Hello,<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The signature for openFD is<br><br>openFd: FilePath<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -&gt; OpenMode<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -&gt; Maybe FileMode<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -&gt; OpenFileFlags<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -&gt; IO Fd<br><br>I am currently reading <a href="http://www.haskell.org/ghc/docs/latest/html/libraries/unix/System-Posix-Files.html">http://www.haskell.org/ghc/docs/latest/html/libraries/unix/System-Posix-Files.html</a>&nbsp; and diving down into links but can&#39;t find the definition of data type FileMode. ??? Basically I want to open in O_RDONLY filemode.<br>
<br>Kind regards, Vasili<br>