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 = 172800;
34 const int NSEC = 800000000;
35
childFunc(void * arg)36 static int childFunc(void *arg)
37 {
38 int ret;
39 struct timespec tp = *((struct timespec *)arg);
40 struct timespec tp1;
41
42 ret = clock_gettime(CLOCK_MONOTONIC_RAW, &tp1);
43 if (ret != 0) {
44 return EXIT_CODE_ERRNO_1;
45 }
46
47 ret = ((tp1.tv_sec >= tp.tv_sec + SEC));
48 if (ret != 1) {
49 return EXIT_CODE_ERRNO_2;
50 }
51
52 return 0;
53 }
WriteProcTime(int pid)54 static int WriteProcTime(int pid)
55 {
56 int ret;
57 char path[STR_LEN];
58 char timeOff[STR_LEN];
59
60 ret = sprintf_s(timeOff, STR_LEN, "monotonic %d %d", SEC, NSEC);
61 if (ret <= 0) {
62 return EXIT_CODE_ERRNO_5;
63 }
64 ret = sprintf_s(path, STR_LEN, "/proc/%d/time_offsets", pid);
65 if (ret <= 0) {
66 return EXIT_CODE_ERRNO_6;
67 }
68 int strLen = strlen(timeOff);
69 int fd = open(path, O_WRONLY);
70 if (fd == -1) {
71 return EXIT_CODE_ERRNO_3;
72 }
73
74 ret = write(fd, timeOff, strLen);
75 if (ret != strLen) {
76 close(fd);
77 return EXIT_CODE_ERRNO_4;
78 }
79
80 close(fd);
81 return 0;
82 }
83
TimeContainerUnshare(void)84 static void TimeContainerUnshare(void)
85 {
86 int ret;
87 int status;
88 struct timespec tp;
89
90 char *stack = (char *)mmap(NULL, STACK_SIZE, PROT_READ | PROT_WRITE, CLONE_STACK_MMAP_FLAG, -1, 0);
91 ASSERT_NE(stack, nullptr);
92 char *stackTop = stack + STACK_SIZE;
93
94 ret = unshare(CLONE_NEWTIME);
95 ASSERT_EQ(ret, 0);
96
97 ret = WriteProcTime(getpid());
98 ASSERT_EQ(ret, 0);
99
100 ret = clock_gettime(CLOCK_MONOTONIC_RAW, &tp);
101 ASSERT_EQ(ret, 0);
102
103 auto pid = clone(childFunc, stackTop, CLONE_NEWTIME | SIGCHLD, &tp);
104 ASSERT_TRUE(pid != -1);
105
106 ret = waitpid(pid, &status, 0);
107 ASSERT_EQ(ret, pid);
108
109 ret = WIFEXITED(status);
110 ASSERT_NE(ret, 0);
111
112 int exitCode = WEXITSTATUS(status);
113 ASSERT_EQ(exitCode, 0);
114
115 exit(0);
116 }
117
ItTimeContainer004(void)118 void ItTimeContainer004(void)
119 {
120 int status = 0;
121 auto pid = fork();
122 ASSERT_TRUE(pid != -1);
123 if (pid == 0) {
124 TimeContainerUnshare();
125 exit(EXIT_CODE_ERRNO_1);
126 }
127 auto ret = waitpid(pid, &status, 0);
128 ASSERT_EQ(ret, pid);
129 ret = WIFEXITED(status);
130 ASSERT_NE(ret, 0);
131 ret = WEXITSTATUS(status);
132 ASSERT_EQ(ret, 0);
133 }
134