181 static int master_fd = -1;	/* pty for old-style demand mode, master */  variable
377     if (master_fd >= 0)  in sys_close()
378 	close(master_fd);  in sys_close()
700 	int master_fd;  in bundle_attach()  local
705 	master_fd = open("/dev/ppp", O_RDWR);  in bundle_attach()
706 	if (master_fd < 0)  in bundle_attach()
708 	if (ioctl(master_fd, PPPIOCATTACH, &ifnum) < 0) {  in bundle_attach()
710 			close(master_fd);  in bundle_attach()
717 	modify_flags(master_fd, 0, SC_MULTILINK);  in bundle_attach()
718 	close(master_fd);  in bundle_attach()
1175     while ((n = read(master_fd, inbuf, sizeof(inbuf))) > 0)  in get_loop_output()
2703     if (!get_pty(&master_fd, &slave_fd, loop_name, 0))  in open_ppp_loopback()
2708     flags = fcntl(master_fd, F_GETFL);  in open_ppp_loopback()
2710 	fcntl(master_fd, F_SETFL, flags | O_NONBLOCK) == -1)  in open_ppp_loopback()
2730     return master_fd;  in open_ppp_loopback()