>&nbsp;<span class="constructor">O_CLOEXEC</span><br>
&nbsp;&nbsp;&nbsp;&nbsp;<span class="keywordsign">|</span>&nbsp;<span class="constructor">O_KEEPEXEC</span><br>
&nbsp;&nbsp;<span class="keyword">type</span>&nbsp;file_perm&nbsp;=&nbsp;int<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;openfile&nbsp;:<br>
&nbsp;&nbsp;&nbsp;&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span><br>
&nbsp;&nbsp;&nbsp;&nbsp;mode:<span class="constructor">UnixLabels</span>.open_flag&nbsp;list&nbsp;<span class="keywo