src/networkd/config.c

   1 /*#############################################################################
   2 #                                                                             #
   3 # IPFire.org - A linux based firewall                                         #
   4 # Copyright (C) 2023 IPFire Network Development Team                          #
   5 #                                                                             #
   6 # This program is free software: you can redistribute it and/or modify        #
   7 # it under the terms of the GNU General Public License as published by        #
   8 # the Free Software Foundation, either version 3 of the License, or           #
   9 # (at your option) any later version.                                         #
  10 #                                                                             #
  11 # This program is distributed in the hope that it will be useful,             #
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  14 # GNU General Public License for more details.                                #
  15 #                                                                             #
  16 # You should have received a copy of the GNU General Public License           #
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  18 #                                                                             #
  19 #############################################################################*/
  20
  21 #include <stdlib.h>
  22
  23 #include "config.h"
  24
  25 struct nw_config {
  26         int nrefs;
  27 };
  28
  29 static void nw_config_free(struct nw_config* config) {
  30         free(config);
  31 }
  32
  33 int nw_config_create(struct nw_config** config) {
  34         struct nw_config* c = calloc(1, sizeof(*c));
  35         if (!c)
  36                 return 1;
  37
  38         // Initialize reference counter
  39         c->nrefs = 1;
  40
  41         *config = c;
  42
  43         return 0;
  44 }
  45
  46 struct nw_config* nw_config_ref(struct nw_config* config) {
  47         config->nrefs++;
  48
  49         return config;
  50 }
  51
  52 struct nw_config* nw_config_unref(struct nw_config* config) {
  53         if (--config->nrefs > 0)
  54                 return config;
  55
  56         nw_config_free(config);
  57         return NULL;
  58 }