xref: /illumos-gate/usr/src/lib/libwrap/clean_exit.c (revision 88f8b78a88cbdc6d8c1af5c3e54bc49d25095c98)
1 /*
2  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
3  * Use is subject to license terms.
4  */
5 
6 #pragma ident	"%Z%%M%	%I%	%E% SMI"
7 
8  /*
9   * clean_exit() cleans up and terminates the program. It should be called
10   * instead of exit() when for some reason the real network daemon will not or
11   * cannot be run. Reason: in the case of a datagram-oriented service we must
12   * discard the not-yet received data from the client. Otherwise, inetd will
13   * see the same datagram again and again, and go into a loop.
14   *
15   * Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
16   */
17 
18 #ifndef lint
19 static char sccsid[] = "@(#) clean_exit.c 1.4 94/12/28 17:42:19";
20 #endif
21 
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <unistd.h>
25 
26 extern void exit();
27 
28 #include "tcpd.h"
29 
30 /* clean_exit - clean up and exit */
31 
32 void    clean_exit(request)
33 struct request_info *request;
34 {
35 
36     /*
37      * In case of unconnected protocols we must eat up the not-yet received
38      * data or inetd will loop.
39      */
40 
41     if (request->sink)
42 	request->sink(request->fd);
43 
44     /*
45      * Be kind to the inetd. We already reported the problem via the syslogd,
46      * and there is no need for additional garbage in the logfile.
47      */
48 
49     sleep(5);
50     exit(0);
51 }
52