src/sync.c

   1 /* sync - update the super block
   2    Copyright (C) 1994-2004, 2008-2012 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Jim Meyering */
  18
  19 #include <config.h>
  20 #include <getopt.h>
  21 #include <stdio.h>
  22 #include <sys/types.h>
  23
  24 #include "system.h"
  25 #include "error.h"
  26 #include "long-options.h"
  27
  28 /* The official name of this program (e.g., no `g' prefix).  */
  29 #define PROGRAM_NAME "sync"
  30
  31 #define AUTHORS proper_name ("Jim Meyering")
  32
  33 void
  34 usage (int status)
  35 {
  36   if (status != EXIT_SUCCESS)
  37     emit_try_help ();
  38   else
  39     {
  40       printf (_("Usage: %s [OPTION]\n"), program_name);
  41       fputs (_("\
  42 Force changed blocks to disk, update the super block.\n\
  43 \n\
  44 "), stdout);
  45       fputs (HELP_OPTION_DESCRIPTION, stdout);
  46       fputs (VERSION_OPTION_DESCRIPTION, stdout);
  47       emit_ancillary_info ();
  48     }
  49   exit (status);
  50 }
  51
  52 int
  53 main (int argc, char **argv)
  54 {
  55   initialize_main (&argc, &argv);
  56   set_program_name (argv[0]);
  57   setlocale (LC_ALL, "");
  58   bindtextdomain (PACKAGE, LOCALEDIR);
  59   textdomain (PACKAGE);
  60
  61   atexit (close_stdout);
  62
  63   parse_long_options (argc, argv, PROGRAM_NAME, PACKAGE, Version,
  64                       usage, AUTHORS, (char const *) NULL);
  65   if (getopt_long (argc, argv, "", NULL, NULL) != -1)
  66     usage (EXIT_FAILURE);
  67
  68   if (optind < argc)
  69     error (0, 0, _("ignoring all arguments"));
  70
  71   sync ();
  72   exit (EXIT_SUCCESS);
  73 }