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#!/usr/bin/env python3
# SPDX-License-Identifier: LGPL-2.1-only
#
# Cgroup recursive cgdelete functionality test
#
# Copyright (c) 2020-2021 Oracle and/or its affiliates.
# Author: Tom Hromatka <tom.hromatka@oracle.com>
#
from cgroup import Cgroup, CgroupVersion
from libcgroup import Mode
import consts
import ftests
import sys
import os
CONTROLLER = 'cpuset'
PARENT = '002cgdelete'
CHILD = 'childcg'
GRANDCHILD = 'grandchildcg'
def prereqs(config):
result = consts.TEST_PASSED
cause = None
# This test has shown inconsistent failures on underpowered legacy
# machines when run within a container. Skip that configuration
if Cgroup.get_cgroup_mode(config) == Mode.CGROUP_MODE_LEGACY and \
config.args.container:
result = consts.TEST_SKIPPED
cause = 'Skip this test in containerized legacy hierarchies'
return result, cause
def setup(config):
Cgroup.create(config, CONTROLLER, PARENT)
Cgroup.create(config, CONTROLLER, os.path.join(PARENT, CHILD))
Cgroup.create(config, CONTROLLER, os.path.join(PARENT, CHILD, GRANDCHILD))
version = CgroupVersion.get_version(CONTROLLER)
if version == CgroupVersion.CGROUP_V1:
# cgdelete in a cgroup v1 controller should be able to move a process
# from a child cgroup to its parent.
#
# Moving a process from a child cgroup to its parent isn't (easily)
# supported in cgroup v2 because of cgroup v2's restriction that
# processes only be located in leaf cgroups
grandchild_cgrp_path = os.path.join(PARENT, CHILD, GRANDCHILD)
config.process.create_process_in_cgroup(config, CONTROLLER,
grandchild_cgrp_path)
def test(config):
Cgroup.delete(config, CONTROLLER, PARENT, recursive=True)
return consts.TEST_PASSED, None
def teardown(config):
pass
def main(config):
[result, cause] = prereqs(config)
if result != consts.TEST_PASSED:
return [result, cause]
setup(config)
[result, cause] = test(config)
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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