Avalonia: Fix dialog issues caused by 1.1.1105 (#6211)

* Set _contentDialogOverlayWindow to null

* Make CheckLaunchState async

.editorconfig

@@ -17,8 +17,8 @@ tab_width = 4
 end_of_line = lf
 insert_final_newline = true
 
-# JSON files
-[*.json]
+# Markdown, JSON, YAML, props and csproj files
+[*.{md,json,yml,props,csproj}]
 
 # Indentation and spacing
 indent_size = 2

.github/workflows/build.yml

@@ -40,7 +40,7 @@ jobs:
       - uses: actions/setup-dotnet@v4
         with:
           global-json-file: global.json
-          
+
       - name: Overwrite csc problem matcher
         run: echo "::add-matcher::.github/csc.json"
 
@@ -49,6 +49,16 @@ jobs:
         run: echo "result=$(git rev-parse --short "${{ github.sha }}")" >> $GITHUB_OUTPUT
         shell: bash
 
+      - name: Change config filename
+        run: sed -r --in-place 's/\%\%RYUJINX_CONFIG_FILE_NAME\%\%/PRConfig\.json/g;' src/Ryujinx.Common/ReleaseInformation.cs
+        shell: bash
+        if: github.event_name == 'pull_request' && matrix.os != 'macOS-latest'
+
+      - name: Change config filename for macOS
+        run: sed -r -i '' 's/\%\%RYUJINX_CONFIG_FILE_NAME\%\%/PRConfig\.json/g;' src/Ryujinx.Common/ReleaseInformation.cs
+        shell: bash
+        if: github.event_name == 'pull_request' && matrix.os == 'macOS-latest'
+
       - name: Build
         run: dotnet build -c "${{ matrix.configuration }}" -p:Version="${{ env.RYUJINX_BASE_VERSION }}" -p:SourceRevisionId="${{ steps.git_short_hash.outputs.result }}" -p:ExtraDefineConstants=DISABLE_UPDATER
 
@@ -135,6 +145,11 @@ jobs:
         id: git_short_hash
         run: echo "result=$(git rev-parse --short "${{ github.sha }}")" >> $GITHUB_OUTPUT
 
+      - name: Change config filename
+        run: sed -r --in-place 's/\%\%RYUJINX_CONFIG_FILE_NAME\%\%/PRConfig\.json/g;' src/Ryujinx.Common/ReleaseInformation.cs
+        shell: bash
+        if: github.event_name == 'pull_request'
+
       - name: Publish macOS Ryujinx.Ava
         run: |
           ./distribution/macos/create_macos_build_ava.sh . publish_tmp_ava publish_ava ./distribution/macos/entitlements.xml "${{ env.RYUJINX_BASE_VERSION }}" "${{ steps.git_short_hash.outputs.result }}" "${{ matrix.configuration }}" "-p:ExtraDefineConstants=DISABLE_UPDATER"

.github/workflows/checks.yml

@@ -8,7 +8,7 @@ on:
       - '!.github/**'
       - '!*.yml'
       - '!*.config'
-      - '!README.md'
+      - '!*.md'
       - '.github/workflows/*.yml'
 
 permissions:

.github/workflows/mako.yml

@@ -0,0 +1,41 @@
+name: Mako
+on:
+  discussion:
+    types: [created, edited, answered, unanswered, category_changed]
+  discussion_comment:
+    types: [created, edited]
+  gollum:
+  issue_comment:
+    types: [created, edited]
+  issues:
+    types: [opened, edited, reopened, pinned, milestoned, demilestoned, assigned, unassigned, labeled, unlabeled]
+  pull_request_target:
+    types: [opened, edited, reopened, synchronize, ready_for_review, assigned, unassigned]
+
+jobs:
+  tasks:
+    name: Run Ryujinx tasks
+    permissions:
+      actions: read
+      contents: read
+      discussions: write
+      issues: write
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        if: github.event_name == 'pull_request_target'
+        with:
+          # Ensure we pin the source origin as pull_request_target run under forks.
+          fetch-depth: 0
+          repository: Ryujinx/Ryujinx
+          ref: master
+
+      - name: Run Mako command
+        uses: Ryujinx/Ryujinx-Mako@master
+        with:
+          command: exec-ryujinx-tasks
+          args: --event-name "${{ github.event_name }}" --event-path "${{ github.event_path }}" -w "${{ github.workspace }}" "${{ github.repository }}" "${{ github.run_id }}"
+          app_id: ${{ secrets.MAKO_APP_ID }}
+          private_key: ${{ secrets.MAKO_PRIVATE_KEY }}
+          installation_id: ${{ secrets.MAKO_INSTALLATION_ID }}

.github/workflows/pr_triage.yml

@@ -21,27 +21,8 @@ jobs:
            repository: Ryujinx/Ryujinx
            ref: master
 
-      - name: Checkout Ryujinx-Mako
-        uses: actions/checkout@v4
-        with:
-            repository: Ryujinx/Ryujinx-Mako
-            ref: master
-            path: '.ryujinx-mako'
-
-      - name: Setup Ryujinx-Mako
-        uses: ./.ryujinx-mako/.github/actions/setup-mako
-
       - name: Update labels based on changes
         uses: actions/labeler@v5
         with:
           sync-labels: true
           dot: true
-
-      - name: Assign reviewers
-        run: |
-            poetry -n -C .ryujinx-mako run ryujinx-mako update-reviewers ${{ github.repository }} ${{ github.event.pull_request.number }} .github/reviewers.yml
-        shell: bash
-        env:
-            MAKO_APP_ID: ${{ secrets.MAKO_APP_ID }}
-            MAKO_PRIVATE_KEY: ${{ secrets.MAKO_PRIVATE_KEY }}
-            MAKO_INSTALLATION_ID: ${{ secrets.MAKO_INSTALLATION_ID }}

.github/workflows/release.yml

@@ -10,7 +10,7 @@ on:
       - '*.yml'
       - '*.json'
       - '*.config'
-      - 'README.md'
+      - '*.md'
 
 concurrency: release
 
@@ -85,6 +85,7 @@ jobs:
           sed -r --in-place 's/\%\%RYUJINX_TARGET_RELEASE_CHANNEL_NAME\%\%/${{ env.RYUJINX_TARGET_RELEASE_CHANNEL_NAME }}/g;' src/Ryujinx.Common/ReleaseInformation.cs
           sed -r --in-place 's/\%\%RYUJINX_TARGET_RELEASE_CHANNEL_OWNER\%\%/${{ env.RYUJINX_TARGET_RELEASE_CHANNEL_OWNER }}/g;' src/Ryujinx.Common/ReleaseInformation.cs
           sed -r --in-place 's/\%\%RYUJINX_TARGET_RELEASE_CHANNEL_REPO\%\%/${{ env.RYUJINX_TARGET_RELEASE_CHANNEL_REPO }}/g;' src/Ryujinx.Common/ReleaseInformation.cs
+          sed -r --in-place 's/\%\%RYUJINX_CONFIG_FILE_NAME\%\%/Config\.json/g;' src/Ryujinx.Common/ReleaseInformation.cs
         shell: bash
 
       - name: Create output dir
@@ -186,6 +187,7 @@ jobs:
           sed -r --in-place 's/\%\%RYUJINX_TARGET_RELEASE_CHANNEL_NAME\%\%/${{ env.RYUJINX_TARGET_RELEASE_CHANNEL_NAME }}/g;' src/Ryujinx.Common/ReleaseInformation.cs
           sed -r --in-place 's/\%\%RYUJINX_TARGET_RELEASE_CHANNEL_OWNER\%\%/${{ env.RYUJINX_TARGET_RELEASE_CHANNEL_OWNER }}/g;' src/Ryujinx.Common/ReleaseInformation.cs
           sed -r --in-place 's/\%\%RYUJINX_TARGET_RELEASE_CHANNEL_REPO\%\%/${{ env.RYUJINX_TARGET_RELEASE_CHANNEL_REPO }}/g;' src/Ryujinx.Common/ReleaseInformation.cs
+          sed -r --in-place 's/\%\%RYUJINX_CONFIG_FILE_NAME\%\%/Config\.json/g;' src/Ryujinx.Common/ReleaseInformation.cs
         shell: bash
 
       - name: Publish macOS Ryujinx.Ava

Directory.Packages.props

@@ -25,7 +25,7 @@
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
     <PackageVersion Include="Microsoft.IO.RecyclableMemoryStream" Version="3.0.0" />
     <PackageVersion Include="MsgPack.Cli" Version="1.0.1" />
-    <PackageVersion Include="NetCoreServer" Version="7.0.0" />
+    <PackageVersion Include="NetCoreServer" Version="8.0.7" />
     <PackageVersion Include="NUnit" Version="3.13.3" />
     <PackageVersion Include="NUnit3TestAdapter" Version="4.1.0" />
     <PackageVersion Include="OpenTK.Core" Version="4.8.2" />

README.md

@@ -1,21 +1,21 @@
-
 <h1 align="center">
   <br>
-  <a href="https://ryujinx.org/"><img src="https://i.imgur.com/WcCj6Rt.png" alt="Ryujinx" width="150"></a>
+  <a href="https://ryujinx.org/"><img src="https://raw.githubusercontent.com/Ryujinx/Ryujinx/master/distribution/misc/Logo.svg" alt="Ryujinx" width="150"></a>
   <br>
   <b>Ryujinx</b>
   <br>
   <sub><sup><b>(REE-YOU-JINX)</b></sup></sub>
   <br>
-
 </h1>
 
 <p align="center">
-       Ryujinx is an open-source Nintendo Switch emulator, created by gdkchan, written in C#.
-       This emulator aims at providing excellent accuracy and performance, a user-friendly interface and consistent builds.
-    It was written from scratch and development on the project began in September 2017. Ryujinx is available on Github under the <a href="https://github.com/Ryujinx/Ryujinx/blob/master/LICENSE.txt" target="_blank">MIT license</a>. <br />
-
+  Ryujinx is an open-source Nintendo Switch emulator, created by gdkchan, written in C#.
+  This emulator aims at providing excellent accuracy and performance, a user-friendly interface and consistent builds.
+  It was written from scratch and development on the project began in September 2017.
+  Ryujinx is available on Github under the <a href="https://github.com/Ryujinx/Ryujinx/blob/master/LICENSE.txt" target="_blank">MIT license</a>.
+  <br />
 </p>
+
 <p align="center">
     <a href="https://github.com/Ryujinx/Ryujinx/actions/workflows/release.yml">
         <img src="https://github.com/Ryujinx/Ryujinx/actions/workflows/release.yml/badge.svg"
@@ -34,87 +34,111 @@
     <img src="https://raw.githubusercontent.com/Ryujinx/Ryujinx-Website/master/public/assets/images/shell.png">
 </p>
 
-<h5 align="center">
-
-</h5>
-
 ## Compatibility
 
-As of April 2023, Ryujinx has been tested on approximately 4,050 titles; over 4,000 boot past menus and into gameplay, with roughly 3,400 of those being considered playable.
-You can check out the compatibility list [here](https://github.com/Ryujinx/Ryujinx-Games-List/issues). Anyone is free to submit a new game test or update an existing game test entry; simply follow the new issue template and testing guidelines, or post as a reply to the applicable game issue. Use the search function to see if a game has been tested already!
+As of October 2023, Ryujinx has been tested on approximately 4,200 titles;
+over 4,150 boot past menus and into gameplay, with roughly 3,500 of those being considered playable.
+
+You can check out the compatibility list [here](https://github.com/Ryujinx/Ryujinx-Games-List/issues).
+
+Anyone is free to submit a new game test or update an existing game test entry;
+simply follow the new issue template and testing guidelines, or post as a reply to the applicable game issue.
+Use the search function to see if a game has been tested already!
 
 ## Usage
 
-To run this emulator, your PC must be equipped with at least 8GiB of RAM; failing to meet this requirement may result in a poor gameplay experience or unexpected crashes.
+To run this emulator, your PC must be equipped with at least 8GiB of RAM;
+failing to meet this requirement may result in a poor gameplay experience or unexpected crashes.
 
 See our [Setup & Configuration Guide](https://github.com/Ryujinx/Ryujinx/wiki/Ryujinx-Setup-&-Configuration-Guide) on how to set up the emulator.
 
-For our Local Wireless and LAN builds, see our [Multiplayer: Local Play/Local Wireless Guide
+For our Local Wireless (LDN) builds, see our [Multiplayer: Local Play/Local Wireless Guide
 ](https://github.com/Ryujinx/Ryujinx/wiki/Multiplayer-(LDN-Local-Wireless)-Guide).
 
 Avalonia UI comes with translations for various languages. See [Crowdin](https://crwd.in/ryujinx) for more information.
 
 ## Latest build
 
-These builds are compiled automatically for each commit on the master branch. While we strive to ensure optimal stability and performance prior to pushing an update, our automated builds **may be unstable or completely broken.**
+These builds are compiled automatically for each commit on the master branch.
+While we strive to ensure optimal stability and performance prior to pushing an update, our automated builds **may be unstable or completely broken**.
 
 If you want to see details on updates to the emulator, you can visit our [Changelog](https://github.com/Ryujinx/Ryujinx/wiki/Changelog).
 
 The latest automatic build for Windows, macOS, and Linux can be found on the [Official Website](https://ryujinx.org/download).
 
+## Documentation
+
+If you are planning to contribute or just want to learn more about this project please read through our [documentation](docs/README.md).
 
 ## Building
 
 If you wish to build the emulator yourself, follow these steps:
 
 ### Step 1
-Install the X64 version of [.NET 8.0 (or higher) SDK](https://dotnet.microsoft.com/download/dotnet/8.0).
+
+Install the [.NET 8.0 (or higher) SDK](https://dotnet.microsoft.com/download/dotnet/8.0).
+Make sure your SDK version is higher or equal to the required version specified in [global.json](global.json). 
 
 ### Step 2
+
 Either use `git clone https://github.com/Ryujinx/Ryujinx` on the command line to clone the repository or use Code --> Download zip button to get the files.
 
 ### Step 3
 
-To build Ryujinx, open a command prompt inside the project directory. You can quickly access it on Windows by holding shift in File Explorer, then right clicking and selecting `Open command window here`. Then type the following command:
-`dotnet build -c Release -o build`
+To build Ryujinx, open a command prompt inside the project directory.
+You can quickly access it on Windows by holding shift in File Explorer, then right clicking and selecting `Open command window here`.
+Then type the following command: `dotnet build -c Release -o build`
 the built files will be found in the newly created build directory.
 
-Ryujinx system files are stored in the `Ryujinx` folder. This folder is located in the user folder, which can be accessed by clicking `Open Ryujinx Folder` under the File menu in the GUI.
-
+Ryujinx system files are stored in the `Ryujinx` folder.
+This folder is located in the user folder, which can be accessed by clicking `Open Ryujinx Folder` under the File menu in the GUI.
 
 ## Features
 
- - **Audio**
+- **Audio**
 
-   Audio output is entirely supported, audio input (microphone) isn't supported. We use C# wrappers for [OpenAL](https://openal-soft.org/), and [SDL2](https://www.libsdl.org/) & [libsoundio](http://libsound.io/) as fallbacks.
+  Audio output is entirely supported, audio input (microphone) isn't supported.
+  We use C# wrappers for [OpenAL](https://openal-soft.org/), and [SDL2](https://www.libsdl.org/) & [libsoundio](http://libsound.io/) as fallbacks.
 
 - **CPU**
 
-  The CPU emulator, ARMeilleure, emulates an ARMv8 CPU and currently has support for most 64-bit ARMv8 and some of the ARMv7 (and older) instructions, including partial 32-bit support. It translates the ARM code to a custom IR, performs a few optimizations, and turns that into x86 code.
-  There are three memory manager options available depending on the user's preference, leveraging both software-based (slower) and host-mapped modes (much faster). The fastest option (host, unchecked) is set by default.
-  Ryujinx also features an optional Profiled Persistent Translation Cache, which essentially caches translated functions so that they do not need to be translated every time the game loads. The net result is a significant reduction in load times (the amount of time between launching a game and arriving at the title screen) for nearly every game. NOTE: this feature is enabled by default in the Options menu > System tab. You must launch the game at least twice to the title screen or beyond before performance improvements are unlocked on the third launch! These improvements are permanent and do not require any extra launches going forward.
+  The CPU emulator, ARMeilleure, emulates an ARMv8 CPU and currently has support for most 64-bit ARMv8 and some of the ARMv7 (and older) instructions, including partial 32-bit support.
+  It translates the ARM code to a custom IR, performs a few optimizations, and turns that into x86 code.
+  There are three memory manager options available depending on the user's preference, leveraging both software-based (slower) and host-mapped modes (much faster).
+  The fastest option (host, unchecked) is set by default.
+  Ryujinx also features an optional Profiled Persistent Translation Cache, which essentially caches translated functions so that they do not need to be translated every time the game loads. 
+  The net result is a significant reduction in load times (the amount of time between launching a game and arriving at the title screen) for nearly every game.
+  NOTE: This feature is enabled by default in the Options menu > System tab.
+  You must launch the game at least twice to the title screen or beyond before performance improvements are unlocked on the third launch!
+  These improvements are permanent and do not require any extra launches going forward.
 
 - **GPU**
 
-  The GPU emulator emulates the Switch's Maxwell GPU using either the OpenGL (version 4.5 minimum), Vulkan, or Metal (via MoltenVK) APIs through a custom build of OpenTK or Silk.NET respectively. There are currently six graphics enhancements available to the end user in Ryujinx: Disk Shader Caching, Resolution Scaling, Anti-Aliasing, Scaling Filters (including FSR), Anisotropic Filtering and Aspect Ratio Adjustment. These enhancements can be adjusted or toggled as desired in the GUI.
+  The GPU emulator emulates the Switch's Maxwell GPU using either the OpenGL (version 4.5 minimum), Vulkan, or Metal (via MoltenVK) APIs through a custom build of OpenTK or Silk.NET respectively.
+  There are currently six graphics enhancements available to the end user in Ryujinx: Disk Shader Caching, Resolution Scaling, Anti-Aliasing, Scaling Filters (including FSR), Anisotropic Filtering and Aspect Ratio Adjustment.
+  These enhancements can be adjusted or toggled as desired in the GUI.
 
 - **Input**
 
-   We currently have support for keyboard, mouse, touch input, JoyCon input support, and nearly all controllers. Motion controls are natively supported in most cases; for dual-JoyCon motion support, DS4Windows or BetterJoy are currently required.
-   In all scenarios, you can set up everything inside the input configuration menu.
+  We currently have support for keyboard, mouse, touch input, JoyCon input support, and nearly all controllers.
+  Motion controls are natively supported in most cases; for dual-JoyCon motion support, DS4Windows or BetterJoy are currently required.
+  In all scenarios, you can set up everything inside the input configuration menu.
 
 - **DLC & Modifications**
 
-   Ryujinx is able to manage add-on content/downloadable content through the GUI. Mods (romfs, exefs, and runtime mods such as cheats) are also supported; the GUI contains a shortcut to open the respective mods folder for a particular game.
+  Ryujinx is able to manage add-on content/downloadable content through the GUI.
+  Mods (romfs, exefs, and runtime mods such as cheats) are also supported;
+  the GUI contains a shortcut to open the respective mods folder for a particular game.
 
 - **Configuration**
 
-   The emulator has settings for enabling or disabling some logging, remapping controllers, and more. You can configure all of them through the graphical interface or manually through the config file, `Config.json`, found in the user folder which can be accessed by clicking `Open Ryujinx Folder` under the File menu in the GUI.
-
+  The emulator has settings for enabling or disabling some logging, remapping controllers, and more.
+  You can configure all of them through the graphical interface or manually through the config file, `Config.json`, found in the user folder which can be accessed by clicking `Open Ryujinx Folder` under the File menu in the GUI.
 
 ## Contact
 
-If you have contributions, suggestions, need emulator support or just want to get in touch with the team, join our [Discord server](https://discord.com/invite/Ryujinx). You may also review our [FAQ](https://github.com/Ryujinx/Ryujinx/wiki/Frequently-Asked-Questions).
+If you have contributions, suggestions, need emulator support or just want to get in touch with the team, join our [Discord server](https://discord.com/invite/Ryujinx).
+You may also review our [FAQ](https://github.com/Ryujinx/Ryujinx/wiki/Frequently-Asked-Questions).
 
 ## Donations
 
@@ -134,9 +158,10 @@ All funds received through Patreon are considered a donation to support the proj
 
 ## License
 
-This software is licensed under the terms of the <a href="https://github.com/Ryujinx/Ryujinx/blob/master/LICENSE.txt" target="_blank">MIT license.</a></i><br />
+This software is licensed under the terms of the [MIT license](LICENSE.txt).
 This project makes use of code authored by the libvpx project, licensed under BSD and the ffmpeg project, licensed under LGPLv3.
 See [LICENSE.txt](LICENSE.txt) and [THIRDPARTY.md](distribution/legal/THIRDPARTY.md) for more details.
+
 ## Credits
 
 - [LibHac](https://github.com/Thealexbarney/LibHac) is used for our file-system.

distribution/linux/Ryujinx.desktop

@@ -4,7 +4,7 @@ Name=Ryujinx
 Type=Application
 Icon=Ryujinx
 Exec=Ryujinx.sh %f
-Comment=Plays Nintendo Switch applications
+Comment=A Nintendo Switch Emulator
 GenericName=Nintendo Switch Emulator
 Terminal=false
 Categories=Game;Emulator;

distribution/linux/Ryujinx.sh

@@ -17,4 +17,4 @@ if command -v gamemoderun > /dev/null 2>&1; then
     COMMAND="$COMMAND gamemoderun"
 fi
 
-$COMMAND "$SCRIPT_DIR/$RYUJINX_BIN" "$@"
+$COMMAND "$SCRIPT_DIR/$RYUJINX_BIN" "$@"

src/Ryujinx.Ava/Modules/Updater/Updater.cs

@@ -665,7 +665,7 @@ namespace Ryujinx.Modules
                 return false;
             }
 
-            if (Program.Version.Contains("dirty") || !ReleaseInformation.IsValid())
+            if (Program.Version.Contains("dirty") || !ReleaseInformation.IsValid)
             {
                 if (showWarnings)
                 {
@@ -683,7 +683,7 @@ namespace Ryujinx.Modules
 #else
             if (showWarnings)
             {
-                if (ReleaseInformation.IsFlatHubBuild())
+                if (ReleaseInformation.IsFlatHubBuild)
                 {
                     Dispatcher.UIThread.InvokeAsync(() =>
                         ContentDialogHelper.CreateWarningDialog(

src/Ryujinx.Ava/Program.cs

@@ -35,7 +35,7 @@ namespace Ryujinx.Ava
 
         public static void Main(string[] args)
         {
-            Version = ReleaseInformation.GetVersion();
+            Version = ReleaseInformation.Version;
 
             if (OperatingSystem.IsWindows() && !OperatingSystem.IsWindowsVersionAtLeast(10, 0, 17134))
             {
@@ -125,8 +125,8 @@ namespace Ryujinx.Ava
 
         public static void ReloadConfig()
         {
-            string localConfigurationPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Config.json");
-            string appDataConfigurationPath = Path.Combine(AppDataManager.BaseDirPath, "Config.json");
+            string localConfigurationPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, ReleaseInformation.ConfigName);
+            string appDataConfigurationPath = Path.Combine(AppDataManager.BaseDirPath, ReleaseInformation.ConfigName);
 
             // Now load the configuration as the other subsystems are now registered
             if (File.Exists(localConfigurationPath))

src/Ryujinx.Ava/UI/Helpers/ContentDialogHelper.cs

@@ -388,6 +388,7 @@ namespace Ryujinx.Ava.UI.Helpers
             {
                 _contentDialogOverlayWindow.Content = null;
                 _contentDialogOverlayWindow.Close();
+                _contentDialogOverlayWindow = null;
             }
 
             return result;

src/Ryujinx.Ava/UI/ViewModels/MainWindowViewModel.cs

@@ -357,7 +357,7 @@ namespace Ryujinx.Ava.UI.ViewModels
 
         public bool OpenBcatSaveDirectoryEnabled => !SelectedApplication.ControlHolder.ByteSpan.IsZeros() && SelectedApplication.ControlHolder.Value.BcatDeliveryCacheStorageSize > 0;
 
-        public bool CreateShortcutEnabled => !ReleaseInformation.IsFlatHubBuild();
+        public bool CreateShortcutEnabled => !ReleaseInformation.IsFlatHubBuild;
 
         public string LoadHeading
         {
@@ -1350,7 +1350,12 @@ namespace Ryujinx.Ava.UI.ViewModels
 
         public void OpenLogsFolder()
         {
-            string logPath = Path.Combine(ReleaseInformation.GetBaseApplicationDirectory(), "Logs");
+            string logPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Logs");
+
+            if (ReleaseInformation.IsValid)
+            {
+                logPath = Path.Combine(AppDataManager.BaseDirPath, "Logs");
+            }
 
             new DirectoryInfo(logPath).Create();
 

src/Ryujinx.Ava/UI/Windows/MainWindow.axaml.cs

@@ -263,7 +263,7 @@ namespace Ryujinx.Ava.UI.Windows
             }
         }
 
-        private void CheckLaunchState()
+        private async Task CheckLaunchState()
         {
             if (OperatingSystem.IsLinux() && LinuxHelper.VmMaxMapCount < LinuxHelper.RecommendedVmMaxMapCount)
             {
@@ -271,23 +271,11 @@ namespace Ryujinx.Ava.UI.Windows
 
                 if (LinuxHelper.PkExecPath is not null)
                 {
-                    Dispatcher.UIThread.Post(async () =>
-                    {
-                        if (OperatingSystem.IsLinux())
-                        {
-                            await ShowVmMaxMapCountDialog();
-                        }
-                    });
+                    await Dispatcher.UIThread.InvokeAsync(ShowVmMaxMapCountDialog);
                 }
                 else
                 {
-                    Dispatcher.UIThread.Post(async () =>
-                    {
-                        if (OperatingSystem.IsLinux())
-                        {
-                            await ShowVmMaxMapCountWarning();
-                        }
-                    });
+                    await Dispatcher.UIThread.InvokeAsync(ShowVmMaxMapCountWarning);
                 }
             }
 
@@ -304,12 +292,12 @@ namespace Ryujinx.Ava.UI.Windows
             {
                 ShowKeyErrorOnLoad = false;
 
-                Dispatcher.UIThread.Post(async () => await UserErrorDialog.ShowUserErrorDialog(UserError.NoKeys));
+                await Dispatcher.UIThread.InvokeAsync(async () => await UserErrorDialog.ShowUserErrorDialog(UserError.NoKeys));
             }
 
             if (ConfigurationState.Instance.CheckUpdatesOnStart.Value && Updater.CanUpdate(false))
             {
-                Updater.BeginParse(this, false).ContinueWith(task =>
+                await Updater.BeginParse(this, false).ContinueWith(task =>
                 {
                     Logger.Error?.Print(LogClass.Application, $"Updater Error: {task.Exception}");
                 }, TaskContinuationOptions.OnlyOnFaulted);
@@ -404,7 +392,9 @@ namespace Ryujinx.Ava.UI.Windows
 
             LoadApplications();
 
+#pragma warning disable CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
             CheckLaunchState();
+#pragma warning restore CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
         }
 
         private void SetMainContent(Control content = null)

src/Ryujinx.Common/Configuration/AppDataManager.cs

@@ -1,4 +1,5 @@
 using Ryujinx.Common.Logging;
+using Ryujinx.Common.Utilities;
 using System;
 using System.IO;
 
@@ -6,8 +7,8 @@ namespace Ryujinx.Common.Configuration
 {
     public static class AppDataManager
     {
-        public const string DefaultBaseDir = "Ryujinx";
-        public const string DefaultPortableDir = "portable";
+        private const string DefaultBaseDir = "Ryujinx";
+        private const string DefaultPortableDir = "portable";
 
         // The following 3 are always part of Base Directory
         private const string GamesDir = "games";
@@ -109,8 +110,7 @@ namespace Ryujinx.Common.Configuration
                 string oldConfigPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), DefaultBaseDir);
                 if (Path.Exists(oldConfigPath) && !IsPathSymlink(oldConfigPath) && !Path.Exists(BaseDirPath))
                 {
-                    CopyDirectory(oldConfigPath, BaseDirPath);
-                    Directory.Delete(oldConfigPath, true);
+                    FileSystemUtils.MoveDirectory(oldConfigPath, BaseDirPath);
                     Directory.CreateSymbolicLink(oldConfigPath, BaseDirPath);
                 }
             }
@@ -127,41 +127,13 @@ namespace Ryujinx.Common.Configuration
         }
 
         // Check if existing old baseDirPath is a symlink, to prevent possible errors.
-        // Should be removed, when the existance of the old directory isn't checked anymore.
+        // Should be removed, when the existence of the old directory isn't checked anymore.
         private static bool IsPathSymlink(string path)
         {
             FileAttributes attributes = File.GetAttributes(path);
             return (attributes & FileAttributes.ReparsePoint) == FileAttributes.ReparsePoint;
         }
 
-        private static void CopyDirectory(string sourceDir, string destinationDir)
-        {
-            var dir = new DirectoryInfo(sourceDir);
-
-            if (!dir.Exists)
-            {
-                throw new DirectoryNotFoundException($"Source directory not found: {dir.FullName}");
-            }
-
-            DirectoryInfo[] subDirs = dir.GetDirectories();
-            Directory.CreateDirectory(destinationDir);
-
-            foreach (FileInfo file in dir.GetFiles())
-            {
-                if (file.Name == ".DS_Store")
-                {
-                    continue;
-                }
-
-                file.CopyTo(Path.Combine(destinationDir, file.Name));
-            }
-
-            foreach (DirectoryInfo subDir in subDirs)
-            {
-                CopyDirectory(subDir.FullName, Path.Combine(destinationDir, subDir.Name));
-            }
-        }
-
         public static string GetModsPath() => CustomModsPath ?? Directory.CreateDirectory(Path.Combine(BaseDirPath, DefaultModsDir)).FullName;
         public static string GetSdModsPath() => CustomSdModsPath ?? Directory.CreateDirectory(Path.Combine(BaseDirPath, DefaultSdcardDir, "atmosphere")).FullName;
     }

src/Ryujinx.Common/Logging/Targets/FileLogTarget.cs

@@ -13,31 +13,71 @@ namespace Ryujinx.Common.Logging.Targets
 
         string ILogTarget.Name { get => _name; }
 
-        public FileLogTarget(string path, string name)
-            : this(path, name, FileShare.Read, FileMode.Append)
-        { }
+        public FileLogTarget(string name, FileStream fileStream)
+        {
+            _name = name;
+            _logWriter = new StreamWriter(fileStream);
+            _formatter = new DefaultLogFormatter();
+        }
 
-        public FileLogTarget(string path, string name, FileShare fileShare, FileMode fileMode)
+        public static FileStream PrepareLogFile(string path)
         {
             // Ensure directory is present
             DirectoryInfo logDir = new(Path.Combine(path, "Logs"));
-            logDir.Create();
+            try
+            {
+                logDir.Create();
+            }
+            catch (IOException exception)
+            {
+                Logger.Warning?.Print(LogClass.Application, $"Logging directory could not be created '{logDir}': {exception}");
+
+                return null;
+            }
 
             // Clean up old logs, should only keep 3
             FileInfo[] files = logDir.GetFiles("*.log").OrderBy((info => info.CreationTime)).ToArray();
             for (int i = 0; i < files.Length - 2; i++)
             {
-                files[i].Delete();
+                try
+                {
+                    files[i].Delete();
+                }
+                catch (UnauthorizedAccessException exception)
+                {
+                    Logger.Warning?.Print(LogClass.Application, $"Old log file could not be deleted '{files[i].FullName}': {exception}");
+
+                    return null;
+                }
+                catch (IOException exception)
+                {
+                    Logger.Warning?.Print(LogClass.Application, $"Old log file could not be deleted '{files[i].FullName}': {exception}");
+
+                    return null;
+                }
             }
 
-            string version = ReleaseInformation.GetVersion();
+            string version = ReleaseInformation.Version;
 
             // Get path for the current time
             path = Path.Combine(logDir.FullName, $"Ryujinx_{version}_{DateTime.Now:yyyy-MM-dd_HH-mm-ss}.log");
 
-            _name = name;
-            _logWriter = new StreamWriter(File.Open(path, fileMode, FileAccess.Write, fileShare));
-            _formatter = new DefaultLogFormatter();
+            try
+            {
+                return File.Open(path, FileMode.Append, FileAccess.Write, FileShare.Read);
+            }
+            catch (UnauthorizedAccessException exception)
+            {
+                Logger.Warning?.Print(LogClass.Application, $"Log file could not be created '{path}': {exception}");
+
+                return null;
+            }
+            catch (IOException exception)
+            {
+                Logger.Warning?.Print(LogClass.Application, $"Log file could not be created '{path}': {exception}");
+
+                return null;
+            }
         }
 
         public void Log(object sender, LogEventArgs args)

src/Ryujinx.Common/ReleaseInformation.cs

@@ -1,5 +1,3 @@
-using Ryujinx.Common.Configuration;
-using System;
 using System.Reflection;
 
 namespace Ryujinx.Common
@@ -9,50 +7,25 @@ namespace Ryujinx.Common
     {
         private const string FlatHubChannelOwner = "flathub";
 
-        public const string BuildVersion = "%%RYUJINX_BUILD_VERSION%%";
-        public const string BuildGitHash = "%%RYUJINX_BUILD_GIT_HASH%%";
-        public const string ReleaseChannelName = "%%RYUJINX_TARGET_RELEASE_CHANNEL_NAME%%";
+        private const string BuildVersion = "%%RYUJINX_BUILD_VERSION%%";
+        private const string BuildGitHash = "%%RYUJINX_BUILD_GIT_HASH%%";
+        private const string ReleaseChannelName = "%%RYUJINX_TARGET_RELEASE_CHANNEL_NAME%%";
+        private const string ConfigFileName = "%%RYUJINX_CONFIG_FILE_NAME%%";
+
         public const string ReleaseChannelOwner = "%%RYUJINX_TARGET_RELEASE_CHANNEL_OWNER%%";
         public const string ReleaseChannelRepo = "%%RYUJINX_TARGET_RELEASE_CHANNEL_REPO%%";
 
-        public static bool IsValid()
-        {
-            return !BuildGitHash.StartsWith("%%") &&
-                   !ReleaseChannelName.StartsWith("%%") &&
-                   !ReleaseChannelOwner.StartsWith("%%") &&
-                   !ReleaseChannelRepo.StartsWith("%%");
-        }
+        public static string ConfigName => !ConfigFileName.StartsWith("%%") ? ConfigFileName : "Config.json";
 
-        public static bool IsFlatHubBuild()
-        {
-            return IsValid() && ReleaseChannelOwner.Equals(FlatHubChannelOwner);
-        }
+        public static bool IsValid =>
+            !BuildGitHash.StartsWith("%%") &&
+            !ReleaseChannelName.StartsWith("%%") &&
+            !ReleaseChannelOwner.StartsWith("%%") &&
+            !ReleaseChannelRepo.StartsWith("%%") &&
+            !ConfigFileName.StartsWith("%%");
 
-        public static string GetVersion()
-        {
-            if (IsValid())
-            {
-                return BuildVersion;
-            }
+        public static bool IsFlatHubBuild => IsValid && ReleaseChannelOwner.Equals(FlatHubChannelOwner);
 
-            return Assembly.GetEntryAssembly().GetCustomAttribute<AssemblyInformationalVersionAttribute>().InformationalVersion;
-        }
-
-#if FORCE_EXTERNAL_BASE_DIR
-        public static string GetBaseApplicationDirectory()
-        {
-            return AppDataManager.BaseDirPath;
-        }
-#else
-        public static string GetBaseApplicationDirectory()
-        {
-            if (IsFlatHubBuild() || OperatingSystem.IsMacOS())
-            {
-                return AppDataManager.BaseDirPath;
-            }
-
-            return AppDomain.CurrentDomain.BaseDirectory;
-        }
-#endif
+        public static string Version => IsValid ? BuildVersion : Assembly.GetEntryAssembly()!.GetCustomAttribute<AssemblyInformationalVersionAttribute>()?.InformationalVersion;
     }
 }

src/Ryujinx.Common/Utilities/FileSystemUtils.cs

@@ -0,0 +1,48 @@
+using System.IO;
+
+namespace Ryujinx.Common.Utilities
+{
+    public static class FileSystemUtils
+    {
+        public static void CopyDirectory(string sourceDir, string destinationDir, bool recursive)
+        {
+            // Get information about the source directory
+            var dir = new DirectoryInfo(sourceDir);
+
+            // Check if the source directory exists
+            if (!dir.Exists)
+            {
+                throw new DirectoryNotFoundException($"Source directory not found: {dir.FullName}");
+            }
+
+            // Cache directories before we start copying
+            DirectoryInfo[] dirs = dir.GetDirectories();
+
+            // Create the destination directory
+            Directory.CreateDirectory(destinationDir);
+
+            // Get the files in the source directory and copy to the destination directory
+            foreach (FileInfo file in dir.GetFiles())
+            {
+                string targetFilePath = Path.Combine(destinationDir, file.Name);
+                file.CopyTo(targetFilePath);
+            }
+
+            // If recursive and copying subdirectories, recursively call this method
+            if (recursive)
+            {
+                foreach (DirectoryInfo subDir in dirs)
+                {
+                    string newDestinationDir = Path.Combine(destinationDir, subDir.Name);
+                    CopyDirectory(subDir.FullName, newDestinationDir, true);
+                }
+            }
+        }
+
+        public static void MoveDirectory(string sourceDir, string destinationDir)
+        {
+            CopyDirectory(sourceDir, destinationDir, true);
+            Directory.Delete(sourceDir, true);
+        }
+    }
+}

src/Ryujinx.Graphics.Vulkan/PipelineBase.cs

@@ -34,7 +34,8 @@ namespace Ryujinx.Graphics.Vulkan
 
         protected PipelineDynamicState DynamicState;
         private PipelineState _newState;
-        private bool _stateDirty;
+        private bool _graphicsStateDirty;
+        private bool _computeStateDirty;
         private PrimitiveTopology _topology;
 
         private ulong _currentPipelineHandle;
@@ -353,7 +354,7 @@ namespace Ryujinx.Graphics.Vulkan
             }
 
             EndRenderPass();
-            RecreatePipelineIfNeeded(PipelineBindPoint.Compute);
+            RecreateComputePipelineIfNeeded();
 
             Gd.Api.CmdDispatch(CommandBuffer, (uint)groupsX, (uint)groupsY, (uint)groupsZ);
         }
@@ -366,19 +367,23 @@ namespace Ryujinx.Graphics.Vulkan
             }
 
             EndRenderPass();
-            RecreatePipelineIfNeeded(PipelineBindPoint.Compute);
+            RecreateComputePipelineIfNeeded();
 
             Gd.Api.CmdDispatchIndirect(CommandBuffer, indirectBuffer.Get(Cbs, indirectBufferOffset, 12).Value, (ulong)indirectBufferOffset);
         }
 
         public void Draw(int vertexCount, int instanceCount, int firstVertex, int firstInstance)
         {
-            if (!_program.IsLinked || vertexCount == 0)
+            if (vertexCount == 0)
+            {
+                return;
+            }
+
+            if (!RecreateGraphicsPipelineIfNeeded())
             {
                 return;
             }
 
-            RecreatePipelineIfNeeded(PipelineBindPoint.Graphics);
             BeginRenderPass();
             DrawCount++;
 
@@ -437,13 +442,18 @@ namespace Ryujinx.Graphics.Vulkan
 
         public void DrawIndexed(int indexCount, int instanceCount, int firstIndex, int firstVertex, int firstInstance)
         {
-            if (!_program.IsLinked || indexCount == 0)
+            if (indexCount == 0)
             {
                 return;
             }
 
             UpdateIndexBufferPattern();
-            RecreatePipelineIfNeeded(PipelineBindPoint.Graphics);
+
+            if (!RecreateGraphicsPipelineIfNeeded())
+            {
+                return;
+            }
+
             BeginRenderPass();
             DrawCount++;
 
@@ -476,17 +486,17 @@ namespace Ryujinx.Graphics.Vulkan
 
         public void DrawIndexedIndirect(BufferRange indirectBuffer)
         {
-            if (!_program.IsLinked)
-            {
-                return;
-            }
-
             var buffer = Gd.BufferManager
                 .GetBuffer(CommandBuffer, indirectBuffer.Handle, indirectBuffer.Offset, indirectBuffer.Size, false)
                 .Get(Cbs, indirectBuffer.Offset, indirectBuffer.Size).Value;
 
             UpdateIndexBufferPattern();
-            RecreatePipelineIfNeeded(PipelineBindPoint.Graphics);
+
+            if (!RecreateGraphicsPipelineIfNeeded())
+            {
+                return;
+            }
+
             BeginRenderPass();
             DrawCount++;
 
@@ -522,11 +532,6 @@ namespace Ryujinx.Graphics.Vulkan
 
         public void DrawIndexedIndirectCount(BufferRange indirectBuffer, BufferRange parameterBuffer, int maxDrawCount, int stride)
         {
-            if (!_program.IsLinked)
-            {
-                return;
-            }
-
             var countBuffer = Gd.BufferManager
                 .GetBuffer(CommandBuffer, parameterBuffer.Handle, parameterBuffer.Offset, parameterBuffer.Size, false)
                 .Get(Cbs, parameterBuffer.Offset, parameterBuffer.Size).Value;
@@ -536,7 +541,12 @@ namespace Ryujinx.Graphics.Vulkan
                 .Get(Cbs, indirectBuffer.Offset, indirectBuffer.Size).Value;
 
             UpdateIndexBufferPattern();
-            RecreatePipelineIfNeeded(PipelineBindPoint.Graphics);
+
+            if (!RecreateGraphicsPipelineIfNeeded())
+            {
+                return;
+            }
+
             BeginRenderPass();
             DrawCount++;
 
@@ -614,18 +624,17 @@ namespace Ryujinx.Graphics.Vulkan
 
         public void DrawIndirect(BufferRange indirectBuffer)
         {
-            if (!_program.IsLinked)
-            {
-                return;
-            }
-
             // TODO: Support quads and other unsupported topologies.
 
             var buffer = Gd.BufferManager
                 .GetBuffer(CommandBuffer, indirectBuffer.Handle, indirectBuffer.Offset, indirectBuffer.Size, false)
                 .Get(Cbs, indirectBuffer.Offset, indirectBuffer.Size, false).Value;
 
-            RecreatePipelineIfNeeded(PipelineBindPoint.Graphics);
+            if (!RecreateGraphicsPipelineIfNeeded())
+            {
+                return;
+            }
+
             BeginRenderPass();
             ResumeTransformFeedbackInternal();
             DrawCount++;
@@ -641,11 +650,6 @@ namespace Ryujinx.Graphics.Vulkan
                 throw new NotSupportedException();
             }
 
-            if (!_program.IsLinked)
-            {
-                return;
-            }
-
             var buffer = Gd.BufferManager
                 .GetBuffer(CommandBuffer, indirectBuffer.Handle, indirectBuffer.Offset, indirectBuffer.Size, false)
                 .Get(Cbs, indirectBuffer.Offset, indirectBuffer.Size, false).Value;
@@ -656,7 +660,11 @@ namespace Ryujinx.Graphics.Vulkan
 
             // TODO: Support quads and other unsupported topologies.
 
-            RecreatePipelineIfNeeded(PipelineBindPoint.Graphics);
+            if (!RecreateGraphicsPipelineIfNeeded())
+            {
+                return;
+            }
+
             BeginRenderPass();
             ResumeTransformFeedbackInternal();
             DrawCount++;
@@ -1576,10 +1584,23 @@ namespace Ryujinx.Graphics.Vulkan
 
         protected void SignalStateChange()
         {
-            _stateDirty = true;
+            _graphicsStateDirty = true;
+            _computeStateDirty = true;
         }
 
-        private void RecreatePipelineIfNeeded(PipelineBindPoint pbp)
+        private void RecreateComputePipelineIfNeeded()
+        {
+            if (_computeStateDirty || Pbp != PipelineBindPoint.Compute)
+            {
+                CreatePipeline(PipelineBindPoint.Compute);
+                _computeStateDirty = false;
+                Pbp = PipelineBindPoint.Compute;
+            }
+
+            _descriptorSetUpdater.UpdateAndBindDescriptorSets(Cbs, PipelineBindPoint.Compute);
+        }
+
+        private bool RecreateGraphicsPipelineIfNeeded()
         {
             if (AutoFlush.ShouldFlushDraw(DrawCount))
             {
@@ -1620,17 +1641,23 @@ namespace Ryujinx.Graphics.Vulkan
                 _vertexBufferUpdater.Commit(Cbs);
             }
 
-            if (_stateDirty || Pbp != pbp)
+            if (_graphicsStateDirty || Pbp != PipelineBindPoint.Graphics)
             {
-                CreatePipeline(pbp);
-                _stateDirty = false;
-                Pbp = pbp;
+                if (!CreatePipeline(PipelineBindPoint.Graphics))
+                {
+                    return false;
+                }
+
+                _graphicsStateDirty = false;
+                Pbp = PipelineBindPoint.Graphics;
             }
 
-            _descriptorSetUpdater.UpdateAndBindDescriptorSets(Cbs, pbp);
+            _descriptorSetUpdater.UpdateAndBindDescriptorSets(Cbs, PipelineBindPoint.Graphics);
+
+            return true;
         }
 
-        private void CreatePipeline(PipelineBindPoint pbp)
+        private bool CreatePipeline(PipelineBindPoint pbp)
         {
             // We can only create a pipeline if the have the shader stages set.
             if (_newState.Stages != null)
@@ -1640,10 +1667,25 @@ namespace Ryujinx.Graphics.Vulkan
                     CreateRenderPass();
                 }
 
+                if (!_program.IsLinked)
+                {
+                    // Background compile failed, we likely can't create the pipeline because the shader is broken
+                    // or the driver failed to compile it.
+
+                    return false;
+                }
+
                 var pipeline = pbp == PipelineBindPoint.Compute
                     ? _newState.CreateComputePipeline(Gd, Device, _program, PipelineCache)
                     : _newState.CreateGraphicsPipeline(Gd, Device, _program, PipelineCache, _renderPass.Get(Cbs).Value);
 
+                if (pipeline == null)
+                {
+                    // Host failed to create the pipeline, likely due to driver bugs.
+
+                    return false;
+                }
+
                 ulong pipelineHandle = pipeline.GetUnsafe().Value.Handle;
 
                 if (_currentPipelineHandle != pipelineHandle)
@@ -1655,6 +1697,8 @@ namespace Ryujinx.Graphics.Vulkan
                     Gd.Api.CmdBindPipeline(CommandBuffer, pbp, Pipeline.Get(Cbs).Value);
                 }
             }
+
+            return true;
         }
 
         private unsafe void BeginRenderPass()

src/Ryujinx.Graphics.Vulkan/PipelineFull.cs

@@ -246,7 +246,10 @@ namespace Ryujinx.Graphics.Vulkan
 
             SignalCommandBufferChange();
 
-            DynamicState.ReplayIfDirty(Gd.Api, CommandBuffer);
+            if (Pipeline != null && Pbp == PipelineBindPoint.Graphics)
+            {
+                DynamicState.ReplayIfDirty(Gd.Api, CommandBuffer);
+            }
         }
 
         public void FlushCommandsImpl()

src/Ryujinx.Graphics.Vulkan/PipelineState.cs

@@ -312,7 +312,6 @@ namespace Ryujinx.Graphics.Vulkan
         }
 
         public NativeArray<PipelineShaderStageCreateInfo> Stages;
-        public NativeArray<PipelineShaderStageRequiredSubgroupSizeCreateInfoEXT> StageRequiredSubgroupSizes;
         public PipelineLayout PipelineLayout;
         public SpecData SpecializationData;
 
@@ -321,16 +320,6 @@ namespace Ryujinx.Graphics.Vulkan
         public void Initialize()
         {
             Stages = new NativeArray<PipelineShaderStageCreateInfo>(Constants.MaxShaderStages);
-            StageRequiredSubgroupSizes = new NativeArray<PipelineShaderStageRequiredSubgroupSizeCreateInfoEXT>(Constants.MaxShaderStages);
-
-            for (int index = 0; index < Constants.MaxShaderStages; index++)
-            {
-                StageRequiredSubgroupSizes[index] = new PipelineShaderStageRequiredSubgroupSizeCreateInfoEXT
-                {
-                    SType = StructureType.PipelineShaderStageRequiredSubgroupSizeCreateInfoExt,
-                    RequiredSubgroupSize = RequiredSubgroupSize,
-                };
-            }
 
             AdvancedBlendSrcPreMultiplied = true;
             AdvancedBlendDstPreMultiplied = true;
@@ -397,7 +386,8 @@ namespace Ryujinx.Graphics.Vulkan
             Device device,
             ShaderCollection program,
             PipelineCache cache,
-            RenderPass renderPass)
+            RenderPass renderPass,
+            bool throwOnError = false)
         {
             if (program.TryGetGraphicsPipeline(ref Internal, out var pipeline))
             {
@@ -630,7 +620,18 @@ namespace Ryujinx.Graphics.Vulkan
                     BasePipelineIndex = -1,
                 };
 
-                gd.Api.CreateGraphicsPipelines(device, cache, 1, &pipelineCreateInfo, null, &pipelineHandle).ThrowOnError();
+                Result result = gd.Api.CreateGraphicsPipelines(device, cache, 1, &pipelineCreateInfo, null, &pipelineHandle);
+
+                if (throwOnError)
+                {
+                    result.ThrowOnError();
+                }
+                else if (result.IsError())
+                {
+                    program.AddGraphicsPipeline(ref Internal, null);
+
+                    return null;
+                }
 
                 // Restore previous blend enable values if we changed it.
                 while (blendEnables != 0)
@@ -708,7 +709,6 @@ namespace Ryujinx.Graphics.Vulkan
         public readonly void Dispose()
         {
             Stages.Dispose();
-            StageRequiredSubgroupSizes.Dispose();
         }
     }
 }

src/Ryujinx.Graphics.Vulkan/ShaderCollection.cs

@@ -374,7 +374,7 @@ namespace Ryujinx.Graphics.Vulkan
             pipeline.StagesCount = (uint)_shaders.Length;
             pipeline.PipelineLayout = PipelineLayout;
 
-            pipeline.CreateGraphicsPipeline(_gd, _device, this, (_gd.Pipeline as PipelineBase).PipelineCache, renderPass.Value);
+            pipeline.CreateGraphicsPipeline(_gd, _device, this, (_gd.Pipeline as PipelineBase).PipelineCache, renderPass.Value, throwOnError: true);
             pipeline.Dispose();
         }
 
@@ -511,7 +511,7 @@ namespace Ryujinx.Graphics.Vulkan
                 {
                     foreach (Auto<DisposablePipeline> pipeline in _graphicsPipelineCache.Values)
                     {
-                        pipeline.Dispose();
+                        pipeline?.Dispose();
                     }
                 }
 

src/Ryujinx.Graphics.Vulkan/VulkanException.cs

@@ -6,10 +6,16 @@ namespace Ryujinx.Graphics.Vulkan
 {
     static class ResultExtensions
     {
+        public static bool IsError(this Result result)
+        {
+            // Only negative result codes are errors.
+            return result < Result.Success;
+        }
+
         public static void ThrowOnError(this Result result)
         {
             // Only negative result codes are errors.
-            if ((int)result < (int)Result.Success)
+            if (result.IsError())
             {
                 throw new VulkanException(result);
             }

src/Ryujinx.HLE/HOS/Horizon.cs

@@ -330,7 +330,7 @@ namespace Ryujinx.HLE.HOS
             HorizonFsClient fsClient = new(this);
 
             ServiceTable = new ServiceTable();
-            var services = ServiceTable.GetServices(new HorizonOptions(Device.Configuration.IgnoreMissingServices, LibHacHorizonManager.BcatClient, fsClient));
+            var services = ServiceTable.GetServices(new HorizonOptions(Device.Configuration.IgnoreMissingServices, LibHacHorizonManager.BcatClient, fsClient, AccountManager));
 
             foreach (var service in services)
             {

src/Ryujinx.HLE/HOS/ModLoader.cs

@@ -18,6 +18,7 @@ using System.Collections.Specialized;
 using System.Globalization;
 using System.IO;
 using System.Linq;
+using LazyFile = Ryujinx.HLE.HOS.Services.Fs.FileSystemProxy.LazyFile;
 using Path = System.IO.Path;
 
 namespace Ryujinx.HLE.HOS
@@ -512,7 +513,7 @@ namespace Ryujinx.HLE.HOS
 
                 using (IFileSystem fs = new LocalFileSystem(mod.Path.FullName))
                 {
-                    AddFiles(fs, mod.Name, fileSet, builder);
+                    AddFiles(fs, mod.Name, mod.Path.FullName, fileSet, builder);
                 }
                 count++;
             }
@@ -528,7 +529,7 @@ namespace Ryujinx.HLE.HOS
                 Logger.Info?.Print(LogClass.ModLoader, $"Found 'romfs.bin' for Application {applicationId:X16}");
                 using (IFileSystem fs = new RomFsFileSystem(mod.Path.OpenRead().AsStorage()))
                 {
-                    AddFiles(fs, mod.Name, fileSet, builder);
+                    AddFiles(fs, mod.Name, mod.Path.FullName, fileSet, builder);
                 }
                 count++;
             }
@@ -561,18 +562,18 @@ namespace Ryujinx.HLE.HOS
             return newStorage;
         }
 
-        private static void AddFiles(IFileSystem fs, string modName, ISet<string> fileSet, RomFsBuilder builder)
+        private static void AddFiles(IFileSystem fs, string modName, string rootPath, ISet<string> fileSet, RomFsBuilder builder)
         {
             foreach (var entry in fs.EnumerateEntries()
+                                    .AsParallel()
                                     .Where(f => f.Type == DirectoryEntryType.File)
                                     .OrderBy(f => f.FullPath, StringComparer.Ordinal))
             {
-                using var file = new UniqueRef<IFile>();
+                var file = new LazyFile(entry.FullPath, rootPath, fs);
 
-                fs.OpenFile(ref file.Ref, entry.FullPath.ToU8Span(), OpenMode.Read).ThrowIfFailure();
                 if (fileSet.Add(entry.FullPath))
                 {
-                    builder.AddFile(entry.FullPath, file.Release());
+                    builder.AddFile(entry.FullPath, file);
                 }
                 else
                 {

src/Ryujinx.HLE/HOS/Services/Account/Acc/AccountManager.cs

@@ -4,6 +4,7 @@ using LibHac.Fs;
 using LibHac.Fs.Shim;
 using Ryujinx.Common;
 using Ryujinx.Common.Logging;
+using Ryujinx.Horizon.Sdk.Account;
 using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
@@ -11,7 +12,7 @@ using System.Linq;
 
 namespace Ryujinx.HLE.HOS.Services.Account.Acc
 {
-    public class AccountManager
+    public class AccountManager : IEmulatorAccountManager
     {
         public static readonly UserId DefaultUserId = new("00000000000000010000000000000000");
 
@@ -106,6 +107,11 @@ namespace Ryujinx.HLE.HOS.Services.Account.Acc
             _accountSaveDataManager.Save(_profiles);
         }
 
+        public void OpenUserOnlinePlay(Uid userId)
+        {
+            OpenUserOnlinePlay(new UserId((long)userId.Low, (long)userId.High));
+        }
+
         public void OpenUserOnlinePlay(UserId userId)
         {
             if (_profiles.TryGetValue(userId.ToString(), out UserProfile profile))
@@ -127,6 +133,11 @@ namespace Ryujinx.HLE.HOS.Services.Account.Acc
             _accountSaveDataManager.Save(_profiles);
         }
 
+        public void CloseUserOnlinePlay(Uid userId)
+        {
+            CloseUserOnlinePlay(new UserId((long)userId.Low, (long)userId.High));
+        }
+
         public void CloseUserOnlinePlay(UserId userId)
         {
             if (_profiles.TryGetValue(userId.ToString(), out UserProfile profile))

src/Ryujinx.HLE/HOS/Services/Friend/IServiceCreator.cs

@@ -1,55 +0,0 @@
-using Ryujinx.Common;
-using Ryujinx.HLE.HOS.Services.Account.Acc;
-using Ryujinx.HLE.HOS.Services.Friend.ServiceCreator;
-
-namespace Ryujinx.HLE.HOS.Services.Friend
-{
-    [Service("friend:a", FriendServicePermissionLevel.Administrator)]
-    [Service("friend:m", FriendServicePermissionLevel.Manager)]
-    [Service("friend:s", FriendServicePermissionLevel.System)]
-    [Service("friend:u", FriendServicePermissionLevel.User)]
-    [Service("friend:v", FriendServicePermissionLevel.Viewer)]
-    class IServiceCreator : IpcService
-    {
-        private readonly FriendServicePermissionLevel _permissionLevel;
-
-        public IServiceCreator(ServiceCtx context, FriendServicePermissionLevel permissionLevel)
-        {
-            _permissionLevel = permissionLevel;
-        }
-
-        [CommandCmif(0)]
-        // CreateFriendService() -> object<nn::friends::detail::ipc::IFriendService>
-        public ResultCode CreateFriendService(ServiceCtx context)
-        {
-            MakeObject(context, new IFriendService(_permissionLevel));
-
-            return ResultCode.Success;
-        }
-
-        [CommandCmif(1)] // 2.0.0+
-        // CreateNotificationService(nn::account::Uid userId) -> object<nn::friends::detail::ipc::INotificationService>
-        public ResultCode CreateNotificationService(ServiceCtx context)
-        {
-            UserId userId = context.RequestData.ReadStruct<UserId>();
-
-            if (userId.IsNull)
-            {
-                return ResultCode.InvalidArgument;
-            }
-
-            MakeObject(context, new INotificationService(context, userId, _permissionLevel));
-
-            return ResultCode.Success;
-        }
-
-        [CommandCmif(2)] // 4.0.0+
-        // CreateDaemonSuspendSessionService() -> object<nn::friends::detail::ipc::IDaemonSuspendSessionService>
-        public ResultCode CreateDaemonSuspendSessionService(ServiceCtx context)
-        {
-            MakeObject(context, new IDaemonSuspendSessionService(_permissionLevel));
-
-            return ResultCode.Success;
-        }
-    }
-}

src/Ryujinx.HLE/HOS/Services/Friend/ResultCode.cs

@@ -1,14 +0,0 @@
-namespace Ryujinx.HLE.HOS.Services.Friend
-{
-    enum ResultCode
-    {
-        ModuleId = 121,
-        ErrorCodeShift = 9,
-
-        Success = 0,
-
-        InvalidArgument = (2 << ErrorCodeShift) | ModuleId,
-        InternetRequestDenied = (6 << ErrorCodeShift) | ModuleId,
-        NotificationQueueEmpty = (15 << ErrorCodeShift) | ModuleId,
-    }
-}

src/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/Friend.cs

@@ -1,29 +0,0 @@
-using Ryujinx.HLE.HOS.Services.Account.Acc;
-using System.Runtime.InteropServices;
-
-namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.FriendService
-{
-    [StructLayout(LayoutKind.Sequential, Pack = 0x8, Size = 0x200, CharSet = CharSet.Ansi)]
-    struct Friend
-    {
-        public UserId UserId;
-        public long NetworkUserId;
-
-        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 0x21)]
-        public string Nickname;
-
-        public UserPresence presence;
-
-        [MarshalAs(UnmanagedType.I1)]
-        public bool IsFavourite;
-
-        [MarshalAs(UnmanagedType.I1)]
-        public bool IsNew;
-
-        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x6)]
-        readonly char[] Unknown;
-
-        [MarshalAs(UnmanagedType.I1)]
-        public bool IsValid;
-    }
-}

src/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/FriendFilter.cs

@@ -1,24 +0,0 @@
-using System.Runtime.InteropServices;
-
-namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.FriendService
-{
-    [StructLayout(LayoutKind.Sequential)]
-    struct FriendFilter
-    {
-        public PresenceStatusFilter PresenceStatus;
-
-        [MarshalAs(UnmanagedType.I1)]
-        public bool IsFavoriteOnly;
-
-        [MarshalAs(UnmanagedType.I1)]
-        public bool IsSameAppPresenceOnly;
-
-        [MarshalAs(UnmanagedType.I1)]
-        public bool IsSameAppPlayedOnly;
-
-        [MarshalAs(UnmanagedType.I1)]
-        public bool IsArbitraryAppPlayedOnly;
-
-        public long PresenceGroupId;
-    }
-}

src/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/UserPresence.cs

@@ -1,34 +0,0 @@
-using Ryujinx.Common.Memory;
-using Ryujinx.HLE.HOS.Services.Account.Acc;
-using System;
-using System.Runtime.InteropServices;
-
-namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.FriendService
-{
-    [StructLayout(LayoutKind.Sequential, Pack = 0x8)]
-    struct UserPresence
-    {
-        public UserId UserId;
-        public long LastTimeOnlineTimestamp;
-        public PresenceStatus Status;
-
-        [MarshalAs(UnmanagedType.I1)]
-        public bool SamePresenceGroupApplication;
-
-        public Array3<byte> Unknown;
-        private AppKeyValueStorageHolder _appKeyValueStorage;
-
-        public Span<byte> AppKeyValueStorage => MemoryMarshal.Cast<AppKeyValueStorageHolder, byte>(MemoryMarshal.CreateSpan(ref _appKeyValueStorage, AppKeyValueStorageHolder.Size));
-
-        [StructLayout(LayoutKind.Sequential, Pack = 0x1, Size = Size)]
-        private struct AppKeyValueStorageHolder
-        {
-            public const int Size = 0xC0;
-        }
-
-        public readonly override string ToString()
-        {
-            return $"UserPresence {{ UserId: {UserId}, LastTimeOnlineTimestamp: {LastTimeOnlineTimestamp}, Status: {Status} }}";
-        }
-    }
-}

src/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/IDaemonSuspendSessionService.cs

@@ -1,14 +0,0 @@
-namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator
-{
-    class IDaemonSuspendSessionService : IpcService
-    {
-#pragma warning disable IDE0052 // Remove unread private member
-        private readonly FriendServicePermissionLevel _permissionLevel;
-#pragma warning restore IDE0052
-
-        public IDaemonSuspendSessionService(FriendServicePermissionLevel permissionLevel)
-        {
-            _permissionLevel = permissionLevel;
-        }
-    }
-}

src/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/IFriendService.cs

@@ -1,374 +0,0 @@
-using LibHac.Ns;
-using Ryujinx.Common;
-using Ryujinx.Common.Logging;
-using Ryujinx.Common.Memory;
-using Ryujinx.Common.Utilities;
-using Ryujinx.HLE.HOS.Ipc;
-using Ryujinx.HLE.HOS.Kernel.Threading;
-using Ryujinx.HLE.HOS.Services.Account.Acc;
-using Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.FriendService;
-using Ryujinx.Horizon.Common;
-using System;
-using System.Runtime.InteropServices;
-
-namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator
-{
-    class IFriendService : IpcService
-    {
-#pragma warning disable IDE0052 // Remove unread private member
-        private readonly FriendServicePermissionLevel _permissionLevel;
-#pragma warning restore IDE0052
-        private KEvent _completionEvent;
-
-        public IFriendService(FriendServicePermissionLevel permissionLevel)
-        {
-            _permissionLevel = permissionLevel;
-        }
-
-        [CommandCmif(0)]
-        // GetCompletionEvent() -> handle<copy>
-        public ResultCode GetCompletionEvent(ServiceCtx context)
-        {
-            _completionEvent ??= new KEvent(context.Device.System.KernelContext);
-
-            if (context.Process.HandleTable.GenerateHandle(_completionEvent.ReadableEvent, out int completionEventHandle) != Result.Success)
-            {
-                throw new InvalidOperationException("Out of handles!");
-            }
-
-            _completionEvent.WritableEvent.Signal();
-
-            context.Response.HandleDesc = IpcHandleDesc.MakeCopy(completionEventHandle);
-
-            return ResultCode.Success;
-        }
-
-        [CommandCmif(1)]
-        // nn::friends::Cancel()
-        public ResultCode Cancel(ServiceCtx context)
-        {
-            // TODO: Original service sets an internal field to 1 here. Determine usage.
-            Logger.Stub?.PrintStub(LogClass.ServiceFriend);
-
-            return ResultCode.Success;
-        }
-
-        [CommandCmif(10100)]
-        // nn::friends::GetFriendListIds(int offset, nn::account::Uid userId, nn::friends::detail::ipc::SizedFriendFilter friendFilter, ulong pidPlaceHolder, pid)
-        // -> int outCount, array<nn::account::NetworkServiceAccountId, 0xa>
-        public ResultCode GetFriendListIds(ServiceCtx context)
-        {
-            int offset = context.RequestData.ReadInt32();
-
-            // Padding
-            context.RequestData.ReadInt32();
-
-            UserId userId = context.RequestData.ReadStruct<UserId>();
-            FriendFilter filter = context.RequestData.ReadStruct<FriendFilter>();
-
-            // Pid placeholder
-            context.RequestData.ReadInt64();
-
-            if (userId.IsNull)
-            {
-                return ResultCode.InvalidArgument;
-            }
-
-            // There are no friends online, so we return 0 because the nn::account::NetworkServiceAccountId array is empty.
-            context.ResponseData.Write(0);
-
-            Logger.Stub?.PrintStub(LogClass.ServiceFriend, new
-            {
-                UserId = userId.ToString(),
-                offset,
-                filter.PresenceStatus,
-                filter.IsFavoriteOnly,
-                filter.IsSameAppPresenceOnly,
-                filter.IsSameAppPlayedOnly,
-                filter.IsArbitraryAppPlayedOnly,
-                filter.PresenceGroupId,
-            });
-
-            return ResultCode.Success;
-        }
-
-        [CommandCmif(10101)]
-        // nn::friends::GetFriendList(int offset, nn::account::Uid userId, nn::friends::detail::ipc::SizedFriendFilter friendFilter, ulong pidPlaceHolder, pid)
-        // -> int outCount, array<nn::friends::detail::FriendImpl, 0x6>
-        public ResultCode GetFriendList(ServiceCtx context)
-        {
-            int offset = context.RequestData.ReadInt32();
-
-            // Padding
-            context.RequestData.ReadInt32();
-
-            UserId userId = context.RequestData.ReadStruct<UserId>();
-            FriendFilter filter = context.RequestData.ReadStruct<FriendFilter>();
-
-            // Pid placeholder
-            context.RequestData.ReadInt64();
-
-            if (userId.IsNull)
-            {
-                return ResultCode.InvalidArgument;
-            }
-
-            // There are no friends online, so we return 0 because the nn::account::NetworkServiceAccountId array is empty.
-            context.ResponseData.Write(0);
-
-            Logger.Stub?.PrintStub(LogClass.ServiceFriend, new
-            {
-                UserId = userId.ToString(),
-                offset,
-                filter.PresenceStatus,
-                filter.IsFavoriteOnly,
-                filter.IsSameAppPresenceOnly,
-                filter.IsSameAppPlayedOnly,
-                filter.IsArbitraryAppPlayedOnly,
-                filter.PresenceGroupId,
-            });
-
-            return ResultCode.Success;
-        }
-
-        [CommandCmif(10120)] // 10.0.0+
-        // nn::friends::IsFriendListCacheAvailable(nn::account::Uid userId) -> bool
-        public ResultCode IsFriendListCacheAvailable(ServiceCtx context)
-        {
-            UserId userId = context.RequestData.ReadStruct<UserId>();
-
-            if (userId.IsNull)
-            {
-                return ResultCode.InvalidArgument;
-            }
-
-            // TODO: Service mount the friends:/ system savedata and try to load friend.cache file, returns true if exists, false otherwise.
-            // NOTE: If no cache is available, guest then calls nn::friends::EnsureFriendListAvailable, we can avoid that by faking the cache check.
-            context.ResponseData.Write(true);
-
-            // TODO: Since we don't support friend features, it's fine to stub it for now.
-            Logger.Stub?.PrintStub(LogClass.ServiceFriend, new { UserId = userId.ToString() });
-
-            return ResultCode.Success;
-        }
-
-        [CommandCmif(10121)] // 10.0.0+
-        // nn::friends::EnsureFriendListAvailable(nn::account::Uid userId)
-        public ResultCode EnsureFriendListAvailable(ServiceCtx context)
-        {
-            UserId userId = context.RequestData.ReadStruct<UserId>();
-
-            if (userId.IsNull)
-            {
-                return ResultCode.InvalidArgument;
-            }
-
-            // TODO: Service mount the friends:/ system savedata and create a friend.cache file for the given user id.
-            //       Since we don't support friend features, it's fine to stub it for now.
-            Logger.Stub?.PrintStub(LogClass.ServiceFriend, new { UserId = userId.ToString() });
-
-            return ResultCode.Success;
-        }
-
-        [CommandCmif(10400)]
-        // nn::friends::GetBlockedUserListIds(int offset, nn::account::Uid userId) -> (u32, buffer<nn::account::NetworkServiceAccountId, 0xa>)
-        public ResultCode GetBlockedUserListIds(ServiceCtx context)
-        {
-            int offset = context.RequestData.ReadInt32();
-
-            // Padding
-            context.RequestData.ReadInt32();
-
-            UserId userId = context.RequestData.ReadStruct<UserId>();
-
-            // There are no friends blocked, so we return 0 because the nn::account::NetworkServiceAccountId array is empty.
-            context.ResponseData.Write(0);
-
-            Logger.Stub?.PrintStub(LogClass.ServiceFriend, new { offset, UserId = userId.ToString() });
-
-            return ResultCode.Success;
-        }
-
-        [CommandCmif(10420)]
-        // nn::friends::CheckBlockedUserListAvailability(nn::account::Uid userId) -> bool
-        public ResultCode CheckBlockedUserListAvailability(ServiceCtx context)
-        {
-            UserId userId = context.RequestData.ReadStruct<UserId>();
-
-            // Yes, it is available.
-            context.ResponseData.Write(true);
-
-            Logger.Stub?.PrintStub(LogClass.ServiceFriend, new { UserId = userId.ToString() });
-
-            return ResultCode.Success;
-        }
-
-        [CommandCmif(10600)]
-        // nn::friends::DeclareOpenOnlinePlaySession(nn::account::Uid userId)
-        public ResultCode DeclareOpenOnlinePlaySession(ServiceCtx context)
-        {
-            UserId userId = context.RequestData.ReadStruct<UserId>();
-
-            if (userId.IsNull)
-            {
-                return ResultCode.InvalidArgument;
-            }
-
-            context.Device.System.AccountManager.OpenUserOnlinePlay(userId);
-
-            Logger.Stub?.PrintStub(LogClass.ServiceFriend, new { UserId = userId.ToString() });
-
-            return ResultCode.Success;
-        }
-
-        [CommandCmif(10601)]
-        // nn::friends::DeclareCloseOnlinePlaySession(nn::account::Uid userId)
-        public ResultCode DeclareCloseOnlinePlaySession(ServiceCtx context)
-        {
-            UserId userId = context.RequestData.ReadStruct<UserId>();
-
-            if (userId.IsNull)
-            {
-                return ResultCode.InvalidArgument;
-            }
-
-            context.Device.System.AccountManager.CloseUserOnlinePlay(userId);
-
-            Logger.Stub?.PrintStub(LogClass.ServiceFriend, new { UserId = userId.ToString() });
-
-            return ResultCode.Success;
-        }
-
-        [CommandCmif(10610)]
-        // nn::friends::UpdateUserPresence(nn::account::Uid, u64, pid, buffer<nn::friends::detail::UserPresenceImpl, 0x19>)
-        public ResultCode UpdateUserPresence(ServiceCtx context)
-        {
-            UserId uuid = context.RequestData.ReadStruct<UserId>();
-
-            // Pid placeholder
-            context.RequestData.ReadInt64();
-
-            ulong position = context.Request.PtrBuff[0].Position;
-            ulong size = context.Request.PtrBuff[0].Size;
-
-            ReadOnlySpan<UserPresence> userPresenceInputArray = MemoryMarshal.Cast<byte, UserPresence>(context.Memory.GetSpan(position, (int)size));
-
-            if (uuid.IsNull)
-            {
-                return ResultCode.InvalidArgument;
-            }
-
-            Logger.Stub?.PrintStub(LogClass.ServiceFriend, new { UserId = uuid.ToString(), userPresenceInputArray = userPresenceInputArray.ToArray() });
-
-            return ResultCode.Success;
-        }
-
-        [CommandCmif(10700)]
-        // nn::friends::GetPlayHistoryRegistrationKey(b8 unknown, nn::account::Uid) -> buffer<nn::friends::PlayHistoryRegistrationKey, 0x1a>
-        public ResultCode GetPlayHistoryRegistrationKey(ServiceCtx context)
-        {
-            bool unknownBool = context.RequestData.ReadBoolean();
-            UserId userId = context.RequestData.ReadStruct<UserId>();
-
-            context.Response.PtrBuff[0] = context.Response.PtrBuff[0].WithSize(0x40UL);
-
-            ulong bufferPosition = context.Request.RecvListBuff[0].Position;
-
-            if (userId.IsNull)
-            {
-                return ResultCode.InvalidArgument;
-            }
-
-            // NOTE: Calls nn::friends::detail::service::core::PlayHistoryManager::GetInstance and stores the instance.
-
-            byte[] randomBytes = new byte[8];
-
-            Random.Shared.NextBytes(randomBytes);
-
-            // NOTE: Calls nn::friends::detail::service::core::UuidManager::GetInstance and stores the instance.
-            //       Then call nn::friends::detail::service::core::AccountStorageManager::GetInstance and store the instance.
-            //       Then it checks if an Uuid is already stored for the UserId, if not it generates a random Uuid.
-            //       And store it in the savedata 8000000000000080 in the friends:/uid.bin file.
-
-            Array16<byte> randomGuid = new();
-
-            Guid.NewGuid().ToByteArray().AsSpan().CopyTo(randomGuid.AsSpan());
-
-            PlayHistoryRegistrationKey playHistoryRegistrationKey = new()
-            {
-                Type = 0x101,
-                KeyIndex = (byte)(randomBytes[0] & 7),
-                UserIdBool = 0, // TODO: Find it.
-                UnknownBool = (byte)(unknownBool ? 1 : 0), // TODO: Find it.
-                Reserved = new Array11<byte>(),
-                Uuid = randomGuid,
-            };
-
-            ReadOnlySpan<byte> playHistoryRegistrationKeyBuffer = SpanHelpers.AsByteSpan(ref playHistoryRegistrationKey);
-
-            /*
-
-            NOTE: The service uses the KeyIndex to get a random key from a keys buffer (since the key index is stored in the returned buffer).
-                  We currently don't support play history and online services so we can use a blank key for now.
-                  Code for reference:
-
-            byte[] hmacKey = new byte[0x20];
-
-            HMACSHA256 hmacSha256 = new HMACSHA256(hmacKey);
-            byte[]     hmacHash   = hmacSha256.ComputeHash(playHistoryRegistrationKeyBuffer);
-
-            */
-
-            context.Memory.Write(bufferPosition, playHistoryRegistrationKeyBuffer);
-            context.Memory.Write(bufferPosition + 0x20, new byte[0x20]); // HmacHash
-
-            return ResultCode.Success;
-        }
-
-        [CommandCmif(10702)]
-        // nn::friends::AddPlayHistory(nn::account::Uid, u64, pid, buffer<nn::friends::PlayHistoryRegistrationKey, 0x19>, buffer<nn::friends::InAppScreenName, 0x19>, buffer<nn::friends::InAppScreenName, 0x19>)
-        public ResultCode AddPlayHistory(ServiceCtx context)
-        {
-            UserId userId = context.RequestData.ReadStruct<UserId>();
-
-            // Pid placeholder
-            context.RequestData.ReadInt64();
-#pragma warning disable IDE0059 // Remove unnecessary value assignment
-            ulong pid = context.Request.HandleDesc.PId;
-
-            ulong playHistoryRegistrationKeyPosition = context.Request.PtrBuff[0].Position;
-            ulong playHistoryRegistrationKeySize = context.Request.PtrBuff[0].Size;
-
-            ulong inAppScreenName1Position = context.Request.PtrBuff[1].Position;
-#pragma warning restore IDE0059
-            ulong inAppScreenName1Size = context.Request.PtrBuff[1].Size;
-
-#pragma warning disable IDE0059 // Remove unnecessary value assignment
-            ulong inAppScreenName2Position = context.Request.PtrBuff[2].Position;
-#pragma warning restore IDE0059
-            ulong inAppScreenName2Size = context.Request.PtrBuff[2].Size;
-
-            if (userId.IsNull || inAppScreenName1Size > 0x48 || inAppScreenName2Size > 0x48)
-            {
-                return ResultCode.InvalidArgument;
-            }
-
-            // TODO: Call nn::arp::GetApplicationControlProperty here when implemented.
-#pragma warning disable IDE0059 // Remove unnecessary value assignment
-            ApplicationControlProperty controlProperty = context.Device.Processes.ActiveApplication.ApplicationControlProperties;
-#pragma warning restore IDE0059
-
-            /*
-
-            NOTE: The service calls nn::friends::detail::service::core::PlayHistoryManager to store informations using the registration key computed in GetPlayHistoryRegistrationKey.
-                  Then calls nn::friends::detail::service::core::FriendListManager to update informations on the friend list.
-                  We currently don't support play history and online services so it's fine to do nothing.
-
-            */
-
-            Logger.Stub?.PrintStub(LogClass.ServiceFriend);
-
-            return ResultCode.Success;
-        }
-    }
-}

src/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/INotificationService.cs

@@ -1,178 +0,0 @@
-using Ryujinx.Common;
-using Ryujinx.HLE.HOS.Ipc;
-using Ryujinx.HLE.HOS.Kernel.Threading;
-using Ryujinx.HLE.HOS.Services.Account.Acc;
-using Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.NotificationService;
-using Ryujinx.Horizon.Common;
-using System;
-using System.Collections.Generic;
-
-namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator
-{
-    class INotificationService : DisposableIpcService
-    {
-        private readonly UserId _userId;
-        private readonly FriendServicePermissionLevel _permissionLevel;
-
-        private readonly object _lock = new();
-
-        private readonly KEvent _notificationEvent;
-        private int _notificationEventHandle = 0;
-
-        private readonly LinkedList<NotificationInfo> _notifications;
-
-        private bool _hasNewFriendRequest;
-        private bool _hasFriendListUpdate;
-
-        public INotificationService(ServiceCtx context, UserId userId, FriendServicePermissionLevel permissionLevel)
-        {
-            _userId = userId;
-            _permissionLevel = permissionLevel;
-            _notifications = new LinkedList<NotificationInfo>();
-            _notificationEvent = new KEvent(context.Device.System.KernelContext);
-
-            _hasNewFriendRequest = false;
-            _hasFriendListUpdate = false;
-
-            NotificationEventHandler.Instance.RegisterNotificationService(this);
-        }
-
-        [CommandCmif(0)] //2.0.0+
-        // nn::friends::detail::ipc::INotificationService::GetEvent() -> handle<copy>
-        public ResultCode GetEvent(ServiceCtx context)
-        {
-            if (_notificationEventHandle == 0)
-            {
-                if (context.Process.HandleTable.GenerateHandle(_notificationEvent.ReadableEvent, out _notificationEventHandle) != Result.Success)
-                {
-                    throw new InvalidOperationException("Out of handles!");
-                }
-            }
-
-            context.Response.HandleDesc = IpcHandleDesc.MakeCopy(_notificationEventHandle);
-
-            return ResultCode.Success;
-        }
-
-        [CommandCmif(1)] //2.0.0+
-        // nn::friends::detail::ipc::INotificationService::Clear()
-        public ResultCode Clear(ServiceCtx context)
-        {
-            lock (_lock)
-            {
-                _hasNewFriendRequest = false;
-                _hasFriendListUpdate = false;
-
-                _notifications.Clear();
-            }
-
-            return ResultCode.Success;
-        }
-
-        [CommandCmif(2)] // 2.0.0+
-        // nn::friends::detail::ipc::INotificationService::Pop() -> nn::friends::detail::ipc::SizedNotificationInfo
-        public ResultCode Pop(ServiceCtx context)
-        {
-            lock (_lock)
-            {
-                if (_notifications.Count >= 1)
-                {
-                    NotificationInfo notificationInfo = _notifications.First.Value;
-                    _notifications.RemoveFirst();
-
-                    if (notificationInfo.Type == NotificationEventType.FriendListUpdate)
-                    {
-                        _hasFriendListUpdate = false;
-                    }
-                    else if (notificationInfo.Type == NotificationEventType.NewFriendRequest)
-                    {
-                        _hasNewFriendRequest = false;
-                    }
-
-                    context.ResponseData.WriteStruct(notificationInfo);
-
-                    return ResultCode.Success;
-                }
-            }
-
-            return ResultCode.NotificationQueueEmpty;
-        }
-
-        public void SignalFriendListUpdate(UserId targetId)
-        {
-            lock (_lock)
-            {
-                if (_userId == targetId)
-                {
-                    if (!_hasFriendListUpdate)
-                    {
-                        NotificationInfo friendListNotification = new();
-
-                        if (_notifications.Count != 0)
-                        {
-                            friendListNotification = _notifications.First.Value;
-                            _notifications.RemoveFirst();
-                        }
-
-                        friendListNotification.Type = NotificationEventType.FriendListUpdate;
-                        _hasFriendListUpdate = true;
-
-                        if (_hasNewFriendRequest)
-                        {
-                            NotificationInfo newFriendRequestNotification = new();
-
-                            if (_notifications.Count != 0)
-                            {
-                                newFriendRequestNotification = _notifications.First.Value;
-                                _notifications.RemoveFirst();
-                            }
-
-                            newFriendRequestNotification.Type = NotificationEventType.NewFriendRequest;
-                            _notifications.AddFirst(newFriendRequestNotification);
-                        }
-
-                        // We defer this to make sure we are on top of the queue.
-                        _notifications.AddFirst(friendListNotification);
-                    }
-
-                    _notificationEvent.ReadableEvent.Signal();
-                }
-            }
-        }
-
-        public void SignalNewFriendRequest(UserId targetId)
-        {
-            lock (_lock)
-            {
-                if ((_permissionLevel & FriendServicePermissionLevel.ViewerMask) != 0 && _userId == targetId)
-                {
-                    if (!_hasNewFriendRequest)
-                    {
-                        if (_notifications.Count == 100)
-                        {
-                            SignalFriendListUpdate(targetId);
-                        }
-
-                        NotificationInfo newFriendRequestNotification = new()
-                        {
-                            Type = NotificationEventType.NewFriendRequest,
-                        };
-
-                        _notifications.AddLast(newFriendRequestNotification);
-                        _hasNewFriendRequest = true;
-                    }
-
-                    _notificationEvent.ReadableEvent.Signal();
-                }
-            }
-        }
-
-        protected override void Dispose(bool isDisposing)
-        {
-            if (isDisposing)
-            {
-                NotificationEventHandler.Instance.UnregisterNotificationService(this);
-            }
-        }
-    }
-}

src/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/NotificationService/NotificationEventHandler.cs

@@ -1,74 +0,0 @@
-using Ryujinx.HLE.HOS.Services.Account.Acc;
-
-namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.NotificationService
-{
-    public sealed class NotificationEventHandler
-    {
-        private static NotificationEventHandler _instance;
-        private static readonly object _instanceLock = new();
-
-        private readonly INotificationService[] _registry;
-
-        public static NotificationEventHandler Instance
-        {
-            get
-            {
-                lock (_instanceLock)
-                {
-                    _instance ??= new NotificationEventHandler();
-
-                    return _instance;
-                }
-            }
-        }
-
-        NotificationEventHandler()
-        {
-            _registry = new INotificationService[0x20];
-        }
-
-        internal void RegisterNotificationService(INotificationService service)
-        {
-            // NOTE: in case there isn't space anymore in the registry array, Nintendo doesn't return any errors.
-            for (int i = 0; i < _registry.Length; i++)
-            {
-                if (_registry[i] == null)
-                {
-                    _registry[i] = service;
-                    break;
-                }
-            }
-        }
-
-        internal void UnregisterNotificationService(INotificationService service)
-        {
-            // NOTE: in case there isn't the entry in the registry array, Nintendo doesn't return any errors.
-            for (int i = 0; i < _registry.Length; i++)
-            {
-                if (_registry[i] == service)
-                {
-                    _registry[i] = null;
-                    break;
-                }
-            }
-        }
-
-        // TODO: Use this when we will have enough things to go online.
-        public void SignalFriendListUpdate(UserId targetId)
-        {
-            for (int i = 0; i < _registry.Length; i++)
-            {
-                _registry[i]?.SignalFriendListUpdate(targetId);
-            }
-        }
-
-        // TODO: Use this when we will have enough things to go online.
-        public void SignalNewFriendRequest(UserId targetId)
-        {
-            for (int i = 0; i < _registry.Length; i++)
-            {
-                _registry[i]?.SignalNewFriendRequest(targetId);
-            }
-        }
-    }
-}

src/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/NotificationService/Types/NotificationInfo.cs

@@ -1,13 +0,0 @@
-using Ryujinx.Common.Memory;
-using System.Runtime.InteropServices;
-
-namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.NotificationService
-{
-    [StructLayout(LayoutKind.Sequential, Size = 0x10)]
-    struct NotificationInfo
-    {
-        public NotificationEventType Type;
-        private Array4<byte> _padding;
-        public long NetworkUserIdPlaceholder;
-    }
-}

src/Ryujinx.HLE/HOS/Services/Fs/FileSystemProxy/LazyFile.cs

@@ -0,0 +1,65 @@
+using LibHac;
+using LibHac.Common;
+using LibHac.Fs;
+using System;
+using System.IO;
+
+namespace Ryujinx.HLE.HOS.Services.Fs.FileSystemProxy
+{
+    class LazyFile : LibHac.Fs.Fsa.IFile
+    {
+        private readonly LibHac.Fs.Fsa.IFileSystem _fs;
+        private readonly string _filePath;
+        private readonly UniqueRef<LibHac.Fs.Fsa.IFile> _fileReference = new();
+        private readonly FileInfo _fileInfo;
+
+        public LazyFile(string filePath, string prefix, LibHac.Fs.Fsa.IFileSystem fs)
+        {
+            _fs = fs;
+            _filePath = filePath;
+            _fileInfo = new FileInfo(prefix + "/" + filePath);
+        }
+
+        private void PrepareFile()
+        {
+            if (_fileReference.Get == null)
+            {
+                _fs.OpenFile(ref _fileReference.Ref, _filePath.ToU8Span(), OpenMode.Read).ThrowIfFailure();
+            }
+        }
+
+        protected override Result DoRead(out long bytesRead, long offset, Span<byte> destination, in ReadOption option)
+        {
+            PrepareFile();
+
+            return _fileReference.Get!.Read(out bytesRead, offset, destination);
+        }
+
+        protected override Result DoWrite(long offset, ReadOnlySpan<byte> source, in WriteOption option)
+        {
+            throw new NotSupportedException();
+        }
+
+        protected override Result DoFlush()
+        {
+            throw new NotSupportedException();
+        }
+
+        protected override Result DoSetSize(long size)
+        {
+            throw new NotSupportedException();
+        }
+
+        protected override Result DoGetSize(out long size)
+        {
+            size = _fileInfo.Length;
+
+            return Result.Success;
+        }
+
+        protected override Result DoOperateRange(Span<byte> outBuffer, OperationId operationId, long offset, long size, ReadOnlySpan<byte> inBuffer)
+        {
+            throw new NotSupportedException();
+        }
+    }
+}

src/Ryujinx.HLE/HOS/Services/Sockets/Bsd/IClient.cs

@@ -121,7 +121,14 @@ namespace Ryujinx.HLE.HOS.Services.Sockets.Bsd
         {
             IPEndPoint endPoint = isRemote ? socket.RemoteEndPoint : socket.LocalEndPoint;
 
-            context.Memory.Write(bufferPosition, BsdSockAddr.FromIPEndPoint(endPoint));
+            if (endPoint != null)
+            {
+                context.Memory.Write(bufferPosition, BsdSockAddr.FromIPEndPoint(endPoint));
+            }
+            else
+            {
+                context.Memory.Write(bufferPosition, new BsdSockAddr());
+            }
         }
 
         [CommandCmif(0)]

src/Ryujinx.Headless.SDL2/Program.cs

@@ -61,7 +61,7 @@ namespace Ryujinx.Headless.SDL2
 
         static void Main(string[] args)
         {
-            Version = ReleaseInformation.GetVersion();
+            Version = ReleaseInformation.Version;
 
             // Make process DPI aware for proper window sizing on high-res screens.
             ForceDpiAware.Windows();
@@ -427,11 +427,26 @@ namespace Ryujinx.Headless.SDL2
 
             if (!option.DisableFileLog)
             {
-                Logger.AddTarget(new AsyncLogTargetWrapper(
-                    new FileLogTarget(ReleaseInformation.GetBaseApplicationDirectory(), "file"),
-                    1000,
-                    AsyncLogTargetOverflowAction.Block
-                ));
+                FileStream logFile = FileLogTarget.PrepareLogFile(AppDomain.CurrentDomain.BaseDirectory);
+
+                if (logFile == null)
+                {
+                    logFile = FileLogTarget.PrepareLogFile(AppDataManager.BaseDirPath);
+
+                    if (logFile == null)
+                    {
+                        Logger.Error?.Print(LogClass.Application, "No writable log directory available. Make sure either the application directory or the Ryujinx directory is writable.");
+                    }
+                }
+
+                if (logFile != null)
+                {
+                    Logger.AddTarget(new AsyncLogTargetWrapper(
+                        new FileLogTarget("file", logFile),
+                        1000,
+                        AsyncLogTargetOverflowAction.Block
+                    ));
+                }
             }
 
             // Setup graphics configuration

src/Ryujinx.Horizon/Friends/FriendsIpcServer.cs

@@ -0,0 +1,49 @@
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using Ryujinx.Horizon.Sdk.Sm;
+
+namespace Ryujinx.Horizon.Friends
+{
+    class FriendsIpcServer
+    {
+        private const int MaxSessionsCount = 8;
+        private const int TotalMaxSessionsCount = MaxSessionsCount * 5;
+
+        private const int PointerBufferSize = 0xA00;
+        private const int MaxDomains = 64;
+        private const int MaxDomainObjects = 16;
+        private const int MaxPortsCount = 5;
+
+        private static readonly ManagerOptions _managerOptions = new(PointerBufferSize, MaxDomains, MaxDomainObjects, false);
+
+        private SmApi _sm;
+        private FriendsServerManager _serverManager;
+
+        public void Initialize()
+        {
+            HeapAllocator allocator = new();
+
+            _sm = new SmApi();
+            _sm.Initialize().AbortOnFailure();
+
+            _serverManager = new FriendsServerManager(allocator, _sm, MaxPortsCount, _managerOptions, TotalMaxSessionsCount);
+
+#pragma warning disable IDE0055 // Disable formatting
+            _serverManager.RegisterServer((int)FriendsPortIndex.Admin,   ServiceName.Encode("friend:a"), MaxSessionsCount);
+            _serverManager.RegisterServer((int)FriendsPortIndex.User,    ServiceName.Encode("friend:u"), MaxSessionsCount);
+            _serverManager.RegisterServer((int)FriendsPortIndex.Viewer,  ServiceName.Encode("friend:v"), MaxSessionsCount);
+            _serverManager.RegisterServer((int)FriendsPortIndex.Manager, ServiceName.Encode("friend:m"), MaxSessionsCount);
+            _serverManager.RegisterServer((int)FriendsPortIndex.System,  ServiceName.Encode("friend:s"), MaxSessionsCount);
+#pragma warning restore IDE0055
+        }
+
+        public void ServiceRequests()
+        {
+            _serverManager.ServiceRequests();
+        }
+
+        public void Shutdown()
+        {
+            _serverManager.Dispose();
+        }
+    }
+}

src/Ryujinx.Horizon/Friends/FriendsMain.cs

@@ -0,0 +1,17 @@
+namespace Ryujinx.Horizon.Friends
+{
+    class FriendsMain : IService
+    {
+        public static void Main(ServiceTable serviceTable)
+        {
+            FriendsIpcServer ipcServer = new();
+
+            ipcServer.Initialize();
+
+            serviceTable.SignalServiceReady();
+
+            ipcServer.ServiceRequests();
+            ipcServer.Shutdown();
+        }
+    }
+}

src/Ryujinx.Horizon/Friends/FriendsPortIndex.cs

@@ -0,0 +1,11 @@
+namespace Ryujinx.Horizon.Friends
+{
+    enum FriendsPortIndex
+    {
+        Admin,
+        User,
+        Viewer,
+        Manager,
+        System,
+    }
+}

src/Ryujinx.Horizon/Friends/FriendsServerManager.cs

@@ -0,0 +1,36 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Account;
+using Ryujinx.Horizon.Sdk.Friends.Detail.Ipc;
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using Ryujinx.Horizon.Sdk.Sm;
+using System;
+
+namespace Ryujinx.Horizon.Friends
+{
+    class FriendsServerManager : ServerManager
+    {
+        private readonly IEmulatorAccountManager _accountManager;
+        private readonly NotificationEventHandler _notificationEventHandler;
+
+        public FriendsServerManager(HeapAllocator allocator, SmApi sm, int maxPorts, ManagerOptions options, int maxSessions) : base(allocator, sm, maxPorts, options, maxSessions)
+        {
+            _accountManager = HorizonStatic.Options.AccountManager;
+            _notificationEventHandler = new();
+        }
+
+        protected override Result OnNeedsToAccept(int portIndex, Server server)
+        {
+            return (FriendsPortIndex)portIndex switch
+            {
+#pragma warning disable IDE0055 // Disable formatting
+                FriendsPortIndex.Admin   => AcceptImpl(server, new ServiceCreator(_accountManager, _notificationEventHandler, FriendsServicePermissionLevel.Admin)),
+                FriendsPortIndex.User    => AcceptImpl(server, new ServiceCreator(_accountManager, _notificationEventHandler, FriendsServicePermissionLevel.User)),
+                FriendsPortIndex.Viewer  => AcceptImpl(server, new ServiceCreator(_accountManager, _notificationEventHandler, FriendsServicePermissionLevel.Viewer)),
+                FriendsPortIndex.Manager => AcceptImpl(server, new ServiceCreator(_accountManager, _notificationEventHandler, FriendsServicePermissionLevel.Manager)),
+                FriendsPortIndex.System  => AcceptImpl(server, new ServiceCreator(_accountManager, _notificationEventHandler, FriendsServicePermissionLevel.System)),
+                _                        => throw new ArgumentOutOfRangeException(nameof(portIndex)),
+#pragma warning restore IDE0055
+            };
+        }
+    }
+}

src/Ryujinx.Horizon/HorizonOptions.cs

@@ -1,4 +1,5 @@
 using LibHac;
+using Ryujinx.Horizon.Sdk.Account;
 using Ryujinx.Horizon.Sdk.Fs;
 
 namespace Ryujinx.Horizon
@@ -10,13 +11,15 @@ namespace Ryujinx.Horizon
 
         public HorizonClient BcatClient { get; }
         public IFsClient FsClient { get; }
+        public IEmulatorAccountManager AccountManager { get; }
 
-        public HorizonOptions(bool ignoreMissingServices, HorizonClient bcatClient, IFsClient fsClient)
+        public HorizonOptions(bool ignoreMissingServices, HorizonClient bcatClient, IFsClient fsClient, IEmulatorAccountManager accountManager)
         {
             IgnoreMissingServices = ignoreMissingServices;
             ThrowOnInvalidCommandIds = true;
             BcatClient = bcatClient;
             FsClient = fsClient;
+            AccountManager = accountManager;
         }
     }
 }

src/Ryujinx.Horizon/Sdk/Account/IEmulatorAccountManager.cs

@@ -0,0 +1,8 @@
+namespace Ryujinx.Horizon.Sdk.Account
+{
+    public interface IEmulatorAccountManager
+    {
+        void OpenUserOnlinePlay(Uid userId);
+        void CloseUserOnlinePlay(Uid userId);
+    }
+}

src/Ryujinx.Horizon/Sdk/Account/NetworkServiceAccountId.cs

@@ -0,0 +1,20 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Account
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x8, Pack = 0x8)]
+    readonly record struct NetworkServiceAccountId
+    {
+        public readonly ulong Id;
+
+        public NetworkServiceAccountId(ulong id)
+        {
+            Id = id;
+        }
+
+        public override readonly string ToString()
+        {
+            return Id.ToString("x16");
+        }
+    }
+}

src/Ryujinx.Horizon/Sdk/Account/Nickname.cs

@@ -0,0 +1,29 @@
+using Ryujinx.Common.Memory;
+using System;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace Ryujinx.Horizon.Sdk.Account
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x21, Pack = 0x1)]
+    readonly struct Nickname
+    {
+        public readonly Array33<byte> Name;
+
+        public Nickname(in Array33<byte> name)
+        {
+            Name = name;
+        }
+
+        public override string ToString()
+        {
+            int length = ((ReadOnlySpan<byte>)Name.AsSpan()).IndexOf((byte)0);
+            if (length < 0)
+            {
+                length = 33;
+            }
+
+            return Encoding.UTF8.GetString(Name.AsSpan()[..length]);
+        }
+    }
+}

src/Ryujinx.Horizon/Sdk/Account/Uid.cs

@@ -6,16 +6,16 @@ using System.Runtime.InteropServices;
 namespace Ryujinx.Horizon.Sdk.Account
 {
     [StructLayout(LayoutKind.Sequential)]
-    readonly record struct Uid
+    public readonly record struct Uid
     {
-        public readonly long High;
-        public readonly long Low;
+        public readonly ulong High;
+        public readonly ulong Low;
 
         public bool IsNull => (Low | High) == 0;
 
         public static Uid Null => new(0, 0);
 
-        public Uid(long low, long high)
+        public Uid(ulong low, ulong high)
         {
             Low = low;
             High = high;
@@ -23,8 +23,8 @@ namespace Ryujinx.Horizon.Sdk.Account
 
         public Uid(byte[] bytes)
         {
-            High = BitConverter.ToInt64(bytes, 0);
-            Low = BitConverter.ToInt64(bytes, 8);
+            High = BitConverter.ToUInt64(bytes, 0);
+            Low = BitConverter.ToUInt64(bytes, 8);
         }
 
         public Uid(string hex)
@@ -34,8 +34,8 @@ namespace Ryujinx.Horizon.Sdk.Account
                 throw new ArgumentException("Invalid Hex value!", nameof(hex));
             }
 
-            Low = Convert.ToInt64(hex[16..], 16);
-            High = Convert.ToInt64(hex[..16], 16);
+            Low = Convert.ToUInt64(hex[16..], 16);
+            High = Convert.ToUInt64(hex[..16], 16);
         }
 
         public void Write(BinaryWriter binaryWriter)

src/Ryujinx.Horizon/Sdk/Friends/ApplicationInfo.cs

@@ -0,0 +1,12 @@
+using Ryujinx.Horizon.Sdk.Ncm;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x10, Pack = 0x8)]
+    struct ApplicationInfo
+    {
+        public ApplicationId ApplicationId;
+        public ulong PresenceGroupId;
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/BlockedUserImpl.cs

@@ -0,0 +1,8 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
+{
+    struct BlockedUserImpl
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/FriendCandidateImpl.cs

@@ -0,0 +1,8 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
+{
+    struct FriendCandidateImpl
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/FriendDetailedInfoImpl.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x800)]
+    struct FriendDetailedInfoImpl
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/FriendImpl.cs

@@ -0,0 +1,19 @@
+using Ryujinx.Common.Memory;
+using Ryujinx.Horizon.Sdk.Account;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x200, Pack = 0x8)]
+    struct FriendImpl
+    {
+        public Uid UserId;
+        public NetworkServiceAccountId NetworkUserId;
+        public Nickname Nickname;
+        public UserPresenceImpl Presence;
+        public bool IsFavourite;
+        public bool IsNew;
+        public Array6<byte> Unknown;
+        public bool IsValid;
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/FriendInvitationForViewerImpl.cs

@@ -0,0 +1,8 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
+{
+    struct FriendInvitationForViewerImpl
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/FriendInvitationGroupImpl.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x1400)]
+    struct FriendInvitationGroupImpl
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/FriendRequestImpl.cs

@@ -0,0 +1,8 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
+{
+    struct FriendRequestImpl
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/FriendSettingImpl.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x40)]
+    struct FriendSettingImpl
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/Ipc/DaemonSuspendSessionService.cs

@@ -0,0 +1,7 @@
+namespace Ryujinx.Horizon.Sdk.Friends.Detail.Ipc
+{
+    partial class DaemonSuspendSessionService : IDaemonSuspendSessionService
+    {
+        // NOTE: This service has no commands.
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/Ipc/FriendsServicePermissionLevel.cs

@@ -1,16 +1,13 @@
-using System;
-
-namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator
+namespace Ryujinx.Horizon.Sdk.Friends.Detail.Ipc
 {
-    [Flags]
-    enum FriendServicePermissionLevel
+    enum FriendsServicePermissionLevel
     {
         UserMask = 1,
         ViewerMask = 2,
         ManagerMask = 4,
         SystemMask = 8,
 
-        Administrator = -1,
+        Admin = -1,
         User = UserMask,
         Viewer = UserMask | ViewerMask,
         Manager = UserMask | ViewerMask | ManagerMask,

src/Ryujinx.Horizon/Sdk/Friends/Detail/Ipc/IDaemonSuspendSessionService.cs

@@ -0,0 +1,9 @@
+using Ryujinx.Horizon.Sdk.Sf;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail.Ipc
+{
+    interface IDaemonSuspendSessionService : IServiceObject
+    {
+        // NOTE: This service has no commands.
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/Ipc/IFriendService.cs

@@ -0,0 +1,97 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Account;
+using Ryujinx.Horizon.Sdk.Settings;
+using Ryujinx.Horizon.Sdk.Sf;
+using System;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail.Ipc
+{
+    interface IFriendService : IServiceObject
+    {
+        Result GetCompletionEvent(out int completionEventHandle);
+        Result Cancel();
+        Result GetFriendListIds(out int count, Span<NetworkServiceAccountId> friendIds, Uid userId, int offset, SizedFriendFilter filter, ulong pidPlaceholder, ulong pid);
+        Result GetFriendList(out int count, Span<FriendImpl> friendList, Uid userId, int offset, SizedFriendFilter filter, ulong pidPlaceholder, ulong pid);
+        Result UpdateFriendInfo(Span<FriendImpl> info, Uid userId, ReadOnlySpan<NetworkServiceAccountId> friendIds, ulong pidPlaceholder, ulong pid);
+        Result GetFriendProfileImage(out int size, Uid userId, NetworkServiceAccountId friendId, Span<byte> profileImage);
+        Result CheckFriendListAvailability(out bool listAvailable, Uid userId);
+        Result EnsureFriendListAvailable(Uid userId);
+        Result SendFriendRequestForApplication(Uid userId, NetworkServiceAccountId friendId, in InAppScreenName arg2, in InAppScreenName arg3, ulong pidPlaceholder, ulong pid);
+        Result AddFacedFriendRequestForApplication(Uid userId, FacedFriendRequestRegistrationKey key, Nickname nickname, ReadOnlySpan<byte> arg3, in InAppScreenName arg4, in InAppScreenName arg5, ulong pidPlaceholder, ulong pid);
+        Result GetBlockedUserListIds(out int count, Span<NetworkServiceAccountId> blockedIds, Uid userId, int offset);
+        Result CheckBlockedUserListAvailability(out bool listAvailable, Uid userId);
+        Result EnsureBlockedUserListAvailable(Uid userId);
+        Result GetProfileList(Span<ProfileImpl> profileList, Uid userId, ReadOnlySpan<NetworkServiceAccountId> friendIds);
+        Result DeclareOpenOnlinePlaySession(Uid userId);
+        Result DeclareCloseOnlinePlaySession(Uid userId);
+        Result UpdateUserPresence(Uid userId, in UserPresenceImpl userPresence, ulong pidPlaceholder, ulong pid);
+        Result GetPlayHistoryRegistrationKey(out PlayHistoryRegistrationKey registrationKey, Uid userId, bool arg2);
+        Result GetPlayHistoryRegistrationKeyWithNetworkServiceAccountId(out PlayHistoryRegistrationKey registrationKey, NetworkServiceAccountId friendId, bool arg2);
+        Result AddPlayHistory(Uid userId, in PlayHistoryRegistrationKey registrationKey, in InAppScreenName arg2, in InAppScreenName arg3, ulong pidPlaceholder, ulong pid);
+        Result GetProfileImageUrl(out Url imageUrl, Url url, int arg2);
+        Result GetFriendCount(out int count, Uid userId, SizedFriendFilter filter, ulong pidPlaceholder, ulong pid);
+        Result GetNewlyFriendCount(out int count, Uid userId);
+        Result GetFriendDetailedInfo(out FriendDetailedInfoImpl detailedInfo, Uid userId, NetworkServiceAccountId friendId);
+        Result SyncFriendList(Uid userId);
+        Result RequestSyncFriendList(Uid userId);
+        Result LoadFriendSetting(out FriendSettingImpl friendSetting, Uid userId, NetworkServiceAccountId friendId);
+        Result GetReceivedFriendRequestCount(out int count, out int count2, Uid userId);
+        Result GetFriendRequestList(out int count, Span<FriendRequestImpl> requestList, Uid userId, int arg3, int arg4);
+        Result GetFriendCandidateList(out int count, Span<FriendCandidateImpl> candidateList, Uid userId, int arg3);
+        Result GetNintendoNetworkIdInfo(out NintendoNetworkIdUserInfo networkIdInfo, out int arg1, Span<NintendoNetworkIdFriendImpl> friendInfo, Uid userId, int arg4);
+        Result GetSnsAccountLinkage(out SnsAccountLinkage accountLinkage, Uid userId);
+        Result GetSnsAccountProfile(out SnsAccountProfile accountProfile, Uid userId, NetworkServiceAccountId friendId, int arg3);
+        Result GetSnsAccountFriendList(out int count, Span<SnsAccountFriendImpl> friendList, Uid userId, int arg3);
+        Result GetBlockedUserList(out int count, Span<BlockedUserImpl> blockedUsers, Uid userId, int arg3);
+        Result SyncBlockedUserList(Uid userId);
+        Result GetProfileExtraList(Span<ProfileExtraImpl> extraList, Uid userId, ReadOnlySpan<NetworkServiceAccountId> friendIds);
+        Result GetRelationship(out Relationship relationship, Uid userId, NetworkServiceAccountId friendId);
+        Result GetUserPresenceView(out UserPresenceViewImpl userPresenceView, Uid userId);
+        Result GetPlayHistoryList(out int count, Span<PlayHistoryImpl> playHistoryList, Uid userId, int arg3);
+        Result GetPlayHistoryStatistics(out PlayHistoryStatistics statistics, Uid userId);
+        Result LoadUserSetting(out UserSettingImpl userSetting, Uid userId);
+        Result SyncUserSetting(Uid userId);
+        Result RequestListSummaryOverlayNotification();
+        Result GetExternalApplicationCatalog(out ExternalApplicationCatalog catalog, ExternalApplicationCatalogId catalogId, LanguageCode language);
+        Result GetReceivedFriendInvitationList(out int count, Span<FriendInvitationForViewerImpl> invitationList, Uid userId);
+        Result GetReceivedFriendInvitationDetailedInfo(out FriendInvitationGroupImpl invicationGroup, Uid userId, FriendInvitationGroupId groupId);
+        Result GetReceivedFriendInvitationCountCache(out int count, Uid userId);
+        Result DropFriendNewlyFlags(Uid userId);
+        Result DeleteFriend(Uid userId, NetworkServiceAccountId friendId);
+        Result DropFriendNewlyFlag(Uid userId, NetworkServiceAccountId friendId);
+        Result ChangeFriendFavoriteFlag(Uid userId, NetworkServiceAccountId friendId, bool favoriteFlag);
+        Result ChangeFriendOnlineNotificationFlag(Uid userId, NetworkServiceAccountId friendId, bool onlineNotificationFlag);
+        Result SendFriendRequest(Uid userId, NetworkServiceAccountId friendId, int arg2);
+        Result SendFriendRequestWithApplicationInfo(Uid userId, NetworkServiceAccountId friendId, int arg2, ApplicationInfo applicationInfo, in InAppScreenName arg4, in InAppScreenName arg5);
+        Result CancelFriendRequest(Uid userId, RequestId requestId);
+        Result AcceptFriendRequest(Uid userId, RequestId requestId);
+        Result RejectFriendRequest(Uid userId, RequestId requestId);
+        Result ReadFriendRequest(Uid userId, RequestId requestId);
+        Result GetFacedFriendRequestRegistrationKey(out FacedFriendRequestRegistrationKey registrationKey, Uid userId);
+        Result AddFacedFriendRequest(Uid userId, FacedFriendRequestRegistrationKey registrationKey, Nickname nickname, ReadOnlySpan<byte> arg3);
+        Result CancelFacedFriendRequest(Uid userId, NetworkServiceAccountId friendId);
+        Result GetFacedFriendRequestProfileImage(out int size, Uid userId, NetworkServiceAccountId friendId, Span<byte> profileImage);
+        Result GetFacedFriendRequestProfileImageFromPath(out int size, ReadOnlySpan<byte> path, Span<byte> profileImage);
+        Result SendFriendRequestWithExternalApplicationCatalogId(Uid userId, NetworkServiceAccountId friendId, int arg2, ExternalApplicationCatalogId catalogId, in InAppScreenName arg4, in InAppScreenName arg5);
+        Result ResendFacedFriendRequest(Uid userId, NetworkServiceAccountId friendId);
+        Result SendFriendRequestWithNintendoNetworkIdInfo(Uid userId, NetworkServiceAccountId friendId, int arg2, MiiName arg3, MiiImageUrlParam arg4, MiiName arg5, MiiImageUrlParam arg6);
+        Result GetSnsAccountLinkPageUrl(out WebPageUrl url, Uid userId, int arg2);
+        Result UnlinkSnsAccount(Uid userId, int arg1);
+        Result BlockUser(Uid userId, NetworkServiceAccountId friendId, int arg2);
+        Result BlockUserWithApplicationInfo(Uid userId, NetworkServiceAccountId friendId, int arg2, ApplicationInfo applicationInfo, in InAppScreenName arg4);
+        Result UnblockUser(Uid userId, NetworkServiceAccountId friendId);
+        Result GetProfileExtraFromFriendCode(out ProfileExtraImpl profileExtra, Uid userId, FriendCode friendCode);
+        Result DeletePlayHistory(Uid userId);
+        Result ChangePresencePermission(Uid userId, int permission);
+        Result ChangeFriendRequestReception(Uid userId, bool reception);
+        Result ChangePlayLogPermission(Uid userId, int permission);
+        Result IssueFriendCode(Uid userId);
+        Result ClearPlayLog(Uid userId);
+        Result SendFriendInvitation(Uid userId, ReadOnlySpan<NetworkServiceAccountId> friendIds, in FriendInvitationGameModeDescription description, ApplicationInfo applicationInfo, ReadOnlySpan<byte> arg4, bool arg5);
+        Result ReadFriendInvitation(Uid userId, ReadOnlySpan<FriendInvitationId> invitationIds);
+        Result ReadAllFriendInvitations(Uid userId);
+        Result DeleteFriendListCache(Uid userId);
+        Result DeleteBlockedUserListCache(Uid userId);
+        Result DeleteNetworkServiceAccountCache(Uid userId);
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/Ipc/INotificationService.cs

@@ -0,0 +1,12 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Sf;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail.Ipc
+{
+    interface INotificationService : IServiceObject
+    {
+        Result GetEvent(out int eventHandle);
+        Result Clear();
+        Result Pop(out SizedNotificationInfo sizedNotificationInfo);
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/Ipc/IServiceCreator.cs

@@ -0,0 +1,13 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Account;
+using Ryujinx.Horizon.Sdk.Sf;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail.Ipc
+{
+    interface IServiceCreator : IServiceObject
+    {
+        Result CreateFriendService(out IFriendService friendService);
+        Result CreateNotificationService(out INotificationService notificationService, Uid userId);
+        Result CreateDaemonSuspendSessionService(out IDaemonSuspendSessionService daemonSuspendSessionService);
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/Ipc/NotificationEventHandler.cs

@@ -0,0 +1,58 @@
+using Ryujinx.Horizon.Sdk.Account;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail.Ipc
+{
+    sealed class NotificationEventHandler
+    {
+        private readonly NotificationService[] _registry;
+
+        public NotificationEventHandler()
+        {
+            _registry = new NotificationService[0x20];
+        }
+
+        public void RegisterNotificationService(NotificationService service)
+        {
+            // NOTE: When there's no enough space in the registry array, Nintendo doesn't return any errors.
+            for (int i = 0; i < _registry.Length; i++)
+            {
+                if (_registry[i] == null)
+                {
+                    _registry[i] = service;
+                    break;
+                }
+            }
+        }
+
+        public void UnregisterNotificationService(NotificationService service)
+        {
+            // NOTE: When there's no enough space in the registry array, Nintendo doesn't return any errors.
+            for (int i = 0; i < _registry.Length; i++)
+            {
+                if (_registry[i] == service)
+                {
+                    _registry[i] = null;
+                    break;
+                }
+            }
+        }
+
+        // TODO: Use this when we have enough things to go online.
+        public void SignalFriendListUpdate(Uid targetId)
+        {
+            for (int i = 0; i < _registry.Length; i++)
+            {
+                _registry[i]?.SignalFriendListUpdate(targetId);
+            }
+        }
+
+        // TODO: Use this when we have enough things to go online.
+        public void SignalNewFriendRequest(Uid targetId)
+        {
+            for (int i = 0; i < _registry.Length; i++)
+            {
+                _registry[i]?.SignalNewFriendRequest(targetId);
+            }
+        }
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/Ipc/NotificationEventType.cs

@@ -1,4 +1,4 @@
-namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.NotificationService
+namespace Ryujinx.Horizon.Sdk.Friends.Detail.Ipc
 {
     enum NotificationEventType : uint
     {

src/Ryujinx.Horizon/Sdk/Friends/Detail/Ipc/NotificationService.cs

@@ -0,0 +1,172 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Account;
+using Ryujinx.Horizon.Sdk.OsTypes;
+using Ryujinx.Horizon.Sdk.Sf;
+using System;
+using System.Collections.Generic;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail.Ipc
+{
+    partial class NotificationService : INotificationService, IDisposable
+    {
+        private readonly NotificationEventHandler _notificationEventHandler;
+        private readonly Uid _userId;
+        private readonly FriendsServicePermissionLevel _permissionLevel;
+
+        private readonly object _lock = new();
+
+        private SystemEventType _notificationEvent;
+
+        private readonly LinkedList<SizedNotificationInfo> _notifications;
+
+        private bool _hasNewFriendRequest;
+        private bool _hasFriendListUpdate;
+
+        public NotificationService(NotificationEventHandler notificationEventHandler, Uid userId, FriendsServicePermissionLevel permissionLevel)
+        {
+            _notificationEventHandler = notificationEventHandler;
+            _userId = userId;
+            _permissionLevel = permissionLevel;
+            _notifications = new LinkedList<SizedNotificationInfo>();
+            Os.CreateSystemEvent(out _notificationEvent, EventClearMode.AutoClear, interProcess: true).AbortOnFailure();
+
+            _hasNewFriendRequest = false;
+            _hasFriendListUpdate = false;
+
+            notificationEventHandler.RegisterNotificationService(this);
+        }
+
+        [CmifCommand(0)]
+        public Result GetEvent([CopyHandle] out int eventHandle)
+        {
+            eventHandle = Os.GetReadableHandleOfSystemEvent(ref _notificationEvent);
+
+            return Result.Success;
+        }
+
+        [CmifCommand(1)]
+        public Result Clear()
+        {
+            lock (_lock)
+            {
+                _hasNewFriendRequest = false;
+                _hasFriendListUpdate = false;
+
+                _notifications.Clear();
+            }
+
+            return Result.Success;
+        }
+
+        [CmifCommand(2)]
+        public Result Pop(out SizedNotificationInfo sizedNotificationInfo)
+        {
+            lock (_lock)
+            {
+                if (_notifications.Count >= 1)
+                {
+                    sizedNotificationInfo = _notifications.First.Value;
+                    _notifications.RemoveFirst();
+
+                    if (sizedNotificationInfo.Type == NotificationEventType.FriendListUpdate)
+                    {
+                        _hasFriendListUpdate = false;
+                    }
+                    else if (sizedNotificationInfo.Type == NotificationEventType.NewFriendRequest)
+                    {
+                        _hasNewFriendRequest = false;
+                    }
+
+                    return Result.Success;
+                }
+            }
+
+            sizedNotificationInfo = default;
+
+            return FriendResult.NotificationQueueEmpty;
+        }
+
+        public void SignalFriendListUpdate(Uid targetId)
+        {
+            lock (_lock)
+            {
+                if (_userId == targetId)
+                {
+                    if (!_hasFriendListUpdate)
+                    {
+                        SizedNotificationInfo friendListNotification = new();
+
+                        if (_notifications.Count != 0)
+                        {
+                            friendListNotification = _notifications.First.Value;
+                            _notifications.RemoveFirst();
+                        }
+
+                        friendListNotification.Type = NotificationEventType.FriendListUpdate;
+                        _hasFriendListUpdate = true;
+
+                        if (_hasNewFriendRequest)
+                        {
+                            SizedNotificationInfo newFriendRequestNotification = new();
+
+                            if (_notifications.Count != 0)
+                            {
+                                newFriendRequestNotification = _notifications.First.Value;
+                                _notifications.RemoveFirst();
+                            }
+
+                            newFriendRequestNotification.Type = NotificationEventType.NewFriendRequest;
+                            _notifications.AddFirst(newFriendRequestNotification);
+                        }
+
+                        // We defer this to make sure we are on top of the queue.
+                        _notifications.AddFirst(friendListNotification);
+                    }
+
+                    Os.SignalSystemEvent(ref _notificationEvent);
+                }
+            }
+        }
+
+        public void SignalNewFriendRequest(Uid targetId)
+        {
+            lock (_lock)
+            {
+                if (_permissionLevel.HasFlag(FriendsServicePermissionLevel.ViewerMask) && _userId == targetId)
+                {
+                    if (!_hasNewFriendRequest)
+                    {
+                        if (_notifications.Count == 100)
+                        {
+                            SignalFriendListUpdate(targetId);
+                        }
+
+                        SizedNotificationInfo newFriendRequestNotification = new()
+                        {
+                            Type = NotificationEventType.NewFriendRequest,
+                        };
+
+                        _notifications.AddLast(newFriendRequestNotification);
+                        _hasNewFriendRequest = true;
+                    }
+
+                    Os.SignalSystemEvent(ref _notificationEvent);
+                }
+            }
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                _notificationEventHandler.UnregisterNotificationService(this);
+            }
+        }
+
+        public void Dispose()
+        {
+            Dispose(disposing: true);
+            GC.SuppressFinalize(this);
+        }
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/Ipc/PresenceStatusFilter.cs

@@ -1,4 +1,4 @@
-namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.FriendService
+namespace Ryujinx.Horizon.Sdk.Friends.Detail.Ipc
 {
     enum PresenceStatusFilter : uint
     {

src/Ryujinx.Horizon/Sdk/Friends/Detail/Ipc/ServiceCreator.cs

@@ -0,0 +1,51 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Account;
+using Ryujinx.Horizon.Sdk.Sf;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail.Ipc
+{
+    partial class ServiceCreator : IServiceCreator
+    {
+        private readonly IEmulatorAccountManager _accountManager;
+        private readonly NotificationEventHandler _notificationEventHandler;
+        private readonly FriendsServicePermissionLevel _permissionLevel;
+
+        public ServiceCreator(IEmulatorAccountManager accountManager, NotificationEventHandler notificationEventHandler, FriendsServicePermissionLevel permissionLevel)
+        {
+            _accountManager = accountManager;
+            _notificationEventHandler = notificationEventHandler;
+            _permissionLevel = permissionLevel;
+        }
+
+        [CmifCommand(0)]
+        public Result CreateFriendService(out IFriendService friendService)
+        {
+            friendService = new FriendService(_accountManager, _permissionLevel);
+
+            return Result.Success;
+        }
+
+        [CmifCommand(1)] // 2.0.0+
+        public Result CreateNotificationService(out INotificationService notificationService, Uid userId)
+        {
+            if (userId.IsNull)
+            {
+                notificationService = null;
+
+                return FriendResult.InvalidArgument;
+            }
+
+            notificationService = new NotificationService(_notificationEventHandler, userId, _permissionLevel);
+
+            return Result.Success;
+        }
+
+        [CmifCommand(2)] // 4.0.0+
+        public Result CreateDaemonSuspendSessionService(out IDaemonSuspendSessionService daemonSuspendSessionService)
+        {
+            daemonSuspendSessionService = new DaemonSuspendSessionService();
+
+            return Result.Success;
+        }
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/Ipc/SizedFriendFilter.cs

@@ -0,0 +1,25 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail.Ipc
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x10, Pack = 0x8)]
+    struct SizedFriendFilter
+    {
+        public PresenceStatusFilter PresenceStatus;
+        public bool IsFavoriteOnly;
+        public bool IsSameAppPresenceOnly;
+        public bool IsSameAppPlayedOnly;
+        public bool IsArbitraryAppPlayedOnly;
+        public ulong PresenceGroupId;
+
+        public readonly override string ToString()
+        {
+            return $"{{ PresenceStatus: {PresenceStatus}, " +
+                $"IsFavoriteOnly: {IsFavoriteOnly}, " +
+                $"IsSameAppPresenceOnly: {IsSameAppPresenceOnly}, " +
+                $"IsSameAppPlayedOnly: {IsSameAppPlayedOnly}, " +
+                $"IsArbitraryAppPlayedOnly: {IsArbitraryAppPlayedOnly}, " +
+                $"PresenceGroupId: {PresenceGroupId} }}";
+        }
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/Ipc/SizedNotificationInfo.cs

@@ -0,0 +1,13 @@
+using Ryujinx.Horizon.Sdk.Account;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail.Ipc
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x10, Pack = 0x8)]
+    struct SizedNotificationInfo
+    {
+        public NotificationEventType Type;
+        public uint Padding;
+        public NetworkServiceAccountId NetworkUserIdPlaceholder;
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/NintendoNetworkIdFriendImpl.cs

@@ -0,0 +1,8 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
+{
+    struct NintendoNetworkIdFriendImpl
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/PlayHistoryImpl.cs

@@ -0,0 +1,8 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
+{
+    struct PlayHistoryImpl
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/PresenceStatus.cs

@@ -1,4 +1,4 @@
-namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.FriendService
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
 {
     enum PresenceStatus : uint
     {

src/Ryujinx.Horizon/Sdk/Friends/Detail/ProfileExtraImpl.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x400)]
+    struct ProfileExtraImpl
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/ProfileImpl.cs

@@ -0,0 +1,8 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
+{
+    struct ProfileImpl
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/SnsAccountFriendImpl.cs

@@ -0,0 +1,8 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
+{
+    struct SnsAccountFriendImpl
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/UserPresenceImpl.cs

@@ -0,0 +1,29 @@
+using Ryujinx.Common.Memory;
+using Ryujinx.Horizon.Sdk.Account;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0xE0)]
+    struct UserPresenceImpl
+    {
+        public Uid UserId;
+        public long LastTimeOnlineTimestamp;
+        public PresenceStatus Status;
+        public bool SamePresenceGroupApplication;
+        public Array3<byte> Unknown;
+        public AppKeyValueStorageHolder AppKeyValueStorage;
+
+        [InlineArray(0xC0)]
+        public struct AppKeyValueStorageHolder
+        {
+            public byte Value;
+        }
+
+        public readonly override string ToString()
+        {
+            return $"{{ UserId: {UserId}, LastTimeOnlineTimestamp: {LastTimeOnlineTimestamp}, Status: {Status} }}";
+        }
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/UserPresenceViewImpl.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0xE0)]
+    struct UserPresenceViewImpl
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Detail/UserSettingImpl.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends.Detail
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x800)]
+    struct UserSettingImpl
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/ExternalApplicationCatalog.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x4B8)]
+    struct ExternalApplicationCatalog
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/ExternalApplicationCatalogId.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x10, Pack = 0x8)]
+    struct ExternalApplicationCatalogId
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/FacedFriendRequestRegistrationKey.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x40, Pack = 0x1)]
+    struct FacedFriendRequestRegistrationKey
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/FriendCode.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x20, Pack = 0x1)]
+    struct FriendCode
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/FriendInvitationGameModeDescription.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0xC00)]
+    struct FriendInvitationGameModeDescription
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/FriendInvitationGroupId.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x8, Pack = 0x8)]
+    struct FriendInvitationGroupId
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/FriendInvitationId.cs

@@ -0,0 +1,8 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    struct FriendInvitationId
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/FriendResult.cs

@@ -0,0 +1,13 @@
+using Ryujinx.Horizon.Common;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    static class FriendResult
+    {
+        private const int ModuleId = 121;
+
+        public static Result InvalidArgument => new(ModuleId, 2);
+        public static Result InternetRequestDenied => new(ModuleId, 6);
+        public static Result NotificationQueueEmpty => new(ModuleId, 15);
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/InAppScreenName.cs

@@ -0,0 +1,26 @@
+using Ryujinx.Common.Memory;
+using Ryujinx.Horizon.Sdk.Settings;
+using System;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x48)]
+    struct InAppScreenName
+    {
+        public Array64<byte> Name;
+        public LanguageCode LanguageCode;
+
+        public override readonly string ToString()
+        {
+            int length = Name.AsSpan().IndexOf((byte)0);
+            if (length < 0)
+            {
+                length = 64;
+            }
+
+            return Encoding.UTF8.GetString(Name.AsSpan()[..length]);
+        }
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/MiiImageUrlParam.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x10, Pack = 0x1)]
+    struct MiiImageUrlParam
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/MiiName.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x20, Pack = 0x1)]
+    struct MiiName
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/NintendoNetworkIdUserInfo.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x38)]
+    struct NintendoNetworkIdUserInfo
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/PlayHistoryRegistrationKey.cs

@@ -1,9 +1,10 @@
 using Ryujinx.Common.Memory;
+using Ryujinx.Horizon.Sdk.Account;
 using System.Runtime.InteropServices;
 
-namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator
+namespace Ryujinx.Horizon.Sdk.Friends
 {
-    [StructLayout(LayoutKind.Sequential, Size = 0x20)]
+    [StructLayout(LayoutKind.Sequential, Size = 0x40)]
     struct PlayHistoryRegistrationKey
     {
         public ushort Type;
@@ -11,6 +12,7 @@ namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator
         public byte UserIdBool;
         public byte UnknownBool;
         public Array11<byte> Reserved;
-        public Array16<byte> Uuid;
+        public Uid Uuid;
+        public Array32<byte> HmacHash;
     }
 }

src/Ryujinx.Horizon/Sdk/Friends/PlayHistoryStatistics.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x10, Pack = 0x8)]
+    struct PlayHistoryStatistics
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Relationship.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x8, Pack = 0x1)]
+    struct Relationship
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/RequestId.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x8, Pack = 0x8)]
+    struct RequestId
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/SnsAccountLinkage.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x8, Pack = 0x1)]
+    struct SnsAccountLinkage
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/SnsAccountProfile.cs

@@ -0,0 +1,9 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0x380)]
+    struct SnsAccountProfile
+    {
+    }
+}

src/Ryujinx.Horizon/Sdk/Friends/Url.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace Ryujinx.Horizon.Sdk.Friends
+{
+    [StructLayout(LayoutKind.Sequential, Size = 0xA0, Pack = 0x1)]
+    struct Url
+    {
+        public UrlStorage Path;
+
+        [InlineArray(0xA0)]
+        public struct UrlStorage
+        {
+            public byte Value;
+        }
+
+        public override readonly string ToString()
+        {
+            int length = ((ReadOnlySpan<byte>)Path).IndexOf((byte)0);
+            if (length < 0)
+            {
+                length = 33;
+            }
+
+            return Encoding.UTF8.GetString(((ReadOnlySpan<byte>)Path)[..length]);
+        }
+    }
+}