Function update_file_path

plugin/server_audit/server_audit.cc:2286–2340

static void update_file_path(MYSQL_THD thd, st_mysql_sys_var *, void *,
                             const void *save)
{
  char *new_name= *static_cast<char*const*>(save);
  if (!new_name)
    new_name= empty_str;
  else if (strlen(new_name) + 4  > FN_REFLEN)
  {
    error_header();
    fprintf(stderr,
            "server_audit_file_path can't exceed %d characters.\n",
            FN_REFLEN - 4);
    fprintf(stderr, "Log filename remains unchanged '%s'.\n", file_path);
    CLIENT_ERROR(1, "server_audit_file_path can't exceed %d characters.",
                 MYF(ME_WARNING), FN_REFLEN - 4);
    return;
  }

  lock_operations.wr_lock();
  internal_stop_logging++;
  error_header();
  fprintf(stderr, "Log file name was changed to '%s'.\n", new_name);

  if (logging)
    log_current_query(thd);

  if (logging && output_type == OUTPUT_FILE)
  {
    char *sav_path= file_path;

    file_path= new_name;
    stop_logging();
    if (start_logging())
    {
      file_path= sav_path;
      error_header();
      fprintf(stderr, "Reverting log filename back to '%s'.\n", file_path);
      logging= (start_logging() == 0);
      if (!logging)
      {
        error_header();
        fprintf(stderr, "Logging was disabled..\n");
        CLIENT_ERROR(1, "Logging was disabled.", MYF(ME_WARNING));
      }
      goto exit_func;
    }
  }

  strncpy(path_buffer, new_name, sizeof(path_buffer)-1);
  path_buffer[sizeof(path_buffer)-1]= 0;
  file_path= path_buffer;
exit_func:
  internal_stop_logging--;
  lock_operations.wr_unlock();
}


static int check_timestamp_format(MYSQL_THD thd, st_mysql_sys_var *,