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<h1 class="topictitle1">UDP and TCP devices in the "root" (/) file system</h1>
<div><p>The <span class="q">"root"</span> (/) file system under the directory of /dev/xti
will now hold two device drivers named udp and tcp.</p>
<div class="section"><p>Both of these drivers are character special
files (*CHRSFs) and are created during the first initial program load (IPL).
The UDP and TCP device drivers are used to open a connection to the UDP and
TCP transport providers. Both of these drivers are user devices and receive
a new device major number. They also have cloned opens, which means that each
open obtains a unique instance of the device. The use of these devices is
only supported in <span class="keyword">i5/OS™</span> Portable
Application Solutions Environment (PASE). The following table contains
the objects that will be created and their properties.</p>
</div>
<div class="tablenoborder"><a name="rzaaxudptcp__rzaaxdevobj"><!-- --></a><table cellpadding="4" cellspacing="0" summary="" id="rzaaxudptcp__rzaaxdevobj" width="100%" frame="border" border="1" rules="all"><caption>Table 1. Device driver
objects and properties</caption><thead align="left"><tr><th align="center" valign="top" width="14.035087719298245%" id="d0e43">Path name</th>
<th align="center" valign="top" width="11.152882205513784%" id="d0e45">Type</th>
<th align="center" valign="top" width="11.904761904761903%" id="d0e47">Major</th>
<th align="center" valign="top" width="10.401002506265664%" id="d0e49">Minor</th>
<th align="center" valign="top" width="10.401002506265664%" id="d0e51">Owner</th>
<th align="center" valign="top" width="10.526315789473683%" id="d0e53">Owner data authorities</th>
<th align="center" valign="top" width="10.526315789473683%" id="d0e55">Group</th>
<th align="center" valign="top" width="10.526315789473683%" id="d0e57">Group data authorities</th>
<th align="center" valign="top" width="10.526315789473683%" id="d0e59">Public data authorities</th>
</tr>
</thead>
<tbody><tr><td valign="top" width="14.035087719298245%" headers="d0e43 ">/dev/xti</td>
<td valign="top" width="11.152882205513784%" headers="d0e45 ">*DIR</td>
<td valign="top" width="11.904761904761903%" headers="d0e47 ">N/A</td>
<td valign="top" width="10.401002506265664%" headers="d0e49 ">N/A</td>
<td valign="top" width="10.401002506265664%" headers="d0e51 ">QSYS</td>
<td valign="top" width="10.526315789473683%" headers="d0e53 ">*RWX</td>
<td valign="top" width="10.526315789473683%" headers="d0e55 ">None</td>
<td valign="top" width="10.526315789473683%" headers="d0e57 ">*RX</td>
<td valign="top" width="10.526315789473683%" headers="d0e59 ">*RX</td>
</tr>
<tr><td valign="top" width="14.035087719298245%" headers="d0e43 ">/dev/xti/tcp</td>
<td valign="top" width="11.152882205513784%" headers="d0e45 ">*CHRSF</td>
<td valign="top" width="11.904761904761903%" headers="d0e47 ">Clone</td>
<td valign="top" width="10.401002506265664%" headers="d0e49 ">TCP</td>
<td valign="top" width="10.401002506265664%" headers="d0e51 ">QSYS</td>
<td valign="top" width="10.526315789473683%" headers="d0e53 ">*RW</td>
<td valign="top" width="10.526315789473683%" headers="d0e55 ">None</td>
<td valign="top" width="10.526315789473683%" headers="d0e57 ">*RW</td>
<td valign="top" width="10.526315789473683%" headers="d0e59 ">*RW</td>
</tr>
<tr><td valign="top" width="14.035087719298245%" headers="d0e43 ">/dev/xti/udp</td>
<td valign="top" width="11.152882205513784%" headers="d0e45 ">*CHRSF</td>
<td valign="top" width="11.904761904761903%" headers="d0e47 ">Clone</td>
<td valign="top" width="10.401002506265664%" headers="d0e49 ">UDP</td>
<td valign="top" width="10.401002506265664%" headers="d0e51 ">QSYS</td>
<td valign="top" width="10.526315789473683%" headers="d0e53 ">*RW</td>
<td valign="top" width="10.526315789473683%" headers="d0e55 ">None</td>
<td valign="top" width="10.526315789473683%" headers="d0e57 ">*RW</td>
<td valign="top" width="10.526315789473683%" headers="d0e59 ">*RW</td>
</tr>
</tbody>
</table>
</div>
</div>
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<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaaxrootfs.htm" title="The root (/) file system takes full advantage of the stream file support and hierarchical directory structure of the integrated file system. It has the characteristics of the DOS and OS/2 file systems.">"root" (/) file system</a></div>
</div>
<div class="relconcepts"><strong>Related concepts</strong><br />
<div><a href="rzaaxtmpdir.htm" title="The integrated file system creates these directories when the system is restarted if they do not already exist.">Provided directories</a></div>
</div>
<div class="relinfo"><strong>Related information</strong><br />
<div><a href="../rzalf/rzalfintro.htm">PASE (Portable Applications Solutions Environment)</a></div>
</div>
</div>
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