//
// The visible files in this volume are symlinks to files in the writer's data
// directory.  Actual files are stored in a hidden timestamped directory which
// is symlinked to by the data directory. The timestamped directory and
// data directory symlink are created in the writer's target dir.  This scheme
// allows the files to be atomically updated by changing the target of the
// data directory symlink.
//

            def symlink = new File(baseDir, "symlink")
            def symlinked = new File(baseDir, "symlinked")
            def fileCollection = $code

            assert fileCollection.contains(file)
            assert fileCollection.contains(symlink)
            assert fileCollection.contains(symlinked)
            assert fileCollection.files == [file, symlink, symlinked] as Set

        new File(installedJdk, "jdk-123/file").exists()
    }

    @Ignore
    def "provisions jdk from tar.gz archive with MacOS symlinks"() {
        def jdkArchive = resources.getResource("jdk-with-symlinks.tar.gz")

	// that refer to directories, such as symlinks and mount points.
	// However, we follow symlink POSIX semantics and do not set the mode bits.
	// This allows users to walk directories without following links
	// by just calling "fi, err := os.Lstat(name); err == nil && fi.IsDir()".
	// Note that POSIX only defines the semantics for symlinks, not for
	// mount points or other surrogate reparse points, but we treat them

@CompileStatic
class UnitTestPreconditions {

    static final class Symlinks implements TestPrecondition {
        @Override
        boolean isSatisfied() {
            return satisfied(MacOs) || satisfied(Linux)
        }
    }

    static final class NoSymlinks implements TestPrecondition {
        @Override
        boolean isSatisfied() {
            return notSatisfied(Symlinks)
        }
    }

	// On some systems where we host-mount /etc/ssl/certs, it is also required to mount additional directories.
	// This is needed due to symlinks pointing from files in /etc/ssl/certs to these directories.
	for _, caCertsExtraVolumePath := range caCertsExtraVolumePaths {
		if isExtraVolumeMountNeeded(caCertsExtraVolumePath) {

		return &LinkError{"link", oldname, newname, err}
	}
	return nil
}

// Symlink creates newname as a symbolic link to oldname.
// On Windows, a symlink to a non-existent oldname creates a file symlink;
// if oldname is later created as a directory the symlink will not work.
// If there is an error, it will be of type *LinkError.
func Symlink(oldname, newname string) error {
	// '/' does not work in link's content

		}
		var wantType fs.FileMode
		if test.isMountPoint && winsymlink.Value() != "0" {
			// Mount points are reparse points, and we no longer treat them as symlinks.
			wantType = fs.ModeIrregular
		} else {
			// This is either a real symlink, or a mount point treated as a symlink.
			wantType = fs.ModeSymlink
		}
		if tp := fi2.Mode().Type(); tp != wantType {
			t.Errorf("Lstat(%q) is type %v; want %v", link, tp, wantType)
		}

set, and reparse points that are not symlinks, Unix sockets, or dedup files now
always have [`os.ModeIrregular`](/pkg/os#ModeIrregular) set. As a result of these changes,
[`filepath.EvalSymlinks`](/pkg/path/filepath#EvalSymlinks) no longer evaluates
mount points, which was a source of many inconsistencies and bugs.
At previous versions (`winsymlink=0`), mount points are treated as symlinks,

			continue
		}
		if fi.Mode().IsRegular() {
			return true, nil
		}

		// fi is the result of an Lstat, so it doesn't follow symlinks.
		// But it's okay if the file is a symlink pointing to a regular
		// file, so use os.Stat to follow symlinks and check that.
		actualFilePath, _ := OverlayPath(filepath.Join(dir, fi.Name()))
		fi, err := os.Stat(actualFilePath)
		if err == nil && fi.Mode().IsRegular() {