contrib/tcp_wrappers/clean_exit.c

   1  /*
   2   * clean_exit() cleans up and terminates the program. It should be called
   3   * instead of exit() when for some reason the real network daemon will not or
   4   * cannot be run. Reason: in the case of a datagram-oriented service we must
   5   * discard the not-yet received data from the client. Otherwise, inetd will
   6   * see the same datagram again and again, and go into a loop.
   7   *
   8   * Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
   9   */
  10
  11 #include <stdio.h>
  12 #include <unistd.h>
  13
  14 extern void exit();
  15
  16 #include "tcpd.h"
  17
  18 /* clean_exit - clean up and exit */
  19
  20 void    clean_exit(request)
  21 struct request_info *request;
  22 {
  23
  24     /*
  25      * In case of unconnected protocols we must eat up the not-yet received
  26      * data or inetd will loop.
  27      */
  28
  29     if (request->sink)
  30         request->sink(request->fd);
  31
  32     /*
  33      * Be kind to the inetd. We already reported the problem via the syslogd,
  34      * and there is no need for additional garbage in the logfile.
  35      */
  36
  37     sleep(5);
  38     exit(0);
  39 }