1 /*
2  * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without modification,
5  * are permitted provided that the following conditions are met:
6  *
7  * 1. Redistributions of source code must retain the above copyright notice, this list of
8  * conditions and the following disclaimer.
9  *
10  * 2. Redistributions in binary form must reproduce the above copyright notice, this list
11  * of conditions and the following disclaimer in the documentation and/or other materials
12  * provided with the distribution.
13  *
14  * 3. Neither the name of the copyright holder nor the names of its contributors may be used
15  * to endorse or promote products derived from this software without specific prior written
16  * permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
22  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
25  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
27  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
28  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 #include "It_container_test.h"
31 using namespace std;
32 
33 static const char *containerType = "ipc";
34 
35 struct shared_use_st {
36     char test[SHM_TEST_DATA_SIZE];
37 };
38 
childFunc1(void *arg)39 static int childFunc1(void *arg)
40 {
41     struct shared_use_st *shared = NULL;
42     const char testBuf[] = "child test shm";
43     int ret;
44     (void)arg;
45 
46     int shmid = shmget((key_t)SHM_TEST_KEY1, sizeof(struct shared_use_st), SHM_TEST_OPEN_PERM | IPC_CREAT);
47     if (shmid == -1) {
48         return EXIT_CODE_ERRNO_1;
49     }
50 
51     void *shm = shmat(shmid, 0, 0);
52     if (shm == reinterpret_cast<void *>(-1)) {
53         shmctl(shmid, IPC_RMID, 0);
54         return EXIT_CODE_ERRNO_2;
55     }
56     shared = (struct shared_use_st *)shm;
57     ret = strncmp(shared->test, testBuf, strlen(testBuf));
58     if (ret != 0) {
59         shmdt(shm);
60         shmctl(shmid, IPC_RMID, 0);
61         return EXIT_CODE_ERRNO_3;
62     }
63     ret = shmdt(shm);
64     if (ret ==  -1) {
65         shmctl(shmid, IPC_RMID, 0);
66         return EXIT_CODE_ERRNO_4;
67     }
68     return 0;
69 }
70 
childFunc(void *arg)71 static int childFunc(void *arg)
72 {
73     const char testBuf[] = "parent test shm";
74     const char testBuf1[] = "child test shm";
75     int ret, status, pid, exitCode;
76     (void)arg;
77     char *stack = (char *)mmap(NULL, STACK_SIZE, PROT_READ | PROT_WRITE, CLONE_STACK_MMAP_FLAG, -1, 0);
78     if (stack == nullptr) {
79         return EXIT_CODE_ERRNO_17;
80     }
81     char *stackTop = stack + STACK_SIZE;
82     auto linkBuffer = ReadlinkContainer(getpid(), containerType);
83 
84     int shmid = shmget((key_t)SHM_TEST_KEY1, sizeof(struct shared_use_st), SHM_TEST_OPEN_PERM | IPC_CREAT);
85     if (shmid == -1) {
86         return EXIT_CODE_ERRNO_1;
87     }
88 
89     void *shm = shmat(shmid, 0, 0);
90     if (shm == reinterpret_cast<void *>(-1)) {
91         shmctl(shmid, IPC_RMID, 0);
92         return EXIT_CODE_ERRNO_2;
93     }
94 
95     struct shared_use_st *shared = (struct shared_use_st *)shm;
96     ret = strncmp(shared->test, testBuf, strlen(testBuf));
97     if (ret == 0) {
98         ret = EXIT_CODE_ERRNO_3;
99         goto EXIT;
100     }
101 
102     ret = memcpy_s(shared->test, sizeof(struct shared_use_st), testBuf1, sizeof(testBuf1));
103     if (ret != 0) {
104         ret = EXIT_CODE_ERRNO_4;
105         goto EXIT;
106     }
107 
108     pid = clone(childFunc1, stackTop, SIGCHLD, &arg);
109     if (pid == -1) {
110         ret = EXIT_CODE_ERRNO_5;
111         goto EXIT;
112     }
113 
114     ret = waitpid(pid, &status, 0);
115     if (ret != pid) {
116         ret = EXIT_CODE_ERRNO_6;
117         goto EXIT;
118     }
119 
120     ret = WIFEXITED(status);
121     if (ret == 0) {
122         ret = EXIT_CODE_ERRNO_7;
123         goto EXIT;
124     }
125 
126     exitCode = WEXITSTATUS(status);
127     if (exitCode != 0) {
128         ret = EXIT_CODE_ERRNO_8;
129         goto EXIT;
130     }
131 
132     ret = shmdt(shm);
133     if (ret == -1) {
134         shmctl(shmid, IPC_RMID, 0);
135         return EXIT_CODE_ERRNO_9;
136     }
137 
138     ret = shmctl(shmid, IPC_RMID, 0);
139     if (ret == -1) {
140         return EXIT_CODE_ERRNO_10;
141     }
142 
143     return 0;
144 EXIT:
145     shmdt(shm);
146     shmctl(shmid, IPC_RMID, 0);
147     return ret;
148 }
149 
ItIpcContainer004(void)150 void ItIpcContainer004(void)
151 {
152     const char testBuf[] = "parent test shm";
153     int pid, exitCode, status, ret;
154     void *shm = NULL;
155     struct shmid_ds ds = {};
156     struct shminfo info = {};
157 
158     int arg = CHILD_FUNC_ARG;
159     char *stack = (char *)mmap(NULL, STACK_SIZE, PROT_READ | PROT_WRITE, CLONE_STACK_MMAP_FLAG, -1, 0);
160     ASSERT_NE(stack, nullptr);
161     char *stackTop = stack + STACK_SIZE;
162 
163     int shmid = shmget((key_t)SHM_TEST_KEY1, sizeof(struct shared_use_st), SHM_TEST_OPEN_PERM | IPC_CREAT);
164     ShmFinalizer ShmFinalizer(shm, shmid);
165     ASSERT_NE(shmid, -1);
166 
167     shm = shmat(shmid, 0, 0);
168     ASSERT_NE((int)shm, -1);
169 
170     struct shared_use_st *shared = (struct shared_use_st *)shm;
171     ret = memcpy_s(shared->test, sizeof(struct shared_use_st), testBuf, sizeof(testBuf));
172     ASSERT_EQ(ret, 0);
173 
174     pid = clone(childFunc, stackTop, CLONE_NEWIPC | SIGCHLD, &arg);
175     ASSERT_NE(pid, -1);
176 
177     ret = waitpid(pid, &status, 0);
178     ASSERT_EQ(ret, pid);
179 
180     ret = WIFEXITED(status);
181     ASSERT_NE(ret, 0);
182 
183     exitCode = WEXITSTATUS(status);
184     ASSERT_EQ(exitCode, 0);
185 
186     ret = shmctl(shmid, IPC_STAT, &ds);
187     ASSERT_EQ(ret, 0);
188     ASSERT_EQ(ds.shm_segsz, PAGE_SIZE);
189     ASSERT_EQ(ds.shm_nattch, 1);
190     ASSERT_EQ(ds.shm_cpid, getpid());
191     ASSERT_EQ(ds.shm_lpid, getpid());
192     ASSERT_EQ(ds.shm_perm.uid, getuid());
193 
194     ret = shmctl(shmid, SHM_STAT, &ds);
195     ASSERT_NE(ret, -1);
196     ASSERT_NE(ret, 0);
197 
198     ds.shm_perm.uid = getuid();
199     ds.shm_perm.gid = getgid();
200     ds.shm_perm.mode = 0;
201     ret = shmctl(shmid, IPC_SET, &ds);
202     ASSERT_EQ(ret, 0);
203 
204     ret = shmctl(shmid, IPC_INFO, (struct shmid_ds *)&info);
205     ASSERT_EQ(ret, 192); /* 192: test value */
206     ASSERT_EQ(info.shmmax, 0x1000000); /* 0x1000000: Shared memory information  */
207     ASSERT_EQ(info.shmmin, 1); /* 1: Shared memory information */
208     ASSERT_EQ(info.shmmni, 192); /* 192: Shared memory information */
209     ASSERT_EQ(info.shmseg, 128); /* 128: Shared memory information */
210     ASSERT_EQ(info.shmall, 0x1000); /* 0x1000: Shared memory information */
211 
212     ret = shmdt(shm);
213     ASSERT_NE(ret, -1);
214 
215     ret = shmctl(shmid, IPC_RMID, NULL);
216     ASSERT_EQ(ret, 0);
217 }
218