93 lines
6.9 KiB
HTML
93 lines
6.9 KiB
HTML
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<title>Open systems file system (QOpenSys)</title>
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</head>
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<body id="rzaaxopenfs"><a name="rzaaxopenfs"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Open systems file system (QOpenSys)</h1>
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<div><p><span>The QOpenSys file system is compatible
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with open system standards based on UNIX<sup>®</sup>, such as POSIX and X/Open Portability
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Guide (XPG). Like the "root" (/) file system, this file system takes advantage
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of the stream file and directory support that is provided by the integrated
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file system.</span></p>
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<div class="section"><p>In addition, it:</p>
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</div>
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<div class="section"> <ul><li>Is accessed through a hierarchical directory structure similar to UNIX systems.</li>
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<li>Is optimized for stream file input and output.</li>
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<li>Supports multiple hard links and symbolic links.</li>
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<li>Supports case-sensitive names.</li>
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<li>Supports local sockets.</li>
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<li>Supports threadsafe APIs.</li>
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<li>Supports *FIFO objects.</li>
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<li>Supports the journaling of object changes.</li>
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<li>Supports the scanning of objects using the integrated file system scan-related
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exit points.</li>
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</ul>
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</div>
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<div class="section"><p>The QOpenSys file system has the same characteristics as the <span class="q">"root"</span> (/)
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file system, except it is case-sensitive to enable support for UNIX-based
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open systems standards.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Use QOpenSys</h4><p>QOpenSys can be
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accessed through the integrated file system interface using either the <span class="keyword">i5/OS™</span> file server or the integrated
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file system commands, user displays, and APIs.</p>
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</div>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rzaaxopencase.htm">Case-sensitivity in the QOpenSys file system</a></strong><br />
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Unlike the <span class="q">"root"</span> (/) file system, the QOpenSys file system
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distinguishes between uppercase or lowercase when searching for object names. </li>
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<li class="ulchildlink"><strong><a href="rzaaxopenpath.htm">Path names in the QOpenSys file system</a></strong><br />
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Path names have specific form in the QOpenSys file system.</li>
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<li class="ulchildlink"><strong><a href="rzaaxopenlink.htm">Links in the QOpenSys file system</a></strong><br />
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Multiple hard links to the same object are allowed in the QOpenSys file system. Symbolic links are fully supported.</li>
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<li class="ulchildlink"><strong><a href="rzaaxopenifscom.htm">Use integrated file system commands and displays in the QOpenSys file system</a></strong><br />
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All of the commands that are listed in Access using CL commands and the displays that are described in Access using menus and displays can operate on the QOpenSys file system. However, it may not be safe to use these commands in a multi-thread capable process.</li>
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<li class="ulchildlink"><strong><a href="rzaaxopenapi.htm">Use integrated file system APIs in the QOpenSys file system</a></strong><br />
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All the APIs listed in Perform operations using APIs topic can operate on the QOpenSys file system.</li>
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<li class="ulchildlink"><strong><a href="rzaaxopenjournal.htm">Journal object changes in the QOpenSys file system</a></strong><br />
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Objects in the QOpenSys file system can be journaled. This function enables you to recover the changes to an object that have occurred since the object was last saved.</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaaxfsknow.htm" title="A file system provides you the support to access specific segments of storage that are organized as logical units. These logical units on your server are files, directories, libraries, and objects.">Work with file systems</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<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>
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</div>
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</div>
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</body>
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