PaperMC/patches/server/0814-Only-write-chunk-data-to-disk-if-it-serializes-witho.patch
Nassim Jahnke 18f0f8d1ca
Updated Upstream (Bukkit/CraftBukkit/Spigot)
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
312281ea PR-742: Make World implement Keyed

CraftBukkit Changes:
2ac7fa7a SPIGOT-7014: getLootTable API should not persistently update loot table
7fdd7941 PR-1046: Make World implement Keyed
7bc728a6 PR-1045: Revert changes to persistence required checks

Spigot Changes:
b6d12d17 Rebuild patches
2022-05-09 11:03:07 +02:00

87 lines
4.1 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sun, 19 Dec 2021 09:13:41 -0800
Subject: [PATCH] Only write chunk data to disk if it serializes without
throwing
This ensures at least a valid version of the chunk exists
on disk, even if outdated
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
index 8ff8855c5267379b3a5f5d8baa4a275ffee2c4bf..6704ae5c2ee01f8b319f4d425fe08c16d7b1b212 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
@@ -1019,6 +1019,24 @@ public class RegionFile implements AutoCloseable {
this.pos = chunkcoordintpair;
}
+ // Paper start - don't write garbage data to disk if writing serialization fails
+ @Override
+ public void write(final int b) {
+ if (this.count > 500_000_000) {
+ throw new RegionFileStorage.RegionFileSizeException("Region file too large: " + this.count);
+ }
+ super.write(b);
+ }
+
+ @Override
+ public void write(final byte[] b, final int off, final int len) {
+ if (this.count + len > 500_000_000) {
+ throw new RegionFileStorage.RegionFileSizeException("Region file too large: " + (this.count + len));
+ }
+ super.write(b, off, len);
+ }
+ // Paper end
+
public void close() throws IOException {
ByteBuffer bytebuffer = ByteBuffer.wrap(this.buf, 0, this.count);
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
index e5b444c6f2e45c50b4f7ab49c0dad801938f6cd9..303b70f0433ff49a3bee2a0d92c41f01aec38bee 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
@@ -298,10 +298,17 @@ public class RegionFileStorage implements AutoCloseable {
NbtIo.write(nbt, (DataOutput) dataoutputstream);
regionfile.setStatus(pos.x, pos.z, ChunkSerializer.getStatus(nbt)); // Paper - cache status on disk
regionfile.setOversized(pos.x, pos.z, false); // Paper - We don't do this anymore, mojang stores differently, but clear old meta flag if it exists to get rid of our own meta file once last oversized is gone
+ dataoutputstream.close(); // Paper - only write if successful
+ // Paper start - don't write garbage data to disk if writing serialization fails
+ } catch (RegionFileSizeException e) {
+ attempts = 5; // Don't retry
+ regionfile.clear(pos);
+ throw e;
+ // Paper end - don't write garbage data to disk if writing serialization fails
} catch (Throwable throwable) {
if (dataoutputstream != null) {
try {
- dataoutputstream.close();
+ //dataoutputstream.close(); // Paper - don't write garbage data to disk if writing serialization fails
} catch (Throwable throwable1) {
throwable.addSuppressed(throwable1);
}
@@ -309,10 +316,7 @@ public class RegionFileStorage implements AutoCloseable {
throw throwable;
}
-
- if (dataoutputstream != null) {
- dataoutputstream.close();
- }
+ // Paper - move into try block to only write if successfully serialized
}
// Paper start
@@ -359,4 +363,13 @@ public class RegionFileStorage implements AutoCloseable {
}
}
+
+ // Paper start
+ public static final class RegionFileSizeException extends RuntimeException {
+
+ public RegionFileSizeException(String message) {
+ super(message);
+ }
+ }
+ // Paper end
}