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
|
from optparse import OptionParser
from optparse import Option, OptionValueError
import os
import policy
import re
import sys
#############################################################
# Tests
#############################################################
def TestDataTypeViolations(pol):
return pol.AssertPathTypesHaveAttr(["/data/"], [], "data_file_type")
def TestSystemTypeViolations(pol):
partitions = ["/system/", "/system_ext/", "/product/"]
exceptions = [
# devices before treble don't have a vendor partition
"/system/vendor/",
# overlay files are mounted over vendor
"/product/overlay/",
"/product/vendor_overlay/",
"/system/overlay/",
"/system/product/overlay/",
"/system/product/vendor_overlay/",
"/system/system_ext/overlay/",
"/system_ext/overlay/",
]
return pol.AssertPathTypesHaveAttr(partitions, exceptions, "system_file_type")
def TestProcTypeViolations(pol):
return pol.AssertGenfsFilesystemTypesHaveAttr("proc", "proc_type")
def TestSysfsTypeViolations(pol):
ret = pol.AssertGenfsFilesystemTypesHaveAttr("sysfs", "sysfs_type")
ret += pol.AssertPathTypesHaveAttr(["/sys/"], ["/sys/kernel/debug/",
"/sys/kernel/tracing"], "sysfs_type")
return ret
def TestDebugfsTypeViolations(pol):
ret = pol.AssertGenfsFilesystemTypesHaveAttr("debugfs", "debugfs_type")
ret += pol.AssertGenfsFilesystemTypesHaveAttr("tracefs", "debugfs_type")
ret += pol.AssertPathTypesHaveAttr(["/sys/kernel/debug/",
"/sys/kernel/tracing"], [], "debugfs_type")
return ret
def TestVendorTypeViolations(pol):
partitions = ["/vendor/", "/odm/"]
exceptions = [
"/vendor/etc/selinux/",
"/vendor/odm/etc/selinux/",
"/odm/etc/selinux/",
]
return pol.AssertPathTypesHaveAttr(partitions, exceptions, "vendor_file_type")
def TestCoreDataTypeViolations(pol):
return pol.AssertPathTypesHaveAttr(["/data/"], ["/data/vendor",
"/data/vendor_ce", "/data/vendor_de"], "core_data_file_type")
def TestPropertyTypeViolations(pol):
return pol.AssertPropertyOwnersAreExclusive()
def TestAppDataTypeViolations(pol):
# Types with the app_data_file_type should only be used for app data files
# (/data/data/package.name etc) via seapp_contexts, and never applied
# explicitly to other files.
partitions = [
"/data/",
"/vendor/",
"/odm/",
"/product/",
]
exceptions = [
# These are used for app data files for the corresponding user and
# assorted other files.
# TODO(b/172812577): Use different types for the different purposes
"shell_data_file",
"bluetooth_data_file",
"nfc_data_file",
"radio_data_file",
]
return pol.AssertPathTypesDoNotHaveAttr(partitions, [], "app_data_file_type",
exceptions)
def TestDmaHeapDevTypeViolations(pol):
return pol.AssertPathTypesHaveAttr(["/dev/dma_heap/"], [],
"dmabuf_heap_device_type")
###
# extend OptionParser to allow the same option flag to be used multiple times.
# This is used to allow multiple file_contexts files and tests to be
# specified.
#
class MultipleOption(Option):
ACTIONS = Option.ACTIONS + ("extend",)
STORE_ACTIONS = Option.STORE_ACTIONS + ("extend",)
TYPED_ACTIONS = Option.TYPED_ACTIONS + ("extend",)
ALWAYS_TYPED_ACTIONS = Option.ALWAYS_TYPED_ACTIONS + ("extend",)
def take_action(self, action, dest, opt, value, values, parser):
if action == "extend":
values.ensure_value(dest, []).append(value)
else:
Option.take_action(self, action, dest, opt, value, values, parser)
Tests = [
"TestDataTypeViolators",
"TestProcTypeViolations",
"TestSysfsTypeViolations",
"TestSystemTypeViolators",
"TestDebugfsTypeViolations",
"TestVendorTypeViolations",
"TestCoreDataTypeViolations",
"TestPropertyTypeViolations",
"TestAppDataTypeViolations",
"TestDmaHeapDevTypeViolations",
]
if __name__ == '__main__':
usage = "sepolicy_tests -l $(ANDROID_HOST_OUT)/lib64/libsepolwrap.so "
usage += "-f vendor_file_contexts -f "
usage +="plat_file_contexts -p policy [--test test] [--help]"
parser = OptionParser(option_class=MultipleOption, usage=usage)
parser.add_option("-f", "--file_contexts", dest="file_contexts",
metavar="FILE", action="extend", type="string")
parser.add_option("-p", "--policy", dest="policy", metavar="FILE")
parser.add_option("-l", "--library-path", dest="libpath", metavar="FILE")
parser.add_option("-t", "--test", dest="test", action="extend",
help="Test options include "+str(Tests))
(options, args) = parser.parse_args()
if not options.libpath:
sys.exit("Must specify path to libsepolwrap library\n" + parser.usage)
if not os.path.exists(options.libpath):
sys.exit("Error: library-path " + options.libpath + " does not exist\n"
+ parser.usage)
if not options.policy:
sys.exit("Must specify monolithic policy file\n" + parser.usage)
if not os.path.exists(options.policy):
sys.exit("Error: policy file " + options.policy + " does not exist\n"
+ parser.usage)
if not options.file_contexts:
sys.exit("Error: Must specify file_contexts file(s)\n" + parser.usage)
for f in options.file_contexts:
if not os.path.exists(f):
sys.exit("Error: File_contexts file " + f + " does not exist\n" +
parser.usage)
pol = policy.Policy(options.policy, options.file_contexts, options.libpath)
results = ""
# If an individual test is not specified, run all tests.
if options.test is None or "TestDataTypeViolations" in options.test:
results += TestDataTypeViolations(pol)
if options.test is None or "TestProcTypeViolations" in options.test:
results += TestProcTypeViolations(pol)
if options.test is None or "TestSysfsTypeViolations" in options.test:
results += TestSysfsTypeViolations(pol)
if options.test is None or "TestSystemTypeViolations" in options.test:
results += TestSystemTypeViolations(pol)
if options.test is None or "TestDebugfsTypeViolations" in options.test:
results += TestDebugfsTypeViolations(pol)
if options.test is None or "TestVendorTypeViolations" in options.test:
results += TestVendorTypeViolations(pol)
if options.test is None or "TestCoreDataTypeViolations" in options.test:
results += TestCoreDataTypeViolations(pol)
if options.test is None or "TestPropertyTypeViolations" in options.test:
results += TestPropertyTypeViolations(pol)
if options.test is None or "TestAppDataTypeViolations" in options.test:
results += TestAppDataTypeViolations(pol)
if options.test is None or "TestDmaHeapDevTypeViolations" in options.test:
results += TestDmaHeapDevTypeViolations(pol)
if len(results) > 0:
sys.exit(results)
|
