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#!/usr/bin/env python3
# Copyright VyOS maintainers and contributors <maintainers@vyos.io>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
import unittest
from base_vyostest_shim import VyOSUnitTestSHIM
from vyos.utils.process import cmd
base_path = ['system', 'watchdog']
class TestSystemWatchdog(VyOSUnitTestSHIM.TestCase):
def tearDown(self):
self.cli_delete(base_path)
self.cli_commit()
super().tearDown()
def test_enable_watchdog_softdog(self):
"""Configure watchdog (presence enables) with softdog and check state"""
# Presence of 'system watchdog' enables watchdog; set module to softdog
self.cli_set(base_path)
self.cli_set(base_path + ['module', 'softdog'])
self.cli_commit()
# Check if softdog module is loaded
lsmod = cmd('lsmod')
self.assertIn('softdog', lsmod)
# Check /dev/watchdog0 exists
self.assertTrue(
os.path.exists('/dev/watchdog0'), '/dev/watchdog0 does not exist'
)
# Check systemd config file exists
config_path = '/run/systemd/system.conf.d/watchdog.conf'
self.assertTrue(
os.path.exists(config_path), f"Systemd config file not found: {config_path}"
)
def test_invalid_module_rejected(self):
"""Verify that a non-existent watchdog module causes commit failure"""
# Choose a module name unlikely to exist; include a prefix to avoid collision with real names
bogus_module = 'zzzx_watchdog_unit_test_fake'
self.cli_set(base_path)
# Module validation is preferred at set-time. Depending on the test harness,
# this may raise on cli_set() or on cli_commit(). Accept either.
try:
self.cli_set(base_path + ['module', bogus_module])
except Exception as e:
self.assertRegex(
str(e), r"Module must be an available watchdog kernel driver module"
)
return
# If set-time validation did not trigger, commit-time validation must.
with self.assertRaisesRegex(
Exception,
r"Watchdog( driver)? module '.*' was not found or cannot be loaded",
):
self.cli_commit()
def test_timeout_upper_limit(self):
"""Verify watchdog timeout upper bound (65535) is enforced"""
self.cli_set(base_path)
self.cli_set(base_path + ['module', 'softdog'])
# 65535 must be accepted
self.cli_set(base_path + ['timeout', '65535'])
self.cli_commit()
# 65536 must be rejected (ideally at set-time by XML validator)
try:
self.cli_set(base_path + ['timeout', '65536'])
except Exception as e:
# Error message depends on validator/harness formatting
self.assertRegex(str(e), r"65535|Timeout must be between")
return
with self.assertRaisesRegex(Exception, r"65535|Timeout must be between"):
self.cli_commit()
def test_shutdown_and_reboot_timeout_written(self):
"""Verify shutdown-timeout and reboot-timeout are applied to systemd config"""
self.cli_set(base_path)
self.cli_set(base_path + ['module', 'softdog'])
# Lowest valid values
self.cli_set(base_path + ['shutdown-timeout', '60'])
self.cli_set(base_path + ['reboot-timeout', '60'])
self.cli_commit()
config_path = '/run/systemd/system.conf.d/watchdog.conf'
with open(config_path, 'r') as f:
conf = f.read()
self.assertIn('ShutdownWatchdogSec=60', conf)
self.assertIn('RebootWatchdogSec=60', conf)
# Highest valid values
self.cli_set(base_path + ['shutdown-timeout', '65535'])
self.cli_set(base_path + ['reboot-timeout', '65535'])
self.cli_commit()
with open(config_path, 'r') as f:
conf = f.read()
self.assertIn('ShutdownWatchdogSec=65535', conf)
self.assertIn('RebootWatchdogSec=65535', conf)
def test_shutdown_and_reboot_timeout_lower_bound(self):
"""Verify shutdown-timeout/reboot-timeout enforce lower bound (60)"""
self.cli_set(base_path)
self.cli_set(base_path + ['module', 'softdog'])
self.cli_commit()
for key in ['shutdown-timeout', 'reboot-timeout']:
try:
self.cli_set(base_path + [key, '59'])
except Exception as e:
self.assertRegex(
str(e), r"60|timeout must be between|Timeout must be between"
)
continue
with self.assertRaisesRegex(
Exception, r"60|timeout must be between|Timeout must be between"
):
self.cli_commit()
if __name__ == '__main__':
unittest.main(verbosity=2, failfast=VyOSUnitTestSHIM.TestCase.debug_on())
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