Paper/patches/server/0776-Only-write-chunk-data-to-disk-if-it-serializes-witho.patch
Nassim Jahnke 928bcc8d3a
Updated Upstream (Bukkit/CraftBukkit) (#8430)
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:
09943450 Update SnakeYAML version
5515734f SPIGOT-7162: Incorrect description for Entity#getVehicle javadoc
6f82b381 PR-788: Add getHand() to all relevant events

CraftBukkit Changes:
aaf484f6f SPIGOT-7163: CraftMerchantRecipe doesn't copy demand and specialPrice from BukkitMerchantRecipe
5329dd6fd PR-1107: Add getHand() to all relevant events
93061706e SPIGOT-7045: Ocelots never spawn with babies with spawn reason OCELOT_BABY
2022-10-02 09:56:36 +02:00

98 lines
4.4 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on disk, even if outdated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..fc3442b4c7e1f22080fe6bf36d4fade162d6709e 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
@@ -1004,6 +1004,9 @@ public class RegionFile implements AutoCloseable {
}
}
+
+ public static final int MAX_CHUNK_SIZE = 500 * 1024 * 1024; // Paper - don't write garbage data to disk if writing serialization fails
+
// Paper end
private class ChunkBuffer extends ByteArrayOutputStream {
@@ -1019,6 +1022,24 @@ 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 > MAX_CHUNK_SIZE) {
+ 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 > MAX_CHUNK_SIZE) {
+ 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 e71a451a6b385716cc46db7350b58b4192304547..8db3bcc63aeb23e5b50864ebea675acc75d184ff 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
@@ -302,10 +302,17 @@ 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);
}
@@ -313,10 +320,7 @@ 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
return;
@@ -362,4 +366,13 @@ public class RegionFileStorage implements AutoCloseable {
}
}
+
+ // Paper start
+ public static final class RegionFileSizeException extends RuntimeException {
+
+ public RegionFileSizeException(String message) {
+ super(message);
+ }
+ }
+ // Paper end
}