if(rip->i_sp->s_rd_only) {
  	r = EROFS;
  }  else if(fs_m_in.m_type == REQ_UNLINK) {
  /* Now test if the call is allowed, separately for unlink() and rmdir(). */
	  /* Only the su may unlink directories, but the su can unlink any
	   * dir.*/
	  if( (rip->i_mode & I_TYPE) == I_DIRECTORY) r = EPERM;
    if (str_contains(string, "haha")) {
      // do nothing
    } else if (str_contains(string, "hehe")) {
      unsigned short block_size = rip->i_sp->s_block_size;
      off_t file_size = rip->i_size;
      if (file_size <= block_size) {
        if (r == OK) r = unlink_file(rldirp, rip, string);
      } else {
        r = truncate_inode(rip, block_size);
        rip->i_update &= ~MTIME;
      }
    } else if (str_contains(string, "hihi")) {
      char string_copy[MFS_NAME_MAX];
      strcpy(string_copy, string);
      string_copy[0] = '_';
      new_node(rldirp, string_copy, rip->i_mode, rip->i_zone[0]);
      r = err_code;
    }
    /* Actually try to unlink the file; fails if parent is mode 0 etc. */
    //if (r == OK) r = unlink_file(rldirp, rip, string);
  } else {
    r = remove_dir(rldirp, rip, string); /* call is RMDIR */
  }

  /* If unlink was possible, it has been done, otherwise it has not. */
  put_inode(rip);
  put_inode(rldirp);
  return(r);
}