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
32 const int STR_LEN = 50;
33 const int SEC = 600;
34 const int NSEC = 800000000;
35
childFunc(void * arg)36 static int childFunc(void *arg)
37 {
38 char path[STR_LEN];
39 char timeOff[STR_LEN];
40 char readBuf[STR_LEN];
41 int ret;
42
43 ret = sprintf_s(timeOff, STR_LEN, "monotonic %d %d", SEC, NSEC);
44 if (ret <= 0) {
45 return EXIT_CODE_ERRNO_4;
46 }
47 ret = sprintf_s(path, STR_LEN, "/proc/%d/time_offsets", getpid());
48 if (ret <= 0) {
49 return EXIT_CODE_ERRNO_5;
50 }
51
52 int fd = open(path, O_RDWR);
53 if (fd == -1) {
54 return EXIT_CODE_ERRNO_1;
55 }
56
57 ret = read(fd, readBuf, STR_LEN);
58 if (ret == -1) {
59 close(fd);
60 return EXIT_CODE_ERRNO_2;
61 }
62 close(fd);
63 ret = strncmp(timeOff, readBuf, strlen(timeOff));
64 if (ret != 0) {
65 return EXIT_CODE_ERRNO_3;
66 }
67
68 return 0;
69 }
70
WriteProcTime(int pid)71 static int WriteProcTime(int pid)
72 {
73 int ret = 0;
74 char path[STR_LEN];
75 char timeOff[STR_LEN];
76
77 ret = sprintf_s(timeOff, STR_LEN, "monotonic %d %d", SEC, NSEC);
78 if (ret <= 0) {
79 return EXIT_CODE_ERRNO_6;
80 }
81 ret = sprintf_s(path, STR_LEN, "/proc/%d/time_offsets", pid);
82 if (ret <= 0) {
83 return EXIT_CODE_ERRNO_7;
84 }
85
86 int strLen = strlen(timeOff);
87 int fd = open(path, O_WRONLY);
88 if (ret == -1) {
89 return EXIT_CODE_ERRNO_8;
90 }
91
92 ret = write(fd, timeOff, strLen);
93 if (ret != strLen) {
94 close(fd);
95 return EXIT_CODE_ERRNO_9;
96 }
97
98 close(fd);
99 return 0;
100 }
101
TimeContainerUnshare(void)102 static void TimeContainerUnshare(void)
103 {
104 int ret;
105 int status;
106 char *containerType = "time";
107 char *containerType1 = "time_for_children";
108
109 char *stack = (char *)mmap(NULL, STACK_SIZE, PROT_READ | PROT_WRITE, CLONE_STACK_MMAP_FLAG, -1, 0);
110 ASSERT_NE(stack, nullptr);
111 char *stackTop = stack + STACK_SIZE;
112
113 ret = unshare(CLONE_NEWTIME);
114 ASSERT_EQ(ret, 0);
115
116 ret = unshare(CLONE_NEWTIME);
117 ASSERT_EQ(ret, -1);
118
119 ret = WriteProcTime(getpid());
120 ASSERT_EQ(ret, 0);
121
122 auto linkBuffer = ReadlinkContainer(getpid(), containerType);
123 auto linkBuffer1 = ReadlinkContainer(getpid(), containerType1);
124 ret = linkBuffer.compare(linkBuffer1);
125 ASSERT_TRUE(ret != 0);
126
127 int arg = CHILD_FUNC_ARG;
128 auto pid = clone(childFunc, stackTop, CLONE_NEWTIME | SIGCHLD, &arg);
129 ASSERT_TRUE(pid != -1);
130
131 auto linkBuffer2 = ReadlinkContainer(pid, containerType);
132 ret = linkBuffer1.compare(linkBuffer2);
133 ASSERT_EQ(ret, 0);
134
135 ret = unshare(CLONE_NEWTIME);
136 ASSERT_EQ(ret, -1);
137
138 ret = waitpid(pid, &status, 0);
139 ASSERT_EQ(ret, pid);
140
141 ret = WIFEXITED(status);
142 ASSERT_TRUE(ret != 0);
143
144 int exitCode = WEXITSTATUS(status);
145 ASSERT_EQ(exitCode, 0);
146
147 exit(0);
148 }
149
ItTimeContainer002(void)150 void ItTimeContainer002(void)
151 {
152 int status = 0;
153 auto pid = fork();
154 ASSERT_TRUE(pid != -1);
155 if (pid == 0) {
156 TimeContainerUnshare();
157 exit(EXIT_CODE_ERRNO_1);
158 }
159 auto ret = waitpid(pid, &status, 0);
160 ASSERT_EQ(ret, pid);
161 ret = WIFEXITED(status);
162 ASSERT_NE(ret, 0);
163 ret = WEXITSTATUS(status);
164 ASSERT_EQ(ret, 0);
165 }
166