158 	int rc, nfds;  in kwboot_tty_recv()  local
163 	rc = -1;  in kwboot_tty_recv()
192 	rc = 0;  in kwboot_tty_recv()
194 	return rc;  in kwboot_tty_recv()
200 	int rc;  in kwboot_tty_send()  local
206 	rc = -1;  in kwboot_tty_send()
217 	rc = tcdrain(fd);  in kwboot_tty_send()
219 	return rc;  in kwboot_tty_send()
250 	int rc, fd;  in kwboot_open_tty()  local
253 	rc = -1;  in kwboot_open_tty()
270 	rc = tcsetattr(fd, TCSANOW, &tio);  in kwboot_open_tty()
271 	if (rc)  in kwboot_open_tty()
274 	rc = fd;  in kwboot_open_tty()
276 	if (rc < 0) {  in kwboot_open_tty()
281 	return rc;  in kwboot_open_tty()
287 	int rc;  in kwboot_bootmsg()  local
296 		rc = tcflush(tty, TCIOFLUSH);  in kwboot_bootmsg()
297 		if (rc)  in kwboot_bootmsg()
300 		rc = kwboot_tty_send(tty, msg, 8);  in kwboot_bootmsg()
301 		if (rc) {  in kwboot_bootmsg()
306 		rc = kwboot_tty_recv(tty, &c, 1, msg_rsp_timeo);  in kwboot_bootmsg()
310 	} while (rc || c != NAK);  in kwboot_bootmsg()
314 	return rc;  in kwboot_bootmsg()
320 	int rc;  in kwboot_debugmsg()  local
327 		rc = tcflush(tty, TCIOFLUSH);  in kwboot_debugmsg()
328 		if (rc)  in kwboot_debugmsg()
331 		rc = kwboot_tty_send(tty, msg, 8);  in kwboot_debugmsg()
332 		if (rc) {  in kwboot_debugmsg()
337 		rc = kwboot_tty_recv(tty, buf, 16, msg_rsp_timeo);  in kwboot_debugmsg()
341 	} while (rc);  in kwboot_debugmsg()
345 	return rc;  in kwboot_debugmsg()
374 	int rc, retries;  in kwboot_xm_sendblock()  local
379 		rc = kwboot_tty_send(fd, block, sizeof(*block));  in kwboot_xm_sendblock()
380 		if (rc)  in kwboot_xm_sendblock()
384 			rc = kwboot_tty_recv(fd, &c, 1, blk_rsp_timeo);  in kwboot_xm_sendblock()
385 			if (rc)  in kwboot_xm_sendblock()
398 	rc = -1;  in kwboot_xm_sendblock()
402 		rc = 0;  in kwboot_xm_sendblock()
415 	return rc;  in kwboot_xm_sendblock()
422 	int rc, pnum, N, err;  in kwboot_xmodem()  local
442 		rc = kwboot_xm_sendblock(tty, &block);  in kwboot_xmodem()
443 		if (rc)  in kwboot_xmodem()
450 	rc = kwboot_tty_send_char(tty, EOT);  in kwboot_xmodem()
453 	return rc;  in kwboot_xmodem()
505 	int rc, in, s;  in kwboot_terminal()  local
509 	rc = -1;  in kwboot_terminal()
513 		rc = tcgetattr(in, &otio);  in kwboot_terminal()
514 		if (!rc) {  in kwboot_terminal()
517 			rc = tcsetattr(in, TCSANOW, &tio);  in kwboot_terminal()
519 		if (rc) {  in kwboot_terminal()
529 	rc = 0;  in kwboot_terminal()
549 			rc = kwboot_term_pipe(tty, STDOUT_FILENO, NULL, NULL);  in kwboot_terminal()
550 			if (rc)  in kwboot_terminal()
555 			rc = kwboot_term_pipe(in, tty, quit, &s);  in kwboot_terminal()
556 			if (rc)  in kwboot_terminal()
563 	return rc;  in kwboot_terminal()
569 	int rc, fd, flags;  in kwboot_mmap_image()  local
573 	rc = -1;  in kwboot_mmap_image()
580 	rc = fstat(fd, &st);  in kwboot_mmap_image()
581 	if (rc)  in kwboot_mmap_image()
592 	rc = 0;  in kwboot_mmap_image()
595 	if (rc && img) {  in kwboot_mmap_image()
619 	int rc;  in kwboot_img_patch_hdr()  local
625 	rc = -1;  in kwboot_img_patch_hdr()
652 		rc = 0;  in kwboot_img_patch_hdr()
671 	rc = 0;  in kwboot_img_patch_hdr()
673 	return rc;  in kwboot_img_patch_hdr()
705 	int rv, rc, tty, term, prot, patch;  in main()  local
811 		rc = kwboot_img_patch_hdr(img, size);  in main()
812 		if (rc) {  in main()
819 		rc = kwboot_debugmsg(tty, debugmsg);  in main()
820 		if (rc) {  in main()
825 		rc = kwboot_bootmsg(tty, bootmsg);  in main()
826 		if (rc) {  in main()
833 		rc = kwboot_xmodem(tty, img, size);  in main()
834 		if (rc) {  in main()
841 		rc = kwboot_terminal(tty);  in main()
842 		if (rc && !(errno == EINTR)) {  in main()