You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: cpio.rs
    path of file: ./repos/rustybox/archival
    
    the code of the file until where you have to start completion: use crate::archival::libarchive::bb_archive::archive_handle_t;
use crate::archival::libarchive::bb_archive::file_header_t;
use crate::libbb::xfuncs_printf::xmalloc;
use crate::librb
    
unsafe fn cpio_pad4(mut size: off_t) -> off_t {
  let mut i: libc::c_int = 0;
  i = (-size & 3i32 as libc::c_long) as libc::c_int;
  size += i as libc::c_long;
  loop {
    i -= 1;
    if !(i >= 0) {
      break;
    }
    crate::libbb::xfuncs_printf::bb_putchar('\u{0}' as i32);
  }
  return size;
}