first import

sites/all/modules/node_clone/views/clone.views.inc

@@ -0,0 +1,14 @@
+<?php
+
+/**
+* Implements hook_views_data_alter()
+*/
+function clone_views_data_alter(&$views_data) {
+  $views_data['node']['clone_node'] = array(
+    'field' => array(
+      'title' => t('Clone link'),
+      'help' => t('Provide a simple link to clone the node.'),
+      'handler' => 'views_handler_field_node_link_clone',
+    ),
+  );
+}

sites/all/modules/node_clone/views/views_handler_field_node_link_clone.inc

@@ -0,0 +1,25 @@
+<?php
+
+/**
+* Field handler to present a clone node link.
+*
+* Closely modeled after views/modules/node/views_handler_field_node_link_edit.inc
+*/
+class views_handler_field_node_link_clone extends views_handler_field_node_link {
+  /**
+   * Renders the link.
+   */
+  function render_link($node, $values) {
+
+    if (!clone_access_cloning($node)) {
+      return;
+    }
+
+    $this->options['alter']['make_link'] = TRUE;
+    $this->options['alter']['path'] = "node/{$node->nid}/clone";
+    $this->options['alter']['query'] = drupal_get_destination();
+
+    $text = !empty($this->options['text']) ? $this->options['text'] : t('clone');
+    return $text;
+  }
+}