generic/tty/tty.cpp

593 	status_t status = fRequestOwner.Wait(true);
598 	if (status == B_OK) {
600 		status = fRequestOwner.Error();
603 	if (status == B_OK)
604 		status = _CheckBackgroundWrite();
606 	if (status == B_OK)
609 	return status;
674 	status_t status = _CheckBackgroundRead();
675 	if (status != B_OK)
676 		return status;
702 	status = fRequestOwner.Wait(true, timeout);
705 	if (status == B_OK)
706 		status = _CheckBackgroundRead();
710 	TRACE(("ReaderLocker::AcquireReader() ended status 0x%" B_PRIx32 "\n",
711 		status));
713 	return status;
1103 	status_t status = locker.AcquireWriter(dontBlock, 0);
1104 	if (status != B_OK) {
1106 		return status;
1142 			status = locker.AcquireWriter(dontBlock, bytesNeeded);
1143 			if (status != B_OK) {
1145 				return *_length == 0 ? status : B_OK;
1205 	status_t status = locker.AcquireWriter(dontBlock, 0);
1206 	if (status != B_OK) {
1208 		return status;
1227 			status = locker.AcquireWriter(dontBlock, bytesNeeded);
1228 			if (status != B_OK) {
1230 				return *_length == 0 ? status : B_OK;
1301 		status_t status = user_memcpy(safeBuffer, buffer, toWrite);
1302 		if (status != B_OK)
1303 			return status;
1307 		status = tty_write_to_tty_slave_unsafe(sourceCookie, safeBuffer,
1309 		if (status != B_OK)
1310 			return *_length == 0 ? status : B_OK;
1361 	status_t status = init_line_buffer(tty->input_buffer, TTY_BUFFER_SIZE);
1363 	if (status < B_OK) {
1369 		return status;
1407 		status_t status = cookie->blocking_semaphore;
1409 		return status;
1607 	status_t status;
1613 		status = locker.AcquireReader(timeout, bytesNeeded);
1615 		if (status != B_OK && toRead == 0) {
1629 			status = bytesRead;
1651 	if (status == B_WOULD_BLOCK || status == B_TIMED_OUT) {
1655 			status = B_OK;
1658 	TRACE(("tty_input_read() status 0x%" B_PRIx32 "\n", status));
1660 	return *_length == 0 ? status : B_OK;
1715 			status_t status = user_memcpy(&tty->settings->termios, buffer,
1717 			if (status != B_OK)
1718 				return status;
1722 			return status;
1824 				status_t status = readLocker.AcquireReader(timeout, wanted);
1825 				if (status != B_OK)
1826 					return status;
1845 			status_t status = readLocker.AcquireReader(0, 1);
1846 			if (status == B_OK)
1848 			else if (status != B_WOULD_BLOCK)
1849 				return status;
1865 			status_t status = writeLocker.AcquireWriter(0, 1);
1866 			if (status == B_OK)
1868 			else if (status != B_WOULD_BLOCK)
1869 				return status;