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1#
2# Copyright (C) 2017 The Android Open Source Project
3#
4# Licensed under the Apache License, Version 2.0 (the "License");
5# you may not use this file except in compliance with the License.
6# You may obtain a copy of the License at
7#
8#      http://www.apache.org/licenses/LICENSE-2.0
9#
10# Unless required by applicable law or agreed to in writing, software
11# distributed under the License is distributed on an "AS IS" BASIS,
12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13# See the License for the specific language governing permissions and
14# limitations under the License.
15#
16
17from vts.testcases.kernel.api.proc import KernelProcFileTestBase
18
19from vts.utils.python.file import file_utils
20
21
22class ProcKptrRestrictTest(KernelProcFileTestBase.KernelProcFileTestBase):
23    '''/proc/sys/kernel/kptr_restrict determines whether kernel pointers are printed
24    in proc files.
25    '''
26
27    def parse_contents(self, contents):
28        return self.parse_line("{:d}\n", contents)[0]
29
30    def result_correct(self, result):
31        return result >= 0 and result <= 4
32
33    def get_path(self):
34        return "/proc/sys/kernel/kptr_restrict"
35
36    def get_permission_checker(self):
37        """Get r/w file permission checker.
38        """
39        return file_utils.IsReadWrite
40
41
42class ProcRandomizeVaSpaceTest(KernelProcFileTestBase.KernelProcFileTestBase):
43    '''/proc/sys/kernel/randomize_va_space determines the address layout randomization
44    policy for the system.
45    '''
46
47    def parse_contents(self, contents):
48        return self.parse_line("{:d}\n", contents)[0]
49
50    def result_correct(self, result):
51        return result >= 0 and result <= 2
52
53    def get_path(self):
54        return "/proc/sys/kernel/randomize_va_space"
55
56    def get_permission_checker(self):
57        """Get r/w file permission checker.
58        """
59        return file_utils.IsReadWrite
60
61
62class ProcOverCommitMemoryTest(KernelProcFileTestBase.KernelProcFileTestBase):
63    '''/proc/sys/vm/overcommit_memory determines the kernel virtual memory accounting mode.
64    '''
65
66    def parse_contents(self, contents):
67        return self.parse_line("{:d}\n", contents)[0]
68
69    def result_correct(self, result):
70        return result >= 0 and result <= 2
71
72    def get_path(self):
73        return "/proc/sys/vm/overcommit_memory"
74
75    def get_permission_checker(self):
76        """Get r/w file permission checker.
77        """
78        return file_utils.IsReadWrite
79
80
81class ProcMmapMinAddrTest(KernelProcFileTestBase.KernelProcFileTestBase):
82    '''/proc/sys/vm/mmap_min_addr specifies the minimum address that can be mmap'd.
83    '''
84
85    def parse_contents(self, contents):
86        return self.parse_line("{:d}\n", contents)[0]
87
88    def get_path(self):
89        return "/proc/sys/vm/mmap_min_addr"
90
91    def get_permission_checker(self):
92        """Get r/w file permission checker.
93        """
94        return file_utils.IsReadWrite
95
96
97class ProcMmapRndBitsTest(KernelProcFileTestBase.KernelProcFileTestBase):
98    '''/proc/sys/vm/mmap_rnd_(compat_)bits specifies the amount of randomness in mmap'd
99    addresses. Must be >= 8.
100    '''
101
102    def parse_contents(self, contents):
103        return self.parse_line("{:d}\n", contents)[0]
104
105    def result_correct(self, result):
106        return result >= 8
107
108    def get_path(self):
109        return "/proc/sys/vm/mmap_rnd_bits"
110
111    def get_permission_checker(self):
112        """Get r/w file permission checker.
113        """
114        return file_utils.IsReadWrite
115
116
117class ProcMmapRndCompatBitsTest(ProcMmapRndBitsTest):
118    def get_path(self):
119        return "/proc/sys/vm/mmap_rnd_compat_bits"
120