439 lines
11 KiB
HTML
439 lines
11 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta name="Copyright" content="Copyright (c) 2006 by IBM Corporation">
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<title>Qp0lGetPathFromFileID()--Get Path Name of Object from Its File
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ID</title>
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<!-- Begin Header Records ========================================== -->
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<!-- Change History: -->
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<!-- file cleaned -->
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<!-- Unix2 SCRIPT J converted by B2H R4.1 (346) (CMS) by V2KEA304 -->
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<!-- at RCHVMW2 on 17 Feb 1999 at 11:05:09 -->
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<!-- 011022 JTROUS Changes from API Review 1, V5R2 -->
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<!-- 0206?? JET This file has undergone html cleanup -->
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<!-- 050406 JTROUS: fix enums, no change flag, V5R4 -->
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<link rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</head>
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<body>
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<!--End Header Records --><!-- Java sync-link -->
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<script language="Javascript" src="../rzahg/synch.js" type="text/javascript">
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</script>
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<a name="Top_Of_Page"></a>
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<h2>Qp0lGetPathFromFileID()--Get Path Name of Object from Its File ID</h2>
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<div class="box" style="width: 70%;">
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<br>
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Syntax<br>
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<pre>
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#include <Qp0lstdi.h>
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char *Qp0lGetPathFromFileID(char <em>*buf</em>, size_t <em>size</em>,
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Qp0lFID_t <em>fileid</em>);
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</pre>
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Service Program Name: QP0LLIB2<br>
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<!-- iddvc RMBR -->
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<br>
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Default Public Authority: *USE<br>
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<!-- iddvc RMBR -->
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<br>
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Threadsafe: Yes<br>
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<!-- iddvc RMBR -->
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<br>
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</div>
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<p>The <strong>Qp0lGetPathFromFileID()</strong> function determines an absolute
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path name of the file identified by <em>fileid</em> and stores it in <em>
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buf</em>. The components of the returned path name are not symbolic links. If
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the file has more than one path name, only one is returned.</p>
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<p>The access time of each directory in the absolute path name of the file
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(excluding the file itself) is updated.</p>
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<p>If <em>buf</em> is a NULL pointer, <strong>Qp0lGetPathFromFileID()</strong>
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returns a NULL pointer and the EINVAL error.</p>
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<p>The contents of <em>buf</em> after an error are not defined.</p>
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<p><strong>Qp0lGetPathFromFileID()</strong> is supported in the "root" (/),
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QOpenSys, and user-defined file systems.</p>
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<br>
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<h3>Parameters</h3>
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<dl>
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<dt><strong><em>buf</em></strong></dt>
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<dd>(Output) A pointer to a buffer that will be used to hold an absolute path
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name of the file identified by <em>fileid</em>. The buffer must be large enough
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to contain the full path name including the terminating NULL character.<br>
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<br>
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<p>The path name is returned in the CCSID (coded character set identifier)
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currently in effect for the job. If the CCSID of the job is 65535, this
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parameter is assumed to be represented in the default CCSID of the job.</p>
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<p>See <a href="getpthffu.htm">QlgGetPathFromFileID()--Get Path Name of Object
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from Its File ID (using NLS-enabled path name)</a> for a description and an
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example of supplying the <em>buf</em> in any CCSID.</p>
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<br>
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</dd>
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<dt><strong><em>size</em></strong></dt>
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<dd>(Input) The number of bytes in the buffer <samp>buf</samp>.<br>
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<br>
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</dd>
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<dt><strong><em>fileid</em></strong></dt>
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<dd>(Input) The identifier of the file whose path name is to be returned. This
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identifier is logged in audit journal entries to identify the file being
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audited. See the <samp>Parent File ID</samp> and <samp>Object File ID</samp>
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fields of the audit journal entries described in the <a href=
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"../bookssc415302.pdf">iSeries Security Reference</a> <img src="wbpdf.gif"
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alt="Link to PDF"> book.</dd>
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</dl>
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<br>
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<h3>Authorities</h3>
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<p><strong>Note:</strong> Adopted authority is not used.</p>
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<strong><a name="TBLAGETPF">Authorization required for
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Qp0lGetPathFromFileID()</a></strong>
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<table border>
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<tr>
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<th align="left" valign="bottom">Object Referred to</th>
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<th align="left" valign="bottom">Authority Required</th>
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<th align="left" valign="bottom">errno</th>
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</tr>
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<tr>
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<td align="left" valign="top">Each directory in the path name preceding the
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file</td>
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<td align="center" valign="top">*RX</td>
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<td align="left" valign="top">EACCES</td>
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</tr>
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<tr>
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<td align="left" valign="top">The file itself</td>
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<td align="center" valign="top">*R</td>
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<td align="left" valign="top">EACCES</td>
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</tr>
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</table>
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<br>
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<h3>Return Value</h3>
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<dl compact>
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<dt><em>value</em></dt>
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<dd><strong>Qp0lGetPathFromFileID()</strong> was successful. The value returned
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is a pointer to <em>buf</em>.</dd>
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<dt><em>NULL</em></dt>
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<dd><strong>Qp0lGetPathFromFileID()</strong> was not successful. The <em>
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errno</em> global variable is set to indicate the error. After an error, the
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contents of <em>buf</em> are not defined.</dd>
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</dl>
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<br>
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<h3>Error Conditions</h3>
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<p>If Qp0lGetPathFromFileID() is not successful, <em>errno</em> usually
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indicates one of the following errors. Under some conditions, <em>errno</em>
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could indicate an error other than those listed here.</p>
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<table cellpadding="5">
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<!-- cols="25 75" -->
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<tr>
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<th align="left" valign="bottom">Error condition</th>
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<th align="left" valign="bottom">Additional information</th>
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</tr>
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<tr>
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<td align="left" valign="top">
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<em>[<a href="unix14.htm#EACCES">EACCES</a>]</em></td>
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<td align="left" valign="top">
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<p>If you are accessing a remote file through the Network File System, update
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operations to file permissions at the server are not reflected at the client
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until updates to data that is stored locally by the Network File System take
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place. (Several options on the Add Mounted File System (ADDMFS) command
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determine the time between refresh operations of local data.) Access to a
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remote file may also fail due to different mappings of user IDs (UID) or group
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IDs (GID) on the local and remote systems.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top">
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<em>[<a href="unix14.htm#EAGAIN">EAGAIN</a>]</em></td>
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<td align="left" valign="top">
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</td>
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</tr>
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<tr>
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<td align="left" valign="top">
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<em>[<a href="unix14.htm#EBADFID">EBADFID</a>]</em></td>
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<td align="left" valign="top">
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</td>
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</tr>
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<tr>
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<td align="left" valign="top">
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<em>[<a href="unix14.htm#EBUSY">EBUSY</a>]</em></td>
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<td align="left" valign="top">
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</td>
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</tr>
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<tr>
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<td align="left" valign="top">
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<em>[<a href="unix14.htm#EDAMAGE">EDAMAGE</a>]</em></td>
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<td align="left" valign="top">
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</td>
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</tr>
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<tr>
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<td align="left" valign="top">
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<em>[<a href="unix14.htm#EFAULT">EFAULT</a>]</em></td>
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<td align="left" valign="top">
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</td>
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</tr>
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<tr>
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<td align="left" valign="top">
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<em>[<a href="unix14.htm#EFILECVT">EFILECVT</a>]</em></td>
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<td align="left" valign="top">
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</td>
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</tr>
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<tr>
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<td align="left" valign="top">
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<em>[<a href="unix14.htm#EINVAL">EINVAL</a>]</em></td>
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<td align="left" valign="top">
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</td>
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</tr>
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<tr>
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<td align="left" valign="top">
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<em>[<a href="unix14.htm#EIO">EIO</a>]</em></td>
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<td align="left" valign="top">
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</td>
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</tr>
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<tr>
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<td align="left" valign="top">
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<em>[<a href="unix14.htm#ENOENT">ENOENT</a>]</em></td>
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<td align="left" valign="top">
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<p>No path names were found for this <em>fileid</em> or the user is not
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authorized to any of the paths.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top">
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<em>[<a href="unix14.htm#ENOMEM">ENOMEM</a>]</em></td>
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<td align="left" valign="top">
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</td>
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</tr>
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<tr>
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<td align="left" valign="top">
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<em>[<a href="unix14.htm#ENOTAVAIL">ENOTAVAIL</a>]</em></td>
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<td align="left" valign="top">
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</td>
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</tr>
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<tr>
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<td align="left" valign="top">
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<em>[<a href="unix14.htm#ERANGE">ERANGE</a>]</em></td>
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<td align="left" valign="top">
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<p>For example, the <strong>size</strong> argument is too small. It is greater than zero but
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smaller than the length of the path name plus a NULL character.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top">
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<em>[<a href="unix14.htm#ESTALE">ESTALE</a>]</em></td>
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<td align="left" valign="top">
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<p>If you are accessing a remote file through the Network File System, the file
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may have been deleted at the server.</p>
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</td>
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</tr>
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<tr>
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<td align="left" valign="top">
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<em>[<a href="unix14.htm#EUNKNOWN">EUNKNOWN</a>]</em></td>
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<td align="left" valign="top">
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</td>
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</tr>
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</table>
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<br>
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<br>
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<h3>Error Messages</h3>
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<p>The following messages may be sent from this function:</p>
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<table width="100%">
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<tr>
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<th align="left" valign="top">Message ID</th>
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<th align="left" valign="top">Error Message Text</th>
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</tr>
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<tr>
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<td width="15%" valign="top">CPE3418 E</td>
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<td width="85%" valign="top">Possible APAR condition or hardware failure.</td>
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</tr>
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<tr>
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<td valign="top">CPFA0D4 E</td>
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<td valign="top">File system error occurred. Error number &1.</td>
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</tr>
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<tr>
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<td valign="top">CPF3CF2 E</td>
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<td valign="top">Error(s) occurred during running of &1 API.</td>
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</tr>
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<tr>
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<td valign="top">CPF9872 E</td>
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<td valign="top">Program or service program &1 in library &2 ended.
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Reason code &3.</td>
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</tr>
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</table>
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<br>
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<br>
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<h3>Usage Notes</h3>
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<ol type="1">
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<li>The following file systems do not support <strong>
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Qp0lGetPathFromFileID()</strong>:<br>
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<br>
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</p>
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<ul>
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<li>Network File System</li>
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<li>QSYS.LIB</li>
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<li>Independent ASP QSYS.LIB</li>
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<li>QDLS</li>
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<li>QOPT</li>
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<li>QFileSvr.400</li>
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<li>QNetWare</li>
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<li>QNTC</li>
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</ul>
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</li>
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</ol>
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<br>
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|
|
<h3>Related Information</h3>
|
||
|
|
|
||
|
|
<ul>
|
||
|
|
<li>The <<strong>Qp0lstdi.h</strong>> file (see <a href="unix13.htm">
|
||
|
|
Header Files for UNIX-Type Functions</a>)
|
||
|
|
</li>
|
||
|
|
<li><a href="getpthffu.htm">QlgGetPathFromFileID()</a>--Get Path Name of Object
|
||
|
|
from Its File ID (using NLS-enabled path name)</li>
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
<br>
|
||
|
|
<h3>Example</h3>
|
||
|
|
<p>See <a href="../apiref/aboutapis.htm#codedisclaimer">Code disclaimer information</a>
|
||
|
|
for information pertaining to code examples.</p>
|
||
|
|
<p>The following example determines the path name of a file, given its file ID.
|
||
|
|
In this example, the fileid is hardcoded. More realistically, the fileid is
|
||
|
|
obtained from the audit journal entry and passed to <strong>
|
||
|
|
Qp0lGetPathFromFileID()</strong>.</p>
|
||
|
|
|
||
|
|
<pre>
|
||
|
|
#include <Qp0lstdi.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
main()
|
||
|
|
{
|
||
|
|
char path[1024];
|
||
|
|
Qp0lFID_t fileid = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||
|
|
0x00, 0x00, 0x00, 0x00, 0x80, 0xFF, 0xCF, 0x00};
|
||
|
|
|
||
|
|
if (Qp0lGetPathFromFileID(path, sizeof(path), fileid) == NULL)
|
||
|
|
perror("Qp0lGetPathFromFileID() error");
|
||
|
|
else
|
||
|
|
printf("The file's path is: %s\n", path);
|
||
|
|
}
|
||
|
|
</pre>
|
||
|
|
|
||
|
|
<p><strong>Output:</strong></p>
|
||
|
|
|
||
|
|
<pre>
|
||
|
|
The file's path is: /myfile
|
||
|
|
</pre>
|
||
|
|
|
||
|
|
<br>
|
||
|
|
<hr>
|
||
|
|
API introduced: V3R1
|
||
|
|
|
||
|
|
<hr>
|
||
|
|
<center>
|
||
|
|
<table cellpadding="2" cellspacing="2">
|
||
|
|
<tr align="center">
|
||
|
|
<td valign="middle" align="center"><a href="#Top_Of_Page">Top</a> | <a href=
|
||
|
|
"unix.htm">UNIX-Type APIs</a> | <a href="aplist.htm">APIs by category</a></td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
</center>
|
||
|
|
</body>
|
||
|
|
</html>
|
||
|
|
|