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8356645: Javac should utilize new ZIP file system read-only access mode

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Reviewed-by: jlahoda
This commit is contained in:
David Beaumont 2025-08-06 08:55:47 +00:00 • committed by Jan Lahoda
parent 9dffbc9c4c
commit 0ceb366dc2
6 changed files with 73 additions and 31 deletions
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14
test/langtools/tools/javac/platform/VerifyCTSymClassFiles.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2024, 2025, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -23,10 +23,11 @@
/**
* @test
* @bug 8331027
* @bug 8331027 8356645
* @summary Verify classfile inside ct.sym
* @library /tools/lib
* @modules jdk.compiler/com.sun.tools.javac.api
* jdk.compiler/com.sun.tools.javac.file
* jdk.compiler/com.sun.tools.javac.main
* jdk.compiler/com.sun.tools.javac.platform
* jdk.compiler/com.sun.tools.javac.util:+open
@ -44,6 +45,7 @@ import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Map;
public class VerifyCTSymClassFiles {
@ -60,7 +62,13 @@ public class VerifyCTSymClassFiles {
//no ct.sym, nothing to check:
return ;
}
try (FileSystem fs = FileSystems.newFileSystem(ctSym)) {
// Expected to always be a ZIP filesystem.
Map<String, ?> env = Map.of("accessMode", "readOnly");
try (FileSystem fs = FileSystems.newFileSystem(ctSym, env)) {
// Check that the file system is read only (not true if not a zip file system).
if (!fs.isReadOnly()) {
throw new AssertionError("Expected read-only file system");
}
Files.walk(fs.getRootDirectories().iterator().next())
.filter(p -> Files.isRegularFile(p))
.forEach(p -> checkClassFile(p));