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_RESERVED0080 0x0080
34
CheckedMmap(int prot,int flags,int fd)35 static int CheckedMmap(int prot, int flags, int fd)
36 {
37 void *p = NULL;
38 int pageSize = getpagesize();
39 int ret;
40
41 if (pageSize < 0) {
42 printf("err: mmap size invaild\n");
43 return -1;
44 }
45 p = mmap(NULL, pageSize, prot, flags, fd, 0);
46 if (p == MAP_FAILED) {
47 return errno;
48 } else {
49 ret = munmap(p, pageSize);
50 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
51 return 0;
52 }
53 }
54
Testcase(void)55 static int Testcase(void)
56 {
57 int shmfd;
58 int ret;
59 int count;
60 int pageSize = getpagesize();
61 char *buf = NULL;
62
63 shmfd = shm_open("/test", O_RDWR | O_CREAT, 0644);
64 ICUNIT_ASSERT_NOT_EQUAL(shmfd, -1, shmfd);
65
66 if (pageSize <= 0) {
67 printf("err: malloc size invaild\n");
68 return -1;
69 }
70 if (pageSize <= 0) {
71 printf("err: malloc size invaild\n");
72 return -1;
73 }
74 buf = (char *)malloc(pageSize);
75 ICUNIT_ASSERT_NOT_EQUAL(buf, NULL, buf);
76 (void)memset_s(buf, pageSize, 0xf, pageSize);
77
78 count = write(shmfd, buf, pageSize);
79 ICUNIT_ASSERT_EQUAL(count, pageSize, count);
80
81 free(buf);
82
83 /* Simple MAP_ANONYMOUS */
84 ret = CheckedMmap(PROT_READ | PROT_WRITE, MAP_ANONYMOUS, -1);
85 ICUNIT_ASSERT_EQUAL(ret, EINVAL, ret);
86
87 /* Simple shm fd shared */
88 ret = CheckedMmap(PROT_READ | PROT_WRITE, MAP_SHARED, shmfd);
89 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
90
91 /* Simple shm fd private */
92 ret = CheckedMmap(PROT_READ | PROT_WRITE, MAP_PRIVATE, shmfd);
93 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
94
95 /* MAP_ANONYMOUS with extra PROT flags */
96 ret = CheckedMmap(PROT_READ | PROT_WRITE | 0x100000, MAP_ANONYMOUS, -1);
97 ICUNIT_ASSERT_EQUAL(ret, EINVAL, ret);
98
99 /* Shm fd with garbage PROT */
100 ret = CheckedMmap(0xffff, MAP_SHARED, shmfd);
101 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
102
103 /* Undefined flag. */
104 ret = CheckedMmap(PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_RESERVED0080, -1);
105 ICUNIT_ASSERT_EQUAL(ret, EINVAL, ret);
106
107 /* Both MAP_SHARED and MAP_PRIVATE */
108 ret = CheckedMmap(PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE | MAP_SHARED, -1);
109 ICUNIT_ASSERT_EQUAL(ret, EINVAL, ret);
110
111 /* Shm fd with both SHARED and PRIVATE */
112 ret = CheckedMmap(PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_SHARED, shmfd);
113 ICUNIT_ASSERT_EQUAL(ret, EINVAL, ret);
114
115 /* At least one of MAP_SHARED or MAP_PRIVATE without ANON */
116 ret = CheckedMmap(PROT_READ | PROT_WRITE, 0, shmfd);
117 ICUNIT_ASSERT_EQUAL(ret, EINVAL, ret);
118
119 /* MAP_ANONYMOUS with either sharing flag (impacts fork). */
120 ret = CheckedMmap(PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_SHARED, -1);
121 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
122
123 ret = CheckedMmap(PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1);
124 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
125
126 /* MAP_ANONYMOUS should require an fd of -1. */
127 ret = CheckedMmap(PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0);
128 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
129
130 ret = close(shmfd);
131 ICUNIT_ASSERT_EQUAL(ret, 0, ret);
132 return 0;
133 }
134
ItTestMmap002(void)135 void ItTestMmap002(void)
136 {
137 TEST_ADD_CASE("IT_MEM_MMAP_002", Testcase, TEST_LOS, TEST_MEM, TEST_LEVEL0, TEST_FUNCTION);
138 }
139