This PR adds a check that prevents performing link lookups on drive roots as this is reported to fail on some Windows versions.
The PR also makes a link lookup failure a warning instead of failing the restore process.
This updates VSS to default use Vanara in favor of AlphaVSS which is no longer maintained.
The build for Vanara requires targeting `net8.0-windows7.0`, which will cause significant build overhead and complexity for cross platform builds.
To counter this, the setup is to have a single project, `Duplicati.Library.WindowsModules`, that is targeting `net8.0-windows7.0`.
The output from this project is then hoisted into the TrayIcon project for Windows builds so the files are available when debugging on Windows.
A top-level dummy executable project is added to ensure the project always builds.
The built modules are then loaded with reflection when requested.
With the use of Vanara there is now also support for using BackupRead to read files without making a VSS snapshot.
With BackupRead, it is possible to read locked files, but it still requires the SeBackupPrivilege as VSS does as well.
Unfortunately, the `vssapi.dll` file is not shipped for Arm64 on Windows, so even with Vanara this will not work, and only WMIC is supported on Arm64.
A workaround is to run Duplicati with x64 emulation if more advanced VSS features are needed (HyperV and MSSQL support).
This PR also updates options and filters out unsupported options for each operating system, so options that are not supported by the current OS are not reported and will give warnings if they are used, as opposed to just being ignored.
The release builder project has been updated to exclude the unused project, and purge unwanted outputs.
This fixes the restore issues as all sources will now appear as if they were originally part of the source file system.
The backend implementation has now been simplified so the backends only return names of entries with no path information. Most backends already do this, but the S3 backends did not, so this was fixed as well.
This also clears up the interfaces, so the backend does not know about the `ISourceProviderEntry`. All mapping is done by the `BackendSourceProvider`, making it simpler to support other backends as sources.
Made the SMBShareConnection slightly more robust.
Introduced v2 List API to S3 backend, currently it retains v1 as the default.
Changed S3 backends to not recurse, potentially making smaller listings. This option can be disabled if it breaks things.
Added support for relative paths in the SSH backend.
With this interface it is possible to wrap the current support for snapshots and USN and simplify the enumeration.
This makes a number of assumptions into fields such as `IsMetaEntry` and `IsRootEntry` that removes code that was checking for various properties.
This first commit has support for VSS and USN as well as "naked" files, keeping feature parity.
There is also an experimental support for loading a backend-as-a-source. The support for this is currently limited as the backends need to be extended to support a folder concept.
When setting the folder permissions on an existing folder, it would remove the permissions on items inside the folder.
This would cause the files and subfolders to have zero permissions, and reject any interaction.
Added support for `--portable-mode` and `--server-datafolder` for the CLI, ServerUtil, and Agent.
Fixed a few places where file reads were not cached properly.
Moved some responsibilities of UpdaterManager into DataFolderManager.
This now supports storing `machineid.txt` and `installation.txt` inside the path pointed to by `--server-datafolder` or alternatively with `--portable-mode`.
It is possible that some fringe backwards compatibility is lost with this update.
Fixed an issue with AutoUpdater crashing on check/download.
This fixes#5902
None of these changes have impact on code execution, they are mainly part of the effort to remove all build warnings.
The removal of Thread.ResetAbort leaves a TODO for us to integrate CancelationToken when it gets propagated down here on future changes.
Kenneth Skovhede