WinFsp 2021 Beta2 released

[Bill Zissimopoulos]

WinFsp 2021 Beta2 has been released.

 

https://github.com/billziss-gh/winfsp/releases/tag/v1.9B2

 

## CHANGES SINCE WINFSP 2020.2

 

* [NEW] WinFsp now supports file change notifications and cache invalidations. This functionality is offered via the following new API's:

    * Native API: `FspFileSystemNotify`

    * FUSE API: `fuse_notify`

    * .NET API: `FileSystemHost.Notify`

 

* [NEW] A native file system (notifyfs) and a .NET file system (notifyfs-dotnet) have been added to showcase the new file change notification API.

 

* [NEW] A new WinFsp-FUSE option `FileSecurity` has been added that allows the complete specification of file security descriptors using SDDL. (See GitHub issue https://github.com/rclone/rclone/issues/4717#issuecomment-767723287.)

 

* [FIX] The FSD now correctly handles a rare situation where receiving too many CLOSE calls from the OS (e.g. when caching thousands of files) could result in a bogus "insufficient resources" error. (See commit 0af0bfbe7c45e353d693a2a45965d99fa81f2163.)

 

* [FIX] WinFsp-FUSE correctly maps SID's from trusted domains to POSIX UID's in a multi-domain environment (using the "trustPosixOffset" attribute). Previously WinFsp-FUSE only handled SID's from the primary domain correctly.

 

* [FIX] WinFsp-FUSE options such as `volname`, `VolumePrefix`, `FileSystemName`, `ExactFileSystemName` are now truncated when too long. (See GitHub issue #311.)

 

* [FIX] The WinFsp driver is now started in a thread-safe manner if it is not already running. (See GitHub issue billziss-gh/cgofuse#51.)

 

* [FIX] Credentials entered in the Credentials dialog (when mapping network drives) are no longer saved by default. (See GitHub PR #342. Thanks @gaotxg.)