static/freebsd/man4/usfs.4 3.html


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<table class="head">
  <tr>
    <td class="head-ltitle">USFS(4)</td>
    <td class="head-vol">Device Drivers Manual</td>
    <td class="head-rtitle">USFS(4)</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">usfs</code> &#x2014; <span class="Nd">USB device
    side support for bulk only transport mass storage</span></p>
</section>
<section class="Sh">
<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
<p class="Pp">To compile this driver into the kernel, place the following lines
    in your kernel configuration file:</p>
<div class="Bd Pp Bd-indent"><code class="Cd">device usb</code>
<br/>
<code class="Cd">device usfs</code></div>
<p class="Pp">Alternatively, to load the driver as a module at boot time, place
    the following line in <a class="Xr">loader.conf(5)</a>:</p>
<div class="Bd Pp Bd-indent Li">
<pre>usfs_load=&quot;YES&quot;</pre>
</div>
</section>
<section class="Sh">
<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
<div class="Bf Sy">This driver is obsolete. Users are advised to use
  <a class="Xr">cfumass(4)</a> instead.</div>
<p class="Pp">The <code class="Nm">usfs</code> driver provides support for
    emulating an USB mass storage device when the USB stack is activated in USB
    device side mode (the <a class="Xr">usb_template(4)</a> module is loaded and
    the <var class="Va">hw.usb.template</var> sysctl is set to 0).</p>
<p class="Pp">Upon attach the driver creates a RAM disk which can be read and
    written.</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">cfumass(4)</a>, <a class="Xr">umass(4)</a>,
    <a class="Xr">usb(4)</a>, <a class="Xr">usb_template(4)</a></p>
</section>
<section class="Sh">
<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
<p class="Pp">The <code class="Nm">usfs</code> driver appeared in
    <span class="Ux">FreeBSD 8.0</span>.</p>
</section>
</div>
<table class="foot">
  <tr>
    <td class="foot-date">May 17, 2018</td>
    <td class="foot-os">FreeBSD 15.0</td>
  </tr>
</table>