LOG_LINE_LEN
char logbuf[LOG_LINE_LEN];
ret = vsnprintf(logbuf, LOG_LINE_LEN, format, args);
if ((LOG_LINE_LEN > ret + 3) && (level & NTFS_LOG_LEVEL_PERROR)) {
strncat(logbuf, ": ", LOG_LINE_LEN - ret - 1);
strncat(logbuf, strerror(olderr), LOG_LINE_LEN - (ret + 3));