mirror of https://github.com/PaperMC/Paper.git
95 lines
4.5 KiB
Diff
95 lines
4.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Sun, 19 Dec 2021 09:13:41 -0800
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Subject: [PATCH] Only write chunk data to disk if it serializes without
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throwing
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This ensures at least a valid version of the chunk exists
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on disk, even if outdated
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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
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index 12b7d50f49a2184aaf220a4a50a137b217c57124..f1237f6fd6414900ffbad0caee31aa83310eeef4 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
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@@ -442,6 +442,7 @@ public class RegionFile implements AutoCloseable {
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}
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+ public static final int MAX_CHUNK_SIZE = 500 * 1024 * 1024; // Paper - don't write garbage data to disk if writing serialization fails
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private class ChunkBuffer extends ByteArrayOutputStream {
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private final ChunkPos pos;
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@@ -455,6 +456,23 @@ public class RegionFile implements AutoCloseable {
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super.write(RegionFile.this.version.getId());
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this.pos = chunkcoordintpair;
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}
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+ // Paper start - don't write garbage data to disk if writing serialization fails
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+ @Override
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+ public void write(final int b) {
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+ if (this.count > MAX_CHUNK_SIZE) {
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+ throw new RegionFileStorage.RegionFileSizeException("Region file too large: " + this.count);
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+ }
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+ super.write(b);
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+ }
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+
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+ @Override
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+ public void write(final byte[] b, final int off, final int len) {
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+ if (this.count + len > MAX_CHUNK_SIZE) {
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+ throw new RegionFileStorage.RegionFileSizeException("Region file too large: " + (this.count + len));
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+ }
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+ super.write(b, off, len);
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+ }
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+ // Paper end - don't write garbage data to disk if writing serialization fails
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public void close() throws IOException {
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ByteBuffer bytebuffer = ByteBuffer.wrap(this.buf, 0, this.count);
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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
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index 9748b798f55ee0cbfdce1a2b2c48700623ef17a5..c4eef3aade889c69cefd873bec2d031cc54103ea 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
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@@ -147,10 +147,17 @@ public class RegionFileStorage implements AutoCloseable {
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try {
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NbtIo.write(nbt, (DataOutput) dataoutputstream);
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+ // Paper start - don't write garbage data to disk if writing serialization fails
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+ dataoutputstream.close(); // Only write if successful
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+ } catch (final RegionFileSizeException e) {
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+ attempts = 5; // Don't retry
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+ regionfile.clear(pos);
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+ throw e;
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+ // Paper end - don't write garbage data to disk if writing serialization fails
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} catch (Throwable throwable) {
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if (dataoutputstream != null) {
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try {
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- dataoutputstream.close();
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+ //dataoutputstream.close(); // Paper - don't write garbage data to disk if writing serialization fails
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} catch (Throwable throwable1) {
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throwable.addSuppressed(throwable1);
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}
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@@ -158,10 +165,7 @@ public class RegionFileStorage implements AutoCloseable {
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throw throwable;
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}
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-
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- if (dataoutputstream != null) {
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- dataoutputstream.close();
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- }
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+ // Paper - don't write garbage data to disk if writing serialization fails; move into try block to only write if successfully serialized
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}
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// Paper start - Chunk save reattempt
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return;
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@@ -204,4 +208,13 @@ public class RegionFileStorage implements AutoCloseable {
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}
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}
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+
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+ // Paper start - don't write garbage data to disk if writing serialization fails
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+ public static final class RegionFileSizeException extends RuntimeException {
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+
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+ public RegionFileSizeException(String message) {
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+ super(message);
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+ }
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+ }
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+ // Paper end - don't write garbage data to disk if writing serialization fails
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}
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