147 initmaster(int f UNUSED)  in initmaster()
151     tcflush(f, TCIOFLUSH);  in initmaster()
154     (void)ioctl(f, TIOCFLUSH, (char *) 0);  in initmaster()
158     (void)ioctl(f, TIOCEXCL, (char *) 0);  in initmaster()
193     int		f;  in mch_openpty()  local
198     if ((f = posix_openpt(O_RDWR | O_NOCTTY | O_EXTRA)) == -1)  in mch_openpty()
204     if ((m = ptsname(f)) == NULL || grantpt(f) || unlockpt(f))  in mch_openpty()
207 	close(f);  in mch_openpty()
212     initmaster(f);  in mch_openpty()
214     return f;  in mch_openpty()
223     int		f;  in mch_openpty()  local
226     if ((f = open_controlling_pty(TtyName)) < 0)  in mch_openpty()
228     initmaster(f);  in mch_openpty()
230     return f;  in mch_openpty()
241     int		f;  in mch_openpty()  local
246     if ((f = getpseudotty(&s, &m)) < 0)  in mch_openpty()
253     initmaster(f);  in mch_openpty()
255     return f;  in mch_openpty()
264     int f;  in mch_openpty()  local
273     name = _getpty(&f, O_RDWR | O_NONBLOCK | O_EXTRA, 0600, 0);  in mch_openpty()
278     initmaster(f);  in mch_openpty()
280     return f;  in mch_openpty()
289     int		f;  in mch_openpty()  local
294     if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_NONBLOCK | O_EXTRA, 0)) < 0)  in mch_openpty()
296     if (mch_fstat(f, &buf) < 0)  in mch_openpty()
298 	close(f);  in mch_openpty()
302     initmaster(f);  in mch_openpty()
304     return f;  in mch_openpty()
317     int		f;  in mch_openpty()  local
323     if ((f = open("/dev/ptmx", O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1)  in mch_openpty()
331     if ((m = ptsname(f)) == NULL || grantpt(f) || unlockpt(f))  in mch_openpty()
334 	close(f);  in mch_openpty()
339     initmaster(f);  in mch_openpty()
341     return f;  in mch_openpty()
355     int		f;  in mch_openpty()  local
360     if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_EXTRA)) < 0)  in mch_openpty()
362     vim_strncpy((char_u *)TtyName, (char_u *)ttyname(f), sizeof(TtyName) - 1);  in mch_openpty()
365 	close(f);  in mch_openpty()
368     initmaster(f);  in mch_openpty()
374 	close(f);  in mch_openpty()
379     return f;  in mch_openpty()
402     int		f;  in mch_openpty()  local
417 	    if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1)  in mch_openpty()
423 		close(f);  in mch_openpty()
433 		if (ioctl(f, TIOCGPGRP, (char *)&pgrp) != -1 || errno != EIO)  in mch_openpty()
435 		    close(f);  in mch_openpty()
440 	    initmaster(f);  in mch_openpty()
442 	    return f;  in mch_openpty()