Added Wasi2Configuration

src/Store.cs

@@ -72,6 +72,13 @@ internal void SetWasiConfiguration(WasiConfiguration config)
             }
         }
 
+        internal void SetWasiConfiguration(Wasi2Configuration config)
+        {
+            var wasi = config.Build();
+            Native.wasmtime_context_set_wasip2(handle, wasi.DangerousGetHandle());
+            wasi.SetHandleAsInvalid();
+        }
+
         /// <summary>
         /// Configures the relative deadline at which point WebAssembly code will trap.
         /// </summary>
@@ -95,6 +102,9 @@ private static class Native
             [DllImport(Engine.LibraryName)]
             public static extern IntPtr wasmtime_context_set_wasi(IntPtr handle, IntPtr config);
 
+            [DllImport(Engine.LibraryName)]
+            public static extern void wasmtime_context_set_wasip2(IntPtr handle, IntPtr config2);
+
             [DllImport(Engine.LibraryName)]
             public static extern void wasmtime_context_set_epoch_deadline(IntPtr handle, ulong ticksBeyondCurrent);
 
@@ -239,6 +249,16 @@ public void SetWasiConfiguration(WasiConfiguration config)
             System.GC.KeepAlive(this);
         }
 
+        /// <summary>
+        /// Configures WASI2 within the store.
+        /// </summary>
+        /// <param name="config">The WASI2 configuration to use.</param>
+        public void SetWasiConfiguration(Wasi2Configuration config)
+        {
+            Context.SetWasiConfiguration(config);
+            System.GC.KeepAlive(this);
+        }
+
         /// <summary>
         /// Configures the relative deadline at which point WebAssembly code will trap.
         /// </summary>

src/Wasi2Configuration.cs

@@ -0,0 +1,110 @@
+using Microsoft.Win32.SafeHandles;
+using System;
+using System.Runtime.InteropServices;
+
+namespace Wasmtime;
+
+/// <summary>
+/// Represents a WASI2 configuration.
+/// </summary>
+public class Wasi2Configuration
+{
+    private bool _inheritStandardInput;
+    private bool _inheritStandardOutput;
+    private bool _inheritStandardError;
+
+    /// <summary>
+    /// Sets the configuration to inherit stdin.
+    /// </summary>
+    /// <returns>Returns the current configuration.</returns>
+    public Wasi2Configuration WithInheritedStandardInput()
+    {
+        _inheritStandardInput = true;
+        return this;
+    }
+
+    /// <summary>
+    /// Sets the configuration to inherit stdout.
+    /// </summary>
+    /// <returns>Returns the current configuration.</returns>
+    public Wasi2Configuration WithInheritedStandardOutput()
+    {
+        _inheritStandardOutput = true;
+        return this;
+    }
+
+    /// <summary>
+    /// Sets the configuration to inherit stderr.
+    /// </summary>
+    /// <returns>Returns the current configuration.</returns>
+    public Wasi2Configuration WithInheritedStandardError()
+    {
+        _inheritStandardError = true;
+        return this;
+    }
+
+    internal Handle Build()
+    {
+        var config = new Handle(Native.wasmtime_wasip2_config_new());
+
+        SetStandardIn(config);
+        SetStandardOut(config);
+        SetStandardError(config);
+
+        return config;
+    }
+
+    private void SetStandardIn(Handle config)
+    {
+        if (_inheritStandardInput)
+            Native.wasmtime_wasip2_config_inherit_stdin(config);
+    }
+
+    private void SetStandardOut(Handle config)
+    {
+        if (_inheritStandardOutput)
+            Native.wasmtime_wasip2_config_inherit_stdout(config);
+    }
+
+    private void SetStandardError(Handle config)
+    {
+        if (_inheritStandardError)
+            Native.wasmtime_wasip2_config_inherit_stderr(config);
+    }
+
+    internal class Handle : SafeHandleZeroOrMinusOneIsInvalid
+    {
+        public Handle(IntPtr handle)
+            : base(true)
+        {
+            SetHandle(handle);
+        }
+
+        protected override bool ReleaseHandle()
+        {
+            Native.wasmtime_wasip2_config_delete(handle);
+            return true;
+        }
+    }
+
+    private static class Native
+    {
+        [DllImport(Engine.LibraryName)]
+        public static extern IntPtr wasmtime_wasip2_config_new();
+
+        [DllImport(Engine.LibraryName)]
+        public static extern void wasmtime_wasip2_config_delete(IntPtr config);
+
+        [DllImport(Engine.LibraryName)]
+        public static extern void wasmtime_wasip2_config_inherit_stdin(Handle config);
+
+        [DllImport(Engine.LibraryName)]
+        public static extern void wasmtime_wasip2_config_inherit_stdout(Handle config);
+
+        [DllImport(Engine.LibraryName)]
+        public static extern void wasmtime_wasip2_config_inherit_stderr(Handle config);
+
+        [DllImport(Engine.LibraryName)]
+        public static extern unsafe void wasmtime_wasip2_config_arg(Handle config, char* arg, nuint arg_len);
+    }
+}

tests/Wasi2Tests.cs

@@ -0,0 +1,18 @@
+using Xunit;
+
+namespace Wasmtime.Tests;
+
+public class Wasi2Tests
+{
+    [Fact]
+    public void ItSetsWasi2Config()
+    {
+        using var engine = new Engine();
+        using var store  = new Store(engine);
+
+        var config = new Wasi2Configuration();
+        config.WithInheritedStandardInput();
+
+        store.SetWasiConfiguration(config);
+    }
+}