258 lines
6.6 KiB
HTML
258 lines
6.6 KiB
HTML
<!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>rpcb_unset()--Unregister Their Addresses</title>
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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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<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>rpcb_unset()--Unregister Their Addresses</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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<br>
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<pre>
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#include <rpc/rpc.h>
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#include <netconfig.h>
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bool_t rpcb_unset(const u_long <em>prognum</em>,
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const u_long <em>versnum</em>,
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const struct netconfig *<em>netconf</em>);
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</pre>
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<br>
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Service Program Name: QZNFTRPC<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: No<br>
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<!-- iddvc RMBR -->
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<br>
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</div>
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<p>The <strong>rpcb_unset()</strong> function is an interface to the RPC
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service package (RPCBind), which destroys the mapping between the triple
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(<em>prognum, versnum, netconf->nc_netid</em>) and the address on the host
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machine's RPCBind service. If <em>netconf</em> is NULL,
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<strong>rpcb_unset()</strong> destroys all mapping between the above triple and
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the addresses on the machine's RPCBind service.</p>
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<br>
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<h3>Parameters</h3>
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<dl>
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<dt><strong>prognum</strong> (Input) </dt>
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<dd>The program number of the remote program.<br>
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<br>
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</dd>
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<dt><strong>vernum</strong> (Input) </dt>
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<dd>The version number of the remote program.<br>
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<br>
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</dd>
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<dt><strong>netconf</strong> (Input) </dt>
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<dd>The transport protocol.</dd>
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</dl>
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<br>
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<h3>Authorities</h3>
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<p>The caller of the <strong>rpcb_unset()</strong> API must have execute (*X)
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authority to the /etc directory and must have read (*R) authority to the
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netconfig file.</p>
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<br>
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<h3>Return Value</h3>
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<table cellpadding="5">
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<!-- cols="15 85" -->
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<tr>
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<td align="left" valign="top"><em>TRUE (1)</em></td>
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<td align="left" valign="top"><strong>rpcb_unset</strong> was successful.</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>FALSE (0)</em></td>
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<td align="left" valign="top"><strong>rpcb_unset</strong> was
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unsuccessful.</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 Conditions</h3>
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<p>Upon failure, <strong>rpcb_unset()</strong> sets the global structure
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<em>rpc_createerr</em>. The <em>rpc_createerr.cf_stat</em> variable contains a
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status value, which indicates the error reason. The
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<em>rpc_createerr.cf_error.re_errno</em> variable is meaningful when some
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status values are set.</p>
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<p>The <em>rpc_createerr.cf_stat</em> variable can be set to one of the
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following values:</p>
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<table cellpadding="5">
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<!-- cols="25 75" -->
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<tr>
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<td align="left" valign="top"><em>[RPC_INTR]</em></td>
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<td align="left" valign="top">Interrupted RPC call. An exception has occurred
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in the RPC API. The <em>rpc_createerr.cf_error.re_errno</em> is set to
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EUNKNOWN.</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>[RPC_RPCBFAILURE]</em></td>
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<td align="left" valign="top">Unable to contact the RPCBind daemon.</td>
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</tr>
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</table>
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<p>This API calls <strong>clnt_tli_create()</strong> and
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<strong>clnt_call()</strong> APIs in order to perform its task. It inherits
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RPC_SYSTEMERROR from <strong>clnt_tli_create()</strong> API and it inherits all
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error conditions from <strong>clnt_call()</strong> API except RPC_TIMEDOUT and
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RPC_FAILED.</p>
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<br>
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<h3>Error Messages</h3>
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<table width="100%" cellpadding="5">
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<!-- cols="15 85" -->
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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">CPIA1B1 I</td>
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<td width="85%" valign="top">A problem was encountered in the RPC client.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPIA1B2 I</td>
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<td align="left" valign="top">TI-RPC encountered a problem in the transport
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protocol.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPIA1B8 I</td>
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<td align="left" valign="top">A problem occurred while trying to contact the
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RPCBind daemon.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPE3418 E</td>
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<td align="left" valign="top">Possible APAR condition or hardware failure.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPF3CF2 E</td>
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<td align="left" valign="top">Error(s) occurred during running of &1
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API.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPF9872 E</td>
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<td align="left" valign="top">Program or service program &1 in library
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&2 ended. 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>Related Information</h3>
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<ul>
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<li><a href="rpcb_set.htm">rpcb_set()--Register the Server Address with the
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RPCBind</a></li>
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</ul>
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<br>
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<h3>Example</h3>
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<p>See <a href="../apiref/aboutapis.htm#codedisclaimer">Code disclaimer information</a>
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for information pertaining to code examples.</p>
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<p>The following example shows how <strong>rpcb_unset()</strong> is used:</p>
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<pre>
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/* Define remote program number and version */
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#define RMTPROGNUM (u_long)0x3fffffffL
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#define RMTPROGVER (u_long)0x1
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#include <stdio.h>
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#include <rpc/rpc.h>
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#include <netconfig.h>
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main()
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{
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struct netconfig *nconf;
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...
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/* Returns a pointer to nconf corresponding to NETCONF */
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if ((nconf = getnetconfigent("UDP")) ==
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(struct netconfig *)NULL) {
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fprintf(stderr, "Cannot get netconfig entry for UDP\n");
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exit(1);
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}
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...
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/* Destroy the connect with the RPCBind daemon */
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if (!<strong>rpcb_unset</strong>(RMTPROGNUM, RMTPROGVER, nconf)){
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fprintf(stderr, "<strong>rpcb_unset</strong> failed!!\n");
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exit(1);
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}
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...
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}
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</pre>
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<br>
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<hr>
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API introduced: V4R2
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<hr>
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<table cellpadding="2" cellspacing="2" align="center">
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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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"rpc1.htm">Remote Procedure Call (RPC) APIs</a> | <a href="aplist.htm">APIs by
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category</a></td>
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</tr>
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</table>
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</body>
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</html>
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