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 CHILD_FUNC_EXITCODE = 3;
33 const int PATH_LENGTH = 100;
34
ChildFun(void * p)35 static int ChildFun(void *p)
36 {
37 (void)p;
38 const int sleepSecond = 2;
39 (void)getpid();
40 (void)sleep(sleepSecond);
41 return CHILD_FUNC_EXITCODE;
42 }
43
ItMntContainer008(void)44 void ItMntContainer008(void)
45 {
46 pid_t parentPid;
47 int childPid;
48 void *pstk = nullptr;
49 int fd;
50 int ret;
51 int status;
52 char targetpath[PATH_LENGTH];
53 char old_mnt_link[PATH_LENGTH];
54 char new_mnt_link[PATH_LENGTH];
55 std::string containerType = "mnt";
56 int setFlag = CLONE_NEWNS;
57
58 parentPid = getpid();
59 pstk = malloc(STACK_SIZE);
60 ASSERT_NE(pstk, nullptr);
61
62 childPid = clone(ChildFun, (char *)pstk + STACK_SIZE, CLONE_NEWNS, nullptr);
63 ASSERT_NE(childPid, -1);
64
65 auto linkBuffer = ReadlinkContainer(parentPid, containerType.c_str());
66 ret = sprintf_s(old_mnt_link, PATH_LENGTH, "%s", linkBuffer.c_str());
67 ASSERT_GT(ret, 0);
68 ret = sprintf_s(targetpath, PATH_LENGTH, "/proc/%d/container/mnt", childPid);
69 ASSERT_GT(ret, 0);
70 fd = open(targetpath, O_RDONLY | O_CLOEXEC);
71 ASSERT_NE(fd, -1);
72
73 ret = setns(fd, setFlag);
74 ASSERT_EQ(ret, 0);
75
76 ret = close(fd);
77 ASSERT_EQ(ret, 0);
78
79 linkBuffer = ReadlinkContainer(parentPid, containerType.c_str());
80
81 ret = sprintf_s(new_mnt_link, PATH_LENGTH, "%s", linkBuffer.c_str());
82 ASSERT_GT(ret, 0);
83 ASSERT_STRNE(old_mnt_link, new_mnt_link);
84
85 ret = waitpid(childPid, &status, 0);
86 ASSERT_EQ(ret, childPid);
87
88 int exitCode = WEXITSTATUS(status);
89 ASSERT_EQ(exitCode, CHILD_FUNC_EXITCODE);
90 }
91