src/ac-power/ac-power.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2010 Lennart Poettering
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include "util.h"
  21
  22 int main(int argc, char *argv[]) {
  23         int r;
  24
  25         /* This is mostly intended to be used for scripts which want
  26          * to detect whether AC power is plugged in or not. */
  27
  28         r = on_ac_power();
  29         if (r < 0) {
  30                 log_error_errno(r, "Failed to read AC status: %m");
  31                 return EXIT_FAILURE;
  32         }
  33
  34         return r != 0 ? EXIT_SUCCESS : EXIT_FAILURE;
  35 }