static/freebsd/man9/devclass_get_drivers.9 4.html


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<table class="head">
  <tr>
    <td class="head-ltitle">DEVCLASS_GET_DRIVERS(9)</td>
    <td class="head-vol">Kernel Developer's Manual</td>
    <td class="head-rtitle">DEVCLASS_GET_DRIVERS(9)</td>
  </tr>
</table>
<div class="manual-text">
<section class="Sh">
<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
<p class="Pp"><code class="Nm">devclass_get_drivers</code> &#x2014;
    <span class="Nd">get a list of drivers in a devclass</span></p>
</section>
<section class="Sh">
<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
<p class="Pp"><code class="In">#include
    &lt;<a class="In">sys/param.h</a>&gt;</code>
  <br/>
  <code class="In">#include &lt;<a class="In">sys/bus.h</a>&gt;</code></p>
<p class="Pp"><var class="Ft">int</var>
  <br/>
  <code class="Fn">devclass_get_drivers</code>(<var class="Fa" style="white-space: nowrap;">devclass_t
    dc</var>, <var class="Fa" style="white-space: nowrap;">driver_t
    ***listp</var>, <var class="Fa" style="white-space: nowrap;">int
    *countp</var>);</p>
</section>
<section class="Sh">
<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
<p class="Pp">Retrieve a list of pointers to all driver instances currently in
    the devclass and return the list in <var class="Fa">*listp</var> and the
    number of drivers in the list in <var class="Fa">*countp</var>. The memory
    allocated for the list should be freed using
    <a class="permalink" href="#free"><code class="Fn" id="free">free</code></a>(<var class="Fa">*listp</var>,
    <var class="Fa">M_TEMP</var>), even if <var class="Fa">*countp</var> is
  0.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="RETURN_VALUES"><a class="permalink" href="#RETURN_VALUES">RETURN
  VALUES</a></h1>
<p class="Pp">Zero is returned on success, otherwise an appropriate error is
    returned.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
  ALSO</a></h1>
<p class="Pp"><a class="Xr">devclass(9)</a>, <a class="Xr">device(9)</a></p>
</section>
<section class="Sh">
<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
<p class="Pp">This manual page was written by <span class="An">Nate
    Lawson</span>.</p>
</section>
</div>
<table class="foot">
  <tr>
    <td class="foot-date">May 19, 2005</td>
    <td class="foot-os">FreeBSD 15.0</td>
  </tr>
</table>