ftp_timeout
new.sa_handler = ftp_timeout;
static void ftp_timeout(int sig);
ftp_timeout = strtol(s, &end, 10);
if (*s == '\0' || *end != '\0' || ftp_timeout < 0) {
ftp_timeout = 0;
timeout = T_secs ? T_secs : ftp_timeout;
static long ftp_timeout = TIMEOUT; /* default timeout for FTP transfers */