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#!/usr/bin/env python3
# SPDX-License-Identifier: LGPL-2.1-only
#
# Basic cgrules functionality test
#
# Copyright (c) 2021 Oracle and/or its affiliates.
# Author: Tom Hromatka <tom.hromatka@oracle.com>
#
from cgroup import Cgroup, CgroupVersion
from process import Process
import consts
import ftests
import sys
import os
CONTROLLER = 'cpu'
PARENT_CGNAME = '006cgrules'
CHILD_CGNAME = 'childcg'
# move all perl processes to the 006cgrules/childcg cgroup in the
# cpu controller
CGRULE = (
'*:/usr/bin/perl cpu {}'
''.format(os.path.join(PARENT_CGNAME, CHILD_CGNAME))
)
cg = Cgroup(os.path.join(PARENT_CGNAME, CHILD_CGNAME))
def prereqs(config):
result = consts.TEST_PASSED
cause = None
if config.args.container:
result = consts.TEST_SKIPPED
cause = 'This test cannot be run within a container'
return result, cause
if CgroupVersion.get_version('cpu') != CgroupVersion.CGROUP_V1:
result = consts.TEST_SKIPPED
cause = 'This test requires the cgroup v1 cpu controller'
return result, cause
def setup(config):
Cgroup.create(config, CONTROLLER, PARENT_CGNAME)
Cgroup.create(config, CONTROLLER,
os.path.join(PARENT_CGNAME, CHILD_CGNAME))
Cgroup.set_cgrules_conf(config, CGRULE, append=False)
cg.start_cgrules(config)
def test(config):
result = consts.TEST_PASSED
cause = None
pid = config.process.create_process(config)
proc_cgroup = Process.get_cgroup(config, pid, CONTROLLER)
# proc/{pid}/cgroup alsways prepends a '/' to the cgroup path
if proc_cgroup != os.path.join('/', PARENT_CGNAME, CHILD_CGNAME):
result = consts.TEST_FAILED
cause = (
'PID {} was expected to be in cgroup {} but is in '
'cgroup {}'
''.format(pid,
os.path.join('/', PARENT_CGNAME, CHILD_CGNAME),
proc_cgroup)
)
return result, cause
def teardown(config):
# destroy the child processes
config.process.join_children(config)
cg.join_children(config)
Cgroup.delete(config, CONTROLLER, PARENT_CGNAME, recursive=True)
def main(config):
[result, cause] = prereqs(config)
if result != consts.TEST_PASSED:
return [result, cause]
try:
setup(config)
[result, cause] = test(config)
finally:
teardown(config)
return [result, cause]
if __name__ == '__main__':
config = ftests.parse_args()
# this test was invoked directly. run only it
config.args.num = int(os.path.basename(__file__).split('-')[0])
sys.exit(ftests.main(config))
# vim: set et ts=4 sw=4:
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