Bump dotnet and fix platform compat issues

Author: captainsafia

global.json

@@ -3,7 +3,7 @@
     "version": "6.0.100-alpha.1.21063.4"
   },
   "tools": {
-    "dotnet": "6.0.100-alpha.1.20523.3",
+    "dotnet": "6.0.100-alpha.1.21063.4",
     "runtimes": {
       "dotnet/x64": [
         "2.1.23",

src/DataProtection/DataProtection/src/DataProtectionServiceCollectionExtensions.cs

@@ -2,6 +2,9 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
 using Microsoft.AspNetCore.Cryptography.Cng;
 using Microsoft.AspNetCore.DataProtection;
 using Microsoft.AspNetCore.DataProtection.Infrastructure;
@@ -67,6 +70,8 @@ private static void AddDataProtectionServices(IServiceCollection services)
         {
             if (OSVersionUtil.IsWindows())
             {
+                // Assertion for platform compat analyzer
+                Debug.Assert(RuntimeInformation.IsOSPlatform(OSPlatform.Windows));
                 services.TryAddSingleton<IRegistryPolicyResolver, RegistryPolicyResolver>();
             }
 

src/DataProtection/DataProtection/src/EphemeralDataProtectionProvider.cs

@@ -4,6 +4,7 @@
 using System;
 using System.Diagnostics;
 using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
 using Microsoft.AspNetCore.Cryptography.Cng;
 using Microsoft.AspNetCore.DataProtection.AuthenticatedEncryption;
 using Microsoft.AspNetCore.DataProtection.AuthenticatedEncryption.ConfigurationModel;
@@ -47,6 +48,8 @@ public EphemeralDataProtectionProvider(ILoggerFactory loggerFactory)
             IKeyRingProvider keyringProvider;
             if (OSVersionUtil.IsWindows())
             {
+                // Assertion for platform compat analyzer
+                Debug.Assert(RuntimeInformation.IsOSPlatform(OSPlatform.Windows));
                 // Fastest implementation: AES-256-GCM [CNG]
                 keyringProvider = new EphemeralKeyRing<CngGcmAuthenticatedEncryptorConfiguration>(loggerFactory);
             }

src/DataProtection/DataProtection/src/KeyManagement/XmlKeyManager.cs

@@ -8,6 +8,7 @@
 using System.Linq;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
 using System.Threading;
 using System.Xml;
 using System.Xml.Linq;

src/DataProtection/DataProtection/src/LoggingExtensions.cs

@@ -4,6 +4,8 @@
 using System;
 using System.Diagnostics.CodeAnalysis;
 using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
 using System.Xml.Linq;
 using Microsoft.AspNetCore.DataProtection;
 using Microsoft.Win32;
@@ -95,7 +97,7 @@ internal static class LoggingExtensions
 
         private static Action<ILogger, string, Exception?> _writingDataToFile;
 
-        private static Action<ILogger, RegistryKey, string, Exception?> _readingDataFromRegistryKeyValue;
+        private static Action<ILogger, RegistryKey, string, Exception?>? _readingDataFromRegistryKeyValue;
 
         private static Action<ILogger, string, string, Exception?> _nameIsNotSafeRegistryValueName;
 
@@ -305,10 +307,15 @@ static LoggingExtensions()
                 eventId: new EventId(39, "WritingDataToFile"),
                 logLevel: LogLevel.Information,
                 formatString: "Writing data to file '{FileName}'.");
-            _readingDataFromRegistryKeyValue = LoggerMessage.Define<RegistryKey, string>(
-                eventId: new EventId(40, "ReadingDataFromRegistryKeyValue"),
-                logLevel: LogLevel.Debug,
-                formatString: "Reading data from registry key '{RegistryKeyName}', value '{Value}'.");
+
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                _readingDataFromRegistryKeyValue = LoggerMessage.Define<RegistryKey, string>(
+                    eventId: new EventId(40, "ReadingDataFromRegistryKeyValue"),
+                    logLevel: LogLevel.Debug,
+                    formatString: "Reading data from registry key '{RegistryKeyName}', value '{Value}'.");
+            }
+
             _nameIsNotSafeRegistryValueName = LoggerMessage.Define<string, string>(
                 eventId: new EventId(41, "NameIsNotSafeRegistryValueName"),
                 logLevel: LogLevel.Debug,
@@ -662,9 +669,13 @@ public static void WritingDataToFile(this ILogger logger, string finalFilename)
             _writingDataToFile(logger, finalFilename, null);
         }
 
+        [SupportedOSPlatform("windows")]
         public static void ReadingDataFromRegistryKeyValue(this ILogger logger, RegistryKey regKey, string valueName)
         {
-            _readingDataFromRegistryKeyValue(logger, regKey, valueName, null);
+            if (_readingDataFromRegistryKeyValue != null)
+            {
+                _readingDataFromRegistryKeyValue(logger, regKey, valueName, null);
+            }
         }
 
         public static void NameIsNotSafeRegistryValueName(this ILogger logger, string friendlyName, string newFriendlyName)