Moves common COM type to shared corelib partition (dotnet/corert#6782)

* Moves common COM type to shared corelib partition

* Moves GetHRForException to PInvokeMarshal

* Add temporary CORECLR ifdef to ArrayWithOffset

* Apply cleanup from CoreCLR

Signed-off-by: dotnet-bot <dotnet-bot@microsoft.com>

25 files changed, 563 insertions, 0 deletions

diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/AllowReversePInvokeCallsAttribute.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/AllowReversePInvokeCallsAttribute.cs
new file mode 100644
index 0000000000..cb640a7a8c
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/AllowReversePInvokeCallsAttribute.cs
@@ -0,0 +1,16 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    // To be used on methods that sink reverse P/Invoke calls.
+    // This attribute was a Silverlight security measure, currently ignored.
+    [AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = false)]
+    public sealed class AllowReversePInvokeCallsAttribute : Attribute
+    {
+        public AllowReversePInvokeCallsAttribute()
+        {
+        }
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ArrayWithOffset.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ArrayWithOffset.cs
new file mode 100644
index 0000000000..d246f55748
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ArrayWithOffset.cs
@@ -0,0 +1,98 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Runtime.CompilerServices;
+
+namespace System.Runtime.InteropServices
+{
+    public struct ArrayWithOffset
+    {
+        // From MAX_SIZE_FOR_INTEROP in mlinfo.h
+        private const int MaxSizeForInterop = 0x7ffffff0;
+
+        public ArrayWithOffset(object array, int offset)
+        {
+            m_array = array;
+            m_offset = offset;
+            m_count = 0;
+            m_count = CalculateCount();
+        }
+
+        public object GetArray() => m_array;
+
+        public int GetOffset() => m_offset;
+
+        public override int GetHashCode() => m_count + m_offset;
+
+        public override bool Equals(object obj)
+        {
+            return obj is ArrayWithOffset && Equals((ArrayWithOffset)obj);
+        }
+
+        public bool Equals(ArrayWithOffset obj)
+        {
+            return obj.m_array == m_array && obj.m_offset == m_offset && obj.m_count == m_count;
+        }
+
+        public static bool operator ==(ArrayWithOffset a, ArrayWithOffset b)
+        {
+            return a.Equals(b);
+        }
+
+        public static bool operator !=(ArrayWithOffset a, ArrayWithOffset b)
+        {
+            return !(a == b);
+        }
+
+#if !CORECLR // TODO: Cleanup
+        private int CalculateCount()
+        {
+            if (m_array == null)
+            {
+                if (m_offset != 0)
+                {
+                    throw new IndexOutOfRangeException(SR.IndexOutOfRange_ArrayWithOffset);
+                }
+
+                return 0;
+            }
+            else
+            {
+                Array arrayObj = m_array as Array;
+                if (arrayObj == null)
+                {
+                    throw new ArgumentException(SR.Argument_NotIsomorphic);
+                }
+
+                if (arrayObj.Rank != 1)
+                {
+                    throw new ArgumentException(SR.Argument_NotIsomorphic);
+                }
+
+                if (!arrayObj.IsBlittable())
+                {
+                    throw new ArgumentException(SR.Argument_NotIsomorphic);
+                }
+
+                int totalSize = checked(arrayObj.Length * arrayObj.GetElementSize());
+                if (totalSize > MaxSizeForInterop)
+                {
+                    throw new ArgumentException(SR.Argument_StructArrayTooLarge);
+                }
+
+                if (m_offset > totalSize)
+                {
+                    throw new IndexOutOfRangeException(SR.IndexOutOfRange_ArrayWithOffset);
+                }
+
+                return totalSize - m_offset;
+            }
+        }
+#endif // !CORECLR
+
+        private object m_array;
+        private int m_offset;
+        private int m_count;
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/BStrWrapper.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/BStrWrapper.cs
new file mode 100644
index 0000000000..f6eee34264
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/BStrWrapper.cs
@@ -0,0 +1,22 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    // Wrapper that is converted to a variant with VT_BSTR.
+    public sealed class BStrWrapper
+    {
+        public BStrWrapper(string value)
+        {
+            WrappedObject = value;
+        }
+
+        public BStrWrapper(object value)
+        {
+            WrappedObject = (string)value;
+        }
+
+        public string WrappedObject { get; }
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ClassInterfaceAttribute.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ClassInterfaceAttribute.cs
new file mode 100644
index 0000000000..59d79ff443
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ClassInterfaceAttribute.cs
@@ -0,0 +1,21 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    [AttributeUsage(AttributeTargets.Assembly | AttributeTargets.Class, Inherited = false)]
+    public sealed class ClassInterfaceAttribute : Attribute
+    {
+        public ClassInterfaceAttribute(ClassInterfaceType classInterfaceType)
+        {
+            Value = classInterfaceType;
+        }
+        public ClassInterfaceAttribute(short classInterfaceType)
+        {
+            Value = (ClassInterfaceType)classInterfaceType;
+        }
+
+        public ClassInterfaceType Value { get; }
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ClassInterfaceType.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ClassInterfaceType.cs
new file mode 100644
index 0000000000..ef1fe84194
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ClassInterfaceType.cs
@@ -0,0 +1,13 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    public enum ClassInterfaceType
+    {
+        None = 0,
+        AutoDispatch = 1,
+        AutoDual = 2
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/CoClassAttribute.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/CoClassAttribute.cs
new file mode 100644
index 0000000000..4be6622c3d
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/CoClassAttribute.cs
@@ -0,0 +1,17 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    [AttributeUsage(AttributeTargets.Interface, Inherited = false)]
+    public sealed class CoClassAttribute : Attribute
+    {
+        public CoClassAttribute(Type coClass)
+        {
+            CoClass = coClass;
+        }
+
+        public Type CoClass { get; }
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ComDefaultInterfaceAttribute.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ComDefaultInterfaceAttribute.cs
new file mode 100644
index 0000000000..1b84f5f561
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ComDefaultInterfaceAttribute.cs
@@ -0,0 +1,17 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    [AttributeUsage(AttributeTargets.Class, Inherited = false)]
+    public sealed class ComDefaultInterfaceAttribute : Attribute
+    {
+        public ComDefaultInterfaceAttribute(Type defaultInterface)
+        {
+            Value = defaultInterface;
+        }
+
+        public Type Value { get; }
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ComEventInterfaceAttribute.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ComEventInterfaceAttribute.cs
new file mode 100644
index 0000000000..d4ccc702e0
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ComEventInterfaceAttribute.cs
@@ -0,0 +1,19 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    [AttributeUsage(AttributeTargets.Interface, Inherited = false)]
+    public sealed class ComEventInterfaceAttribute : Attribute
+    {
+        public ComEventInterfaceAttribute(Type SourceInterface, Type EventProvider)
+        {
+            this.SourceInterface = SourceInterface;
+            this.EventProvider = EventProvider;
+        }
+
+        public Type SourceInterface { get; }
+        public Type EventProvider { get; }
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ComMemberType.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ComMemberType.cs
new file mode 100644
index 0000000000..4be75b03b9
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ComMemberType.cs
@@ -0,0 +1,13 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    public enum ComMemberType
+    {
+        Method = 0,
+        PropGet = 1,
+        PropSet = 2
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ComSourceInterfacesAttribute.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ComSourceInterfacesAttribute.cs
new file mode 100644
index 0000000000..484a29a365
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ComSourceInterfacesAttribute.cs
@@ -0,0 +1,37 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    [AttributeUsage(AttributeTargets.Class, Inherited = true)]
+    public sealed class ComSourceInterfacesAttribute : Attribute
+    {
+        public ComSourceInterfacesAttribute(String sourceInterfaces)
+        {
+            Value = sourceInterfaces;
+        }
+
+        public ComSourceInterfacesAttribute(Type sourceInterface)
+        {
+            Value = sourceInterface.FullName;
+        }
+
+        public ComSourceInterfacesAttribute(Type sourceInterface1, Type sourceInterface2)
+        {
+            Value = sourceInterface1.FullName + "\0" + sourceInterface2.FullName;
+        }
+
+        public ComSourceInterfacesAttribute(Type sourceInterface1, Type sourceInterface2, Type sourceInterface3)
+        {
+            Value = sourceInterface1.FullName + "\0" + sourceInterface2.FullName + "\0" + sourceInterface3.FullName;
+        }
+
+        public ComSourceInterfacesAttribute(Type sourceInterface1, Type sourceInterface2, Type sourceInterface3, Type sourceInterface4)
+        {
+            Value = sourceInterface1.FullName + "\0" + sourceInterface2.FullName + "\0" + sourceInterface3.FullName + "\0" + sourceInterface4.FullName;
+        }
+
+        public String Value { get; }
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/CurrencyWrapper.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/CurrencyWrapper.cs
new file mode 100644
index 0000000000..95d8260fcc
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/CurrencyWrapper.cs
@@ -0,0 +1,25 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    // Wrapper that is converted to a variant with VT_CURRENCY.
+    public sealed class CurrencyWrapper
+    {
+        public CurrencyWrapper(Decimal obj)
+        {
+            WrappedObject = obj;
+        }
+
+        public CurrencyWrapper(Object obj)
+        {
+            if (!(obj is Decimal))
+                throw new ArgumentException(SR.Arg_MustBeDecimal, nameof(obj));
+
+            WrappedObject = (Decimal)obj;
+        }
+
+        public Decimal WrappedObject { get; }
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/CustomQueryInterfaceMode.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/CustomQueryInterfaceMode.cs
new file mode 100644
index 0000000000..7b5eddacf4
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/CustomQueryInterfaceMode.cs
@@ -0,0 +1,12 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    public enum CustomQueryInterfaceMode
+    {
+        Ignore = 0,
+        Allow = 1,
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/CustomQueryInterfaceResult.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/CustomQueryInterfaceResult.cs
new file mode 100644
index 0000000000..1e1d3fd7ea
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/CustomQueryInterfaceResult.cs
@@ -0,0 +1,14 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    // The enum of the return value of IQuerable.GetInterface
+    public enum CustomQueryInterfaceResult
+    {
+        Handled = 0,
+        NotHandled = 1,
+        Failed = 2,
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/DefaultParameterValueAttribute.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/DefaultParameterValueAttribute.cs
new file mode 100644
index 0000000000..8ab7ee2e01
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/DefaultParameterValueAttribute.cs
@@ -0,0 +1,23 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    //
+    // The DefaultParameterValueAttribute is used in C# to set
+    // the default value for parameters when calling methods
+    // from other languages. This is particularly useful for
+    // methods defined in COM interop interfaces.
+    //
+    [AttributeUsageAttribute(AttributeTargets.Parameter)]
+    public sealed class DefaultParameterValueAttribute : Attribute
+    {
+        public DefaultParameterValueAttribute(object value)
+        {
+            Value = value;
+        }
+
+        public object Value { get; }
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/DispIdAttribute.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/DispIdAttribute.cs
new file mode 100644
index 0000000000..1f147280c5
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/DispIdAttribute.cs
@@ -0,0 +1,17 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    [AttributeUsage(AttributeTargets.Method | AttributeTargets.Field | AttributeTargets.Property | AttributeTargets.Event, Inherited = false)]
+    public sealed class DispIdAttribute : Attribute
+    {
+        public DispIdAttribute(int dispId)
+        {
+            Value = dispId;
+        }
+
+        public int Value { get; }
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/DispatchWrapper.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/DispatchWrapper.cs
new file mode 100644
index 0000000000..b5c1d2b0cc
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/DispatchWrapper.cs
@@ -0,0 +1,43 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+//
+
+//
+
+/*=============================================================================
+**
+** Class: DispatchWrapper.
+**
+**
+** Purpose: Wrapper that is converted to a variant with VT_DISPATCH.
+**
+**
+=============================================================================*/
+
+namespace System.Runtime.InteropServices
+{
+    public sealed class DispatchWrapper
+    {
+        public DispatchWrapper(Object obj)
+        {
+            if (obj != null)
+            {
+#if CORERT
+                throw new PlatformNotSupportedException();
+#else
+                // Make sure this guy has an IDispatch
+                IntPtr pdisp = Marshal.GetIDispatchForObject(obj);
+
+                // If we got here without throwing an exception, the QI for IDispatch succeeded.
+                Marshal.Release(pdisp);
+
+                WrappedObject = obj;
+#endif
+            }
+        }
+
+        public object WrappedObject { get; }
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ErrorWrapper.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ErrorWrapper.cs
new file mode 100644
index 0000000000..d25f0231a4
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ErrorWrapper.cs
@@ -0,0 +1,29 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    // Wrapper that is converted to a variant with VT_ERROR.
+    public sealed class ErrorWrapper
+    {
+        public ErrorWrapper(int errorCode)
+        {
+            ErrorCode = errorCode;
+        }
+
+        public ErrorWrapper(object errorCode)
+        {
+            if (!(errorCode is int))
+                throw new ArgumentException(SR.Arg_MustBeInt32, nameof(errorCode));
+            ErrorCode = (int)errorCode;
+        }
+
+        public ErrorWrapper(Exception e)
+        {
+            ErrorCode = Marshal.GetHRForException(e);
+        }
+
+        public int ErrorCode { get; }
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ICustomAdapter.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ICustomAdapter.cs
new file mode 100644
index 0000000000..6dd90e2dac
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ICustomAdapter.cs
@@ -0,0 +1,13 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    // This the base interface that custom adapters can chose to implement when they want to expose the underlying object.
+    public interface ICustomAdapter
+    {
+        [return: MarshalAs(UnmanagedType.IUnknown)]
+        object GetUnderlyingObject();
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ICustomFactory.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ICustomFactory.cs
new file mode 100644
index 0000000000..799db6a2d3
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ICustomFactory.cs
@@ -0,0 +1,11 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    public interface ICustomFactory
+    {
+        MarshalByRefObject CreateInstance(Type serverType);
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ICustomMarshaler.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ICustomMarshaler.cs
new file mode 100644
index 0000000000..cf442d4fde
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ICustomMarshaler.cs
@@ -0,0 +1,20 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    // This the base interface that must be implemented by all custom marshalers.
+    public interface ICustomMarshaler
+    {
+        object MarshalNativeToManaged(IntPtr pNativeData);
+
+        IntPtr MarshalManagedToNative(object ManagedObj);
+
+        void CleanUpNativeData(IntPtr pNativeData);
+
+        void CleanUpManagedData(object ManagedObj);
+
+        int GetNativeDataSize();
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ICustomQueryInterface.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ICustomQueryInterface.cs
new file mode 100644
index 0000000000..a91fd7f5fb
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ICustomQueryInterface.cs
@@ -0,0 +1,12 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    // This the interface that be implemented by class that want to customize the behavior of QueryInterface.
+    public interface ICustomQueryInterface
+    {
+        CustomQueryInterfaceResult GetInterface([In]ref Guid iid, out IntPtr ppv);
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ProgIdAttribute.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ProgIdAttribute.cs
new file mode 100644
index 0000000000..50d69ee6e3
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/ProgIdAttribute.cs
@@ -0,0 +1,17 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    [AttributeUsage(AttributeTargets.Class, Inherited = false)]
+    public sealed class ProgIdAttribute : Attribute
+    {
+        public ProgIdAttribute(String progId)
+        {
+            Value = progId;
+        }
+
+        public String Value { get; }
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/TypeIdentifierAttribute.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/TypeIdentifierAttribute.cs
new file mode 100644
index 0000000000..6dfe9df780
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/TypeIdentifierAttribute.cs
@@ -0,0 +1,20 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    [AttributeUsage(AttributeTargets.Interface | AttributeTargets.Enum | AttributeTargets.Struct | AttributeTargets.Delegate, AllowMultiple = false, Inherited = false)]
+    public sealed class TypeIdentifierAttribute : Attribute
+    {
+        public TypeIdentifierAttribute() { }
+        public TypeIdentifierAttribute(string scope, string identifier)
+        {
+            Scope = scope;
+            Identifier = identifier;
+        }
+
+        public string Scope { get; }
+        public string Identifier { get; }
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/UnknownWrapper.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/UnknownWrapper.cs
new file mode 100644
index 0000000000..9d1599af6e
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/UnknownWrapper.cs
@@ -0,0 +1,17 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    // Wrapper that is converted to a variant with VT_UNKNOWN.
+    public sealed class UnknownWrapper
+    {
+        public UnknownWrapper(Object obj)
+        {
+            WrappedObject = obj;
+        }
+
+        public Object WrappedObject { get; }
+    }
+}
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/VariantWrapper.cs b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/VariantWrapper.cs
new file mode 100644
index 0000000000..3d75da1994
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/InteropServices/VariantWrapper.cs
@@ -0,0 +1,17 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Runtime.InteropServices
+{
+    // Wrapper that is converted to a variant with VT_BYREF | VT_VARIANT.
+    public sealed class VariantWrapper
+    {
+        public VariantWrapper(Object obj)
+        {
+            WrappedObject = obj;
+        }
+
+        public Object WrappedObject { get; }
+    }
+}