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1 /*
2  * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3  * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without modification,
6  * are permitted provided that the following conditions are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice, this list of
9  * conditions and the following disclaimer.
10  *
11  * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12  * of conditions and the following disclaimer in the documentation and/or other materials
13  * provided with the distribution.
14  *
15  * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16  * to endorse or promote products derived from this software without specific prior written
17  * permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30  */
31 #include "it_test_vm.h"
32 
Testcase(void)33 static int Testcase(void)
34 {
35     char *p = NULL;
36     int pageSize;
37     int ret;
38 
39     pageSize = getpagesize();
40 
41     ret = mprotect(0, pageSize, PROT_NONE);
42     ICUNIT_ASSERT_EQUAL(ret, -1, ret);
43     ICUNIT_ASSERT_EQUAL(errno, EINVAL, errno);
44 
45     ret = mprotect(0, pageSize, 0xffff);
46     ICUNIT_ASSERT_EQUAL(ret, -1, ret);
47     ICUNIT_ASSERT_EQUAL(errno, EINVAL, errno);
48 
49     ret = mprotect((void *)0x1000, pageSize, PROT_READ | PROT_WRITE);
50     ICUNIT_ASSERT_EQUAL(ret, -1, ret);
51     ICUNIT_ASSERT_EQUAL(errno, EINVAL, errno);
52 
53     ret = mprotect((void *)0xffffff, pageSize, PROT_READ | PROT_WRITE);
54     ICUNIT_ASSERT_EQUAL(ret, -1, ret);
55     ICUNIT_ASSERT_EQUAL(errno, EINVAL, errno);
56 
57     p = (char *)mmap(NULL, pageSize * 3, PROT_READ, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
58     ICUNIT_ASSERT_NOT_EQUAL(p, MAP_FAILED, p);
59 
60     ret = mprotect(p, pageSize * 4, PROT_READ | PROT_WRITE);
61     ICUNIT_ASSERT_EQUAL(ret, -1, ret);
62     ICUNIT_ASSERT_EQUAL(errno, EINVAL, errno);
63 
64     ret = mprotect(p, pageSize, PROT_READ | PROT_WRITE);
65     ICUNIT_ASSERT_EQUAL(ret, 0, ret);
66     (void)memset_s(p, pageSize, 0xf, pageSize);
67 
68     ret = mprotect(p + pageSize * 2, pageSize, PROT_READ | PROT_WRITE);
69     ICUNIT_ASSERT_EQUAL(ret, 0, ret);
70     (void)memset_s(p + pageSize * 2, pageSize, 0xf, pageSize);
71 
72     ret = munmap(p, pageSize);
73     ICUNIT_ASSERT_EQUAL(ret, 0, ret);
74 
75     return 0;
76 }
77 
ItTestMprotect001(void)78 void ItTestMprotect001(void)
79 {
80     TEST_ADD_CASE("IT_MEM_MPROTECT_001", Testcase, TEST_LOS, TEST_MEM, TEST_LEVEL0, TEST_FUNCTION);
81 }
82