252 lines
6.4 KiB
HTML
252 lines
6.4 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>svcerr_systemerr()--Send Information to Client for System Error</title>
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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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<!-- Begin Header Records ========================================== -->
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<!-- RCHVMW2 on 7 Oct 1998 at 23:43:14 -->
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<!-- Edited by Kersten Feb 02 -->
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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>svcerr_systemerr()--Send Information to Client for System Error</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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<!-- iddvc RMBR -->
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<br>
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<pre>
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#include <rpc/rpc.h>
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void svcerr_systemerr(const SVCXPRT *<em>xprt</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>svcerr_systemerr()</strong> function sends information to the
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remote client that the service dispatch routine detected a system error not
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covered by any particular protocol.</p>
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<br>
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<h3>Parameters</h3>
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<dl>
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<dt><strong>xprt</strong> (Input) </dt>
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<dd>A pointer to the RPC service transport handle.</dd>
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</dl>
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<br>
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<h3>Authorities</h3>
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<p>No authorization is required.</p>
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<br>
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<h3>Return Value</h3>
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<p>None.</p>
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<br>
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<h3>Error Conditions</h3>
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<p>In case of an exception, the <em>errno</em> global variable is set to
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EUNKNOWN.</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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<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">CPF3CF2 E</td>
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<td width="85%" 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 &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>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>svcerr_systemerr()</strong> is
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used:</p>
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<pre>
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#include <stdio.h>
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#include <stdlib.h> /* getenv, exit */
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#include <rpc/rpc.h>
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#define MESSAGEPROG ((unsigned long)(0x20000001))
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#define PRINTMESSAGEVERS ((unsigned long)(1))
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#define PRINTMESSAGE ((unsigned long)(1))
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/* This procedure is called by dispatcher routine */
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int *printmessage_l(char **msg, struct svc_req *req)
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{
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static int result;
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char stffl30";
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int fd;
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/* Do something with *msg contents */
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...
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result = 1;
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return(&result);
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}
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/* This is the server dispatcher routine.
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It is called when a request arrives from client
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and it applies to MESSAGEPROG program number and PRINTMESSAGEVERS
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version number */
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static void
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messageprog_l(struct svc_req *rqstp, SVCXPRT *transp)
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{
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union u_argument{
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char *printmessage_l_arg;
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}argument;
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char *result;
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bool_t (*_xdr_argument)(), (*_xdr_result)();
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char *(*local)(union u_argument *, struct svc_req *);
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_rpcsvccount++;
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switch(rqstp->rq_proc)
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{
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/* rqstp->rq_proc contains the procedure number
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of procedure that should be called */
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case NULLPROC: /* empty procedure, do nothing, just send the ack */
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<strong>svc_sendreply</strong>(transp, (xdrproc_t)xdr_void, (char *)NULL);
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return;
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case PRINTMESSAGE: /* printmessage_l() */
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if (rqstp->rq_cred.oa_flavor != AUTH_SYS) {
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/* AUTH_SYS is required by this procedure */
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svcerr_weakauth(transp);
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return;
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}
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_xdr_argument = (bool_t(*)())xdr_wrapstring;
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_xdr_result = (bool_t(*)())xdr_int;
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local = (char *(*)(u_argument *, struct svc_req *))
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printmessage_l;
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break;
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default: /* no other procedures available */
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<strong>svcerr_noproc</strong>(transp);
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return;
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}
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memset((char *)&argument, 0, sizeof(argument));
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/* decode arguments for the procedure */
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if (!<strong>svc_getargs</strong>(transp, (xdrproc_t)_xdr_argument,
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(char *)&argument)){
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<strong>svcerr_decode</strong>(transp);
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return;
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}
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/* Invoke the procedure */
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result = (*local)(&argument, rqstp);
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/* Send reply to the client containing results of the invocation */
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if (result != NULL && !<strong>svc_sendreply</strong>(transp,
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(xdrproc_t)_xdr_result, result)){
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<strong>svcerr_systemerr</strong>(transp);
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}
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if (!<strong>svc_freeargs</strong>(transp, (xdrproc_t)_xdr_argument,
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(char *)&argument)){
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printf("unable to free arguments");
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exit(1);
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}
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return;
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}
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main()
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{
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pid_t pid;
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int i;
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printf("Start..");
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printf("Try to create..");
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/* Create a new RPC server instance which will use messageprog_l()
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as a dispatcher function associated with MESSAGEPROG program
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number and PRINTMESSAGEVERS version number.
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Since "VISIBLE" nettype is selected, a number of server instances
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will be actually created: one for each "VISIBLE" entry in
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/etc/netconfig */
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if(!<strong>svc_create</strong>(messageprog_l, MESSAGEPROG, PRINTMESSAGEVERS,
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"VISIBLE")){
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printf("Unable to create service.");
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return 1;
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}
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/* Enter the main loop of RPC */
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<strong>svc_run</strong>();
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return 0;
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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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