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<title>s6: the s6-fdholder-storec program</title>
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<p>
<a href="index.html">s6</a><br />
<a href="http://skarnet.org/software/">Software</a><br />
<a href="http://skarnet.org/">skarnet.org</a>
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<h1> The <tt>s6-fdholder-storec</tt> program </h1>
<p>
<tt>s6-fdholder-storec</tt> talks to a
<a href="s6-fdholderd.html">fd-holding daemon</a> on its open
descriptors 6 and 7, and passes it a copy of its standard
input.
</p>
<h2> Interface </h2>
<pre>
s6-fdholder-storec [ -T fdtimeout ] [ -t <em>timeout</em> ] <em>id</em>
</pre>
<ul>
<li> s6-fdholder-storec expects to talk to a listening
<a href="s6-fdholderd.html">s6-fdholderd</a> program on its descriptors 6 and 7. </li>
<li> It attempts to pass a copy of its fd 0 (standard input) to s6-fdholderd,
with identifier <em>id</em>. </li>
<li> It then exits 0, or 1 if the server returned an error. </li>
</ul>
<h2> Options </h2>
<ul>
<li> <tt>-T <em>fdtimeout</em></tt> : the descriptor is stored with
an expiration time of <em>fdtimeout</em> milliseconds, which means the
<a href="s6-fdholderd.html">s6-fdholderd</a> daemon will close and get rid of
the descriptor after that time. By default, <em>fdtimeout</em> is 0, which
means infinite - no expiration time. </li>
<li> <tt>-t <em>timeout</em></tt> : if the operation cannot be
processed in <em>timeout</em> milliseconds, then fail with an error message.
Communications with the server should be near-instant, so this option is
only here to protect users against programming errors. </li>
</ul>
<h2> Notes </h2>
<ul>
<li>s6-fdholder-storec is the "internal" version of
<a href="s6-fdholder-store.html">s6-fdholder-store</a>. It simply
expects to be run as a UCSPI client, i.e. talking to the server
over descriptors 6 and 7, instead of connecting to the server
itself. </li>
<li> The error messages for the s6-fdholder suite are explained
<a href="s6-fdholder-errorcodes.html">here</a>. </li>
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