From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: mja00 <me@mja00.dev>
Date: Mon, 12 Aug 2024 06:27:15 -0400
Subject: [PATCH] Add skipping world symlink scan

In worlds that are extremely large (greater than 1TB), it can take an insanely long time to walk the entire world for symlinks.
This patch adds a system property to disable the symlink scan, which can be used to speed up world loading.

diff --git a/src/main/java/net/minecraft/world/level/storage/LevelStorageSource.java b/src/main/java/net/minecraft/world/level/storage/LevelStorageSource.java
index b5abdd1498a3d19559149c30ba959aa2bcf0246c..79397b3c76e4b9d2ee03dfa16c2daf4f71ae8b4d 100644
--- a/src/main/java/net/minecraft/world/level/storage/LevelStorageSource.java
+++ b/src/main/java/net/minecraft/world/level/storage/LevelStorageSource.java
@@ -411,7 +411,7 @@ public class LevelStorageSource {
 
     public LevelStorageSource.LevelStorageAccess validateAndCreateAccess(String s, ResourceKey<LevelStem> dimensionType) throws IOException, ContentValidationException { // CraftBukkit
         Path path = this.getLevelPath(s);
-        List<ForbiddenSymlinkInfo> list = this.worldDirValidator.validateDirectory(path, true);
+        List<ForbiddenSymlinkInfo> list = Boolean.getBoolean("paper.disableWorldSymlinkValidation") ? List.of() : this.worldDirValidator.validateDirectory(path, true); // Paper - add skipping of symlinks scan
 
         if (!list.isEmpty()) {
             throw new ContentValidationException(path, list);