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Commit | Line | Data |
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6342140d AV |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | #define _GNU_SOURCE | |
3 | #include <errno.h> | |
4 | #include <fcntl.h> | |
5 | #include <sched.h> | |
6 | #include <stdio.h> | |
7 | #include <stdbool.h> | |
8 | #include <sys/stat.h> | |
9 | #include <sys/syscall.h> | |
10 | #include <sys/types.h> | |
11 | #include <sys/wait.h> | |
12 | #include <time.h> | |
13 | #include <unistd.h> | |
14 | #include <string.h> | |
15 | ||
16 | #include "log.h" | |
17 | #include "timens.h" | |
18 | ||
19 | #define OFFSET (36000) | |
20 | ||
21 | int main(int argc, char *argv[]) | |
22 | { | |
23 | struct timespec now, tst; | |
24 | int status, i; | |
25 | pid_t pid; | |
26 | ||
27 | if (argc > 1) { | |
28 | if (sscanf(argv[1], "%ld", &now.tv_sec) != 1) | |
29 | return pr_perror("sscanf"); | |
30 | ||
31 | for (i = 0; i < 2; i++) { | |
32 | _gettime(CLOCK_MONOTONIC, &tst, i); | |
33 | if (abs(tst.tv_sec - now.tv_sec) > 5) | |
34 | return pr_fail("%ld %ld\n", now.tv_sec, tst.tv_sec); | |
35 | } | |
36 | return 0; | |
37 | } | |
38 | ||
39 | nscheck(); | |
40 | ||
41 | ksft_set_plan(1); | |
42 | ||
43 | clock_gettime(CLOCK_MONOTONIC, &now); | |
44 | ||
45 | if (unshare_timens()) | |
46 | return 1; | |
47 | ||
48 | if (_settime(CLOCK_MONOTONIC, OFFSET)) | |
49 | return 1; | |
50 | ||
51 | for (i = 0; i < 2; i++) { | |
52 | _gettime(CLOCK_MONOTONIC, &tst, i); | |
53 | if (abs(tst.tv_sec - now.tv_sec) > 5) | |
54 | return pr_fail("%ld %ld\n", | |
55 | now.tv_sec, tst.tv_sec); | |
56 | } | |
57 | ||
58 | pid = vfork(); | |
59 | if (pid < 0) | |
60 | return pr_perror("fork"); | |
61 | ||
62 | if (pid == 0) { | |
63 | char now_str[64]; | |
64 | char *cargv[] = {"exec", now_str, NULL}; | |
65 | char *cenv[] = {NULL}; | |
66 | ||
67 | // Check that we are still in the source timens. | |
68 | for (i = 0; i < 2; i++) { | |
69 | _gettime(CLOCK_MONOTONIC, &tst, i); | |
70 | if (abs(tst.tv_sec - now.tv_sec) > 5) | |
71 | return pr_fail("%ld %ld\n", | |
72 | now.tv_sec, tst.tv_sec); | |
73 | } | |
74 | ||
75 | /* Check for proper vvar offsets after execve. */ | |
76 | snprintf(now_str, sizeof(now_str), "%ld", now.tv_sec + OFFSET); | |
77 | execve("/proc/self/exe", cargv, cenv); | |
78 | return pr_perror("execve"); | |
79 | } | |
80 | ||
81 | if (waitpid(pid, &status, 0) != pid) | |
82 | return pr_perror("waitpid"); | |
83 | ||
84 | if (status) | |
85 | ksft_exit_fail(); | |
86 | ||
87 | ksft_test_result_pass("exec\n"); | |
88 | ksft_exit_pass(); | |
89 | return 0; | |
90 | } |