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: lzop.rs
    path of file: ./repos/rustybox/archival
    
    the code of the file until where you have to start completion: use crate::libbb::appletlib::applet_name;
use crate::librb::size_t;
use crate::librb::smallint;
use c2rust_asm_casts;
use c2rust_asm_casts::AsmCastTrait;
use libc;
use libc::free;
use libc::strcmp;
use libc::strrchr;
extern "C" {
  #[no_mangle]
  
    
unsafe fn do_lzo_decompress() -> libc::c_int {
  let mut r: libc::c_int = 0;
  let mut header: header_t = header_t {
    version_be16: 0,
    lib_version_be16: 0,
    version_needed_to_extract_be16: 0,
    method: 0,
    level: 0,
    flags32: 0,
    mode_be32: 0,
    mtime_be32: 0,
    gmtdiff_be32: 0,
    len_and_name: [0; 257],
  };
  check_magic();
  r = read_header(&mut header);
  if r != 0 {
    crate::libbb::verror_msg::bb_error_msg_and_die(
      b"header_error %d\x00" as *const u8 as *const libc::c_char,
      r,
    );
  }
  return lzo_decompress(header.flags32);
}