ibm-information-center/dist/eclipse/plugins/i5OS.ic.apis_5.4.0.1/qusrtvus.htm

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<title>Retrieve User Space (QUSRTVUS) API</title>
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<h2>Retrieve User Space (QUSRTVUS) API</h2>
<div class="box" style="width: 70%;">
<br>
&nbsp;&nbsp;Required Parameter Group:<br>
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<br>
<table width="100%">
<tr>
<td align="center" valign="top" width="10%">1</td>
<td align="left" valign="top" width="50%">Qualified user space name</td>
<td align="left" valign="top" width="20%">Input</td>
<td align="left" valign="top" width="20%">Char(20)</td>
</tr>
<tr>
<td align="center" valign="top">2</td>
<td align="left" valign="top">Starting position</td>
<td align="left" valign="top">Input</td>
<td align="left" valign="top">Binary(4)</td>
</tr>
<tr>
<td align="center" valign="top">3</td>
<td align="left" valign="top">Length of data</td>
<td align="left" valign="top">Input</td>
<td align="left" valign="top">Binary(4)</td>
</tr>
<tr>
<td align="center" valign="top">4</td>
<td align="left" valign="top">Receiver variable</td>
<td align="left" valign="top">Output</td>
<td align="left" valign="top">Char(*)</td>
</tr>
</table>
<br>
&nbsp;&nbsp;Optional Parameter Group:<br>
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<tr>
<td align="center" valign="top" width="10%">5</td>
<td align="left" valign="top" width="50%">Error code</td>
<td align="left" valign="top" width="20%">I/O</td>
<td align="left" valign="top" width="20%">Char(*)</td>
</tr>
</table>
<br>
&nbsp;&nbsp;Default Public Authority: *USE<br>
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&nbsp;&nbsp;Threadsafe: Yes<br>
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<p>The Retrieve User Space (QUSRTVUS) API allows you to retrieve the contents
of a user space. The QUSRTVUS API does not retrieve descriptive information
about the user space object, such as its size. To retrieve information about
the attributes of a user space, refer to the <a href="qusrusat.htm">Retrieve
User Space Attributes (QUSRUSAT)</a> API.</p>
<p>If you are repeatedly accessing the contents of a user space and are using
an HLL that supports pointers, see the <a href="qusptrus.htm">Retrieve Pointer
to User Space</a> (QUSPTRUS) API; this API provides a pointer to the user space
for improved performance. When you have obtained a pointer, you use pointer
arithmetic to access the contents of a user space.</p>
<p><strong>Note:</strong> To determine the starting position for the QUSRTVUS
API, you must add 1 to the offset value. In contrast to the i5/OS list APIs,
which use an offset value based on 0 for the starting position, the QUSRTVUS
API uses a value based on 1. For the QUSRTVUS API, the first character in the
user space is at position 1.</p>
<br>
<h3>Authorities and Locks</h3>
<dl>
<dt><em>Library Authority</em></dt>
<dd>*EXECUTE</dd>
<dt><em>User Space Authority</em></dt>
<dd>*USE</dd>
<dt><em>User Space Lock</em></dt>
<dd>*SHRNUP</dd>
</dl>
<br>
<h3>Required Parameter Group</h3>
<dl>
<dt><strong>Qualified user space name</strong></dt>
<dd>INPUT; CHAR(20)
<p>The first 10 characters contain the user space name, and the second 10
characters contain the name of the library where the user space is located. The
special values supported for the library name are *LIBL and *CURLIB.</p>
</dd>
<dt><strong>Starting position</strong></dt>
<dd>INPUT; BINARY(4)
<p>The first byte of the user space to be retrieved. A value of 1 will identify
the first character in the user space.</p>
</dd>
<dt><strong>Length of data</strong></dt>
<dd>INPUT; BINARY(4)
<p>The length of the data to retrieve. This length must not be larger than the
size of the variable that is to receive the data. It must also be greater than
0.</p>
</dd>
<dt><strong>Receiver variable</strong></dt>
<dd>OUTPUT; CHAR(*)
<p>The variable that will receive the contents of the user space being
retrieved.</p>
</dd>
</dl>
<br>
<h3>Optional Parameter</h3>
<dl>
<dt><strong>Error code</strong></dt>
<dd>I/O; CHAR(*)
<p>The structure in which to return error information. For the format of the
structure, see <a href="../apiref/error.htm#hdrerrcod">Error Code Parameter</a>. If this
parameter is omitted, diagnostic and escape messages are issued to the
application.</p>
</dd>
</dl>
<br>
<h3>Error Messages</h3>
<table width="100%" cellpadding="5">
<tr>
<th align="left" valign="top">Message ID</th>
<th align="left" valign="top">Error Message Text</th>
</tr>
<tr>
<td width="15%" valign="top">CPF24B4 E</td>
<td width="85%" valign="top">Severe error while addressing parameter list.</td>
</tr>
<tr>
<td align="left" valign="top">CPF3CF1 E</td>
<td align="left" valign="top">Error code parameter not valid.</td>
</tr>
<tr>
<td align="left" valign="top">CPF3C0F E</td>
<td align="left" valign="top">Value &amp;1 for starting position parameter is
not valid.</td>
</tr>
<tr>
<td align="left" valign="top">CPF3C06 E</td>
<td align="left" valign="top">Information not retrieved from user space
&amp;1.</td>
</tr>
<tr>
<td align="left" valign="top">CPD3C0F D</td>
<td align="left" valign="top">Value &amp;1 for starting position parameter is
not valid.</td>
</tr>
<tr>
<td align="left" valign="top">CPD3C12 D</td>
<td align="left" valign="top">Length of data is not valid.</td>
</tr>
<tr>
<td align="left" valign="top">CPD3C14 D</td>
<td align="left" valign="top">Starting position &amp;1 and length &amp;2 cause
space overflow.</td>
</tr>
<tr>
<td align="left" valign="top">CPD3C16 D</td>
<td align="left" valign="top">Receiver area too small for length of data &amp;1
specified.</td>
</tr>
<tr>
<td align="left" valign="top">CPD3C20 D</td>
<td align="left" valign="top">Error occurred with receiver variable
specified.</td>
</tr>
<tr>
<td align="left" valign="top">CPF3C12 E</td>
<td align="left" valign="top">Length of data is not valid.</td>
</tr>
<tr>
<td align="left" valign="top">CPF3C14 E</td>
<td align="left" valign="top">Starting position &amp;1 and length &amp;2 cause
space overflow.</td>
</tr>
<tr>
<td align="left" valign="top">CPF3C16 E</td>
<td align="left" valign="top">Receiver area too small for length of data &amp;1
specified.</td>
</tr>
<tr>
<td align="left" valign="top">CPF3C19 E</td>
<td align="left" valign="top">Error occurred with receiver variable
specified.</td>
</tr>
<tr>
<td align="left" valign="top">CPF3C36 E</td>
<td align="left" valign="top">Number of parameters, &amp;1, entered for this
API was not valid.</td>
</tr>
<tr>
<td align="left" valign="top">CPF3C90 E</td>
<td align="left" valign="top">Literal value cannot be changed.</td>
</tr>
<tr>
<td align="left" valign="top">CPF8100 E</td>
<td align="left" valign="top">All CPF81xx messages could be returned. xx is
from 01 to FF.</td>
</tr>
<tr>
<td align="left" valign="top">CPF9801 E</td>
<td align="left" valign="top">Object &amp;2 in library &amp;3 not found.</td>
</tr>
<tr>
<td align="left" valign="top">CPF9802 E</td>
<td align="left" valign="top">Not authorized to object &amp;2 in &amp;3.</td>
</tr>
<tr>
<td align="left" valign="top">CPF9803 E</td>
<td align="left" valign="top">Cannot allocate object &amp;2 in library
&amp;3.</td>
</tr>
<tr>
<td align="left" valign="top">CPF9807 E</td>
<td align="left" valign="top">One or more libraries in library list
deleted.</td>
</tr>
<tr>
<td align="left" valign="top">CPF9808 E</td>
<td align="left" valign="top">Cannot allocate one or more libraries on library
list.</td>
</tr>
<tr>
<td align="left" valign="top">CPF9810 E</td>
<td align="left" valign="top">Library &amp;1 not found.</td>
</tr>
<tr>
<td align="left" valign="top">CPF9820 E</td>
<td align="left" valign="top">Not authorized to use library &amp;1.</td>
</tr>
<tr>
<td align="left" valign="top">CPF9830 E</td>
<td align="left" valign="top">Cannot assign library &amp;1.</td>
</tr>
<tr>
<td align="left" valign="top">CPF9872 E</td>
<td align="left" valign="top">Program or service program &amp;1 in library
&amp;2 ended. Reason code &amp;3.</td>
</tr>
</table>
<br>
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API introduced: V1R3
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