From 35d91a0e58cb0b2916b7a4f138c63fcc12b71112 Mon Sep 17 00:00:00 2001
From: TSRBerry <20988865+TSRBerry@users.noreply.github.com>
Date: Tue, 30 May 2023 01:48:37 +0200
Subject: Linux: Automatically increase vm.max_map_count if it's too low
(#4702)
* memory: Check results of pinvoke calls
* Increase vm.max_map_count when running Ryujinx
* Add SupportedOSPlatform attribute for WindowsApiException
* Revert increasing vm.max_map_count via script
* Add LinuxHelper to detect and increase vm.max_map_count
With GUI dialogs, this should be a bit more user-friendly.
* Supply arguments as a list to RunPkExec
* Add error logging in case RunPkExec() fails
* Prevent Gtk from crashing
---
src/Ryujinx.Ui.Common/Helper/LinuxHelper.cs | 62 +++++++++++++++++++++++++++++
1 file changed, 62 insertions(+)
create mode 100644 src/Ryujinx.Ui.Common/Helper/LinuxHelper.cs
(limited to 'src/Ryujinx.Ui.Common/Helper/LinuxHelper.cs')
diff --git a/src/Ryujinx.Ui.Common/Helper/LinuxHelper.cs b/src/Ryujinx.Ui.Common/Helper/LinuxHelper.cs
new file mode 100644
index 00000000..cfbf4b57
--- /dev/null
+++ b/src/Ryujinx.Ui.Common/Helper/LinuxHelper.cs
@@ -0,0 +1,62 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Runtime.Versioning;
+
+namespace Ryujinx.Ui.Common.Helper
+{
+ [SupportedOSPlatform("linux")]
+ public static class LinuxHelper
+ {
+ // NOTE: This value was determined by manual tests and might need to be increased again.
+ public const int RecommendedVmMaxMapCount = 524288;
+ public const string VmMaxMapCountPath = "/proc/sys/vm/max_map_count";
+ public const string SysCtlConfigPath = "/etc/sysctl.d/99-Ryujinx.conf";
+ public static int VmMaxMapCount => int.Parse(File.ReadAllText(VmMaxMapCountPath));
+ public static string PkExecPath { get; } = GetBinaryPath("pkexec");
+
+ private static string GetBinaryPath(string binary)
+ {
+ string pathVar = Environment.GetEnvironmentVariable("PATH");
+
+ if (pathVar is null || string.IsNullOrEmpty(binary))
+ {
+ return null;
+ }
+
+ foreach (var searchPath in pathVar.Split(":", StringSplitOptions.TrimEntries | StringSplitOptions.RemoveEmptyEntries))
+ {
+ string binaryPath = Path.Combine(searchPath, binary);
+
+ if (File.Exists(binaryPath))
+ {
+ return binaryPath;
+ }
+ }
+
+ return null;
+ }
+
+ public static int RunPkExec(string command)
+ {
+ if (PkExecPath == null)
+ {
+ return 1;
+ }
+
+ using Process process = new()
+ {
+ StartInfo =
+ {
+ FileName = PkExecPath,
+ ArgumentList = { "sh", "-c", command }
+ }
+ };
+
+ process.Start();
+ process.WaitForExit();
+
+ return process.ExitCode;
+ }
+ }
+}
\ No newline at end of file
--
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