Bug 81603 [Import/Export] tar import/export does not preserve file permissions
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/wizards/datatransfer/ImportOperation.java
errorTable.add(new Status(IStatus.INFO,
                            PlatformUI.PLUGIN_ID, 0, DataTransferMessages
                                    .getString("ImportOperation.cannotCopy"), 
                            null));
                    continue;
                }
                source = sourcePath.toFile();
            }
            importRecursivelyFrom(fileSystemObject, POLICY_DEFAULT);
        }
    }
    /**
     * Imports the specified file system container object into the workspace.
     * If the import fails, adds a status object to the list to be returned by
     * <code>getResult</code>.
     *
     * @param folderObject the file system container object to be imported
     * @param policy determines how the folder object and children are imported
     * @return the policy to use to import the folder's children
     */
    int importFolder(Object folderObject, int policy) {
        IContainer containerResource;
        try {
            containerResource = getDestinationContainerFor(folderObject);
        } catch (CoreException e) {
            errorTable.add(e.getStatus());
            return policy;
        }
        if (containerResource == null)
            return policy;