int grub_fat_get_file_chunk(grub_uint64_t part_start, grub_file_t file, ventoy_img_chunk_list *chunk_list);
grub_uint64_t grub_iso9660_get_last_read_pos(grub_file_t file);
grub_uint64_t grub_iso9660_get_last_file_dirent_pos(grub_file_t file);
int grub_fat_get_file_chunk(grub_uint64_t part_start, grub_file_t file, ventoy_img_chunk_list *chunk_list);
grub_uint64_t grub_iso9660_get_last_read_pos(grub_file_t file);
grub_uint64_t grub_iso9660_get_last_file_dirent_pos(grub_file_t file);