>&nbsp;len:int&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;unit<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;ftruncate&nbsp;:&nbsp;<span class="constructor">UnixLabels</span>.file_descr&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;len:int&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;unit<br>
&nbsp;&nbsp;<span class="keyword">type</span>&nbsp;file_kind&nbsp;=<br>
&nbsp;&nbsp;&nbsp;&nbsp;<span class="constructor">Unix</span>.file_kind&nbsp;=<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span 