- if (demand && connect_script == 0) {
- option_error("connect script is required for demand-dialling\n");
- exit(EXIT_OPTION_ERROR);
- }
- /* default holdoff to 0 if no connect script has been given */
- if (connect_script == 0 && !holdoff_specified)
- holdoff = 0;
-
- if (using_pty) {
- if (!default_device) {
- option_error("%s option precludes specifying device name",
- notty? "notty": "pty");
- exit(EXIT_OPTION_ERROR);
- }
- if (ptycommand != NULL && notty) {
- option_error("pty option is incompatible with notty option");
- exit(EXIT_OPTION_ERROR);
- }
- if (pty_socket != NULL && (ptycommand != NULL || notty)) {
- option_error("socket option is incompatible with pty and notty");
- exit(EXIT_OPTION_ERROR);
- }
- default_device = notty;
- lockflag = 0;
- modem = 0;
- if (notty && log_to_fd <= 1)
- log_to_fd = -1;
- } else {
- /*
- * If the user has specified a device which is the same as
- * the one on stdin, pretend they didn't specify any.
- * If the device is already open read/write on stdin,
- * we assume we don't need to lock it, and we can open it as root.
- */
- if (fstat(0, &statbuf) >= 0 && S_ISCHR(statbuf.st_mode)
- && statbuf.st_rdev == devstat.st_rdev) {
- default_device = 1;
- fdflags = fcntl(0, F_GETFL);
- if (fdflags != -1 && (fdflags & O_ACCMODE) == O_RDWR)
- privopen = 1;
- }
- }
- if (default_device)
- nodetach = 1;
-
- /*
- * Don't send log messages to the serial port, it tends to
- * confuse the peer. :-)
- */
- if (log_to_fd >= 0 && fstat(log_to_fd, &statbuf) >= 0
- && S_ISCHR(statbuf.st_mode) && statbuf.st_rdev == devstat.st_rdev)
- log_to_fd = -1;