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
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
|
#!/usr/bin/python3
# SPDX-License-Identifier: GPL-2.0
import unittest
import os
import time
import glob
import fcntl
try:
import ioctl_opt as ioctl
except ImportError:
ioctl = None
pass
from dbc import *
# Artificial delay between set commands
SET_DELAY = 0.5
class invalid_param(ctypes.Structure):
_fields_ = [
("data", ctypes.c_uint8),
]
def system_is_secured() -> bool:
fused_part = glob.glob("/sys/bus/pci/drivers/ccp/**/fused_part")[0]
if os.path.exists(fused_part):
with open(fused_part, "r") as r:
return int(r.read()) == 1
return True
class DynamicBoostControlTest(unittest.TestCase):
def __init__(self, data) -> None:
self.d = None
self.signature = b"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
self.uid = b"1111111111111111"
super().__init__(data)
def setUp(self) -> None:
self.d = open(DEVICE_NODE)
return super().setUp()
def tearDown(self) -> None:
if self.d:
self.d.close()
return super().tearDown()
class TestUnsupportedSystem(DynamicBoostControlTest):
def setUp(self) -> None:
if os.path.exists(DEVICE_NODE):
self.skipTest("system is supported")
with self.assertRaises(FileNotFoundError) as error:
super().setUp()
self.assertEqual(error.exception.errno, 2)
def test_unauthenticated_nonce(self) -> None:
"""fetch unauthenticated nonce"""
with self.assertRaises(ValueError) as error:
get_nonce(self.d, None)
class TestInvalidIoctls(DynamicBoostControlTest):
def __init__(self, data) -> None:
self.data = invalid_param()
self.data.data = 1
super().__init__(data)
def setUp(self) -> None:
if not os.path.exists(DEVICE_NODE):
self.skipTest("system is unsupported")
if not ioctl:
self.skipTest("unable to test IOCTLs without ioctl_opt")
return super().setUp()
def test_invalid_nonce_ioctl(self) -> None:
"""tries to call get_nonce ioctl with invalid data structures"""
# 0x1 (get nonce), and invalid data
INVALID1 = ioctl.IOWR(ord("D"), 0x01, invalid_param)
with self.assertRaises(OSError) as error:
fcntl.ioctl(self.d, INVALID1, self.data, True)
self.assertEqual(error.exception.errno, 22)
def test_invalid_setuid_ioctl(self) -> None:
"""tries to call set_uid ioctl with invalid data structures"""
# 0x2 (set uid), and invalid data
INVALID2 = ioctl.IOW(ord("D"), 0x02, invalid_param)
with self.assertRaises(OSError) as error:
fcntl.ioctl(self.d, INVALID2, self.data, True)
self.assertEqual(error.exception.errno, 22)
def test_invalid_setuid_rw_ioctl(self) -> None:
"""tries to call set_uid ioctl with invalid data structures"""
# 0x2 as RW (set uid), and invalid data
INVALID3 = ioctl.IOWR(ord("D"), 0x02, invalid_param)
with self.assertRaises(OSError) as error:
fcntl.ioctl(self.d, INVALID3, self.data, True)
self.assertEqual(error.exception.errno, 22)
def test_invalid_param_ioctl(self) -> None:
"""tries to call param ioctl with invalid data structures"""
# 0x3 (param), and invalid data
INVALID4 = ioctl.IOWR(ord("D"), 0x03, invalid_param)
with self.assertRaises(OSError) as error:
fcntl.ioctl(self.d, INVALID4, self.data, True)
self.assertEqual(error.exception.errno, 22)
def test_invalid_call_ioctl(self) -> None:
"""tries to call the DBC ioctl with invalid data structures"""
# 0x4, and invalid data
INVALID5 = ioctl.IOWR(ord("D"), 0x04, invalid_param)
with self.assertRaises(OSError) as error:
fcntl.ioctl(self.d, INVALID5, self.data, True)
self.assertEqual(error.exception.errno, 22)
class TestInvalidSignature(DynamicBoostControlTest):
def setUp(self) -> None:
if not os.path.exists(DEVICE_NODE):
self.skipTest("system is unsupported")
if not system_is_secured():
self.skipTest("system is unfused")
return super().setUp()
def test_unauthenticated_nonce(self) -> None:
"""fetch unauthenticated nonce"""
get_nonce(self.d, None)
def test_multiple_unauthenticated_nonce(self) -> None:
"""ensure state machine always returns nonce"""
for count in range(0, 2):
get_nonce(self.d, None)
def test_authenticated_nonce(self) -> None:
"""fetch authenticated nonce"""
with self.assertRaises(OSError) as error:
get_nonce(self.d, self.signature)
self.assertEqual(error.exception.errno, 1)
def test_set_uid(self) -> None:
"""set uid"""
with self.assertRaises(OSError) as error:
set_uid(self.d, self.uid, self.signature)
self.assertEqual(error.exception.errno, 1)
def test_get_param(self) -> None:
"""fetch a parameter"""
with self.assertRaises(OSError) as error:
process_param(self.d, PARAM_GET_SOC_PWR_CUR, self.signature)
self.assertEqual(error.exception.errno, 1)
def test_set_param(self) -> None:
"""set a parameter"""
with self.assertRaises(OSError) as error:
process_param(self.d, PARAM_SET_PWR_CAP, self.signature, 1000)
self.assertEqual(error.exception.errno, 1)
class TestUnFusedSystem(DynamicBoostControlTest):
def setup_identity(self) -> None:
"""sets up the identity of the caller"""
# if already authenticated these may fail
try:
get_nonce(self.d, None)
except PermissionError:
pass
try:
set_uid(self.d, self.uid, self.signature)
except BlockingIOError:
pass
try:
get_nonce(self.d, self.signature)
except PermissionError:
pass
def setUp(self) -> None:
if not os.path.exists(DEVICE_NODE):
self.skipTest("system is unsupported")
if system_is_secured():
self.skipTest("system is fused")
super().setUp()
self.setup_identity()
time.sleep(SET_DELAY)
def test_get_valid_param(self) -> None:
"""fetch all possible parameters"""
# SOC power
soc_power_max = process_param(self.d, PARAM_GET_SOC_PWR_MAX, self.signature)
soc_power_min = process_param(self.d, PARAM_GET_SOC_PWR_MIN, self.signature)
self.assertGreater(soc_power_max[0], soc_power_min[0])
# fmax
fmax_max = process_param(self.d, PARAM_GET_FMAX_MAX, self.signature)
fmax_min = process_param(self.d, PARAM_GET_FMAX_MIN, self.signature)
self.assertGreater(fmax_max[0], fmax_min[0])
# cap values
keys = {
"fmax-cap": PARAM_GET_FMAX_CAP,
"power-cap": PARAM_GET_PWR_CAP,
"current-temp": PARAM_GET_CURR_TEMP,
"soc-power-cur": PARAM_GET_SOC_PWR_CUR,
}
for k in keys:
result = process_param(self.d, keys[k], self.signature)
self.assertGreater(result[0], 0)
def test_get_invalid_param(self) -> None:
"""fetch an invalid parameter"""
try:
set_uid(self.d, self.uid, self.signature)
except OSError:
pass
with self.assertRaises(OSError) as error:
process_param(self.d, (0xF,), self.signature)
self.assertEqual(error.exception.errno, 22)
def test_set_fmax(self) -> None:
"""get/set fmax limit"""
# fetch current
original = process_param(self.d, PARAM_GET_FMAX_CAP, self.signature)
# set the fmax
target = original[0] - 100
process_param(self.d, PARAM_SET_FMAX_CAP, self.signature, target)
time.sleep(SET_DELAY)
new = process_param(self.d, PARAM_GET_FMAX_CAP, self.signature)
self.assertEqual(new[0], target)
# revert back to current
process_param(self.d, PARAM_SET_FMAX_CAP, self.signature, original[0])
time.sleep(SET_DELAY)
cur = process_param(self.d, PARAM_GET_FMAX_CAP, self.signature)
self.assertEqual(cur[0], original[0])
def test_set_power_cap(self) -> None:
"""get/set power cap limit"""
# fetch current
original = process_param(self.d, PARAM_GET_PWR_CAP, self.signature)
# set the fmax
target = original[0] - 10
process_param(self.d, PARAM_SET_PWR_CAP, self.signature, target)
time.sleep(SET_DELAY)
new = process_param(self.d, PARAM_GET_PWR_CAP, self.signature)
self.assertEqual(new[0], target)
# revert back to current
process_param(self.d, PARAM_SET_PWR_CAP, self.signature, original[0])
time.sleep(SET_DELAY)
cur = process_param(self.d, PARAM_GET_PWR_CAP, self.signature)
self.assertEqual(cur[0], original[0])
def test_set_3d_graphics_mode(self) -> None:
"""set/get 3d graphics mode"""
# these aren't currently implemented but may be some day
# they are *expected* to fail
with self.assertRaises(OSError) as error:
process_param(self.d, PARAM_GET_GFX_MODE, self.signature)
self.assertEqual(error.exception.errno, 2)
time.sleep(SET_DELAY)
with self.assertRaises(OSError) as error:
process_param(self.d, PARAM_SET_GFX_MODE, self.signature, 1)
self.assertEqual(error.exception.errno, 2)
if __name__ == "__main__":
unittest.main()
|
