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8371689: (fs) CopyMoveHelper.copyToForeignTarget use of sourcePosixView is confusing #28304

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8371689: (fs) CopyMoveHelper.copyToForeignTarget use of sourcePosixView is confusing #28304

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fe0eeda
8371689: (fs) CopyMoveHelper.copyToForeignTarget use of sourcePosixVi…
bplb Nov 13, 2025
bebf4a5
8371689: Remove use of FileStore
bplb Nov 14, 2025
ad29084
8371689: Determine posix attributes support based on the view being r…
bplb Nov 14, 2025
e76d298
8371689: Simplify conditional
bplb Nov 14, 2025
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18 changes: 9 additions & 9 deletions src/java.base/share/classes/java/nio/file/CopyMoveHelper.java
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
/*
* Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2011, 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
Expand Down Expand Up @@ -109,21 +109,21 @@ static void copyToForeignTarget(Path source, Path target,
LinkOption[] linkOptions = (opts.followLinks) ? new LinkOption[0] :
new LinkOption[] { LinkOption.NOFOLLOW_LINKS };

// retrieve source posix view, null if unsupported
final PosixFileAttributeView sourcePosixView =
Files.getFileAttributeView(source, PosixFileAttributeView.class);
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@AlanBateman AlanBateman Nov 14, 2025

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I don't think we should delete this. Instead, I think we can initialize sourceSupportsPosixAttributes with Files.getFileAttributeView(source, PosixFileAttributeView.class) != null.

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@bplb bplb Nov 14, 2025

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I don't think we should delete this

So changed in ad29084.


// attributes of source file
boolean sourceSupportsPosixAttributes = false;
BasicFileAttributes sourceAttrs = null;
if (sourcePosixView != null) {
try {
sourceAttrs = Files.readAttributes(source,
PosixFileAttributes.class,
linkOptions);
}
if (sourceAttrs == null)
sourceSupportsPosixAttributes = true;
} catch (UnsupportedOperationException x) {
// posix attributes not supported
sourceAttrs = Files.readAttributes(source,
BasicFileAttributes.class,
linkOptions);
}

assert sourceAttrs != null;

if (sourceAttrs.isSymbolicLink())
Expand Down Expand Up @@ -151,7 +151,7 @@ else if (Files.exists(target))
// copy basic and, if supported, POSIX attributes to target
if (opts.copyAttributes) {
BasicFileAttributeView targetView = null;
if (sourcePosixView != null) {
if (sourceSupportsPosixAttributes) {
targetView = Files.getFileAttributeView(target,
PosixFileAttributeView.class);
}
Expand Down