lib/libwrap/clean_exit.c

   1 /*      $NetBSD: clean_exit.c,v 1.5 2012/03/21 10:10:37 matt Exp $      */
   2
   3  /*
   4   * clean_exit() cleans up and terminates the program. It should be called
   5   * instead of exit() when for some reason the real network daemon will not or
   6   * cannot be run. Reason: in the case of a datagram-oriented service we must
   7   * discard the not-yet received data from the client. Otherwise, inetd will
   8   * see the same datagram again and again, and go into a loop.
   9   *
  10   * Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
  11   */
  12
  13 #include <sys/cdefs.h>
  14 #ifndef lint
  15 #if 0
  16 static char sccsid[] = "@(#) clean_exit.c 1.4 94/12/28 17:42:19";
  17 #else
  18 __RCSID("$NetBSD: clean_exit.c,v 1.5 2012/03/21 10:10:37 matt Exp $");
  19 #endif
  20 #endif
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <unistd.h>
  25
  26 #include "tcpd.h"
  27
  28 /* clean_exit - clean up and exit */
  29
  30 void
  31 clean_exit(struct request_info *request)
  32 {
  33
  34     /*
  35      * In case of unconnected protocols we must eat up the not-yet received
  36      * data or inetd will loop.
  37      */
  38
  39     if (request->sink)
  40         request->sink(request->fd);
  41
  42     /*
  43      * Be kind to the inetd. We already reported the problem via the syslogd,
  44      * and there is no need for additional garbage in the logfile.
  45      */
  46
  47     sleep(5);
  48     exit(0);
  49 }