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| | #! /usr/bin/python3
# SPDX-License-Identifier: GPL-2.0-or-later
#
# avocado/common.py - Avocado test helper routines
#
# Copyright Red Hat
# Author: David Gibson <david@gibson.dropbear.id.au>
import json
import os.path
import sys
import avocado
from avocado.utils.process import system_output, SubProcess, CmdError
NSTOOL = './test/nstool'
class BaseTest(avocado.Test):
# Fairly short timeout by default
timeout = 5.0
def hostx(self, cmd, **kwargs):
return system_output(cmd, **kwargs)
class NsTool:
def __init__(self, sockpath):
self.sockpath = sockpath
pid = system_output(
'{} info -wp {}'.format(NSTOOL, sockpath), timeout=1)
self.pid = int(pid)
print('NsTool object: sockpath={} PID={}'.format(sockpath, self.pid),
file=sys.stderr)
def pid(self):
return self.pid
def _xcmd(self, cmd, sudo=False):
if sudo:
opts = '--keep-caps'
else:
opts = ''
return '{} exec {} {} -- {}'.format(NSTOOL, opts, self.sockpath, cmd)
def subprocess(self, cmd, sudo=False, **kwargs):
return SubProcess(self._xcmd(cmd, sudo), **kwargs)
def system_output(self, cmd, sudo=False, **kwargs):
return system_output(self._xcmd(cmd, sudo), **kwargs)
class NsToolUnshare(NsTool):
def __init__(self, workdir, sockname, unshare_opts, parent=None):
sockpath = os.path.join(workdir, sockname)
holdcmd = 'unshare {} -- {} hold {}'.format(
unshare_opts, NSTOOL, sockpath)
if parent is None:
self.holder = SubProcess(holdcmd)
else:
self.holder = parent.subprocess(holdcmd, sudo=True)
self.holder.start()
super().__init__(sockpath)
def __del__(self):
cmd = '{} stop {}'.format(NSTOOL, self.sockpath)
system_output(cmd)
self.holder.stop()
#
# Tests for the test infrastructure itself
#
class HostExecTests(BaseTest):
def test_true(self):
self.hostx('true')
def test_false(self):
self.assertRaises(CmdError, self.hostx, 'false')
class UserNsTests(BaseTest):
def setUp(self):
super().setUp()
self.ns = NsToolUnshare(self.workdir, 'userns', '-Uc')
def tearDown(self):
del(self.ns)
super().tearDown()
def test(self):
capcmd = 'capsh --has-p=CAP_SETUID'
self.assertRaises(CmdError, self.hostx, capcmd)
self.ns.system_output(capcmd, sudo=True)
class NestedNsTests(BaseTest):
def setUp(self):
super().setUp()
self.userns = NsToolUnshare(self.workdir, 'userns', '-Uc')
self.netns = NsToolUnshare(
self.workdir, 'netns', '-n', parent=self.userns)
def tearDown(self):
del(self.netns)
del(self.userns)
super().tearDown()
def test_unnested(self):
# Shouldn't have permission to create a netns without nesting
# it in the userns
self.assertRaises(CmdError, NsToolUnshare,
self.workdir, 'netns2', '-n')
def test_nested(self):
self.netns.system_output('true')
output = self.netns.system_output('ip -j link show')
ifs = json.loads(output)
self.assertEquals(len(ifs), 1)
self.assertEquals(ifs[0]['ifname'], 'lo')
class NsConnectTests(BaseTest):
def setUp(self):
super().setUp()
self.sockpath = os.path.join(self.workdir, 'hostns')
holdcmd = '{} hold {}'.format(NSTOOL, self.sockpath)
self.holder = SubProcess(holdcmd)
self.holder.start()
def tearDown(self):
self.holder.stop()
super().tearDown()
def test_connect(self):
hostns = NsTool(self.sockpath)
hostns.system_output('true')
|