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
33 #define MAP_LEN 0x200000
34 #define MAP_ADDR 0x1200000
35 #define MAP_OFFSET 0x100000
36
Testcase(void)37 static int Testcase(void)
38 {
39 size_t len = MAP_LEN;
40 unsigned long fixAddr = MAP_ADDR;
41 unsigned long before, after;
42 size_t shinkLen;
43 unsigned int flags = MAP_ANON | MAP_SHARED | MAP_FIXED;
44 void *mem = NULL;
45 void *prev = NULL;
46 void *next = NULL;
47 void *belong = NULL;
48 int ret;
49
50 mem = mmap((void *)fixAddr, len, PROT_READ | PROT_WRITE, flags, -1, 0);
51 ICUNIT_GOTO_NOT_EQUAL(mem, MAP_FAILED, mem, EXIT);
52
53 before = fixAddr - MAP_OFFSET;
54 prev = mmap((void *)before, len, PROT_READ | PROT_WRITE, flags, -1, 0);
55 ICUNIT_GOTO_NOT_EQUAL(prev, MAP_FAILED, prev, EXIT1);
56
57 after = fixAddr + MAP_OFFSET;
58 next = mmap((void *)after, len, PROT_READ | PROT_WRITE, flags, -1, 0);
59 ICUNIT_GOTO_NOT_EQUAL(next, MAP_FAILED, next, EXIT2);
60
61 shinkLen = len - MAP_OFFSET;
62 belong = mmap((void *)after, shinkLen, PROT_READ | PROT_WRITE, flags, -1, 0);
63 ICUNIT_GOTO_NOT_EQUAL(belong, MAP_FAILED, belong, EXIT3);
64
65 ret = munmap(prev, len);
66 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
67 ret = munmap(next, len);
68 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
69 return LOS_OK;
70
71 EXIT1:
72 ret = munmap(mem, len);
73 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
74 return LOS_NOK;
75 EXIT2:
76 ret = munmap(mem, len);
77 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
78 ret = munmap(prev, len);
79 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
80 return LOS_NOK;
81 EXIT3:
82 ret = munmap(prev, len);
83 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
84 ret = munmap(next, len);
85 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
86 EXIT:
87 return LOS_NOK;
88 }
89
ItTestMmap007(void)90 void ItTestMmap007(void)
91 {
92 TEST_ADD_CASE("IT_MEM_MMAP_007", Testcase, TEST_LOS, TEST_MEM, TEST_LEVEL0, TEST_FUNCTION);
93 }
94