitHub issue #561).
+
+- [FIX] Fixes a racing issue with two processes competing to start the FSD discovered during testing.
+
+
+## v2.1B1 (2024 Beta1)
+
+- [FIX] Fixes a rare BSOD on recent versions of Windows. See commit a482183 for details.
+
+- [FIX] Fixes a racing issue with two processes competing to start the FSD discovered during testing.
+
+
+## v2.0 (2023)
+
+This release is a major version change for WinFsp (from 1.x to 2.x). There are no backwards incompatible API changes in this release, but nevertheless enough things change that warrant a version change.
+
+The major new feature of this release is that it allows uninstallation and reinstallation of WinFsp **without reboot**. Going forward installers named `winfsp-2.x.y.msi` can be uninstalled and reinstalled without reboot. Furthermore a later version `winfsp-2.x.y.msi` installer can be used to upgrade over an earlier version `winfsp-2.x.y.msi` installer. However note that a `winfsp-2.x.y.msi` installer cannot be used to upgrade over a legacy `winfsp-1.x.y.msi` installer; you will still need to uninstall the old `winfsp-1.x.y.msi` installer, potentially reboot and then install the new `winfsp-2.x.y.msi` installer.
+
+Changes visible to file system developers are listed below:
+
+- WinFsp executable files are now installed by default in the directory `C:\Program Files (x86)\WinFsp\SxS\sxs.<InstanceID>\bin`. The previous directory `C:\Program Files (x86)\WinFsp\bin` is now a junction that points to the above directory.
+
+- The WinFsp driver name is no longer `winfsp`, but rather a name such as `winfsp+<InstanceID>`. This means that managing the driver using the `sc.exe` utility is no longer as easy.
+
+- The `fsptool` utility has been updated with new commands `lsdrv`, `load`, `unload` and `ver`. The `lsdrv`, `load` and `unload` commands can be used to manage the driver from the command line. This is rarely necessary, but may be useful for troubleshooting purposes.
+
+- Prior to this release the WinFsp driver would never unmount a file system volume unless the user mode file system requested the unmount. From this release onward it is possible for the WinFsp driver to unmount a file system volume, without a user mode file system request. This is to allow for the driver to be unloaded.
+
+    A new operation `DispatcherStopped` has been added to `FSP_FILE_SYSTEM_INTERFACE`, which is sent after the file system volume has been unmounted and the file system dispatcher has been stopped. This can happen because of a user mode file system request via `FspFileSystemStopDispatcher` or because of driver unload. The `DispatcherStopped` operation includes a `Normally` parameter, which is `TRUE` for normal file system shutdown via `FspFileSystemStopDispatcher` and `FALSE` otherwise.
+
+    Native file systems that use the `FspService` infrastructure can use the `FspFileSystemStopServiceIfNecessary` API to handle the `DispatcherStopped` operation (see the MEMFS and NTPTFS samples). FUSE file systems get this functionality for free. .NET file systems that use the `Service` class infrastructure also get this functionality for free.
+
+- WinFsp now offers a .NET library that targets .NET Framework 3.5 (as before) and one that targets .NET Standard 2.0. This is due to work by @Noire001 in PR #451.
+
+    - There is now a winfsp.net nuget package at https://www.nuget.org/packages/winfsp.net
+
+- FUSE now supports path components up to 255 characters long (previously it was 255 bytes). This is due to work by @zeho11 in PR #474.
+
+    - The FUSE passthrough file systems have been updated to support long paths. This is also due to work by @zeho11.
+
+- In some rare circumstances WinFsp file systems could report duplicate directory entries. This problem has been fixed. (GitHub issue #475.)
+
+- The WinFsp symbols directory has been removed. If you are looking for WinFsp symbols you can find them at https://github.com/winfsp/winfsp.sym
+
+
+## v2.0RC1 (2023 RC1)
+
+This release is a major version change for WinFsp (from 1.x to 2.x). There are no backwards incompatible API changes in this release, but nevertheless enough things change that warrant a version change.
+
+The major new feature of this release is that it allows uninstallation and reinstallation of WinFsp **without reboot**. Going forward installers named `winfsp-2.x.y.msi` can be uninstalled and reinstalled without reboot. Furthermore a later version `winfsp-2.x.y.msi` installer can be used to upgrade over an earlier version `winfsp-2.x.y.msi` installer. However note that a `winfsp-2.x.y.msi` installer cannot be used to upgrade over a legacy `winfsp-1.x.y.msi` installer; you will still need to uninstall the old `winfsp-1.x.y.msi` installer, potentially reboot and then install the new `winfsp-2.x.y.msi` installer.
+
+Changes visible to file system developers are listed below:
+
+- WinFsp executable files are now installed by default in the directory `C:\Program Files (x86)\WinFsp\SxS\sxs.<InstanceID>\bin`. The previous directory `C:\Program Files (x86)\WinFsp\bin` is now a junction that points to the above directory.
+
+- The WinFsp driver name is no longer `winfsp`, but rather a name such as `winfsp+<InstanceID>`. This means that managing the driver using the `sc.exe` utility is no longer as easy.
+
+- The `fsptool` utility has been updated with new commands `lsdrv`, `load`, `unload` and `ver`. The `lsdrv`, `load` and `unload` commands can be used to manage the driver from the command line. This is rarely necessary, but may be useful for troubleshooting purposes.
+
+- Prior to this release the WinFsp driver would never unmount a file system volume unless the user mode file system requested the unmount. From this release onward it is possible for the WinFsp driver to unmount a file system volume, without a user mode file system request. This is to allow for the driver to be unloaded.
+
+    A new operation `DispatcherStopped` has been added to `FSP_FILE_SYSTEM_INTERFACE`, which is sent after the file system volume has been unmounted and the file system dispatcher has been stopped. This can happen because of a user mode file system request via `FspFileSystemStopDispatcher` or because of driver unload. The `DispatcherStopped` operation includes a `Normally` parameter, which is `TRUE` for normal file system shutdown via `FspFileSystemStopDispatcher` and `FALSE` otherwise.
+
+    Native file systems that use the `FspService` infrastructure can use the `FspFileSystemStopServiceIfNecessary` API to handle the `DispatcherStopped` operation (see the MEMFS and NTPTFS samples). FUSE file systems get this functionality for free. .NET file systems that use the `Service` class infrastructure also get this functionality for free.
+
+- WinFsp now offers a .NET library that targets .NET Framework 3.5 (as before) and one that targets .NET Standard 2.0. This is due to work by @Noire001 in PR #451.
+
+    - There is now a winfsp.net nuget package at https://www.nuget.org/packages/winfsp.net
+
+- FUSE now supports path components up to 255 characters long (previously it was 255 bytes). This is due to work by @zeho11 in PR #474.
+
+    - The FUSE passthrough file systems have been updated to support long paths. This is also due to work by @zeho11.
+
+- In some rare circumstances WinFsp file systems could report duplicate directory entries. This problem has been fixed. (GitHub issue #475.)
+
+- The WinFsp symbols directory has been removed. If you are looking for WinFsp symbols you can find them at https://github.com/winfsp/winfsp.sym
+
+
+## v2.0B2 (2023 Beta2)
+
+This release is a major version change for WinFsp (from 1.x to 2.x). There are no backwards incompatible API changes in this release, but nevertheless enough things change that warrant a version change.
+
+The major new feature of this release is that it allows uninstallation and reinstallation of WinFsp **without reboot**. Going forward installers named `winfsp-2.x.y.msi` can be uninstalled and reinstalled without reboot. Furthermore a later version `winfsp-2.x.y.msi` installer can be used to upgrade over an earlier version `winfsp-2.x.y.msi` installer. However note that a `winfsp-2.x.y.msi` installer cannot be used to upgrade over a "legacy" `winfsp-1.x.y.msi` installer; you will still need to uninstall the "old" `winfsp-1.x.y.msi` installer, potentially reboot and then install the "new" `winfsp-2.x.y.msi` installer.
+
+Changes visible to file system developers are listed below:
+
+- WinFsp executable files are now installed by default in the directory `C:\Program Files (x86)\WinFsp\SxS\sxs.<InstanceID>\bin`. The previous directory `C:\Program Files (x86)\WinFsp\bin` is now a junction that points to the above directory.
+
+- The WinFsp driver name is no longer `winfsp`, but rather a name such as `winfsp+<InstanceID>`. This means that managing the driver using the `sc.exe` utility is no longer as easy.
+
+- The `fsptool` utility has been updated with new commands `lsdrv`, `load`, `unload` and `ver`. The `lsdrv`, `load` and `unload` commands can be used to manage the driver from the command line. This is rarely necessary, but may be useful for troubleshooting purposes.
+
+- Prior to this release the WinFsp driver would never unmount a file system volume unless the user mode file system requested the unmount. From this release onward it is possible for the WinFsp driver to unmount a file system volume, without a user mode file system request. This is to allow for the driver to be unloaded.
+
+    A new operation `DispatcherStopped` has been added to `FSP_FILE_SYSTEM_INTERFACE`, which is sent after the file system volume has been unmounted and the file system dispatcher has been stopped. This can happen because of a user mode file system request via `FspFileSystemStopDispatcher` or because of driver unload. The `DispatcherStopped` operation includes a `Normally` parameter, which is `TRUE` for normal file system shutdown via `FspFileSystemStopDispatcher` and `FALSE` otherwise.
+
+    Native file systems that use the `FspService` infrastructure can use the `FspFileSystemStopServiceIfNecessary` API to handle the `DispatcherStopped` operation (see the MEMFS and NTPTFS samples). FUSE file systems get this functionality for free. .NET file systems that use the `Service` class infrastructure also get this functionality for free.
+
+- WinFsp now offers a .NET library that targets .NET Framework 3.5 (as before) and one that targets .NET Standard 2.0. This is due to work by @Noire001 in PR #451.
+
+- FUSE now supports path components up to 255 characters long (previously it was 255 bytes). This is due to work by @zeho11 in PR #474.
+
+    - The FUSE passthrough file systems have been updated to support long paths. This is also due to work by @zeho11.
+
+- The WinFsp symbols directory has been removed. If you are looking for WinFsp symbols you can find them at https://github.com/winfsp/winfsp.sym
+
+
 ## v2.0B1 (2023 Beta1)

 This release is a major version change for WinFsp (from 1.x to 2.x). There are no backwards incompatible API changes in this release, but nevertheless enough things change that warrant a version change.
@ -18,6 +129,23 @@ Some changes that may be visible to file system developers are listed below:
 - The WinFsp symbols directory has been removed. If you are looking for WinFsp symbols you can find them at https://github.com/winfsp/winfsp.sym


+## v1.12.22339 (2022.2 Update1)
+
+*Note: This release (`v1.12.22339`) is the same as the previous release (`v1.12`) except that: (1) the kernel-mode drivers are now digitally signed only with the Microsoft Attestation signature, and that: (2) no release assets are digitally signed with SHA-1. (This change was necessary to fix a problem in older versions of Windows such as Windows 7.)*
+
+- [NEW] WinFsp now supports mounting as directory using the Mount Manager. Use the syntax `\\.\C:\Path\To\Mount\Directory`.
+
+- [NEW] A new registry setting `MountUseMountmgrFromFSD` has been added. See [WinFsp Registry Settings](https://github.com/winfsp/winfsp/wiki/WinFsp-Registry-Settings) for details.
+
+- [FIX] A problem with Windows containers has been fixed. (GitHub issue #438.)
+
+- [FIX] File systems can now be mounted as directories on ARM64. (GitHub issue #448.)
+
+- [FIX] The passthrough file system now reports correct `IndexNumber`. (GitHub issue #325.)
+
+- [BUILD] Product configuration for the relative paths to the File System Driver, Network Provider and EventLog is now possible via the file `build.version.props` located in `build\VStudio`.
+
+
 ## v1.12 (2022.2)

 - [NEW] WinFsp now supports mounting as directory using the Mount Manager. Use the syntax `\\.\C:\Path\To\Mount\Directory`.
--- a/Contributors.asciidoc
+++ b/Contributors.asciidoc
@ -66,6 +66,8 @@ CONTRIBUTOR LIST
 |Gal Hammer (Red Hat, https://www.redhat.com)                   |ghammer at redhat.com
 |John Oberschelp                                                |john at oberschelp.net
 |John Tyner                                                     |jtyner at gmail.com
+|Konstantinos Karakostas                                        |noiredev at protonmail.com
+|Naoki Ikeguchi                                                 |me at s6n.jp
 |Paweł Wegner (Google LLC, https://google.com)                  |lemourin at google.com
 |Pedro Frejo (Arpa System, https://arpasystem.com)              |pedro.frejo at arpasystem.com
 |Ronny Chan                                                     |ronny at ronnychan.ca
@ -73,4 +75,5 @@ CONTRIBUTOR LIST
 |Santiago Ganis                                                 |sganis at gmail.com
 |Tobias Urlaub                                                  |saibotu at outlook.de
 |Victor Gao                                                     |victgm at outlook.com
+|Zeho Huang                                                     |zeho11 at protonmail.com
 |===
--- a/appveyor.yml
+++ b/appveyor.yml
@ -51,6 +51,11 @@ install:
      $targets.Save("C:\Program Files (x86)\Windows Kits\10\build\WindowsDriver.Common.targets")
      Add-AppveyorMessage "Hack to make WDK 1903 work on VS2015"
    }
+# Install .NET SDK on VS2015 image
+- ps: |
+    if ($env:APPVEYOR_BUILD_WORKER_IMAGE -eq "Visual Studio 2015") {
+        & ([scriptblock]::Create((New-Object System.Net.WebClient).DownloadString('https://dot.net/v1/dotnet-install.ps1'))) -InstallDir "C:\dotnet"
+    }
 # Submodules
 - git submodule update --init --recursive
 # Kernel and user mode dumps
@ -76,6 +81,9 @@ build_script:
 # remove ARM64 project configurations to build in VS2015/VS2017
 - if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2015" tools\gensrc\remove-build-arm64.bat
 - if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2017" tools\gensrc\remove-build-arm64.bat
+# remove .NET library from solution for VS2015 and use the .NET SDK instead
+- if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2015" tools\gensrc\remove-build-dotnet.bat build\VStudio
+- if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2015" set PATH=C:\dotnet;%PATH%
 # build winfsp
 - tools\build.bat %CONFIGURATION%

--- a/build/VStudio/build.version.props
+++ b/build/VStudio/build.version.props
@ -18,9 +18,9 @@
        <MyCompanyName>Navimatics LLC</MyCompanyName>
        <MyCopyright>2015-$([System.DateTime]::Now.ToString(`yyyy`)) Bill Zissimopoulos</MyCopyright>

-        <MyCanonicalVersion>2.0</MyCanonicalVersion>
+        <MyCanonicalVersion>2.1</MyCanonicalVersion>

-        <MyProductVersion>2023 Beta1</MyProductVersion>
+        <MyProductVersion>2024 Beta2</MyProductVersion>
        <MyProductStage>Beta</MyProductStage>

        <MyCrossCert>DigiCertGlobalG3CodeSigningECCSHA3842021CA1.cer</MyCrossCert>
--- a/build/VStudio/dotnet/winfsp.net.csproj
+++ b/build/VStudio/dotnet/winfsp.net.csproj
@ -1,25 +1,29 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
+  <PropertyGroup>
+    <BaseIntermediateOutputPath>$(SolutionDir)build\$(MSBuildProjectName).build\</BaseIntermediateOutputPath>
+  </PropertyGroup>
+  <Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk" />
  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), build.common.props))/build.common.props" />
-  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
  <PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-    <ProjectGuid>{94580219-CC8D-4FE5-A3BE-437B0B3481E1}</ProjectGuid>
    <OutputType>Library</OutputType>
    <ProjectName>winfsp.net</ProjectName>
    <RootNamespace>Fsp</RootNamespace>
    <AssemblyName>$(MyProductFileName)-msil</AssemblyName>
-    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
+    <TargetFrameworks>netstandard2.0;net35</TargetFrameworks>
    <FileAlignment>512</FileAlignment>
-    <TargetFrameworkProfile />
+    <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(TargetFramework)' != 'netstandard2.0'">
+    <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
+    <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>$(SolutionDir)build\$(Configuration)\</OutputPath>
-    <BaseIntermediateOutputPath>$(SolutionDir)build\$(ProjectName).build\</BaseIntermediateOutputPath>
    <IntermediateOutputPath>$(BaseIntermediateOutputPath)$(Configuration)\</IntermediateOutputPath>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
@ -32,7 +36,6 @@
    <DebugType>pdbonly</DebugType>
    <Optimize>true</Optimize>
    <OutputPath>$(SolutionDir)build\$(Configuration)\</OutputPath>
-    <BaseIntermediateOutputPath>$(SolutionDir)build\$(ProjectName).build\</BaseIntermediateOutputPath>
    <IntermediateOutputPath>$(BaseIntermediateOutputPath)$(Configuration)\</IntermediateOutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
@ -47,9 +50,6 @@
  <PropertyGroup>
    <AssemblyOriginatorKeyFile>winfsp.net.snk</AssemblyOriginatorKeyFile>
  </PropertyGroup>
-  <ItemGroup>
-    <Reference Include="System" />
-  </ItemGroup>
  <ItemGroup>
    <Compile Include="..\..\..\src\dotnet\FileSystemBase+Const.cs">
      <Link>FileSystemBase+Const.cs</Link>
@ -70,29 +70,28 @@
  <ItemGroup>
    <None Include="winfsp.net.snk" />
  </ItemGroup>
-  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
-       Other similar extension points exist, see Microsoft.Common.targets.
-  <Target Name="AfterBuild">
-  </Target>
-  -->
-  <Target Name="BeforeBuild">
-    <ItemGroup>
-      <AssemblyInfo Include="using System.Reflection%3b" />
-      <AssemblyInfo Include="[assembly: AssemblyProduct(&quot;$(MyProductName)&quot;)]" />
-      <AssemblyInfo Include="[assembly: AssemblyTitle(&quot;$(MyDescription)&quot;)]" />
-      <AssemblyInfo Include="[assembly: AssemblyCompany(&quot;$(MyCompanyName)&quot;)]" />
-      <AssemblyInfo Include="[assembly: AssemblyCopyright(&quot;$(MyCopyright)&quot;)]" />
-      <AssemblyInfo Include="[assembly: AssemblyVersion(&quot;$(MyAssemblyVersion)&quot;)]" />
-      <AssemblyInfo Include="[assembly: AssemblyFileVersion(&quot;$(MyVersion)&quot;)]" />
+  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
+    <PackageReference Include="Microsoft.Win32.Registry">
+      <Version>5.0.0</Version>
+    </PackageReference>
+    <PackageReference Include="System.IO.FileSystem.AccessControl">
+      <Version>5.0.0</Version>
+    </PackageReference>
  </ItemGroup>
-    <MakeDir Directories="$(IntermediateOutputPath)" />
-    <WriteLinesToFile File="$(IntermediateOutputPath)AssemblyInfo.cs" Lines="@(AssemblyInfo)" Overwrite="true" />
-    <ItemGroup>
-      <Compile Include="$(IntermediateOutputPath)AssemblyInfo.cs" />
-      <FileWrites Include="$(IntermediateOutputPath)AssemblyInfo.cs" />
-    </ItemGroup>
-  </Target>
+  <PropertyGroup>
+    <AssemblyName>$(MyProductFileName)-msil</AssemblyName>
+    <AssemblyTitle>$(MyDescription)</AssemblyTitle>
+    <Product>$(MyProductName)</Product>
+    <Copyright>$(MyCopyright)</Copyright>
+    <AssemblyVersion>$(MyAssemblyVersion)</AssemblyVersion>
+    <FileVersion>$(MyVersion)</FileVersion>
+    <!-- NuGet metadata -->
+    <PackageId>$(MyProductFileName).net</PackageId>
+    <Version>$(MyVersion)</Version>
+    <Description>$(MyDescription)</Description>
+    <Authors>$(MyCopyright)</Authors>
+    <Company>$(MyCompanyName)</Company>
+  </PropertyGroup>
  <PropertyGroup>
    <PostBuildEvent>exit /b 0

@ -110,4 +109,5 @@ for /f "delims=" %25%25l in ($(ProjectDir)winfsp.net.policy.config) do (
 "$(MSBuildProgramFiles32)\Microsoft SDKs\Windows\v7.0A\Bin\al.exe" /product:"$(MyProductName)" /title:"$(MyDescription)" /company:"$(MyCompanyName)" /copyright:"$(MyCopyright)" /version:"$(MyAssemblyPolicyVersion)" /fileversion:"$(MyVersion)" /link:$(OutDir)policy.$(MyAssemblyPolicyVersion).$(TargetName).config /out:$(OutDir)policy.$(MyAssemblyPolicyVersion).$(TargetName).dll /keyfile:$(ProjectDir)$(ProjectName).snk
 </PostBuildEvent>
  </PropertyGroup>
+  <Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk" />
 </Project>
--- a/build/VStudio/installer/CustomActions/CustomActions.cpp
+++ b/build/VStudio/installer/CustomActions/CustomActions.cpp
@ -1,7 +1,7 @@
 /**
 * @file CustomActions.cpp
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/build/VStudio/testing/memfs-dotnet.csproj
+++ b/build/VStudio/testing/memfs-dotnet.csproj
@ -1,27 +1,30 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project>
+  <PropertyGroup>
+    <BaseIntermediateOutputPath>$(SolutionDir)build\$(MSBuildProjectName).build\</BaseIntermediateOutputPath>
+  </PropertyGroup>
+  <Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk" />
  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), build.common.props))/build.common.props" />
-  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
  <PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-    <ProjectGuid>{4920E350-D496-4652-AE98-6C4208AEC1D8}</ProjectGuid>
    <OutputType>Exe</OutputType>
    <ProjectName>memfs-dotnet</ProjectName>
-    <AppDesignerFolder>Properties</AppDesignerFolder>
    <RootNamespace>memfs</RootNamespace>
    <AssemblyName>memfs-dotnet-msil</AssemblyName>
-    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+    <TargetFramework>net452</TargetFramework>
    <FileAlignment>512</FileAlignment>
    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
  </PropertyGroup>
+  <PropertyGroup>
+    <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
+    <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
+  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <PlatformTarget>AnyCPU</PlatformTarget>
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>$(SolutionDir)build\$(Configuration)\</OutputPath>
-    <BaseIntermediateOutputPath>$(SolutionDir)build\$(ProjectName).build\</BaseIntermediateOutputPath>
    <IntermediateOutputPath>$(BaseIntermediateOutputPath)$(Configuration)\</IntermediateOutputPath>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
@ -33,32 +36,16 @@
    <DebugType>pdbonly</DebugType>
    <Optimize>true</Optimize>
    <OutputPath>$(SolutionDir)build\$(Configuration)\</OutputPath>
-    <BaseIntermediateOutputPath>$(SolutionDir)build\$(ProjectName).build\</BaseIntermediateOutputPath>
    <IntermediateOutputPath>$(BaseIntermediateOutputPath)$(Configuration)\</IntermediateOutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <ItemGroup>
-    <Reference Include="System" />
+    <ProjectReference Include="..\dotnet\winfsp.net.csproj" />
  </ItemGroup>
  <ItemGroup>
-    <Compile Include="..\..\..\tst\memfs-dotnet\Program.cs">
-      <Link>Program.cs</Link>
-    </Compile>
+    <Compile Include="..\..\..\tst\memfs-dotnet\Program.cs" />
  </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="..\dotnet\winfsp.net.csproj">
-      <Project>{94580219-cc8d-4fe5-a3be-437b0b3481e1}</Project>
-      <Name>winfsp.net</Name>
-    </ProjectReference>
-  </ItemGroup>
-  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
-       Other similar extension points exist, see Microsoft.Common.targets.
-  <Target Name="BeforeBuild">
-  </Target>
-  <Target Name="AfterBuild">
-  </Target>
-  -->
+  <Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk" />
 </Project>
--- a/build/VStudio/winfsp_sys.vcxproj
+++ b/build/VStudio/winfsp_sys.vcxproj
@ -291,6 +291,9 @@
      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">set DriverFile=$(TargetFileName)
 set Provider="$(MyCompanyName)"
 set CatalogFile=driver-$(MyProductFileArch).cat
+if "$(MyProductFileArch)"=="a64" set ArchDecoration=ntarm64
+if "$(MyProductFileArch)"=="x64" set ArchDecoration=ntamd64
+if "$(MyProductFileArch)"=="x86" set ArchDecoration=ntx86

 setlocal EnableDelayedExpansion
 if exist $(OutDir)driver-$(MyProductFileArch).inf del $(OutDir)driver-$(MyProductFileArch).inf
@ -304,6 +307,9 @@ stampinf -d * -v $(MyVersion) -f $(OutDir)driver-$(MyProductFileArch).inf</Comma
      <Command Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">set DriverFile=$(TargetFileName)
 set Provider="$(MyCompanyName)"
 set CatalogFile=driver-$(MyProductFileArch).cat
+if "$(MyProductFileArch)"=="a64" set ArchDecoration=ntarm64
+if "$(MyProductFileArch)"=="x64" set ArchDecoration=ntamd64
+if "$(MyProductFileArch)"=="x86" set ArchDecoration=ntx86

 setlocal EnableDelayedExpansion
 if exist $(OutDir)driver-$(MyProductFileArch).inf del $(OutDir)driver-$(MyProductFileArch).inf
@ -317,6 +323,9 @@ stampinf -d * -v $(MyVersion) -f $(OutDir)driver-$(MyProductFileArch).inf</Comma
      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">set DriverFile=$(TargetFileName)
 set Provider="$(MyCompanyName)"
 set CatalogFile=driver-$(MyProductFileArch).cat
+if "$(MyProductFileArch)"=="a64" set ArchDecoration=ntarm64
+if "$(MyProductFileArch)"=="x64" set ArchDecoration=ntamd64
+if "$(MyProductFileArch)"=="x86" set ArchDecoration=ntx86

 setlocal EnableDelayedExpansion
 if exist $(OutDir)driver-$(MyProductFileArch).inf del $(OutDir)driver-$(MyProductFileArch).inf
@ -329,6 +338,9 @@ stampinf -d * -v $(MyVersion) -f $(OutDir)driver-$(MyProductFileArch).inf</Comma
      <Command Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">set DriverFile=$(TargetFileName)
 set Provider="$(MyCompanyName)"
 set CatalogFile=driver-$(MyProductFileArch).cat
+if "$(MyProductFileArch)"=="a64" set ArchDecoration=ntarm64
+if "$(MyProductFileArch)"=="x64" set ArchDecoration=ntamd64
+if "$(MyProductFileArch)"=="x86" set ArchDecoration=ntx86

 setlocal EnableDelayedExpansion
 if exist $(OutDir)driver-$(MyProductFileArch).inf del $(OutDir)driver-$(MyProductFileArch).inf
@ -343,6 +355,9 @@ stampinf -d * -v $(MyVersion) -f $(OutDir)driver-$(MyProductFileArch).inf</Comma
      <Command Condition="'$(Configuration)|$(Platform)'=='Release|x64'">set DriverFile=$(TargetFileName)
 set Provider="$(MyCompanyName)"
 set CatalogFile=driver-$(MyProductFileArch).cat
+if "$(MyProductFileArch)"=="a64" set ArchDecoration=ntarm64
+if "$(MyProductFileArch)"=="x64" set ArchDecoration=ntamd64
+if "$(MyProductFileArch)"=="x86" set ArchDecoration=ntx86

 setlocal EnableDelayedExpansion
 if exist $(OutDir)driver-$(MyProductFileArch).inf del $(OutDir)driver-$(MyProductFileArch).inf
@ -355,6 +370,9 @@ stampinf -d * -v $(MyVersion) -f $(OutDir)driver-$(MyProductFileArch).inf</Comma
      <Command Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">set DriverFile=$(TargetFileName)
 set Provider="$(MyCompanyName)"
 set CatalogFile=driver-$(MyProductFileArch).cat
+if "$(MyProductFileArch)"=="a64" set ArchDecoration=ntarm64
+if "$(MyProductFileArch)"=="x64" set ArchDecoration=ntamd64
+if "$(MyProductFileArch)"=="x86" set ArchDecoration=ntx86

 setlocal EnableDelayedExpansion
 if exist $(OutDir)driver-$(MyProductFileArch).inf del $(OutDir)driver-$(MyProductFileArch).inf
--- a/doc/Frequently-Asked-Questions.asciidoc
+++ b/doc/Frequently-Asked-Questions.asciidoc
@ -6,18 +6,17 @@

 I am running Windows 7 and I am finding that the installed driver is not signed.::

-    Your Windows 7 OS is missing SHA-2 Code Signing Support. You need to install the following security advisory that will rectify the problem:
-    https://technet.microsoft.com/en-us/library/security/3033929.aspx
+    Your Windows 7 OS is missing SHA-2 Code Signing Support. Make sure it is fully updated.
+
+
+I cannot run a program located in a WinFsp drive as administrator. I cannot run `regedit.exe` from within a WinFsp drive.::
+
+    When running an executable as administrator, the Windows OS seems to require that the name of the file system that is housing the executable is "NTFS". For example, the MEMFS file system with the command line `memfs-x64.exe -i -F NTFS -m X:` works.


 Disconnecting (unmapping) a network drive does not work.::

-    You may have Dokany installed. Dokany installs its own Network Provider DLL that unfortunately interferes with the WinFsp handling of network drives. The solution is to change your system's Network Provider order and ensure that the WinFsp Network Provider runs before the Dokany one. Instructions on how to change the Network Provider order can be found in this http://blogs.interfacett.com/changing-the-network-provider-order-in-windows-10[article].
-
-
-Case-sensitive file systems do not work properly when mounted as a directory.::
-
-    This is fixed as of WinFsp 2018.2 B3.
+    You may have Dokany installed. Dokany installs its own Network Provider DLL that unfortunately interferes with the WinFsp handling of network drives. The solution is to change your system's Network Provider order and ensure that the WinFsp Network Provider runs before the Dokany one. Instructions on how to change the Network Provider order can be found in this https://www.interfacett.com/blogs/changing-the-network-provider-order-in-windows-10/[article].


 Why is the DLL not installed in the Windows system directories?::
@ -29,7 +28,7 @@ There are a few alternative methods to overcome this problem. WinFsp recommends

 Does WinFsp provide debugging symbols?::

-    Public debugging symbols are already included in the installer. You need to install the "Developer" feature; the symbols can be found in the `sym` directory under the WinFsp installation directory.
+    Debugging symbols can be found in the https://github.com/winfsp/winfsp.sym repository.


 Is there a maximum number of concurrent file systems?::
@ -61,11 +60,6 @@ With this in mind here are the reasons for the current WinFsp-FUSE behavior:
 - Most importantly: inability to guarantee that the mount point will cease to exist if the file system crashes. WinFsp attempts to guarantee that all resources used by a file system will get cleaned up. This is certainly true for the kernel-mode FSD, but an attempt is made to do so also in user mode. For this reason, drive symbolic links are marked as temporary and (importantly for our discussion) mount directories are opened with `FILE_FLAG_DELETE_ON_CLOSE`. There is no way to guarantee the removal of a reparse point in the same way.


-WinFsp-FUSE does not have the ability to support multiple file systems from within the same process. Why?::
-
-    This is supported as of WinFsp 2018.2 B2.
-
-
 I have problems getting permissions to work properly in a WinFsp-FUSE file system. Can you help?::

    The WinFsp-FUSE layer includes a built-in command line option that can help: `-o uid=-1`. This instructs the WinFsp-FUSE layer to present all file system files as if they are owned by the user that launched the file system.
--- a/doc/Known-File-Systems.asciidoc
+++ b/doc/Known-File-Systems.asciidoc
@ -30,7 +30,6 @@ This document contains a list of known open-source file systems and file system
 - https://github.com/winfsp/cgofuse[Go: cgofuse] - Cross-platform FUSE library for Go
 - https://github.com/SerCeMan/jnr-fuse[Java: jnr-fuse] - FUSE implementation in Java using Java Native Runtime (JNR)
 - https://github.com/jnr-winfsp-team/jnr-winfsp[Java: jnr-winfsp] - A Java binding for WinFsp using Java Native Runtime (JNR)
- https://github.com/DuroSoft/fuse-bindings[Nodejs: fuse-bindings] - Fully maintained FUSE bindings for Node that aims to cover the entire FUSE api
 - https://github.com/billziss-gh/fusepy[Python: fusepy] - Simple ctypes bindings for FUSE
 - https://github.com/pleiszenburg/refuse[Python: refuse] - Simple cross-plattform ctypes bindings for libfuse / FUSE for macOS / WinFsp
 - https://github.com/Scille/winfspy[Python: winfspy] - WinFSP binding for Python
--- a/doc/WinFsp-Registry-Settings.md
+++ b/doc/WinFsp-Registry-Settings.md
@ -65,6 +65,8 @@ Primary registry key used to store WinFsp settings. On a 64-bit system (x64 or A

 * `InstallDir (REG_SZ)`: Contains the WinFsp installation directory.

+* `SxsDir (REG_SZ)`: Contains the WinFsp Side-by-Side (SxS) directory. The SxS directory allows for multiple versions of WinFsp to be active at the same time and among other benefits it enables reinstalling WinFsp without reboot. The SxS directory contains primarily executable files.
+
 * `DistinctPermsForSameOwnerGroup (REG_DWORD)`: Directs how WinFsp-FUSE should consider UNIX owner and group permissions in the case when the Windows owner and group SID are the same (for example, this can happen when someone uses a Microsoft account as their primary login). When this setting is 0 and the Windows owner and group SID are the same, WinFsp-FUSE combines the UNIX owner and group permissions (for example, user permission `rw-` and group permission `---` combine to `---`), which can result in inadvertent "access denied" errors. When this setting is 1 and even if the Windows owner and group SID are the same, WinFsp-FUSE looks at the UNIX owner permissions and the UNIX group permissions separately. The default value is 1 since v1.11B1 and was 0 in earlier versions.

 * `MountBroadcastDriveChange (REG_DWORD)`: A value of 1 instructs WinFsp to broadcast an additional "drive change" message to all top-level windows during mounting and unmounting. The default value is 0. Normally the Windows infrastructure broadcasts a `WM_DEVICECHANGE` message whenever a drive gets added/removed. In some rare systems it is possible for this message to get lost or stalled. The workaround for these rare systems is to enable this registry setting, in which case WinFsp will broadcast the `WM_DEVICECHANGE` using a slightly different but more reliable method than the one Windows uses.
--- a/ext/tlib/callstack.c
+++ b/ext/tlib/callstack.c
@ -1,7 +1,7 @@
 /**
 * @file tlib/callstack.c
 *
- * @copyright 2014-2022 Bill Zissimopoulos
+ * @copyright 2014-2024 Bill Zissimopoulos
 */

 #include <tlib/callstack.h>
--- a/ext/tlib/callstack.h
+++ b/ext/tlib/callstack.h
@ -1,7 +1,7 @@
 /**
 * @file tlib/callstack.h
 *
- * @copyright 2014-2022 Bill Zissimopoulos
+ * @copyright 2014-2024 Bill Zissimopoulos
 */

 #ifndef TLIB_CALLSTACK_H_INCLUDED
--- a/ext/tlib/injected/allfunc.h
+++ b/ext/tlib/injected/allfunc.h
@ -1,7 +1,7 @@
 /**
 * @file tlib/injected/allfunc.h
 *
- * @copyright 2014-2022 Bill Zissimopoulos
+ * @copyright 2014-2024 Bill Zissimopoulos
 */

 #ifndef TLIB_INJECTED_ALLFUNC_H_INCLUDED
--- a/ext/tlib/injected/curlfunc.c
+++ b/ext/tlib/injected/curlfunc.c
@ -1,7 +1,7 @@
 /**
 * @file tlib/injected/curlfunc.c
 *
- * @copyright 2014-2022 Bill Zissimopoulos
+ * @copyright 2014-2024 Bill Zissimopoulos
 */

 #include <tlib/injected/curlfunc.h>
--- a/ext/tlib/injected/curlfunc.h
+++ b/ext/tlib/injected/curlfunc.h
@ -1,7 +1,7 @@
 /**
 * @file tlib/injected/curlfunc.h
 *
- * @copyright 2014-2022 Bill Zissimopoulos
+ * @copyright 2014-2024 Bill Zissimopoulos
 */

 #ifndef TLIB_INJECTED_CURLFUNC_H_INCLUDED
--- a/ext/tlib/injected/stdfunc.c
+++ b/ext/tlib/injected/stdfunc.c
@ -1,7 +1,7 @@
 /**
 * @file tlib/injected/stdfunc.c
 *
- * @copyright 2014-2022 Bill Zissimopoulos
+ * @copyright 2014-2024 Bill Zissimopoulos
 */

 #include <tlib/injected/stdfunc.h>
--- a/ext/tlib/injected/stdfunc.h
+++ b/ext/tlib/injected/stdfunc.h
@ -1,7 +1,7 @@
 /**
 * @file tlib/injected/stdfunc.h
 *
- * @copyright 2014-2022 Bill Zissimopoulos
+ * @copyright 2014-2024 Bill Zissimopoulos
 */

 #ifndef TLIB_INJECTED_STDFUNC_H_INCLUDED
--- a/ext/tlib/injection.c
+++ b/ext/tlib/injection.c
@ -1,7 +1,7 @@
 /**
 * @file tlib/injection.c
 *
- * @copyright 2014-2022 Bill Zissimopoulos
+ * @copyright 2014-2024 Bill Zissimopoulos
 */

 #include <tlib/injection.h>
--- a/ext/tlib/injection.h
+++ b/ext/tlib/injection.h
@ -1,7 +1,7 @@
 /**
 * @file tlib/injection.h
 *
- * @copyright 2014-2022 Bill Zissimopoulos
+ * @copyright 2014-2024 Bill Zissimopoulos
 */

 /* NOTE: This header may usefully be included multiple times.
--- a/ext/tlib/testsuite.c
+++ b/ext/tlib/testsuite.c
@ -1,7 +1,7 @@
 /**
 * @file tlib/testsuite.c
 *
- * @copyright 2014-2022 Bill Zissimopoulos
+ * @copyright 2014-2024 Bill Zissimopoulos
 */

 #include <tlib/testsuite.h>
--- a/ext/tlib/testsuite.h
+++ b/ext/tlib/testsuite.h
@ -1,7 +1,7 @@
 /**
 * @file tlib/testsuite.h
 *
- * @copyright 2014-2022 Bill Zissimopoulos
+ * @copyright 2014-2024 Bill Zissimopoulos
 */

 #ifndef TLIB_TESTSUITE_H_INCLUDED
--- a/inc/fuse/fuse.h
+++ b/inc/fuse/fuse.h
@ -6,7 +6,7 @@
 *     FUSE: Filesystem in Userspace
 *     Copyright (C) 2001-2007  Miklos Szeredi <miklos@szeredi.hu>
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/inc/fuse/fuse_common.h
+++ b/inc/fuse/fuse_common.h
@ -6,7 +6,7 @@
 *     FUSE: Filesystem in Userspace
 *     Copyright (C) 2001-2007  Miklos Szeredi <miklos@szeredi.hu>
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/inc/fuse/fuse_opt.h
+++ b/inc/fuse/fuse_opt.h
@ -6,7 +6,7 @@
 *     FUSE: Filesystem in Userspace
 *     Copyright (C) 2001-2007  Miklos Szeredi <miklos@szeredi.hu>
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/inc/fuse/winfsp_fuse.h
+++ b/inc/fuse/winfsp_fuse.h
@ -2,7 +2,7 @@
 * @file fuse/winfsp_fuse.h
 * WinFsp FUSE compatible API.
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -27,6 +27,7 @@
 #include <stdint.h>
 #if !defined(WINFSP_DLL_INTERNAL)
 #include <stdlib.h>
+#include <string.h>
 #endif

 #ifdef __cplusplus
--- a/inc/fuse3/fuse.h
+++ b/inc/fuse3/fuse.h
@ -6,7 +6,7 @@
 *     FUSE: Filesystem in Userspace
 *     Copyright (C) 2001-2007  Miklos Szeredi <miklos@szeredi.hu>
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/inc/fuse3/fuse_common.h
+++ b/inc/fuse3/fuse_common.h
@ -6,7 +6,7 @@
 *     FUSE: Filesystem in Userspace
 *     Copyright (C) 2001-2007  Miklos Szeredi <miklos@szeredi.hu>
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/inc/fuse3/fuse_opt.h
+++ b/inc/fuse3/fuse_opt.h
@ -2,7 +2,7 @@
 * @file fuse3/fuse_opt.h
 * WinFsp FUSE3 compatible API.
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/inc/fuse3/winfsp_fuse.h
+++ b/inc/fuse3/winfsp_fuse.h
@ -2,7 +2,7 @@
 * @file fuse3/winfsp_fuse.h
 * WinFsp FUSE3 compatible API.
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/inc/winfsp/fsctl.h
+++ b/inc/winfsp/fsctl.h
@ -1,7 +1,7 @@
 /**
 * @file winfsp/fsctl.h
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -696,6 +696,7 @@ FSP_API NTSTATUS FspFsctlNotify(HANDLE VolumeHandle,
 FSP_API NTSTATUS FspFsctlGetVolumeList(PWSTR DevicePath,
    PWCHAR VolumeListBuf, PSIZE_T PVolumeListSize);
 FSP_API NTSTATUS FspFsctlPreflight(PWSTR DevicePath);
+FSP_API NTSTATUS FspFsctlServiceVersion(PUINT32 PVersion);
 FSP_API NTSTATUS FspFsctlStartService(VOID);
 FSP_API NTSTATUS FspFsctlStopService(VOID);
 FSP_API NTSTATUS FspFsctlEnumServices(
--- a/inc/winfsp/launch.h
+++ b/inc/winfsp/launch.h
@ -5,7 +5,7 @@
 * In order to use the WinFsp Launch API a program must include &lt;winfsp/launch.h&gt;
 * and link with the winfsp_x64.dll (or winfsp_x86.dll) library.
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/inc/winfsp/winfsp.h
+++ b/inc/winfsp/winfsp.h
@ -5,7 +5,7 @@
 * In order to use the WinFsp API the user mode file system must include &lt;winfsp/winfsp.h&gt;
 * and link with the winfsp_x64.dll (or winfsp_x86.dll) library.
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -1047,6 +1047,41 @@ typedef struct _FSP_FILE_SYSTEM_INTERFACE

    NTSTATUS (*Obsolete0)(VOID);

+    /**
+     * Inform the file system that its dispatcher has been stopped.
+     *
+     * Prior to WinFsp v2.0 the FSD would never unmount a file system volume unless
+     * the user mode file system requested the unmount. Since WinFsp v2.0 it is possible
+     * for the FSD to unmount a file system volume without an explicit user mode file system
+     * request. For example, this happens when the FSD is being uninstalled.
+     *
+     * A user mode file system can use this operation to determine when its dispatcher
+     * has been stopped. The Normally parameter can be used to determine why the dispatcher
+     * was stopped: it is TRUE when the file system is being stopped via
+     * FspFileSystemStopDispatcher and FALSE otherwise.
+     *
+     * When the file system receives a request with Normally == TRUE it need not take any
+     * extra steps. This case is the same as for pre-v2.0 versions: since the file system
+     * stopped the dispatcher via FspFileSystemStopDispatcher, it will likely exit its
+     * process soon.
+     *
+     * When the file system receives a request with Normally == FALSE it may need to take
+     * extra steps to exit its process as this is not done by default.
+     *
+     * A file system that uses the FspService infrastructure may use the
+     * FspFileSystemStopServiceIfNecessary API to correctly handle all cases.
+     *
+     * This operation is the last one that a file system will receive.
+     *
+     * @param FileSystem
+     *     The file system on which this request is posted.
+     * @param Normally
+     *     TRUE if the file system is being stopped via FspFileSystemStopDispatcher.
+     *     FALSE if the file system is being stopped because of another reason such
+     *     as driver unload/uninstall.
+     * @see
+     *     FspFileSystemStopServiceIfNecessary
+     */
    VOID (*DispatcherStopped)(FSP_FILE_SYSTEM *FileSystem,
        BOOLEAN Normally);

@ -1112,7 +1147,7 @@ FSP_API NTSTATUS FspFileSystemPreflight(PWSTR DevicePath,
 * @param VolumeParams
 *     Volume parameters for the newly created file system.
 * @param Interface
- *     A pointer to the actual operations that actually implement this user mode file system.
+ *     A pointer to the operations that implement this user mode file system.
 * @param PFileSystem [out]
 *     Pointer that will receive the file system object created on successful return from this
 *     call.
@ -1750,6 +1785,23 @@ UINT32 FspFileSystemGetEaPackedSize(PFILE_FULL_EA_INFORMATION SingleEa)
 */
 FSP_API BOOLEAN FspFileSystemAddNotifyInfo(FSP_FSCTL_NOTIFY_INFO *NotifyInfo,
    PVOID Buffer, ULONG Length, PULONG PBytesTransferred);
+/**
+ * Stop a file system service, if any.
+ *
+ * This is a helper for implementing the DispatcherStopped operation, but only for file systems
+ * that use the FspService infrastructure.
+ *
+ * @param FileSystem
+ *     The file system object.
+ * @param Normally
+ *     TRUE if the file system is being stopped via FspFileSystemStopDispatcher.
+ *     FALSE if the file system is being stopped because of another reason such
+ *     as driver unload/uninstall.
+ * @see
+ *     DispatcherStopped
+ */
+FSP_API VOID FspFileSystemStopServiceIfNecessary(FSP_FILE_SYSTEM *FileSystem,
+    BOOLEAN Normally);

 /*
 * Directory buffering
@ -2047,6 +2099,8 @@ FSP_API ULONG FspServiceGetExitCode(FSP_SERVICE *Service);
 * to connect the service process to the Service Control Manager. If the Service Control Manager is
 * not available (and console mode is allowed) it will enter console mode.
 *
+ * This function should be called once per process.
+ *
 * @param Service
 *     The service object.
 * @return
--- a/inc/winfsp/winfsp.hpp
+++ b/inc/winfsp/winfsp.hpp
@ -2,7 +2,7 @@
 * @file winfsp/winfsp.hpp
 * WinFsp C++ Layer.
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/debug.c
+++ b/src/dll/debug.c
@ -1,7 +1,7 @@
 /**
 * @file dll/debug.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/debuglog.c
+++ b/src/dll/debuglog.c
@ -1,7 +1,7 @@
 /**
 * @file dll/debuglog.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/dirbuf.c
+++ b/src/dll/dirbuf.c
@ -1,7 +1,7 @@
 /**
 * @file dll/dirbuf.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/eventlog.c
+++ b/src/dll/eventlog.c
@ -1,7 +1,7 @@
 /**
 * @file dll/eventlog.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/fs.c
+++ b/src/dll/fs.c
@ -1,7 +1,7 @@
 /**
 * @file dll/fs.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -406,6 +406,11 @@ FSP_API NTSTATUS FspFileSystemStartDispatcher(FSP_FILE_SYSTEM *FileSystem, ULONG
    if (0 == FileSystem->DispatcherThread)
        return FspNtStatusFromWin32(GetLastError());

+#if defined(FSP_CFG_REJECT_EARLY_IRP)
+    FspFsctlTransact(FileSystem->VolumeHandle, 0, 0, 0, 0, FALSE);
+        /* send a Transact0 to inform the FSD that the dispatcher is _almost_ ready */
+#endif
+
    return STATUS_SUCCESS;
 }

--- a/src/dll/fsctl.c
+++ b/src/dll/fsctl.c
@ -1,7 +1,7 @@
 /**
 * @file dll/fsctl.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -31,8 +31,6 @@ static ULONG FspFsctlServiceVersionValue;
 static DWORD FspFsctlTransactCode = FSP_FSCTL_TRANSACT;
 static DWORD FspFsctlTransactBatchCode = FSP_FSCTL_TRANSACT_BATCH;

-static VOID FspFsctlServiceVersion(PUINT32 PVersion);
-
 FSP_API NTSTATUS FspFsctlCreateVolume(PWSTR DevicePath,
    const FSP_FSCTL_VOLUME_PARAMS *VolumeParams,
    PWCHAR VolumeNameBuf, SIZE_T VolumeNameSize,
@ -423,15 +421,33 @@ exit:
    return TRUE;
 }

-static VOID FspFsctlServiceVersion(PUINT32 PVersion)
+FSP_API NTSTATUS FspFsctlServiceVersion(PUINT32 PVersion)
 {
    InitOnceExecuteOnce(&FspFsctlServiceVersionInitOnce, FspFsctlServiceVersionInitialize, 0, 0);

    if (0 != PVersion)
        *PVersion = FspFsctlServiceVersionValue;
+
+    return 0 != FspFsctlServiceVersionValue ? STATUS_SUCCESS : STATUS_UNSUCCESSFUL;
 }

-static SRWLOCK FspFsctlStartStopServiceLock = SRWLOCK_INIT;
+static FSP_ADAPTIVE_LOCK FspFsctlStartStopServiceLock = FSP_ADAPTIVE_LOCK_INIT;
+static VOID FspFsctlStartStopServiceLockAcquire(VOID)
+{
+    extern HINSTANCE DllInstance;
+    WCHAR DllPath[MAX_PATH];
+    PWSTR FileName = 0;
+
+    if (0 != GetModuleFileNameW(DllInstance, DllPath, MAX_PATH))
+        FileName = DllPath;
+
+    FspAdaptiveLockAcquire(&FspFsctlStartStopServiceLock,
+        FileName, 0xfffffffffffffff0ull, (10 + 1) * 1000);
+}
+static VOID FspFsctlStartStopServiceLockRelease(VOID)
+{
+    FspAdaptiveLockRelease(&FspFsctlStartStopServiceLock);
+}

 static BOOLEAN FspFsctlRunningInContainer(VOID)
 {
@ -455,7 +471,7 @@ static NTSTATUS FspFsctlStartServiceByName(PWSTR DriverName)
    DWORD LastError;
    NTSTATUS Result;

-    AcquireSRWLockExclusive(&FspFsctlStartStopServiceLock);
+    FspFsctlStartStopServiceLockAcquire();

    if (FspFsctlRunningInContainer())
    {
@ -517,7 +533,7 @@ exit:
    if (0 != ScmHandle)
        CloseServiceHandle(ScmHandle);

-    ReleaseSRWLockExclusive(&FspFsctlStartStopServiceLock);
+    FspFsctlStartStopServiceLockRelease();

    return Result;
 }
@ -587,7 +603,7 @@ FSP_API NTSTATUS FspFsctlStopService(VOID)

    FspSxsAppendSuffix(DriverName, sizeof DriverName, L"" FSP_FSCTL_DRIVER_NAME);

-    AcquireSRWLockExclusive(&FspFsctlStartStopServiceLock);
+    FspFsctlStartStopServiceLockAcquire();

    if (FspFsctlRunningInContainer())
    {
@ -659,7 +675,7 @@ exit:
    if (0 != ProcessToken)
        CloseHandle(ProcessToken);

-    ReleaseSRWLockExclusive(&FspFsctlStartStopServiceLock);
+    FspFsctlStartStopServiceLockRelease();

    return Result;
 }
--- a/src/dll/fsop.c
+++ b/src/dll/fsop.c
@ -1,7 +1,7 @@
 /**
 * @file dll/fsop.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -1883,3 +1883,12 @@ FSP_API BOOLEAN FspFileSystemAddNotifyInfo(FSP_FSCTL_NOTIFY_INFO *NotifyInfo,
 {
    return FspFileSystemAddXxxInfo(NotifyInfo, Buffer, Length, PBytesTransferred);
 }
+
+FSP_API VOID FspFileSystemStopServiceIfNecessary(FSP_FILE_SYSTEM *FileSystem,
+    BOOLEAN Normally)
+{
+    /* NOTE: .NET calls us with a zero FileSystem pointer! */
+    if (Normally)
+        return;
+    FspServiceStopLoop();
+}
--- a/src/dll/fuse/fuse.c
+++ b/src/dll/fuse/fuse.c
@ -1,7 +1,7 @@
 /**
 * @file dll/fuse/fuse.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/fuse/fuse_compat.c
+++ b/src/dll/fuse/fuse_compat.c
@ -1,7 +1,7 @@
 /**
 * @file dll/fuse/fuse_compat.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/fuse/fuse_intf.c
+++ b/src/dll/fuse/fuse_intf.c
@ -1,7 +1,7 @@
 /**
 * @file dll/fuse/fuse_intf.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -1939,7 +1939,7 @@ int fsp_fuse_intf_AddDirInfo(void *buf, const char *name,
    }

    SizeA = lstrlenA(name);
-    if (SizeA > 255)
+    if (SizeA > 255 * 4)
    {
        fsp_fuse_intf_LogBadDirInfo(filedesc->PosixPath, name,
            "too long");
@ -1949,6 +1949,13 @@ int fsp_fuse_intf_AddDirInfo(void *buf, const char *name,
    SizeW = MultiByteToWideChar(CP_UTF8, 0, name, SizeA, DirInfo->FileNameBuf, 255);
    if (0 == SizeW)
    {
+        if (ERROR_INSUFFICIENT_BUFFER == GetLastError())
+        {
+            fsp_fuse_intf_LogBadDirInfo(filedesc->PosixPath, name,
+                "too long");
+            return 0;
+        }
+
        fsp_fuse_intf_LogBadDirInfo(filedesc->PosixPath, name,
            "MultiByteToWideChar failed");
        return 0;
@ -1991,7 +1998,7 @@ static NTSTATUS fsp_fuse_intf_FixDirInfo(FSP_FILE_SYSTEM *FileSystem,
    NTSTATUS Result;

    SizeA = lstrlenA(filedesc->PosixPath);
-    PosixPath = MemAlloc(SizeA + 1 + 255 + 1);
+    PosixPath = MemAlloc(SizeA + 1 + 255 * 4 + 1);
    if (0 == PosixPath)
    {
        Result = STATUS_INSUFFICIENT_RESOURCES;
@ -2040,7 +2047,7 @@ static NTSTATUS fsp_fuse_intf_FixDirInfo(FSP_FILE_SYSTEM *FileSystem,
            else
            {
                PosixPathEnd = 0;
-                SizeA = WideCharToMultiByte(CP_UTF8, 0, DirInfo->FileNameBuf, SizeW, PosixName, 255, 0, 0);
+                SizeA = WideCharToMultiByte(CP_UTF8, 0, DirInfo->FileNameBuf, SizeW, PosixName, 255 * 4, 0, 0);
                if (0 == SizeA)
                {
                    /* this should never happen because we just converted using MultiByteToWideChar */
@ -2628,6 +2635,17 @@ static NTSTATUS fsp_fuse_intf_SetEa(FSP_FILE_SYSTEM *FileSystem,
        &Uid, &Gid, &Mode, FileInfo);
 }

+static VOID fsp_fuse_intf_DispatcherStopped(FSP_FILE_SYSTEM *FileSystem,
+    BOOLEAN Normally)
+{
+    if (Normally)
+        return;
+
+    struct fuse *f = FileSystem->UserContext;
+
+    fsp_fuse_exit(f->env, f);
+}
+
 FSP_FILE_SYSTEM_INTERFACE fsp_fuse_intf =
 {
    fsp_fuse_intf_GetVolumeInfo,
@ -2661,6 +2679,8 @@ FSP_FILE_SYSTEM_INTERFACE fsp_fuse_intf =
    fsp_fuse_intf_Overwrite,
    fsp_fuse_intf_GetEa,
    fsp_fuse_intf_SetEa,
+    0,
+    fsp_fuse_intf_DispatcherStopped,
 };

 /*
--- a/src/dll/fuse/fuse_loop.c
+++ b/src/dll/fuse/fuse_loop.c
@ -1,7 +1,7 @@
 /**
 * @file dll/fuse/fuse_loop.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/fuse/fuse_main.c
+++ b/src/dll/fuse/fuse_main.c
@ -1,7 +1,7 @@
 /**
 * @file dll/fuse/fuse_main.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/fuse/fuse_opt.c
+++ b/src/dll/fuse/fuse_opt.c
@ -1,7 +1,7 @@
 /**
 * @file dll/fuse/fuse_opt.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/fuse/library.h
+++ b/src/dll/fuse/library.h
@ -1,7 +1,7 @@
 /**
 * @file dll/fuse/library.h
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/fuse3/fuse2to3.c
+++ b/src/dll/fuse3/fuse2to3.c
@ -1,7 +1,7 @@
 /**
 * @file dll/fuse3/fuse2to3.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/fuse3/fuse3.c
+++ b/src/dll/fuse3/fuse3.c
@ -1,7 +1,7 @@
 /**
 * @file dll/fuse3/fuse3.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/fuse3/fuse3_compat.c
+++ b/src/dll/fuse3/fuse3_compat.c
@ -1,7 +1,7 @@
 /**
 * @file dll/fuse/fuse3_compat.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/fuse3/library.h
+++ b/src/dll/fuse3/library.h
@ -1,7 +1,7 @@
 /**
 * @file dll/fuse3/library.h
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/launch.c
+++ b/src/dll/launch.c
@ -1,7 +1,7 @@
 /**
 * @file dll/launch.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/ldap.c
+++ b/src/dll/ldap.c
@ -1,7 +1,7 @@
 /**
 * @file dll/ldap.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/library.c
+++ b/src/dll/library.c
@ -1,7 +1,7 @@
 /**
 * @file dll/library.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/library.h
+++ b/src/dll/library.h
@ -1,7 +1,7 @@
 /**
 * @file dll/library.h
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -106,10 +106,26 @@ NTSTATUS FspGetModuleFileName(
    ULONG Size,
    PWSTR RelativePath);

+typedef struct
+{
+    SRWLOCK Lock;
+    HANDLE Handle;
+    UINT64 Offset;
+} FSP_ADAPTIVE_LOCK;
+#define FSP_ADAPTIVE_LOCK_INIT          { SRWLOCK_INIT, INVALID_HANDLE_VALUE, 0 }
+VOID FspAdaptiveLockAcquire(
+    FSP_ADAPTIVE_LOCK *Lock,
+    PWSTR FileName,
+    UINT64 Offset,
+    DWORD Timeout);
+VOID FspAdaptiveLockRelease(
+    FSP_ADAPTIVE_LOCK *Lock);
+
 #define FspFileSystemDirectoryBufferEntryInvalid ((ULONG)-1)
 VOID FspFileSystemPeekInDirectoryBuffer(PVOID *PDirBuffer,
    PUINT8 *PBuffer, PULONG *PIndex, PULONG PCount);

+VOID FspServiceStopLoop(VOID);
 BOOL WINAPI FspServiceConsoleCtrlHandler(DWORD CtrlType);

 static inline ULONG FspPathSuffixIndex(PWSTR FileName)
--- a/src/dll/mount.c
+++ b/src/dll/mount.c
@ -1,7 +1,7 @@
 /**
 * @file dll/mount.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -21,6 +21,7 @@

 #include <dll/library.h>
 #include <dbt.h>
+#include <shlobj.h>

 static INIT_ONCE FspMountInitOnce = INIT_ONCE_STATIC_INIT;
 static NTSTATUS (NTAPI *FspNtOpenSymbolicLinkObject)(
@ -350,6 +351,19 @@ exit:
    return Result;
 }

+static VOID FspMountNotifyShellDriveChange(VOID)
+{
+    HRESULT HResult;
+    LPITEMIDLIST Pidl;
+
+    HResult = SHGetKnownFolderIDList(&FOLDERID_ComputerFolder, KF_FLAG_DEFAULT, 0, &Pidl);
+    if (SUCCEEDED(HResult))
+    {
+        SHChangeNotify(SHCNE_UPDATEDIR, SHCNF_IDLIST, Pidl, 0);
+        CoTaskMemFree(Pidl);
+    }
+}
+
 static NTSTATUS FspMountSet_Drive(PWSTR VolumeName, PWSTR MountPoint, PHANDLE PMountHandle)
 {
    NTSTATUS Result;
@ -568,7 +582,7 @@ static NTSTATUS FspMountRemove_Directory(HANDLE MountHandle)
    return CloseHandle(MountHandle) ? STATUS_SUCCESS : FspNtStatusFromWin32(GetLastError());
 }

-FSP_API NTSTATUS FspMountSet(FSP_MOUNT_DESC *Desc)
+NTSTATUS FspMountSet_Internal(FSP_MOUNT_DESC *Desc)
 {
    InitOnceExecuteOnce(&FspMountInitOnce, FspMountInitialize, 0, 0);

@ -609,7 +623,7 @@ FSP_API NTSTATUS FspMountSet(FSP_MOUNT_DESC *Desc)
            &Desc->MountHandle);
 }

-FSP_API NTSTATUS FspMountRemove(FSP_MOUNT_DESC *Desc)
+NTSTATUS FspMountRemove_Internal(FSP_MOUNT_DESC *Desc)
 {
    InitOnceExecuteOnce(&FspMountInitOnce, FspMountInitialize, 0, 0);

@ -623,3 +637,81 @@ FSP_API NTSTATUS FspMountRemove(FSP_MOUNT_DESC *Desc)
    else
        return FspMountRemove_Directory(Desc->MountHandle);
 }
+
+FSP_API NTSTATUS FspMountSet(FSP_MOUNT_DESC *Desc)
+{
+    NTSTATUS Result;
+    BOOLEAN IsDrive;
+
+    IsDrive =
+        (L'*' == Desc->MountPoint[0] && ':' == Desc->MountPoint[1] && L'\0' == Desc->MountPoint[2]) ||
+        FspPathIsMountmgrDrive(Desc->MountPoint) ||
+        FspPathIsDrive(Desc->MountPoint);
+
+#if defined(FSP_CFG_REJECT_EARLY_IRP)
+    /*
+     * In the original WinFsp design the FSD could accept incoming file system requests
+     * immediately after the in-kernel file system instance was created. Such requests would
+     * be queued in the internal FSD queues and only delivered to the user mode file system
+     * when its dispatcher was started and actively receiving them.
+     *
+     * At the same time the original WinFsp API design was that a user mode file system first
+     * calls FspFileSystemSetMountPoint to create the file system mount point and then calls
+     * FspFileSystemStartDispatcher to start the dispatcher. This design made sense at the time:
+     * creating a mount point involved the creation of a symbolic link of one kind or another,
+     * which could fail for a number of reasons (e.g. drive already exists), so there was no
+     * point to start the dispatcher if the mounting did not succeed. Compatibility with FUSE
+     * and the Unix mounting protocol was another consideration.
+     *
+     * Unfortunately this API design has proved problematic. The problem is that with the
+     * proliferation of ways to mount a file system in WinFsp more and more system components and
+     * third party filters may attempt to access the mount point upon its creation and before the
+     * file system dispatcher is ready. This can result in various consequences.
+     *
+     * In order to properly fix this problem we should probably mandate that a user mode file
+     * system should start its dispatcher first and then create its mountpoint. This way the user
+     * mode file system would be ready to handle any requests from system components or third
+     * party filters during mount point creation. Unfortunately we cannot easily do so because
+     * of backwards compatibility.
+     *
+     * This problem first appeared as an incompatibility with Avast AntiVirus (GitHub issue #221).
+     * In order to avoid backwards incompatible API changes the "Transact0" work around was
+     * devised: when the FSD first creates an in-kernel file system it remains inoperative and any
+     * requests posted to it will fail with STATUS_CANCELLED, until it receives a Transact0
+     * message (an FSP_FSCTL_TRANSACT message with 0 buffers). In order to enable this work around
+     * a user mode file system would specify the RejectIrpPriorToTransact0 flag upon creation.
+     *
+     * Another instance of this problem appeared when support for directory mounting via the Mount
+     * Manager was added: mounting would not complete unless the RejectIrpPriorToTransact0 flag
+     * was set. At this point the RejectIrpPriorToTransact0 was hard coded to 1 in the FSD.
+     *
+     * However if we are creating a drive the Transact0 work around is unnecessary and perhaps
+     * harmful. So in this case send a Transact0 message to the FSD to allow file system requests
+     * to be queued rather than rejected with STATUS_CANCELLED.
+     */
+    if (IsDrive)
+        FspFsctlTransact(Desc->VolumeHandle, 0, 0, 0, 0, FALSE);
+#endif
+
+    Result = FspMountSet_Internal(Desc);
+
+    return Result;
+}
+
+FSP_API NTSTATUS FspMountRemove(FSP_MOUNT_DESC *Desc)
+{
+    NTSTATUS Result;
+    BOOLEAN IsDrive;
+
+    IsDrive =
+        FspPathIsMountmgrDrive(Desc->MountPoint) ||
+        FspPathIsDrive(Desc->MountPoint);
+
+    Result = FspMountRemove_Internal(Desc);
+
+    if (NT_SUCCESS(Result) && IsDrive)
+        /* send an extra notification to remove the "ghost" drive in the shell's navigation pane */
+        FspMountNotifyShellDriveChange();
+
+    return Result;
+}
--- a/src/dll/np.c
+++ b/src/dll/np.c
@ -1,7 +1,7 @@
 /**
 * @file dll/np.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/ntstatus.c
+++ b/src/dll/ntstatus.c
@ -1,7 +1,7 @@
 /**
 * @file dll/ntstatus.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/path.c
+++ b/src/dll/path.c
@ -1,7 +1,7 @@
 /**
 * @file dll/path.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/security.c
+++ b/src/dll/security.c
@ -1,7 +1,7 @@
 /**
 * @file dll/security.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/service.c
+++ b/src/dll/service.c
@ -1,7 +1,7 @@
 /**
 * @file dll/service.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -40,6 +40,8 @@ enum
    GetStatus_WaitHint                  = 0x4000,
 };

+static SRWLOCK FspServiceLoopLock = SRWLOCK_INIT;
+static SRWLOCK FspServiceTableLock = SRWLOCK_INIT;
 static SERVICE_TABLE_ENTRYW *FspServiceTable;
 static HANDLE FspServiceConsoleModeEvent;
 static UINT32 FspServiceConsoleCtrlHandlerDisabled;
@ -220,6 +222,14 @@ FSP_API ULONG FspServiceGetExitCode(FSP_SERVICE *Service)

 FSP_API NTSTATUS FspServiceLoop(FSP_SERVICE *Service)
 {
+    /*
+     * FspServiceLoop can only be called once per process, because of StartServiceCtrlDispatcherW
+     * (which returns ERROR_SERVICE_ALREADY_RUNNING if called more than once). Unfortunately this
+     * limitation was never documented and there may be users of FspServiceLoop out there that call
+     * it more than once per process.
+     */
+    AcquireSRWLockExclusive(&FspServiceLoopLock);
+
    NTSTATUS Result;
    SERVICE_TABLE_ENTRYW ServiceTable[2];

@ -236,7 +246,9 @@ FSP_API NTSTATUS FspServiceLoop(FSP_SERVICE *Service)
    ServiceTable[0].lpServiceProc = FspServiceEntry;
    ServiceTable[1].lpServiceName = 0;
    ServiceTable[1].lpServiceProc = 0;
+    AcquireSRWLockExclusive(&FspServiceTableLock);
    FspServiceTable = ServiceTable;
+    ReleaseSRWLockExclusive(&FspServiceTableLock);

    if (!StartServiceCtrlDispatcherW(ServiceTable))
    {
@ -331,11 +343,42 @@ FSP_API NTSTATUS FspServiceLoop(FSP_SERVICE *Service)
    Result = STATUS_SUCCESS;

 exit:
+    AcquireSRWLockExclusive(&FspServiceTableLock);
    FspServiceTable = 0;
+    ReleaseSRWLockExclusive(&FspServiceTableLock);
+
+    ReleaseSRWLockExclusive(&FspServiceLoopLock);

    return Result;
 }

+static DWORD WINAPI FspServiceStopLoopThread(PVOID Context);
+VOID FspServiceStopLoop(VOID)
+{
+    BOOLEAN HasService;
+    HANDLE Thread;
+
+    AcquireSRWLockShared(&FspServiceTableLock);
+    HasService = 0 != FspServiceFromTable();
+    ReleaseSRWLockShared(&FspServiceTableLock);
+
+    if (HasService)
+    {
+        Thread = CreateThread(0, 0, FspServiceStopLoopThread, 0, 0, 0);
+        if (0 != Thread)
+            CloseHandle(Thread);
+    }
+}
+static DWORD WINAPI FspServiceStopLoopThread(PVOID Context)
+{
+    AcquireSRWLockShared(&FspServiceTableLock);
+    FSP_SERVICE *Service = FspServiceFromTable();
+    if (0 != Service)
+        FspServiceStop(Service);
+    ReleaseSRWLockShared(&FspServiceTableLock);
+    return 0;
+}
+
 FSP_API VOID FspServiceStop(FSP_SERVICE *Service)
 {
    SERVICE_STATUS ServiceStatus;
@ -393,6 +436,7 @@ static VOID WINAPI FspServiceEntry(DWORD Argc, PWSTR *Argv)
    FSP_SERVICE *Service;

    Service = FspServiceFromTable();
+        /* we are subordinate to FspServiceLoop; no need to protect this access with FspServiceTableLock */
    if (0 == Service)
    {
        FspServiceLog(EVENTLOG_ERROR_TYPE,
@ -501,6 +545,7 @@ static DWORD WINAPI FspServiceConsoleModeThread(PVOID Context)
        ;

    Service = FspServiceFromTable();
+        /* we are subordinate to FspServiceLoop; no need to protect this access with FspServiceTableLock */
    if (0 == Service)
        FspServiceLog(EVENTLOG_ERROR_TYPE,
            L"" __FUNCTION__ ": internal error: FspServiceFromTable = 0");
--- a/src/dll/sxs.c
+++ b/src/dll/sxs.c
@ -1,7 +1,7 @@
 /**
 * @file dll/sxs.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dll/util.c
+++ b/src/dll/util.c
@ -1,7 +1,7 @@
 /**
 * @file dll/util.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -418,3 +418,74 @@ NTSTATUS FspGetModuleFileName(

    return STATUS_SUCCESS;
 }
+
+VOID FspAdaptiveLockAcquire(
+    FSP_ADAPTIVE_LOCK *Lock,
+    PWSTR FileName,
+    UINT64 Offset,
+    DWORD Timeout)
+{
+    AcquireSRWLockExclusive(&Lock->Lock);
+
+    if (0 != FileName)
+    {
+        HANDLE Handle;
+        DWORD BytesTransferred;
+        OVERLAPPED Overlapped;
+        BOOL Success;
+
+        Handle = CreateFileW(
+            FileName,
+            FILE_READ_DATA,
+            FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+            0,
+            OPEN_EXISTING,
+            FILE_FLAG_OVERLAPPED,
+            0);
+        if (INVALID_HANDLE_VALUE != Handle)
+        {
+            memset(&Overlapped, 0, sizeof Overlapped);
+            Overlapped.Offset = ((PLARGE_INTEGER)&Offset)->LowPart;
+            Overlapped.OffsetHigh = ((PLARGE_INTEGER)&Offset)->HighPart;
+
+            Success = LockFileEx(
+                Handle,
+                LOCKFILE_EXCLUSIVE_LOCK, 0,
+                1, 0,
+                &Overlapped);
+            if (Success || ERROR_IO_PENDING == GetLastError())
+            {
+                Success = FALSE;
+                if (WAIT_OBJECT_0 == WaitForSingleObject(Handle, Timeout))
+                    Success = GetOverlappedResult(Handle, &Overlapped, &BytesTransferred, TRUE);
+            }
+
+            if (Success)
+            {
+                Lock->Handle = Handle;
+                Lock->Offset = Offset;
+            }
+            else
+                CloseHandle(Handle);
+        }
+    }
+}
+
+VOID FspAdaptiveLockRelease(
+    FSP_ADAPTIVE_LOCK *Lock)
+{
+    if (INVALID_HANDLE_VALUE != Lock->Handle)
+    {
+        HANDLE Handle = Lock->Handle;
+        LARGE_INTEGER LargeOffset = *(PLARGE_INTEGER)&Lock->Offset;
+
+        UnlockFile(Handle, LargeOffset.LowPart, LargeOffset.HighPart, 1, 0);
+
+        CloseHandle(Handle);
+
+        Lock->Handle = INVALID_HANDLE_VALUE;
+        Lock->Offset = 0;
+    }
+
+    ReleaseSRWLockExclusive(&Lock->Lock);
+}
--- a/src/dll/wksid.c
+++ b/src/dll/wksid.c
@ -1,7 +1,7 @@
 /**
 * @file dll/wksid.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dotnet/FileSystemBase+Const.cs
+++ b/src/dotnet/FileSystemBase+Const.cs
@ -1,7 +1,7 @@
 /*
 * dotnet/FileSystemBase+Const.cs
 *
- * Copyright 2015-2022 Bill Zissimopoulos
+ * Copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/dotnet/FileSystemBase.cs
+++ b/src/dotnet/FileSystemBase.cs
@ -1,7 +1,7 @@
 /*
 * dotnet/FileSystemBase.cs
 *
- * Copyright 2015-2022 Bill Zissimopoulos
+ * Copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -1188,6 +1188,39 @@ namespace Fsp
        {
            return STATUS_INVALID_DEVICE_REQUEST;
        }
+        /// <summary>
+        /// Inform the file system that its dispatcher has been stopped.
+        /// </summary>
+        /// <remarks>
+        /// <para>
+        /// Prior to WinFsp v2.0 the FSD would never unmount a file system volume unless
+        /// the user mode file system requested the unmount. Since WinFsp v2.0 it is possible
+        /// for the FSD to unmount a file system volume without an explicit user mode file system
+        /// request. For example, this happens when the FSD is being uninstalled.
+        /// </para><para>
+        /// A user mode file system can use this operation to determine when its dispatcher
+        /// has been stopped. The Normally parameter can be used to determine why the dispatcher
+        /// was stopped: it is TRUE when the file system is being stopped normally (i.e. via the
+        /// native FspFileSystemStopDispatcher) and FALSE otherwise.
+        /// </para><para>
+        /// A file system that uses the Service class infrastructure may use the
+        /// StopServiceIfNecessary method to correctly handle all cases. The base implementation
+        /// of this method calls the StopServiceIfNecessary method.
+        /// </para><para>
+        /// This operation is the last one that a file system will receive.
+        /// </para>
+        /// </remarks>
+        /// <param name="Normally">
+        /// TRUE if the file system is being stopped via the native FspFileSystemStopDispatcher.
+        /// FALSE if the file system is being stopped because of another reason such
+        /// as driver unload/uninstall.
+        /// </param>
+        /// <seealso cref="StopServiceIfNecessary"/>
+        public virtual void DispatcherStopped(
+            Boolean Normally)
+        {
+            StopServiceIfNecessary(Normally);
+        }

        /* helpers */
        /// <summary>
@ -1483,6 +1516,10 @@ namespace Fsp
        {
            return FullEaInformation.PackedSize(EaName, EaValue, NeedEa);
        }
+        public void StopServiceIfNecessary(Boolean Normally)
+        {
+            Api.FspFileSystemStopServiceIfNecessary(IntPtr.Zero, Normally);
+        }
    }

 }
--- a/src/dotnet/FileSystemHost.cs
+++ b/src/dotnet/FileSystemHost.cs
@ -1,7 +1,7 @@
 /*
 * dotnet/FileSystemHost.cs
 *
- * Copyright 2015-2022 Bill Zissimopoulos
+ * Copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -1426,6 +1426,21 @@ namespace Fsp
            }
        }

+        private static void DispatcherStopped(
+            IntPtr FileSystemPtr,
+            Boolean Normally)
+        {
+            FileSystemBase FileSystem = (FileSystemBase)Api.GetUserContext(FileSystemPtr);
+            try
+            {
+                FileSystem.DispatcherStopped(Normally);
+            }
+            catch (Exception ex)
+            {
+                ExceptionHandler(FileSystem, ex);
+            }
+        }
+
        static FileSystemHost()
        {
            _FileSystemInterface.GetVolumeInfo = GetVolumeInfo;
@ -1456,6 +1471,7 @@ namespace Fsp
            _FileSystemInterface.SetDelete = SetDelete;
            _FileSystemInterface.GetEa = GetEa;
            _FileSystemInterface.SetEa = SetEa;
+            _FileSystemInterface.DispatcherStopped = DispatcherStopped;

            _FileSystemInterfacePtr = Marshal.AllocHGlobal(FileSystemInterface.Size);
            /* Marshal.AllocHGlobal does not zero memory; we must do it ourselves! */
--- a/src/dotnet/Interop.cs
+++ b/src/dotnet/Interop.cs
@ -1,7 +1,7 @@
 /*
 * dotnet/Interop.cs
 *
- * Copyright 2015-2022 Bill Zissimopoulos
+ * Copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -745,6 +745,10 @@ namespace Fsp.Interop
                out FileInfo FileInfo);
            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            internal delegate Int32 Obsolete0();
+            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+            internal delegate void DispatcherStopped(
+                IntPtr FileSystem,
+                [MarshalAs(UnmanagedType.U1)] Boolean Normally);
        }

        internal static int Size = IntPtr.Size * 64;
@ -781,6 +785,7 @@ namespace Fsp.Interop
        internal Proto.GetEa GetEa;
        internal Proto.SetEa SetEa;
        internal Proto.Obsolete0 Obsolete0;
+        internal Proto.DispatcherStopped DispatcherStopped;
        /* NTSTATUS (*Reserved[33])(); */
    }

@ -907,6 +912,10 @@ namespace Fsp.Interop
                UInt32 Length,
                out UInt32 PBytesTransferred);
            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+            internal delegate void FspFileSystemStopServiceIfNecessary(
+                IntPtr FileSystem,
+                [MarshalAs(UnmanagedType.U1)] Boolean Normally);
+            [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
            [return: MarshalAs(UnmanagedType.U1)]
            internal delegate Boolean FspFileSystemAcquireDirectoryBuffer(
                ref IntPtr PDirBuffer,
@ -1048,6 +1057,7 @@ namespace Fsp.Interop
        internal static Proto.FspFileSystemAddStreamInfo _FspFileSystemAddStreamInfo;
        internal static Proto.FspFileSystemAddEa _FspFileSystemAddEa;
        internal static Proto.FspFileSystemAddNotifyInfo _FspFileSystemAddNotifyInfo;
+        internal static Proto.FspFileSystemStopServiceIfNecessary FspFileSystemStopServiceIfNecessary;
        internal static Proto.FspFileSystemAcquireDirectoryBuffer FspFileSystemAcquireDirectoryBuffer;
        internal static Proto.FspFileSystemFillDirectoryBuffer FspFileSystemFillDirectoryBuffer;
        internal static Proto.FspFileSystemReleaseDirectoryBuffer FspFileSystemReleaseDirectoryBuffer;
@ -1506,6 +1516,7 @@ namespace Fsp.Interop
            _FspFileSystemAddStreamInfo = GetEntryPoint<Proto.FspFileSystemAddStreamInfo>(Module);
            _FspFileSystemAddEa = GetEntryPoint<Proto.FspFileSystemAddEa>(Module);
            _FspFileSystemAddNotifyInfo = GetEntryPoint<Proto.FspFileSystemAddNotifyInfo>(Module);
+            FspFileSystemStopServiceIfNecessary = GetEntryPoint<Proto.FspFileSystemStopServiceIfNecessary>(Module);
            FspFileSystemAcquireDirectoryBuffer = GetEntryPoint<Proto.FspFileSystemAcquireDirectoryBuffer>(Module);
            FspFileSystemFillDirectoryBuffer = GetEntryPoint<Proto.FspFileSystemFillDirectoryBuffer>(Module);
            FspFileSystemReleaseDirectoryBuffer = GetEntryPoint<Proto.FspFileSystemReleaseDirectoryBuffer>(Module);
--- a/src/dotnet/Service.cs
+++ b/src/dotnet/Service.cs
@ -1,7 +1,7 @@
 /*
 * dotnet/Service.cs
 *
- * Copyright 2015-2022 Bill Zissimopoulos
+ * Copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/fsptool/fsptool.c
+++ b/src/fsptool/fsptool.c
@ -1,7 +1,7 @@
 /**
 * @file fsptool/fsptool.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/launcher/launchctl.c
+++ b/src/launcher/launchctl.c
@ -1,7 +1,7 @@
 /**
 * @file launcher/launchctl.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/launcher/launcher.c
+++ b/src/launcher/launcher.c
@ -1,7 +1,7 @@
 /**
 * @file launcher/launcher.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/launcher/ptrans.c
+++ b/src/launcher/ptrans.c
@ -1,7 +1,7 @@
 /**
 * @file launcher/ptrans.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/shared/ku/config.h
+++ b/src/shared/ku/config.h
@ -4,7 +4,7 @@
 * Shared kernel/user configuration. This file is to be included by the
 * FSD and DLL components ONLY!
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/shared/ku/library.h
+++ b/src/shared/ku/library.h
@ -1,7 +1,7 @@
 /**
 * @file shared/ku/library.h
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/shared/ku/mountmgr.c
+++ b/src/shared/ku/mountmgr.c
@ -1,7 +1,7 @@
 /**
 * @file shared/ku/mountmgr.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/shared/ku/posix.c
+++ b/src/shared/ku/posix.c
@ -14,7 +14,7 @@
 * [SNAME]
 *     https://www.cygwin.com/cygwin-ug-net/using-specialnames.html
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/shared/ku/uuid5.c
+++ b/src/shared/ku/uuid5.c
@ -1,7 +1,7 @@
 /**
 * @file shared/ku/uuid5.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/shared/um/minimal.h
+++ b/src/shared/um/minimal.h
@ -1,7 +1,7 @@
 /**
 * @file shared/um/minimal.h
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/sys/callbacks.c
+++ b/src/sys/callbacks.c
@ -2,7 +2,7 @@
 * @file sys/callbacks.c
 * Fast I/O and resource acquisition callbacks.
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -154,8 +154,16 @@ NTSTATUS FspReleaseForModWrite(

    FSP_FILE_NODE *FileNode = FileObject->FsContext;

+    /*
+     * In some rare cases and under load the mapped page writer's TopLevelIrp
+     * may be trashed by some outside component (observed on Windows 10 1909).
+     */
+    PIRP TopLevelIrp = IoGetTopLevelIrp();
+    IoSetTopLevelIrp((PIRP)FSRTL_MOD_WRITE_TOP_LEVEL_IRP);
+
    FspFileNodeRelease(FileNode, Full);
-    ASSERT((PIRP)FSRTL_MOD_WRITE_TOP_LEVEL_IRP == IoGetTopLevelIrp());
+
+    IoSetTopLevelIrp(TopLevelIrp);

    FSP_LEAVE("FileObject=%p", FileObject);
 }
@ -316,7 +324,9 @@ VOID FspPropagateTopFlags(PIRP Irp, PIRP TopLevelIrp)
            FspFileNodeAcquireMain :
            FspFileNodeAcquireFull);
    }
-    else if ((PIRP)MM_SYSTEM_RANGE_START <= TopLevelIrp && IO_TYPE_IRP == TopLevelIrp->Type)
+    else if ((PIRP)MM_SYSTEM_RANGE_START <= TopLevelIrp &&
+        IO_TYPE_IRP == TopLevelIrp->Type &&
+        TopLevelIrp->CurrentLocation <= TopLevelIrp->StackCount)
    {
        PFILE_OBJECT FileObject = IoGetCurrentIrpStackLocation(Irp)->FileObject;
        PFILE_OBJECT TopLevelFileObject = IoGetCurrentIrpStackLocation(TopLevelIrp)->FileObject;
--- a/src/sys/cleanup.c
+++ b/src/sys/cleanup.c
@ -1,7 +1,7 @@
 /**
 * @file sys/cleanup.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/sys/close.c
+++ b/src/sys/close.c
@ -1,7 +1,7 @@
 /**
 * @file sys/close.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/sys/create.c
+++ b/src/sys/create.c
@ -1,7 +1,7 @@
 /**
 * @file sys/create.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -298,6 +298,8 @@ static NTSTATUS FspFsvolCreateNoLock(
    ULONG CreateOptions = IrpSp->Parameters.Create.Options;
    USHORT FileAttributes = IrpSp->Parameters.Create.FileAttributes;
    PSECURITY_DESCRIPTOR SecurityDescriptor = AccessState->SecurityDescriptor;
+    BOOLEAN SecurityDescriptorRelative = 0 != SecurityDescriptor &&
+        BooleanFlagOn(((SECURITY_DESCRIPTOR *)SecurityDescriptor)->Control, SE_SELF_RELATIVE);
    ULONG SecurityDescriptorSize = 0;
    UINT64 AllocationSize = Irp->Overlay.AllocationSize.QuadPart;
    UINT64 AllocationUnit;
@ -406,7 +408,10 @@ static NTSTATUS FspFsvolCreateNoLock(
        if (!RtlValidSecurityDescriptor(SecurityDescriptor))
            return STATUS_INVALID_PARAMETER;
 #endif
+        if (SecurityDescriptorRelative)
            SecurityDescriptorSize = RtlLengthSecurityDescriptor(SecurityDescriptor);
+        else
+            RtlAbsoluteToSelfRelativeSD(SecurityDescriptor, 0, &SecurityDescriptorSize);
    }

    /* align allocation size */
@ -702,8 +707,18 @@ static NTSTATUS FspFsvolCreateNoLock(

    /* copy the security descriptor (if any) into the request */
    if (0 != SecurityDescriptorSize)
-        RtlCopyMemory(Request->Buffer + Request->Req.Create.SecurityDescriptor.Offset,
-            SecurityDescriptor, SecurityDescriptorSize);
+    {
+        if (SecurityDescriptorRelative)
+            RtlCopyMemory(
+                Request->Buffer + Request->Req.Create.SecurityDescriptor.Offset,
+                SecurityDescriptor,
+                SecurityDescriptorSize);
+        else
+            RtlAbsoluteToSelfRelativeSD(
+                SecurityDescriptor,
+                (PSECURITY_DESCRIPTOR)(Request->Buffer + Request->Req.Create.SecurityDescriptor.Offset),
+                &SecurityDescriptorSize);
+    }

    /* copy the extra buffer (if any) into the request */
    if (0 != ExtraBuffer)
--- a/src/sys/debug.c
+++ b/src/sys/debug.c
@ -1,7 +1,7 @@
 /**
 * @file sys/debug.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/sys/devctl.c
+++ b/src/sys/devctl.c
@ -1,7 +1,7 @@
 /**
 * @file sys/devctl.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/sys/device.c
+++ b/src/sys/device.c
@ -1,7 +1,7 @@
 /**
 * @file sys/device.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/sys/devtimer.c
+++ b/src/sys/devtimer.c
@ -1,7 +1,7 @@
 /**
 * @file sys/devtimer.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/sys/dirctl.c
+++ b/src/sys/dirctl.c
@ -1,7 +1,7 @@
 /**
 * @file sys/dirctl.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -205,6 +205,7 @@ static NTSTATUS FspFsvolQueryDirectoryCopy(
                    ASSERT(sizeof(UINT64) == DirectoryMarker->Length);
                    DirectoryMarkerFound = DirectoryNextOffset == *(PUINT64)DirectoryMarker->Buffer;
                }
+                continue;
            }

            /* CopyLength is the same as FileName.Length except on STATUS_BUFFER_OVERFLOW */
--- a/src/sys/driver.c
+++ b/src/sys/driver.c
@ -1,7 +1,7 @@
 /**
 * @file sys/driver.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/sys/driver.h
+++ b/src/sys/driver.h
@ -1,7 +1,7 @@
 /**
 * @file sys/driver.h
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/sys/driver.inf.in
+++ b/src/sys/driver.inf.in
@ -8,7 +8,7 @@ Provider = !Provider!
 [DestinationDirs]
 DefaultDestDir = 12

-[DefaultInstall]
+[DefaultInstall.!ArchDecoration!]
 CopyFiles = Driver.CopyFiles

 [Driver.CopyFiles]
--- a/src/sys/ea.c
+++ b/src/sys/ea.c
@ -1,7 +1,7 @@
 /**
 * @file sys/ea.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/sys/file.c
+++ b/src/sys/file.c
@ -1,7 +1,7 @@
 /**
 * @file sys/file.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/sys/fileinfo.c
+++ b/src/sys/fileinfo.c
@ -1,7 +1,7 @@
 /**
 * @file sys/fileinfo.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/sys/flush.c
+++ b/src/sys/flush.c
@ -1,7 +1,7 @@
 /**
 * @file sys/flush.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/sys/fsctl.c
+++ b/src/sys/fsctl.c
@ -1,7 +1,7 @@
 /**
 * @file sys/fsctl.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
@ -731,6 +731,7 @@ static NTSTATUS FspFsvolFileSystemControl(
            Result = FspVolumeWork(FsvolDeviceObject, Irp, IrpSp);
            break;
        case FSP_FSCTL_QUERY_WINFSP:
+        case FSCTL_IS_VOLUME_MOUNTED:
            Irp->IoStatus.Information = 0;
            Result = STATUS_SUCCESS;
            break;
--- a/src/sys/fsext.c
+++ b/src/sys/fsext.c
@ -1,7 +1,7 @@
 /**
 * @file sys/fsext.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/src/sys/iop.c
+++ b/src/sys/iop.c
@ -1,7 +1,7 @@
 /**
 * @file sys/iop.c
 *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
 */
 /*
 * This file is part of WinFsp.
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Bill Zissimopoulos	4fdec4d37f	sys: FspFsvolCreate, FspFsvolSetSecurity: absolute security descriptors Some third party filters send us security descriptors in absolute rather than self-relative format. Handle this case by converting them to self- relative format ourselves.	2024-10-10 12:34:04 +01:00
Bill Zissimopoulos	2da97d48f5	tools: make-release: add new signatures	2024-09-11 14:48:55 +01:00
Bill Zissimopoulos	7c5dc48414	build: version: 2024 Beta2	2024-09-11 14:46:38 +01:00
Bill Zissimopoulos	93c057571a	changelog: 2024 Beta2	2024-09-11 13:23:41 +01:00
Bill Zissimopoulos	da16d0e6ea	Merge pull request #567 from siketyan/fix/string-h-import fix: Add missing string.h import in winfsp_fuse.h	2024-09-10 09:25:12 +01:00
Natsuki Ikeguchi	dbaee25ed2	fix: Add missing string.h import in winfsp_fuse.h Signed-off-by: Naoki Ikeguchi <me@s6n.jp>	2024-09-10 01:02:29 +09:00
Bill Zissimopoulos	2bf9a6c16e	sys: mup: correctly handle relative file object chain (#561 )	2024-06-20 12:44:35 +01:00
Bill Zissimopoulos	b058925692	tst: launcher-secrets: secret: replace gets with fgets	2024-06-03 11:49:38 +01:00
Bill Zissimopoulos	507c794470	doc: known file systems: remove nodejs library with no support for WinFsp	2024-02-20 13:18:30 +00:00
Bill Zissimopoulos	9a6571809e	changelog: 2024 Beta1	2024-02-20 12:16:46 +00:00
Bill Zissimopoulos	e452f75c9c	doc: SxsDir registry setting	2024-01-20 10:55:26 +00:00
Bill Zissimopoulos	7551193ad7	update source copyright to 2024	2024-01-08 12:38:44 +00:00
Bill Zissimopoulos	65bf8c5319	dll: use adaptive locks when starting/stopping FSD	2023-12-12 12:36:41 +00:00
Bill Zissimopoulos	be5faf34bc	build: version: 2024 Beta1	2023-12-11 16:26:56 +00:00
Bill Zissimopoulos	0e1c8ae1dc	build: version: correct version to 2023.1 Beta1	2023-08-30 11:33:54 +01:00
Bill Zissimopoulos	9aa67bdad4	build: version: bump to 2.1 (2023.1)	2023-08-30 11:30:36 +01:00
Bill Zissimopoulos	de321620fd	dll: FspFsctlServiceVersion as public API	2023-08-30 11:17:09 +01:00
Bill Zissimopoulos	a482183149	sys: FspPropagateTopFlags: check TopLevelIrp not completed Add a check to verify that the TopLevelIrp has not been completed. This became necessary because on recent Windows kernels, IRP's can have "IRP extensions", which are freed when an IRP is completed. This can trigger a recursive CLOSE with a top-level IRP that has been completed, which can bugcheck the system. Case in point: the new (Win11) NtCopyFileChunk creates IRP's with COPY_INFORMATION attached. Upon completion of such an IRP the SourceFileObject is freed, which results in a recursive IRP_MJ_CLOSE with a completed top-level IRP, which would lead to a BSOD.	2023-08-29 13:15:37 +01:00
Bill Zissimopoulos	6fb72555d3	github: workflows: avm: update latest asset	2023-03-16 11:58:45 +00:00
Bill Zissimopoulos	9accf72d39	tools: make-release.ps1: match release tag exactly	2023-03-16 11:30:03 +00:00
Bill Zissimopoulos	5c03dd11ee	changelog: version: 2023	2023-03-16 10:43:13 +00:00
Bill Zissimopoulos	1f37e5a81a	build: version: 2023	2023-03-16 10:43:00 +00:00
Bill Zissimopoulos	db319bc3c1	sys,dll: mount improvements - sys: FspFsvolFileSystemControl: FSCTL_IS_VOLUME_MOUNTED - dll: mount: Transact0, FspMountNotifyShellDriveChange	2023-02-24 12:02:03 +00:00
Bill Zissimopoulos	c04e3d9534	doc: update FAQ	2023-02-23 13:50:11 +00:00
Bill Zissimopoulos	1912814d79	changelog: v2.0RC1	2023-02-23 13:29:10 +00:00
Bill Zissimopoulos	97c075e744	sys: FspFsvolQueryDirectoryCopy: add missing continue A single line change in FspFsvolQueryDirectoryCopy fixes GitHub issue #475. This commit also includes a test for detecting duplicate directory entries. Credit for the investigation and reproduction of this issue goes to GitHub user @hach-que.	2023-02-16 17:07:59 +00:00
Bill Zissimopoulos	874a223bcc	build: version: 2023 RC1	2023-02-07 20:55:49 +00:00
Bill Zissimopoulos	901a98e118	tools: make-release.ps1: automate submissions to hardware dashboard	2023-02-07 20:54:05 +00:00
Bill Zissimopoulos	0ab4300738	github: workflows: avm: update files	2023-02-02 12:20:34 +00:00
Bill Zissimopoulos	52e6aa97b5	build: sys: pacify hardware center validation Infverif /k no longer likes "undecorated" [DefaultInstall] sections and instead it wants them "architecture decorated". For example, [DefaultInstall.ntarm64]. So play along to have our driver signed. For more information see: https://learn.microsoft.com/en-us/windows-hardware/drivers/develop/creating-a-primitive-driver	2023-02-01 22:50:35 +00:00
Bill Zissimopoulos	a7d82d5f8d	changelog: v2.0B2 update	2023-02-01 17:55:14 +00:00
Bill Zissimopoulos	3aadaee511	dll: FspFileSystemStopServiceIfNecessary	2023-02-01 17:42:11 +00:00
Bill Zissimopoulos	da3a8aa229	Merge pull request #478 from zeho11/patch-1 tst: passthrough-fuse: fix UNC path mount	2023-02-01 11:01:13 +00:00
zeho11	1f0fd4c280	Update	2023-01-31 19:13:10 +08:00
Bill Zissimopoulos	6da92f0b54	tools: make-release: add nuget support	2023-01-09 23:04:03 +00:00
Bill Zissimopoulos	4f5f1dd350	build: version: bump to v2.0B2	2023-01-09 22:27:44 +00:00
Bill Zissimopoulos	ba5d52e9a5	dll: FspFileSystemStartDispatcher: Send a Transact0 to inform the FSD that the dispatcher is almost ready.	2023-01-09 15:45:11 +00:00
Bill Zissimopoulos	d626fb9563	sys: FspReleaseForModWrite In some rare cases and under load the mapped page writer's TopLevelIrp may be trashed by some outside component (observed on Windows 10 1909). For this reason remove an assertion that could trigger in debug builds.	2023-01-09 15:30:42 +00:00
zeho11	69cc1820e1	tst: passthrough-fuse3: fix UNC path mount	2022-12-19 09:22:43 +08:00
zeho11	c06141c8c8	tst: passthrough-fuse: fix UNC path mount	2022-12-19 09:22:16 +08:00
Bill Zissimopoulos	760c2acded	Merge pull request #476 from zeho11/patch-1 dll: fuse: correct error handling when name exceeds limit	2022-12-16 22:29:37 +00:00
zeho11	671efe625a	Update	2022-12-15 20:49:01 +09:00
zeho11	a59b32b1ee	tst: winfsp-tests: add multibyte checks to querydir_namelen_test	2022-12-15 19:17:22 +09:00
zeho11	22d81846df	tst: passthrough-fuse3: multibyte support	2022-12-15 19:16:19 +09:00
zeho11	8c9b8362b4	tst: passthrough-fuse: multibyte support	2022-12-15 19:14:44 +09:00
Bill Zissimopoulos	e92eb023fe	Merge branch 'release/1.12'	2022-12-12 11:53:20 +00:00
zeho11	e550e261f0	dll: fuse: correct error handling when name exceeds limit Related to b62e1e920b292c4928395db89e96fada29dd7c38	2022-12-12 12:08:48 +09:00
Bill Zissimopoulos	46054c03fe	Merge pull request #474 from zeho11/patch-1 dll: fuse: change name limit to 255 chars	2022-12-08 16:02:38 +00:00
zeho11	db07b24342	Update	2022-12-08 18:02:19 +09:00
zeho11	cb81e81985	Update fuse_intf.c	2022-12-07 15:17:59 +09:00
zeho11	b62e1e920b	dll: fuse: change name limit to 255 chars Fixes #191 Fixes #455	2022-12-07 14:39:36 +09:00
Bill Zissimopoulos	c61679a35d	tools: build.bat: make cab file from unsigned drivers	2022-12-05 13:06:18 +00:00
Bill Zissimopoulos	619e41a18e	changelog: update for v1.12.22335	2022-12-01 11:09:58 +00:00
Bill Zissimopoulos	80fa156e7b	tools: build.bat: remove SHA1 signatures	2022-12-01 10:59:48 +00:00
Bill Zissimopoulos	01d9fa1719	Merge branch 'pvt-dotnetcore'	2022-11-30 10:06:42 +00:00
Bill Zissimopoulos	6846508631	tools: build.bat,make-release.ps1: accommodate winfsp.net.nupkg	2022-11-29 21:13:13 +00:00
Bill Zissimopoulos	0488451c3d	build: fix dotnet output paths	2022-11-29 15:49:09 +00:00
Bill Zissimopoulos	7c3292af81	tools: build.bat: dotnet build	2022-11-29 12:53:33 +00:00
Bill Zissimopoulos	3d2ba637e5	build: minimize changes in .csproj files	2022-11-28 16:52:21 +00:00
Bill Zissimopoulos	db72b57ca4	build: dotnet: remove Directory.Build.props	2022-11-28 14:04:51 +00:00
Bill Zissimopoulos	020157a9ae	Merge branch 'dotnetcore' of https://github.com/Noire001/winfsp into Noire001-dotnetcore	2022-11-28 12:13:50 +00:00
Konstantinos Karakostas	d99cb2d7d1	build: dotnet: set PlatformTarget to AnyCPU	2022-11-23 22:47:50 +02:00
Bill Zissimopoulos	298261c4af	tools: make-release.ps1: add build hashes	2022-11-23 16:21:08 +00:00
Bill Zissimopoulos	3c674a556d	tools: make-release.ps1: update download link	2022-11-23 15:18:25 +00:00
Konstantinos Karakostas	92084a56c6	build: dotnet: add missing NuGet properties	2022-11-20 20:05:10 +02:00
Konstantinos Karakostas	53f97c9841	build: dotnet: revert optional changes/deletions	2022-11-20 19:39:06 +02:00
Konstantinos Karakostas	2770eca1bf	tools: use dotnet build in VS2015 CI	2022-11-20 15:10:50 +02:00
Konstantinos Karakostas	2945971ba9	build: memfs-dotnet: migrate to .NET SDK	2022-11-19 21:01:44 +02:00
Noire001	0a39ef60bd	Update Contributors.asciidoc	2022-11-19 21:01:44 +02:00
Konstantinos Karakostas	e1faf1351e	build: dotnet: generate NuGet package on build	2022-11-19 21:01:44 +02:00
Konstantinos Karakostas	7333451eac	build: installer: update assembly location	2022-11-19 21:01:24 +02:00
Konstantinos Karakostas	c178db127c	build: dotnet: migrate to .NET SDK	2022-11-19 20:57:50 +02:00
Bill Zissimopoulos	e1b2e77df0	build: version: 2022.2	2022-10-18 12:19:36 +01:00