C++ (Cpp) sparse_select_optab примеры использования

Пример #1

bool
sparse_diff_file (int fd, struct tar_stat_info *st)
{
  bool rc = true;
  struct tar_sparse_file file;
  size_t i;
  off_t offset = 0;

  file.stat_info = st;
  file.fd = fd;

  if (!sparse_select_optab (&file)
      || !tar_sparse_init (&file))
    return dump_status_not_implemented;

  rc = tar_sparse_decode_header (&file);
  for (i = 0; rc && i < file.stat_info->sparse_map_avail; i++)
    {
      rc = check_sparse_region (&file,
				offset, file.stat_info->sparse_map[i].offset)
	&& check_data_region (&file, i);
      offset = file.stat_info->sparse_map[i].offset
	        + file.stat_info->sparse_map[i].numbytes;
    }

  if (!rc)
    skip_file (file.stat_info->archive_file_size - file.dumped_size);

  tar_sparse_done (&file);
  return rc;
}

Пример #2

/* Interface functions */
enum dump_status
sparse_dump_file (int fd, struct tar_stat_info *st)
{
  bool rc;
  struct tar_sparse_file file;

  file.stat_info = st;
  file.fd = fd;

  if (!sparse_select_optab (&file)
      || !tar_sparse_init (&file))
    return dump_status_not_implemented;

  rc = sparse_scan_file (&file);
  if (rc && file.optab->dump_region)
    {
      tar_sparse_dump_header (&file);

      if (fd >= 0)
	{
	  size_t i;

	  for (i = 0; rc && i < file.stat_info->sparse_map_avail; i++)
	    rc = tar_sparse_dump_region (&file, i);
	}
    }

  pad_archive(file.stat_info->archive_file_size - file.dumped_size);
  return (tar_sparse_done (&file) && rc) ? dump_status_ok : dump_status_short;
}

Пример #3

bool
sparse_fixup_header (struct tar_stat_info *st)
{
  struct tar_sparse_file file;

  if (!sparse_select_optab (&file))
    return false;
  file.stat_info = st;
  return tar_sparse_fixup_header (&file);
}

Пример #4

bool
sparse_member_p (struct tar_stat_info *st)
{
  struct tar_sparse_file file;

  if (!sparse_select_optab (&file))
    return false;
  file.stat_info = st;
  return tar_sparse_member_p (&file);
}

Пример #5

Файл: sparse.c Проект: jelaas/bifrost-build

static bool
tar_sparse_init (struct tar_sparse_file *file)
{
  memset (file, 0, sizeof *file);

  if (!sparse_select_optab (file))
    return false;

  if (file->optab->init)
    return file->optab->init (file);

  return true;
}

Пример #6

enum dump_status
sparse_skip_file (struct tar_stat_info *st)
{
  bool rc = true;
  struct tar_sparse_file file;

  file.stat_info = st;
  file.fd = -1;

  if (!sparse_select_optab (&file)
      || !tar_sparse_init (&file))
    return dump_status_not_implemented;

  rc = tar_sparse_decode_header (&file);
  skip_file (file.stat_info->archive_file_size);
  return (tar_sparse_done (&file) && rc) ? dump_status_ok : dump_status_short;
}

Пример #7

enum dump_status
sparse_extract_file (int fd, struct tar_stat_info *st, off_t *size)
{
  bool rc = true;
  struct tar_sparse_file file;
  size_t i;

  file.stat_info = st;
  file.fd = fd;

  if (!sparse_select_optab (&file)
      || !tar_sparse_init (&file))
    return dump_status_not_implemented;

  rc = tar_sparse_decode_header (&file);
  for (i = 0; rc && i < file.stat_info->sparse_map_avail; i++)
    rc = tar_sparse_extract_region (&file, i);
  *size = file.stat_info->archive_file_size - file.dumped_size;
  return (tar_sparse_done (&file) && rc) ? dump_status_ok : dump_status_short;
}