Explicit charset defintions on P/Invoke calls

Closes #10

Author: sgrottel

Dockerfile

@@ -1,6 +1,20 @@
-# https://hub.docker.com/_/microsoft-dotnet-runtime/
-FROM mcr.microsoft.com/dotnet/runtime:6.0
+#
+# This docker can be used to test the linux implementation of FindExecutable
+#
+# On a Windows dev PC run:
+#   docker build -t sgr/findexecutabletest .    
+#   docker run --rm -v ".\bin\Debug\net10.0:/myapp" -t sgr/findexecutabletest
+#
+# Adjust path of the volume mount if you are to test other build flavors.
+#
+
+# https://hub.docker.com/_/microsoft-dotnet-runtime/
+FROM mcr.microsoft.com/dotnet/runtime:10.0
+
 RUN apt-get update && apt-get install -y git
-COPY --chmod=444 *.* /myapp/
+
+VOLUME /myapp
+
 WORKDIR /myapp
+
 ENTRYPOINT ["dotnet", "FindExecutable.dll"]

FindExecutable.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net10.0</TargetFramework>
     <ImplicitUsings>disable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>

FindExecutable/FindExecutable.cs

@@ -145,7 +145,7 @@ public static class FindExecutable
         #region Test if File is Executable
 
         #region Windows P/Invoke
-        [DllImport("shell32.dll")]
+        [DllImport("shell32.dll", CharSet = CharSet.Unicode)]
         private static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, IntPtr psfi, uint cbSizeFileInfo, uint uFlags);
         private const uint SHGFI_EXETYPE = 0x000002000;
         #endregion
@@ -185,7 +185,7 @@ private static bool IsExecutableOnWindow(string path)
         }
 
         #region Linux P/Invoke
-        [DllImport("libc", SetLastError = true)]
+        [DllImport("libc", CharSet = CharSet.Ansi, SetLastError = true)]
         private static extern int access(string pathname, int mode);
         // https://codebrowser.dev/glibc/glibc/posix/unistd.h.html#283
         private const int X_OK = 1;