<?php

/**
 * Implementation of hook_perm().
 */
function shared_account_perm() {
  return array('edit own user account');
}

/**
 * Implementation of hook_menu_alter().
 */
function shared_account_menu_alter(&$callbacks) {
  $callbacks['user/%user_category/edit']['access callback'] = 'shared_account_edit_access';
}

/**
 * Access callback for user account editing.
 */
function shared_account_edit_access($account) {
  return ((($GLOBALS['user']->uid == $account->uid) && user_access('edit own user account', $account)) || user_access('administer users')) && $account->uid > 0;
}