title: setxattr fails with Operation not supported
body: <p>I am trying to set the file attributes as follows:</p>
  
  <ol>
  <li>create file foo.txt with 0644 permissions</li>
  <li><p>when I am trying to setxattr for this as</p>
  
  <pre><code>if (setxattr("foo.txt", "user.test", "test", 4, XATTR_CREATE) == -1)
      perror("");
  </code></pre></li>
  </ol>
  
  <p>I am getting the error as Operation not supported</p>
  
  <p>Is there any thing to enable?
  How to resolve this?</p>