src/sync.c

   1 /* sync - update the super block
   2    Copyright (C) 1994-2004, 2008-2010 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     fprintf (stderr, _("Try `%s --help' for more information.\n"),
  38              program_name);
  39   else
  40     {
  41       printf (_("Usage: %s [OPTION]\n"), program_name);
  42       fputs (_("\
  43 Force changed blocks to disk, update the super block.\n\
  44 \n\
  45 "), stdout);
  46       fputs (HELP_OPTION_DESCRIPTION, stdout);
  47       fputs (VERSION_OPTION_DESCRIPTION, stdout);
  48       emit_ancillary_info ();
  49     }
  50   exit (status);
  51 }
  52
  53 int
  54 main (int argc, char **argv)
  55 {
  56   initialize_main (&argc, &argv);
  57   set_program_name (argv[0]);
  58   setlocale (LC_ALL, "");
  59   bindtextdomain (PACKAGE, LOCALEDIR);
  60   textdomain (PACKAGE);
  61
  62   atexit (close_stdout);
  63
  64   parse_long_options (argc, argv, PROGRAM_NAME, PACKAGE, Version,
  65                       usage, AUTHORS, (char const *) NULL);
  66   if (getopt_long (argc, argv, "", NULL, NULL) != -1)
  67     usage (EXIT_FAILURE);
  68
  69   if (optind < argc)
  70     error (0, 0, _("ignoring all arguments"));
  71
  72   sync ();
  73   exit (EXIT_SUCCESS);
  74 }