log_common
log_common(LOG_CRIT, errno, fmt, ap);
log_common(LOG_CRIT, code, fmt, ap);
log_common(LOG_CRIT, -1, fmt, ap);
log_common(LOG_WARNING, errno, fmt, ap);
log_common(LOG_WARNING, code, fmt, ap);
log_common(LOG_WARNING, -1, fmt, ap);
log_common(LOG_DEBUG, -1, fmt, ap);
log_common(LOG_CRIT, errno, fmt, ap);
log_common(LOG_CRIT, -1, fmt, ap);
log_common(LOG_WARNING, errno, fmt, ap);
log_common(LOG_WARNING, -1, fmt, ap);
log_common(LOG_DEBUG, -1, fmt, ap);