UnsatisfiedLinkError - how to troubleshoot?

[jjolidon]

Hi all,

I've successfully used IKVM to use net.jsign in my .net app - on Windows.

When I run my tests in Linux (dotnet sdk 6.0 docker image) I get an UnsatisfiedLinkError. Significant trace below.
When I run on my WSL2 Ubuntu instal I get "No usable version of libssl was found".

How can I troubleshoot the issues, esp. getting information about the missing native lib in the docker environment?
Is there anything I need to do to get that to run on linux?

java.lang.UnsatisfiedLinkError: sun/nio/ch/FileChannelImpl.ikvm_mmap(Lcli/System/IO/FileStream;BBJI)Lcli/System/IntPtr;
  Stack Trace:
      at IKVM.Runtime.JNI.JNIFrame.GetFuncPtr(CallerID callerID, String clazz, String name, String sig)
   at sun.nio.ch.FileChannelImpl.ikvm_mmap(FileStream handle, Byte writeable, Byte copy_on_write, Int64 position, Int32 size)
   at sun.nio.ch.FileChannelImpl.mapViewOfFilePosix(FileStream fs, Int32 prot, Int64 position, Int64 length)
   at sun.nio.ch.FileChannelImpl.map0(Int32 prot, Int64 position, Int64 length)
   at sun.nio.ch.FileChannelImpl.map(MapMode mode, Int64 position, Int64 size)
   at net.jsign.poi.poifs.nio.FileBackedDataSource.read(Int32 length, Int64 position)
   at net.jsign.poi.poifs.filesystem.POIFSFileSystem.getBlockAt(Int32 offset)
   at net.jsign.poi.poifs.filesystem.POIFSFileSystem.readBAT(Int32 , ChainLoopDetector )
   at net.jsign.poi.poifs.filesystem.POIFSFileSystem.readCoreContents()
   at net.jsign.poi.poifs.filesystem.POIFSFileSystem..ctor(FileChannel , File , Boolean , Boolean , Boolean )
   at net.jsign.poi.poifs.filesystem.POIFSFileSystem..ctor(File file, Boolean readOnly)
   at net.jsign.msi.MSIFile..ctor(File file)

[wasabii]

Looks like the memory mapped files feature is broke on Linux.

[jjolidon]

Okay. Should I open a bug report?

[jjolidon]

Or is it related to #218 ?

[wasabii]

It is not related to #208, which is about missing POSIX attributes, not about memory mapped files.

[wasabii]

But yes a bug should be opened.