commands/true.c

   1 /* true.c - true and false commands.  */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2009  Free Software Foundation, Inc.
   5  *
   6  *  GRUB 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  *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <grub/dl.h>
  21 #include <grub/command.h>
  22
  23 static grub_err_t
  24 grub_cmd_true (struct grub_command *cmd __attribute__ ((unused)),
  25                int argc __attribute__ ((unused)),
  26                char *argv[] __attribute__ ((unused)))
  27 {
  28   return 0;
  29 }
  30
  31 static grub_err_t
  32 grub_cmd_false (struct grub_command *cmd __attribute__ ((unused)),
  33                 int argc __attribute__ ((unused)),
  34                 char *argv[] __attribute__ ((unused)))
  35 {
  36   return grub_error (GRUB_ERR_TEST_FAILURE, "false");
  37 }
  38
  39 static grub_command_t cmd_true, cmd_false;
  40
  41 \f
  42 GRUB_MOD_INIT(true)
  43 {
  44   cmd_true =
  45     grub_register_command ("true", grub_cmd_true,
  46                            0, "do nothing, successfully");
  47   cmd_false =
  48     grub_register_command ("false", grub_cmd_false,
  49                            0, "do nothing, unsuccessfully");
  50 }
  51
  52 GRUB_MOD_FINI(true)
  53 {
  54   grub_unregister_command (cmd_true);
  55   grub_unregister_command (cmd_false);
  56 }