server/src/signal.c

   1 /*
   2  *  tunnel6
   3  *  Copyright (C) 2010  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *
   5  *  This program is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19
  20 #include <stdio.h>
  21 #include <string.h>
  22 #include <signal.h>
  23 #include <unistd.h>
  24 #include "defaults.h"
  25
  26 extern int cont;
  27
  28 static void signal_term (int z)
  29 {
  30         printf ("> WARNING -> term signal -> type %d\n", z);
  31
  32         cont = 0;
  33 }
  34
  35 int signal_init ()
  36 {
  37         struct sigaction sv;
  38
  39         memset (&sv, 0, sizeof (struct sigaction));
  40         sv.sa_flags = 0;
  41         sigemptyset (&sv.sa_mask);
  42
  43         sv.sa_handler = SIG_IGN;
  44
  45         /* Don't want broken pipes to kill the server.  */
  46         sigaction (SIGPIPE, &sv, NULL);
  47
  48         /* ...or any defunct child processes.  */
  49         sigaction (SIGCHLD, &sv, NULL);
  50
  51         sv.sa_handler = signal_term;
  52
  53         /* Also, shut down properly.  */
  54         sigaction (SIGTERM, &sv, NULL);
  55         sigaction (SIGINT, &sv, NULL);
  56
  57         return 0;
  58 }