1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
| | #! /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 ipaddress
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 relative_pid(self, relative_to):
cmd = '{} info -p {}'.format(NSTOOL, self.sockpath)
txt = relative_to.system_output(cmd)
return int(txt)
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()
def ll_addr(x, ifname):
ifinfo = json.loads(x('ip -6 -j addr show {}'.format(ifname)))
for adinfo in ifinfo[0]['addr_info']:
if adinfo['scope'] != 'link':
continue
if adinfo.get('tentative') is True:
continue
return ipaddress.ip_address(adinfo['local'])
return None
def slaac_wait(x, ifname):
addr = None
while addr is None:
addr = ll_addr(x, ifname)
return addr
#
# 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')
class SlaacWaitTests(BaseTest):
def setUp(self):
super().setUp()
self.ns1 = NsToolUnshare(self.workdir, 'ns1', '-Ucn')
self.ns2 = NsToolUnshare(self.workdir, 'ns2', '-n', parent=self.ns1)
def tearDown(self):
del(self.ns2)
del(self.ns1)
super().tearDown()
def test_slaac_wait(self, sysctls={}):
TESTMAC = '02:aa:bb:cc:dd:ee'
TESTIP = ipaddress.ip_address('fe80::aa:bbff:fecc:ddee')
self.ns1.system_output('ip link add type veth', sudo=True)
relpid = self.ns2.relative_pid(self.ns1)
self.ns1.system_output(
'ip link set veth1 netns {}'.format(relpid), sudo=True)
self.ns1.system_output(
'ip link set dev veth0 address {}'.format(TESTMAC), sudo=True)
for (key, val) in sysctls.items():
self.ns1.system_output(
'sysctl net.ipv6.conf.veth0.{}={}'.format(key, val), sudo=True)
self.ns2.system_output(
'sysctl net.ipv6.conf.veth1.{}={}'.format(key, val), sudo=True)
self.ns2.system_output('ip link set veth1 up', sudo=True)
self.ns1.system_output('ip link set veth0 up', sudo=True)
addr = slaac_wait(self.ns1.system_output, 'veth0')
self.assertEqual(addr, TESTIP)
def test_optimistic_dad(self):
self.test_slaac_wait({'optimistic_dad': 1})
def test_no_dad(self):
self.test_slaac_wait({'accept_dad': 0})
|