1 // SPDX-License-Identifier: GPL-2.0 or later
2 /*
3 * Copyright (c) Zilogic Systems Pvt. Ltd., 2018
4 * Email : code@zilogic.com
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 <sys/mount.h>
24 #include <time.h>
25
26 #include "tst_test.h"
27 #include "tst_safe_clocks.h"
28 #include "tst_safe_macros.h"
29 #include "tst_timer.h"
30 #include "lapi/stat.h"
31 #include "lapi/mount.h"
32 #include "lapi/fcntl.h"
33
34 #define MOUNT_POINT "mount_ext"
35 #define TEST_FILE MOUNT_POINT"/test_file.txt"
36 #define SIZE 2
37
38 static int fd;
39
timestamp_to_timespec(const struct statx_timestamp * timestamp,struct timespec * timespec)40 static void timestamp_to_timespec(const struct statx_timestamp *timestamp,
41 struct timespec *timespec)
42 {
43 timespec->tv_sec = timestamp->tv_sec;
44 timespec->tv_nsec = timestamp->tv_nsec;
45 }
46
clock_wait_tick(void)47 static void clock_wait_tick(void)
48 {
49 struct timespec res;
50 unsigned int usecs;
51
52 SAFE_CLOCK_GETRES(CLOCK_REALTIME_COARSE, &res);
53 usecs = tst_timespec_to_us(res);
54
55 usleep(usecs);
56 }
57
create_file(void)58 static void create_file(void)
59 {
60 if (fd > 0) {
61 SAFE_CLOSE(fd);
62 SAFE_UNLINK(TEST_FILE);
63 }
64 fd = SAFE_OPEN(TEST_FILE, O_CREAT | O_RDWR, 0666);
65 }
66
write_file(void)67 static void write_file(void)
68 {
69 char data[SIZE] = "hi";
70
71 SAFE_WRITE(0, fd, data, sizeof(data));
72 }
73
read_file(void)74 static void read_file(void)
75 {
76 char data[SIZE];
77
78 SAFE_READ(0, fd, data, sizeof(data));
79 }
80
change_mode(void)81 static void change_mode(void)
82 {
83 SAFE_CHMOD(TEST_FILE, 0777);
84 }
85
86 static struct test_case {
87 void (*operation)(void);
88 char *op_name;
89 } tcases[] = {
90 {.operation = create_file,
91 .op_name = "Birth time"},
92 {.operation = write_file,
93 .op_name = "Modified time"},
94 {.operation = read_file,
95 .op_name = "Access time"},
96 {.operation = change_mode,
97 .op_name = "Change time"}
98 };
99
test_statx(unsigned int test_nr)100 static void test_statx(unsigned int test_nr)
101 {
102 struct statx buff;
103 struct timespec before_time;
104 struct timespec after_time;
105 struct timespec statx_time = {0, 0};
106
107 struct test_case *tc = &tcases[test_nr];
108
109 SAFE_CLOCK_GETTIME(CLOCK_REALTIME_COARSE, &before_time);
110 clock_wait_tick();
111 tc->operation();
112 clock_wait_tick();
113 SAFE_CLOCK_GETTIME(CLOCK_REALTIME_COARSE, &after_time);
114
115 TEST(statx(AT_FDCWD, TEST_FILE, 0, STATX_ALL, &buff));
116 if (TST_RET != 0) {
117 tst_brk(TFAIL | TTERRNO,
118 "statx(AT_FDCWD, %s, 0, STATX_ALL, &buff)",
119 TEST_FILE);
120 }
121
122 switch (test_nr) {
123 case 0:
124 timestamp_to_timespec(&buff.stx_btime, &statx_time);
125 break;
126 case 1:
127 timestamp_to_timespec(&buff.stx_mtime, &statx_time);
128 break;
129 case 2:
130 timestamp_to_timespec(&buff.stx_atime, &statx_time);
131 break;
132 case 3:
133 timestamp_to_timespec(&buff.stx_ctime, &statx_time);
134 break;
135 }
136 if (tst_timespec_lt(statx_time, before_time))
137 tst_res(TFAIL, "%s < before time", tc->op_name);
138 else if (tst_timespec_lt(after_time, statx_time))
139 tst_res(TFAIL, "%s > after_time", tc->op_name);
140 else
141 tst_res(TPASS, "%s Passed", tc->op_name);
142 }
143
144
cleanup(void)145 static void cleanup(void)
146 {
147 if (fd > 0)
148 SAFE_CLOSE(fd);
149 }
150
151 static struct tst_test test = {
152 .cleanup = cleanup,
153 .tcnt = ARRAY_SIZE(tcases),
154 .test = test_statx,
155 .min_kver = "4.11",
156 .needs_root = 1,
157 .mntpoint = MOUNT_POINT,
158 .mount_device = 1,
159 .dev_fs_type = "ext4",
160 .dev_fs_opts = (const char *const []){"-I", "256", NULL},
161 .mnt_flags = MS_STRICTATIME,
162 };
163