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<title>s6: the s6 library interface</title>
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<p>
<a href="../">s6</a><br />
<a href="//skarnet.org/software/">Software</a><br />
<a href="//skarnet.org/">skarnet.org</a>
</p>
<h1> The <tt>s6</tt> library interface </h1>
<h2> General information </h2>
<p>
<tt>libs6</tt> is a collection of utility
C interfaces, used in the s6 executables.
</p>
<h2> Compiling </h2>
<ul>
<li> Make sure the s6 headers, as well as the skalibs headers,
are visible in your header search path. </li>
<li> Use <tt>#include <s6/s6.h></tt> </li>
</ul>
<h2> Linking </h2>
<ul>
<li> Make sure the s6 libraries, as well as the skalibs
libraries, are visible in your library search path. </li>
<li> Link against <tt>-ls6</tt> and <tt>-lskarnet</tt>.
If you're using socket functions (which is the case with
<a href="ftrigr.html">libftrigr</a>, for instance, add
<tt>`cat $sysdeps/socket.lib`</tt> to your command line.
If you're using timed functions involving TAI timestamps
(which is also the case with <a href="ftrigr.html">libftrigr</a>
for instance), add
<tt>`cat $sysdeps/sysclock.lib`</tt>. <tt>$sysdeps</tt>
stands for your skalibs sysdeps directory. </li>
</ul>
<h2> Programming </h2>
<p>
The <tt>s6/s6.h</tt> header is actually a
concatenation of other headers:
the libs6 is separated into several modules, each of them with its
own header.
</p>
<ul>
<li> The <a href="accessrules.html">s6/accessrules.h</a> header
provides functions to check credentials against configuration files. </li>
<li> The <a href="ftrigr.html">s6/ftrigr.h</a> header provides
functions to subscribe to fifodirs and be notified of events. </li>
<li> The <a href="ftrigw.html">s6/ftrigw.h</a> header provides
functions to manage fifodirs and send notifications to them. </li>
<li> The <a href="fdholder.html">s6/fdholder.h</a> header provides
functions to communicate with a
<a href="../s6-fdholderd.html">s6-fdholderd</a> server and exchange
file descriptors with it. </li>
</ul>
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