206 lines
5.7 KiB
HTML
206 lines
5.7 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>qsysetegid()--Set Effective Group 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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<!-- YYMMDD USERID Change description -->
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<!-- file cleaned -->
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<!-- QSYSETEG SCR450 A converted by B2H R4.1 (346) (CMS) by V2DCIJB -->
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<!-- at RCHVMW2 on 5 Oct 1999 at 14:27:20 -->
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<!-- This file has undergone html cleanup June 2002 by JET -->
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<!--End Header Records -->
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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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<a name="Top_Of_Page"></a>
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<!-- 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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<h2>qsysetegid()--Set Effective Group ID</h2>
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<div class="box" style="width: 60%;">
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<br>
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Syntax<br>
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<pre>
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#include <qsysetid.h>
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int qsysetegid(gid_t gid);
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</pre>
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Service Program Name: QSYSETIDS<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>If <em>gid</em> is equal to either the real, effective, saved group ID, or
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one of the groups in the supplemental group list, <strong>qsysetegid()</strong>
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sets the effective group ID to <em>gid</em>.</p>
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<p>If <em>gid</em> is not equal to any of the current groups, but the thread
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has *USE authority to the user profile associated with the <em>gid</em>,
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<strong>qsysetegid()</strong> sets the effective group ID to <em>gid</em>.</p>
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<p>Job scoped locks with a lock state of *SHRRD are held on the user profiles
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associated with the real user ID, effective user ID, saved user ID, real group
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ID, effective group ID, saved group ID, and all of the supplemental groups.</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>gid</em></strong></dt>
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<dd>(Input) Group ID.
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<p>This field must contain one of the following values:</p>
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<dl>
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<dt><strong>0</strong></dt>
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<dd>There is no effective group ID.<br>
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</dd>
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<dt><strong>1 to 4294967294</strong></dt>
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<dd>The group ID value for the set operation.</dd>
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</dl>
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</dd>
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</dl>
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<br>
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<h3>Authorities and Locks</h3>
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<dl>
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<dt><strong>User profile associated with <em>uid</em> authority</strong></dt>
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<dd>*USE authority is required to the user profile associated with <em>gid</em>
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if <em>gid</em> is not equal to the real, effective, saved group IDs or one of
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the groups in the supplemental group list.<br>
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</dd>
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<dt><strong>User profile associated with <em>uid</em> lock</strong></dt>
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<dd>*SHRRD</dd>
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</dl>
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<br>
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<h3>Return Value</h3>
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<dl>
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<dt><strong>0</strong></dt>
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<dd><strong>qsysetegid()</strong> was successful.<br>
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</dd>
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<dt><strong>-1</strong></dt>
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<dd><strong>qsysetegid()</strong> was not successful. <em>errno</em> is set to
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indicate the error.</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 <strong>qsysetegid()</strong> is not successful, <em>errno</em> indicates
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one of the following errors.</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#EAGAIN">EAGAIN</a>]</em></td>
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<td align="left" valign="top">
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<p>User profile associated with the <em>gid</em> is locked. Try again.</p>
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</td></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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<p>The value of the <em>gid</em> argument is not valid. Following are possible
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reasons:</p>
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<ul compact>
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<li>Out of range.</li>
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<li>Not associated with a user profile.</li>
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</ul>
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</td>
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</tr>
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<tr><td><em>[<a href="unix14.htm#EDAMAGE">EDAMAGE</a>]</em></td>
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<td align="left" valign="top">
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<p>The user profile associated with the <em>gid</em> or an internal system
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object is damaged.</p>
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</td></tr>
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<tr><td><em>[<a href="unix14.htm#ENOTSUP">ENOTSUP</a>]</em></td>
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<td align="left" valign="top">
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<p>Operation not supported. The current effective user profile specifies
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OWNER(*GRPPRF), but the group profile associated with this <em>gid</em> is not
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equal to the user profile's first group and the user's first group is not in
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the list of supplemental groups.</p>
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</td></tr>
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<tr>
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<td align="left" valign="top">
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<em>[<a href="unix14.htm#EPERM">EPERM</a>]</em></td>
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<td align="left" valign="top">
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<p>Operation not permitted. Following are possible reasons:</p>
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<ul compact>
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<li>The thread does not have *USE authority to the user profile associated with
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the <em>gid</em> and the <em>gid</em> to be set is not the same as the real,
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effective, saved group IDs or any of the supplemental groups.</li>
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<li><em>gid</em> cannot be set to 0 if there are supplemental groups.</li>
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</ul>
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</td>
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</tr>
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<tr><td><em>[<a href="unix14.htm#EUNKNOWN">EUNKNOWN</a>]</em></td>
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<td align="left" valign="top">
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<p>An unknown error has occurred. Check the joblog for error messages.</p>
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</td></tr>
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</table>
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<br>
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<hr>
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API introduced: V4R5
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<hr>
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<center>
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||
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<table cellpadding="2" cellspacing="2">
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<tr align="center">
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<td valign="middle" align="center"><a href="#Top_Of_Page">Top</a> | <a href=
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"unix.htm">UNIX-Type APIs</a> | <a href="aplist.htm">APIs by category</a></td>
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</tr>
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</table>
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</center>
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</body>
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</html>
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