src/main.c

   1 /* Copyright (C) 2018 Thomas Balzer */
   2
   3 /* This file is part of tomd. */
   4
   5 /* tomd 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 /* tomd 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 tomd.  If not, see <http://www.gnu.org/licenses/>. */
  17
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20 #include <unistd.h>
  21
  22 static void header(void)
  23 {
  24   printf("Tom's Daemon, Copyright (C) 2018 Thomas Balzer\n");
  25   printf("GPL v3 or later license.\n");
  26 }
  27
  28 static void init(void)
  29 {
  30   /* TODO */
  31 }
  32
  33 /* These defines are here to improve the local readability */
  34 #define CHDIR            0
  35 #define DONT_CHDIR       1
  36 #define CLOSE_PIPES      0
  37 #define DONT_CLOSE_PIPES 1
  38
  39 static void daemonize(void)
  40 {
  41   /* daemon is in unistd. */
  42   /* arg1 - 0 changes dir to / */
  43   /* arg2 - 0 closes all pipes (/dev/null) */
  44   /* WARNING > THIS BEHAVIOR IS SILENT AND EASY TO MISPLACE THE
  45      PROCESS  */
  46   daemon(DONT_CHDIR, CLOSE_PIPES);
  47 }
  48
  49 static void run(void)
  50 {
  51   /* listen on socket, respond to requests. */
  52   /* perform all registered 'tick' operations */
  53 }
  54
  55 int main(int argc, char **argv)
  56 {
  57   header();
  58   init();
  59   daemonize();
  60   run();
  61
  62   return EXIT_SUCCESS;
  63 }