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: patch.rs
    path of file: ./repos/rustybox/editors
    
    the code of the file until where you have to start completion: use crate::libbb::xfuncs_printf::xmalloc;
use crate::librb::size_t;
use libc;
use libc::atoi;
use libc::close;
use libc::fchmod;
use libc::free;
use libc::fstat;
use libc::printf;
use libc::rename;
use libc::stat;
use libc::strcmp;
use libc::strrchr;
use libc::unlink;
use libc::FILE;
extern "C" {

  #[no_mangle]
  fn strtol(
    __nptr: *const libc::c_char,
    __endptr: *mut *mut libc::c_char,
    __base: libc::c_int,
  ) -> libc::c_long;

  #[no_mangle]
  static ptr_to_globals: *mut globals;
  #[no
    
unsafe fn finish_oldfile() {
  if !(*ptr_to_globals).tempname.is_null() {
    // Copy the rest of the data and replace the original with the copy.
    let mut temp: *mut libc::c_char = std::ptr::null_mut::<libc::c_char>();
    if (*ptr_to_globals).filein != -1i32 {
      crate::libbb::copyfd::bb_copyfd_eof((*ptr_to_globals).filein, (*ptr_to_globals).fileout);
      crate::libbb::xfuncs_printf::xclose((*ptr_to_globals).filein);
    }
    crate::libbb::xfuncs_printf::xclose((*ptr_to_globals).fileout);
    if 1i32 == 0 || *(*ptr_to_globals).tempname.offset(0) as libc::c_int != 0 {
      /* not --dry-run? */
      temp = crate::libbb::xfuncs_printf::xstrdup((*ptr_to_globals).tempname);
      *temp.offset(strlen(temp).wrapping_sub(6i32 as libc::c_ulong) as isize) =
        '\u{0}' as i32 as libc::c_char;
      rename((*ptr_to_globals).tempname, temp);
      free(temp as *mut libc::c_void);
      free((*ptr_to_globals).tempname as *mut libc::c_void);
    }
    (*ptr_to_globals).tempname = std::ptr::null_mut::<libc::c_char>()
  }
  (*ptr_to_globals).filein = -1i32;
  (*ptr_to_globals).fileout = (*ptr_to_globals).filein;
}