Switch over miscellaneous DllImports to GeneratedDllImport.

eng/generators.targets

@@ -20,13 +20,15 @@
                           ('@(Reference)' != ''
                             and @(Reference->AnyHaveMetadataValue('Identity', 'System.Runtime.InteropServices')))
                           or ('@(ProjectReference)' != ''
-                            and @(ProjectReference->AnyHaveMetadataValue('Identity', '$(CoreLibProject)'))))" />
+                            and @(ProjectReference->AnyHaveMetadataValue('Identity', '$(CoreLibProject)')))
+                          or ('$(NetCoreAppCurrentTargetFrameworkMoniker)' == '$(TargetFrameworkMoniker)'
+                            and '$(DisableImplicitAssemblyReferences)' == 'false'))" />
     <EnabledGenerators Include="DllImportGenerator"
                        Condition="'$(EnableDllImportGenerator)' == ''
                         and '$(IsFrameworkSupportFacade)' != 'true'
                         and '$(IsSourceProject)' == 'true'
                         and '$(MSBuildProjectExtension)' == '.csproj'
-                        and ('$(TargetFrameworkIdentifier)' == '.NETStandard' or '$(TargetFrameworkIdentifier)' == '.NETFramework')" />
+                        and ('$(TargetFrameworkIdentifier)' == '.NETStandard' or '$(TargetFrameworkIdentifier)' == '.NETFramework' or ('$(TargetFrameworkIdentifier)' == '.NETCoreApp' and $([MSBuild]::VersionLessThan($(TargetFrameworkVersion), '$(NetCoreAppCurrentVersion)'))))" />
   </ItemGroup>
 
   <!-- Use this complex ItemGroup-based filtering to add the ProjectReference to make sure dotnet/runtime stays compatible with NuGet Static Graph Restore. -->

src/libraries/Common/src/Interop/Android/Interop.Logcat.cs

@@ -8,8 +8,8 @@ internal static partial class Interop
 {
     internal static partial class Logcat
     {
-        [DllImport(Libraries.Liblog)]
-        private static extern void __android_log_print(LogLevel level, string? tag, string format, string args, IntPtr ptr);
+        [GeneratedDllImport(Libraries.Liblog, CharSet = CharSet.Ansi)]
+        private static partial void __android_log_print(LogLevel level, string? tag, string format, string args, IntPtr ptr);
 
         internal static void AndroidLogPrint(LogLevel level, string? tag, string message) =>
             __android_log_print(level, tag, "%s", message, IntPtr.Zero);

src/libraries/Common/src/Interop/Interop.ICU.iOS.cs

@@ -8,7 +8,7 @@ internal static partial class Interop
 {
     internal static partial class Globalization
     {
-        [DllImport(Libraries.GlobalizationNative, EntryPoint = "GlobalizationNative_LoadICUData")]
-        internal static extern int LoadICUData(string path);
+        [GeneratedDllImport(Libraries.GlobalizationNative, EntryPoint = "GlobalizationNative_LoadICUData", CharSet = CharSet.Ansi)]
+        internal static partial int LoadICUData(string path);
     }
 }

src/libraries/Common/src/Interop/OSX/System.Native/Interop.SearchPath.cs

@@ -8,8 +8,8 @@ internal static partial class Interop
 {
     internal static partial class Sys
     {
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_SearchPath")]
-        internal static extern string? SearchPath(NSSearchPathDirectory folderId);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_SearchPath", CharSet = CharSet.Ansi)]
+        internal static partial string? SearchPath(NSSearchPathDirectory folderId);
 
         internal enum NSSearchPathDirectory
         {

src/libraries/Common/src/Interop/OSX/System.Native/Interop.iOSSupportVersion.cs

@@ -8,7 +8,7 @@ internal static partial class Interop
 {
     internal static partial class Sys
     {
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_iOSSupportVersion")]
-        internal static extern string iOSSupportVersion();
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_iOSSupportVersion", CharSet = CharSet.Ansi)]
+        internal static partial string iOSSupportVersion();
     }
 }

src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetNodeName.cs

@@ -10,8 +10,8 @@ internal static partial class Interop
 {
     internal static partial class Sys
     {
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetNodeName", SetLastError = true)]
-        private static extern unsafe int GetNodeName(char* name, out int len);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetNodeName", SetLastError = true)]
+        private static unsafe partial int GetNodeName(char* name, out int len);
 
         internal static unsafe string GetNodeName()
         {

src/libraries/Common/src/Interop/Unix/System.Native/Interop.MemSet.cs

@@ -8,7 +8,7 @@ internal static partial class Interop
 {
     internal static partial class Sys
     {
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_MemSet")]
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_MemSet")]
         internal static extern unsafe void* MemSet(void *s, int c, UIntPtr n);
     }
 }

src/libraries/Common/src/Interop/Windows/Advapi32/Interop.ChangeServiceConfig2.cs

@@ -9,10 +9,13 @@ internal static partial class Interop
 {
     internal static partial class Advapi32
     {
-        [DllImport(Libraries.Advapi32, CharSet = CharSet.Unicode, SetLastError = true)]
-        public static extern bool ChangeServiceConfig2(SafeServiceHandle serviceHandle, uint infoLevel, ref SERVICE_DESCRIPTION serviceDesc);
+        [GeneratedDllImport(Libraries.Advapi32, EntryPoint = "ChangeServiceConfig2W", ExactSpelling = true, SetLastError = true)]
+        public static partial bool ChangeServiceConfig2(SafeServiceHandle serviceHandle, uint infoLevel, ref SERVICE_DESCRIPTION serviceDesc);
 
-        [DllImport(Libraries.Advapi32, CharSet = CharSet.Unicode, SetLastError = true)]
+#pragma warning disable DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
+        // TODO: [DllImportGenerator] Switch to use GeneratedDllImport once we support non-blittable types.
+        [DllImport(Libraries.Advapi32, EntryPoint = "ChangeServiceConfig2W", ExactSpelling = true, SetLastError = true)]
         public static extern bool ChangeServiceConfig2(SafeServiceHandle serviceHandle, uint infoLevel, ref SERVICE_DELAYED_AUTOSTART_INFO serviceDesc);
+#pragma warning restore DLLIMPORTGENANALYZER015
     }
 }

src/libraries/Common/src/Interop/Windows/Advapi32/Interop.CreateService.cs

@@ -9,7 +9,7 @@ internal static partial class Interop
 {
     internal static partial class Advapi32
     {
-        [DllImport(Libraries.Advapi32, CharSet = CharSet.Unicode, SetLastError = true)]
+        [GeneratedDllImport(Libraries.Advapi32, CharSet = CharSet.Unicode, SetLastError = true)]
         public static extern IntPtr CreateService(SafeServiceHandle databaseHandle, string serviceName, string displayName, int access, int serviceType,
             int startType, int errorControl, string binaryPath, string loadOrderGroup, IntPtr pTagId, string dependencies,
             string servicesStartName, string password);

src/libraries/Common/src/Interop/Windows/Advapi32/Interop.DeleteService.cs

@@ -9,7 +9,7 @@ internal static partial class Interop
 {
     internal static partial class Advapi32
     {
-        [DllImport(Libraries.Advapi32, CharSet = CharSet.Unicode, SetLastError = true)]
-        public static extern bool DeleteService(SafeServiceHandle serviceHandle);
+        [GeneratedDllImport(Libraries.Advapi32, SetLastError = true)]
+        public static partial bool DeleteService(SafeServiceHandle serviceHandle);
     }
 }

src/libraries/Common/src/Interop/Windows/Kernel32/Interop.CheckTokenMembershipEx.cs

@@ -11,7 +11,7 @@ internal static partial class Kernel32
     {
         internal const uint CTMF_INCLUDE_APPCONTAINER = 0x00000001;
 
-        [DllImport(Interop.Libraries.Kernel32, SetLastError = true)]
-        internal static extern bool CheckTokenMembershipEx(SafeAccessTokenHandle TokenHandle, byte[] SidToCheck, uint Flags, ref bool IsMember);
+        [GeneratedDllImport(Interop.Libraries.Kernel32, SetLastError = true)]
+        internal static partial bool CheckTokenMembershipEx(SafeAccessTokenHandle TokenHandle, byte[] SidToCheck, uint Flags, ref bool IsMember);
     }
 }

src/libraries/Common/src/Interop/Windows/Kernel32/Interop.Threading.cs

@@ -11,40 +11,40 @@ internal static partial class Kernel32
     {
         internal const int WAIT_FAILED = unchecked((int)0xFFFFFFFF);
 
-        [DllImport(Libraries.Kernel32)]
-        internal static extern uint WaitForMultipleObjectsEx(uint nCount, IntPtr lpHandles, BOOL bWaitAll, uint dwMilliseconds, BOOL bAlertable);
+        [GeneratedDllImport(Libraries.Kernel32)]
+        internal static partial uint WaitForMultipleObjectsEx(uint nCount, IntPtr lpHandles, BOOL bWaitAll, uint dwMilliseconds, BOOL bAlertable);
 
-        [DllImport(Libraries.Kernel32)]
-        internal static extern uint WaitForSingleObject(IntPtr hHandle, uint dwMilliseconds);
+        [GeneratedDllImport(Libraries.Kernel32)]
+        internal static partial uint WaitForSingleObject(IntPtr hHandle, uint dwMilliseconds);
 
-        [DllImport(Libraries.Kernel32)]
-        internal static extern uint SignalObjectAndWait(IntPtr hObjectToSignal, IntPtr hObjectToWaitOn, uint dwMilliseconds, BOOL bAlertable);
+        [GeneratedDllImport(Libraries.Kernel32)]
+        internal static partial uint SignalObjectAndWait(IntPtr hObjectToSignal, IntPtr hObjectToWaitOn, uint dwMilliseconds, BOOL bAlertable);
 
-        [DllImport(Libraries.Kernel32)]
-        internal static extern void Sleep(uint milliseconds);
+        [GeneratedDllImport(Libraries.Kernel32)]
+        internal static partial void Sleep(uint milliseconds);
 
         internal const uint CREATE_SUSPENDED = 0x00000004;
         internal const uint STACK_SIZE_PARAM_IS_A_RESERVATION = 0x00010000;
 
-        [DllImport(Libraries.Kernel32)]
-        internal static extern unsafe SafeWaitHandle CreateThread(
+        [GeneratedDllImport(Libraries.Kernel32)]
+        internal static unsafe partial SafeWaitHandle CreateThread(
             IntPtr lpThreadAttributes,
             IntPtr dwStackSize,
             delegate* unmanaged<IntPtr, uint> lpStartAddress,
             IntPtr lpParameter,
             uint dwCreationFlags,
             out uint lpThreadId);
 
-        [DllImport(Libraries.Kernel32)]
-        internal static extern uint ResumeThread(SafeWaitHandle hThread);
+        [GeneratedDllImport(Libraries.Kernel32)]
+        internal static partial uint ResumeThread(SafeWaitHandle hThread);
 
-        [DllImport(Libraries.Kernel32)]
-        internal static extern IntPtr GetCurrentThread();
+        [GeneratedDllImport(Libraries.Kernel32)]
+        internal static partial IntPtr GetCurrentThread();
 
         internal const int DUPLICATE_SAME_ACCESS = 2;
 
-        [DllImport(Libraries.Kernel32, SetLastError = true)]
-        internal static extern bool DuplicateHandle(
+        [GeneratedDllImport(Libraries.Kernel32, SetLastError = true)]
+        internal static partial bool DuplicateHandle(
             IntPtr hSourceProcessHandle,
             IntPtr hSourceHandle,
             IntPtr hTargetProcessHandle,
@@ -66,10 +66,10 @@ internal enum ThreadPriority : int
             ErrorReturn = 0x7FFFFFFF
         }
 
-        [DllImport(Libraries.Kernel32)]
-        internal static extern ThreadPriority GetThreadPriority(SafeWaitHandle hThread);
+        [GeneratedDllImport(Libraries.Kernel32)]
+        internal static partial ThreadPriority GetThreadPriority(SafeWaitHandle hThread);
 
-        [DllImport(Libraries.Kernel32)]
-        internal static extern bool SetThreadPriority(SafeWaitHandle hThread, int nPriority);
+        [GeneratedDllImport(Libraries.Kernel32)]
+        internal static partial bool SetThreadPriority(SafeWaitHandle hThread, int nPriority);
     }
 }

src/libraries/Common/src/Interop/Windows/User32/Interop.SystemParametersInfo.cs

@@ -14,7 +14,7 @@ public enum SystemParametersAction : uint
             SPI_GETNONCLIENTMETRICS = 0x29
         }
 
-        [GeneratedDllImport(Libraries.User32, CharSet = CharSet.Unicode, ExactSpelling = true)]
+        [GeneratedDllImport(Libraries.User32)]
         public static unsafe partial bool SystemParametersInfoW(SystemParametersAction uiAction, uint uiParam, void* pvParam, uint fWinIni);
     }
 }

src/libraries/Microsoft.Diagnostics.Tracing.EventSource.Redist/src/Microsoft/Diagnostics/Tracing/StubEnvironment.cs

@@ -65,10 +65,10 @@ internal static partial class Interop
     [SuppressUnmanagedCodeSecurityAttribute]
     internal static partial class Kernel32
     {
-        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
-        internal static extern int GetCurrentThreadId();
+        [GeneratedDllImport(nameof(Kernel32))]
+        internal static partial int GetCurrentThreadId();
 
-        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
-        internal static extern uint GetCurrentProcessId();
+        [GeneratedDllImport(nameof(Kernel32))]
+        internal static partial uint GetCurrentProcessId();
     }
 }

src/libraries/Microsoft.Extensions.Hosting.Systemd/src/Microsoft.Extensions.Hosting.Systemd.csproj

@@ -6,6 +6,7 @@
     <PackageDescription>.NET hosting infrastructure for Systemd Services.</PackageDescription>
     <!-- Use targeting pack references instead of granular ones in the project file. -->
     <DisableImplicitAssemblyReferences>false</DisableImplicitAssemblyReferences>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
 
   <ItemGroup Condition="!$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net6.0'))">
@@ -20,4 +21,7 @@
     <ProjectReference Include="$(LibrariesProjectRoot)Microsoft.Extensions.Hosting\src\Microsoft.Extensions.Hosting.csproj" />
   </ItemGroup>
 
+  <ItemGroup Condition="'$(TargetFramework)' == '$(NetCoreAppCurrent)'">
+    <Reference Include="System.Runtime.InteropServices" />
+  </ItemGroup>
 </Project>

src/libraries/Microsoft.Extensions.Hosting.Systemd/src/SystemdHelpers.cs

@@ -12,7 +12,7 @@ namespace Microsoft.Extensions.Hosting.Systemd
     /// <summary>
     /// Helper methods for systemd Services.
     /// </summary>
-    public static class SystemdHelpers
+    public static partial class SystemdHelpers
     {
         private static bool? _isSystemdService;
 
@@ -46,7 +46,7 @@ private static bool CheckParentIsSystemd()
             return false;
         }
 
-        [DllImport("libc", EntryPoint = "getppid")]
-        private static extern int GetParentPid();
+        [GeneratedDllImport("libc", EntryPoint = "getppid")]
+        private static partial int GetParentPid();
     }
 }

src/libraries/System.Runtime.Extensions/tests/System.Runtime.Extensions.Tests.csproj

@@ -4,6 +4,7 @@
     <DefineConstants Condition="'$(TargetsUnix)' == 'true' or '$(TargetsBrowser)' == 'true'">$(DefineConstants);Unix</DefineConstants>
     <TestRuntime>true</TestRuntime>
     <IncludeRemoteExecutor>true</IncludeRemoteExecutor>
+    <EnableDllImportGenerator>true</EnableDllImportGenerator>
     <TargetFrameworks>$(NetCoreAppCurrent)-windows;$(NetCoreAppCurrent)-Unix;$(NetCoreAppCurrent)-Browser</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>