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<meta name="DC.Title" content="Use integrated file system APIs in the QSYS.LIB file system" />
<meta name="abstract" content="Many integrated file system APIs are valid in the QSYS.LIB file system." />
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<h1 class="topictitle1">Use integrated file system APIs in the QSYS.LIB file system</h1>
<div><p>Many integrated file system APIs are valid in the QSYS.LIB file
system.</p>
<div class="section"><p>The APIs listed in <a href="rzaaxprogapi.htm#rzaaxprogapi">Perform operations using APIs</a> can operate on the QSYS.LIB
file system, except for the following restrictions:</p>
</div>
<div class="section"><ul><li>File operations can be done only on program-described physical files and
source physical files.</li>
<li>The <span class="apiname">symlink()</span> function can
be used only to link <em>to</em> an object in QSYS.LIB from another file system
that supports symbolic links.</li>
<li>The <span class="apiname">QjoStartJournal()</span> and <span class="apiname">QjoEndJournal()</span> APIs
cannot be used on database physical files.</li>
</ul>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaaxlibfs.htm" title="The QSYS.LIB file system supports the iSeries server library structure.">Library file system (QSYS.LIB)</a></div>
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<div class="relinfo"><strong>Related information</strong><br />
<div><a href="../apiref/api.htm">Application programming interfaces (APIs)</a></div>
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