diff options
| -rwxr-xr-x | util/uart_stress_tester.py | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/util/uart_stress_tester.py b/util/uart_stress_tester.py index 2dd5e12515..13828fe84e 100755 --- a/util/uart_stress_tester.py +++ b/util/uart_stress_tester.py @@ -23,6 +23,8 @@ from chromite.lib import cros_logging as logging import argparse import atexit import serial +import os +import stat import sys import threading import time @@ -381,10 +383,20 @@ class ChargenTest(object): ports: List of UART ports to test. duration: Time to keep testing in seconds. cr50_workload: True if a workload should be generated on cr50 + + Raises: + ChargenTestError: if any of ports is not a valid character device. """ # Save the arguments self.ports = ports + for port in ports: + try: + mode = os.stat(port).st_mode + except OSError as e: + raise ChargenTestError(e) + if not stat.S_ISCHR(mode): + raise ChargenTestError('%s is not a character device.' % port) if duration <= 0: raise ChargenTestError('Input error: duration is not positive.') |