usr/src/lib/libwrap/clean_exit.c

   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 }