update GetNextIPAddress signature

Commit migrated from https://github.com/dotnet/corefx/commit/f0c299f4dc45e833fdfa89252e3d2c5f2445c0b8

diff --git a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.HostEntry.cs b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.HostEntry.cs
index 6ca19c4..944a235 100644 (file)
--- a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.HostEntry.cs
+++ b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.HostEntry.cs
@@ -31,22 +31,27 @@ internal static partial class Interop
             NO_DATA = 4,
             NO_ADDRESS = NO_DATA,
         }
+
+        //opaque structure to maintain consistency with native function signature
+        internal unsafe struct addrinfo
+        {
+            
+        }    
         
         [StructLayout(LayoutKind.Sequential)]
         internal unsafe struct HostEntry
         {
             internal byte* CanonicalName;     // Canonical Name of the Host
             internal byte** Aliases;          // List of aliases for the host
-            internal void* AddressListHandle; // Handle for socket address list
-            internal int IPAddressCount;      // Number of IP addresses in the list
-            private int _handleType;          // Opaque handle type information.
+            internal addrinfo* AddressListHandle; // Handle for socket address list
+            internal int IPAddressCount;      // Number of IP addresses in the list            
         }
 
         [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetHostEntryForName")]
         internal static extern unsafe int GetHostEntryForName(string address, HostEntry* entry);
         
         [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetNextIPAddress")]
-        internal static extern unsafe int GetNextIPAddress(HostEntry* entry, void** addressListHandle, IPAddress* endPoint);
+        internal static extern unsafe int GetNextIPAddress(HostEntry* entry, addrinfo** addressListHandle, IPAddress* endPoint);
 
         [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_FreeHostEntry")]
         internal static extern unsafe void FreeHostEntry(HostEntry* entry);