1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) Zilogic Systems Pvt. Ltd., 2018
4 * Email : [email protected]
5 */
6
7 /*\
8 * [Description]
9 *
10 * Test the following file timestamps of statx syscall:
11 *
12 * - btime - The time before and after the execution of the create system call is noted.
13 *
14 * - mtime - The time before and after the execution of the write system call is noted.
15 *
16 * - atime - The time before and after the execution of the read system call is noted.
17 *
18 * - ctime - The time before and after the execution of the chmod system call is noted.
19 */
20
21 #define _GNU_SOURCE
22 #include <stdio.h>
23 #include <time.h>
24
25 #include "tst_test.h"
26 #include "tst_safe_clocks.h"
27 #include "tst_safe_macros.h"
28 #include "tst_timer.h"
29 #include "lapi/stat.h"
30 #include "lapi/mount.h"
31 #include "lapi/fcntl.h"
32
33 #define MOUNT_POINT "mount_ext"
34 #define TEST_FILE MOUNT_POINT"/test_file.txt"
35 #define SIZE 2
36
37 static int fd;
38
timestamp_to_timespec(const struct statx_timestamp * timestamp,struct timespec * timespec)39 static void timestamp_to_timespec(const struct statx_timestamp *timestamp,
40 struct timespec *timespec)
41 {
42 timespec->tv_sec = timestamp->tv_sec;
43 timespec->tv_nsec = timestamp->tv_nsec;
44 }
45
clock_wait_tick(void)46 static void clock_wait_tick(void)
47 {
48 struct timespec res;
49 unsigned int usecs;
50
51 SAFE_CLOCK_GETRES(CLOCK_REALTIME_COARSE, &res);
52 usecs = tst_timespec_to_us(res);
53
54 usleep(usecs);
55 }
56
create_file(void)57 static void create_file(void)
58 {
59 if (fd > 0) {
60 SAFE_CLOSE(fd);
61 SAFE_UNLINK(TEST_FILE);
62 }
63 fd = SAFE_OPEN(TEST_FILE, O_CREAT | O_RDWR, 0666);
64 }
65
write_file(void)66 static void write_file(void)
67 {
68 char data[SIZE] = "hi";
69
70 SAFE_WRITE(SAFE_WRITE_ANY, fd, data, sizeof(data));
71 }
72
read_file(void)73 static void read_file(void)
74 {
75 char data[SIZE];
76
77 SAFE_READ(0, fd, data, sizeof(data));
78 }
79
change_mode(void)80 static void change_mode(void)
81 {
82 SAFE_CHMOD(TEST_FILE, 0777);
83 }
84
85 static struct test_case {
86 void (*operation)(void);
87 char *op_name;
88 } tcases[] = {
89 {.operation = create_file,
90 .op_name = "Birth time"},
91 {.operation = write_file,
92 .op_name = "Modified time"},
93 {.operation = read_file,
94 .op_name = "Access time"},
95 {.operation = change_mode,
96 .op_name = "Change time"}
97 };
98
test_statx(unsigned int test_nr)99 static void test_statx(unsigned int test_nr)
100 {
101 struct statx buff;
102 struct timespec before_time;
103 struct timespec after_time;
104 struct timespec statx_time = {0, 0};
105
106 struct test_case *tc = &tcases[test_nr];
107
108 SAFE_CLOCK_GETTIME(CLOCK_REALTIME_COARSE, &before_time);
109 clock_wait_tick();
110 tc->operation();
111 clock_wait_tick();
112 SAFE_CLOCK_GETTIME(CLOCK_REALTIME, &after_time);
113
114 TEST(statx(AT_FDCWD, TEST_FILE, 0, STATX_BASIC_STATS | STATX_BTIME, &buff));
115 if (TST_RET != 0) {
116 tst_brk(TFAIL | TTERRNO,
117 "statx(AT_FDCWD, %s, 0, STATX_BASIC_STATS | STATX_BTIME, &buff)",
118 TEST_FILE);
119 }
120
121 switch (test_nr) {
122 case 0:
123 timestamp_to_timespec(&buff.stx_btime, &statx_time);
124 break;
125 case 1:
126 timestamp_to_timespec(&buff.stx_mtime, &statx_time);
127 break;
128 case 2:
129 timestamp_to_timespec(&buff.stx_atime, &statx_time);
130 break;
131 case 3:
132 timestamp_to_timespec(&buff.stx_ctime, &statx_time);
133 break;
134 }
135 if (tst_timespec_lt(statx_time, before_time))
136 tst_res(TFAIL, "%s < before time", tc->op_name);
137 else if (tst_timespec_lt(after_time, statx_time))
138 tst_res(TFAIL, "%s > after_time", tc->op_name);
139 else
140 tst_res(TPASS, "%s Passed", tc->op_name);
141 }
142
143
cleanup(void)144 static void cleanup(void)
145 {
146 if (fd > 0)
147 SAFE_CLOSE(fd);
148 }
149
150 static struct tst_test test = {
151 .cleanup = cleanup,
152 .tcnt = ARRAY_SIZE(tcases),
153 .test = test_statx,
154 .min_kver = "4.11",
155 .needs_root = 1,
156 .mntpoint = MOUNT_POINT,
157 .mount_device = 1,
158 .dev_fs_type = "ext4",
159 .dev_fs_opts = (const char *const []){"-I", "256", NULL},
160 .mnt_flags = MS_STRICTATIME,
161 };
162