trying to fix Unix stat yet again

code/Infrastructure/Infrastructure.csproj

@@ -18,6 +18,7 @@
       <PackageReference Include="MassTransit" Version="8.3.6" />
       <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="9.0.2" />
       <PackageReference Include="Microsoft.Extensions.Http" Version="9.0.2" />
+      <PackageReference Include="Mono.Posix.NETStandard" Version="1.0.0" />
       <PackageReference Include="Quartz" Version="3.13.1" />
       <PackageReference Include="Scrutor" Version="6.0.1" />
     </ItemGroup>

code/Infrastructure/Verticals/Files/HardlinkFileService.cs

@@ -1,6 +1,7 @@
 using System.Runtime.InteropServices;
 using Microsoft.Extensions.Logging;
 using Microsoft.Win32.SafeHandles;
+using Mono.Unix.Native;
 
 namespace Infrastructure.Verticals.Files;
 
@@ -79,42 +80,18 @@ public class HardlinkFileService : IHardlinkFileService
     {
         try
         {
-            Stat stat = new();
+            if (Syscall.stat(filePath, out Stat stat) == 0)
-            
-            if (stat_file(filePath, ref stat) == 0)
             {
                 // TODO remove
-                _logger.LogDebug("file {file} has {links} links", filePath, stat.st_nlink);
+                _logger.LogDebug("file {file} has links", filePath);
                 return stat.st_nlink;
             }
         }
         catch (Exception exception)
         {
-            // TODO log download name?
+            _logger.LogError(exception, "failed to stat file {file}", filePath);
-            _logger.LogError(exception, "failed to stat Unix file {file}", filePath);
         }
-
+        
         return 0;
     }
-
-    [DllImport("libc", EntryPoint = "stat", SetLastError = true)]
-    static extern int stat_file(string path, ref Stat statStruct);
-
-    [StructLayout(LayoutKind.Sequential)]
-    struct Stat
-    {
-        public ulong st_dev;
-        public ulong st_ino;   // Inode number
-        public ulong st_nlink; // Hard link count
-        public uint st_mode;
-        public uint st_uid;
-        public uint st_gid;
-        public ulong st_rdev;
-        public long st_size;
-        public long st_blksize;
-        public long st_blocks;
-        public long st_atime;
-        public long st_mtime;
-        public long st_ctime;
-    }
 }