Function main

src/dd.c:2404–2549

}

int
main (int argc, char **argv)
{
  off_t offset;

  install_signal_handlers ();

  initialize_main (&argc, &argv);
  set_program_name (argv[0]);
  setlocale (LC_ALL, "");
  bindtextdomain (PACKAGE, LOCALEDIR);
  textdomain (PACKAGE);

  /* Arrange to close stdout if parse_long_options exits.  */
  atexit (maybe_close_stdout);

  page_size = getpagesize ();

  parse_gnu_standard_options_only (argc, argv, PROGRAM_NAME, PACKAGE, Version,
                                   true, usage, AUTHORS,
                                   (char const *) NULL);
  close_stdout_required = false;

  /* Initialize translation table to identity translation. */
  for (int i = 0; i < 256; i++)
    trans_table[i] = i;

  /* Decode arguments. */
  scanargs (argc, argv);

  apply_translations ();

  if (input_file == NULL)
    {
      input_file = _("standard input");
      set_fd_flags (STDIN_FILENO, input_flags, input_file);
    }
  else
    {
      if (ifd_reopen (STDIN_FILENO, input_file, O_RDONLY | input_flags, 0) < 0)
        error (EXIT_FAILURE, errno, _("failed to open %s"),
               quoteaf (input_file));
    }

  offset = lseek (STDIN_FILENO, 0, SEEK_CUR);
  input_seekable = (0 <= offset);
  input_offset = MAX (0, offset);
  input_seek_errno = errno;

  if (output_file == NULL)
    {
      output_file = _("standard output");
      set_fd_flags (STDOUT_FILENO, output_flags, output_file);
    }
  else
    {
      mode_t perms = MODE_RW_UGO;
      int opts