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.

.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

Changelog.md

@@ -1,6 +1,88 @@
 # 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.

Contributors.asciidoc

@@ -67,6 +67,7 @@ CONTRIBUTOR LIST
 |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

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 Beta2</MyProductVersion>
+        <MyProductVersion>2024 Beta2</MyProductVersion>
         <MyProductStage>Beta</MyProductStage>
 
         <MyCrossCert>DigiCertGlobalG3CodeSigningECCSHA3842021CA1.cer</MyCrossCert>

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.

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.

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

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.

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>

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

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

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>

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

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>

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

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>

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.

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>

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

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.

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.

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.

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

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.

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.

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.

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.

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(

inc/winfsp/launch.h

@@ -5,7 +5,7 @@
  * In order to use the WinFsp Launch API a program must include <winfsp/launch.h>
  * 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.

inc/winfsp/winfsp.h

@@ -5,7 +5,7 @@
  * In order to use the WinFsp API the user mode file system must include <winfsp/winfsp.h>
  * 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.

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.

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.

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.

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.

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.

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.

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;
 }

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.
@@ -106,6 +106,21 @@ 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);

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;
+}

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.

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.

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.

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.

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.

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.

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);
+}

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.
@@ -324,7 +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;

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.

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.

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
-        SecurityDescriptorSize = RtlLengthSecurityDescriptor(SecurityDescriptor);
+        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)

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.

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.

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.

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.

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 */

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.

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.

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.

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.

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.

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.

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;

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.

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.

src/sys/ioq.c

@@ -1,7 +1,7 @@
 /**
  * @file sys/ioq.c
  *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
  */
 /*
  * This file is part of WinFsp.

src/sys/lockctl.c

@@ -1,7 +1,7 @@
 /**
  * @file sys/lockctl.c
  *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
  */
 /*
  * This file is part of WinFsp.

src/sys/meta.c

@@ -1,7 +1,7 @@
 /**
  * @file sys/meta.c
  *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
  */
 /*
  * This file is part of WinFsp.

src/sys/mountdev.c

@@ -1,7 +1,7 @@
 /**
  * @file sys/mountdev.c
  *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
  */
 /*
  * This file is part of WinFsp.

src/sys/mup.c

@@ -1,7 +1,7 @@
 /**
  * @file sys/mup.c
  *
- * @copyright 2015-2022 Bill Zissimopoulos
+ * @copyright 2015-2024 Bill Zissimopoulos
  */
 /*
  * This file is part of WinFsp.
@@ -250,7 +250,7 @@ NTSTATUS FspMupHandleIrp(
          * Every other CREATE request must be forwarded to the appropriate fsvol device.
          */
 
-        if (0 != FileObject->RelatedFileObject)
+        while (0 != FileObject->RelatedFileObject)
             FileObject = FileObject->RelatedFileObject;
 
         FspFsmupDeviceLockPrefixTable(FsmupDeviceObject);