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      1 // SPDX-License-Identifier: GPL-2.0 or later
      2 /*
      3  *  Copyright (c) Zilogic Systems Pvt. Ltd., 2018
      4  *  Email : code (at) zilogic.com
      5  */
      6 
      7 /*
      8  * DESCRIPTION :
      9  *
     10  * Test-Case 1 : Testing btime
     11  * flow :       The time before and after the execution of the create
     12  *              system call is noted.
     13  *		It is checked whether the birth time returned by statx lies in
     14  *              this range.
     15  *
     16  * Test-Case 2 : Testing mtime
     17  * flow :       The time before and after the execution of the write
     18  *              system call is noted.
     19  *              It is checked whether the modification time returned
     20  *              by statx lies in this range.
     21  *
     22  * Test-Case 3 : Testing atime
     23  * flow :       The time before and after the execution of the read
     24  *              system call is noted.
     25  *              It is checked whether the access time returned by statx lies in
     26  *              this range.
     27  *
     28  * Test-Case 4 : Testing ctime
     29  * flow :	The time before and after the execution of the chmod
     30  *              system call is noted.
     31  *              It is checked whether the status change time returned by statx
     32  *              lies in this range.
     33  *
     34  */
     35 
     36 #define _GNU_SOURCE
     37 #include <stdio.h>
     38 #include <sys/mount.h>
     39 #include <time.h>
     40 
     41 #include "tst_test.h"
     42 #include "tst_safe_clocks.h"
     43 #include "tst_safe_macros.h"
     44 #include "tst_timer.h"
     45 #include "lapi/stat.h"
     46 #include "lapi/mount.h"
     47 #include "lapi/fcntl.h"
     48 #include "lapi/posix_clocks.h"
     49 
     50 #define MOUNT_POINT "mount_ext"
     51 #define TEST_FILE MOUNT_POINT"/test_file.txt"
     52 #define SIZE 2
     53 
     54 static int fd;
     55 
     56 static void timestamp_to_timespec(const struct statx_timestamp *timestamp,
     57 				  struct timespec *timespec)
     58 {
     59 	timespec->tv_sec = timestamp->tv_sec;
     60 	timespec->tv_nsec = timestamp->tv_nsec;
     61 }
     62 
     63 static void clock_wait_tick(void)
     64 {
     65 	struct timespec res;
     66 	unsigned int usecs;
     67 
     68 	SAFE_CLOCK_GETRES(CLOCK_REALTIME_COARSE, &res);
     69 	usecs = tst_timespec_to_us(res);
     70 
     71 	usleep(usecs);
     72 }
     73 
     74 static void create_file(void)
     75 {
     76 	if (fd > 0) {
     77 		SAFE_CLOSE(fd);
     78 		SAFE_UNLINK(TEST_FILE);
     79 	}
     80 	fd = SAFE_OPEN(TEST_FILE, O_CREAT | O_RDWR, 0666);
     81 }
     82 
     83 static void write_file(void)
     84 {
     85 	char data[SIZE] = "hi";
     86 
     87 	SAFE_WRITE(0, fd, data, sizeof(data));
     88 }
     89 
     90 static void read_file(void)
     91 {
     92 	char data[SIZE];
     93 
     94 	SAFE_READ(0, fd, data, sizeof(data));
     95 }
     96 
     97 static void change_mode(void)
     98 {
     99 	SAFE_CHMOD(TEST_FILE, 0777);
    100 }
    101 
    102 static struct test_case {
    103 	void (*operation)(void);
    104 	char *op_name;
    105 } tcases[] = {
    106 	{.operation = create_file,
    107 	 .op_name = "Birth time"},
    108 	{.operation = write_file,
    109 	 .op_name = "Modified time"},
    110 	{.operation = read_file,
    111 	 .op_name = "Access time"},
    112 	{.operation = change_mode,
    113 	 .op_name = "Change time"}
    114 };
    115 
    116 static void test_statx(unsigned int test_nr)
    117 {
    118 	struct statx buff;
    119 	struct timespec before_time;
    120 	struct timespec after_time;
    121 	struct timespec statx_time = {0, 0};
    122 
    123 	struct test_case *tc = &tcases[test_nr];
    124 
    125 	SAFE_CLOCK_GETTIME(CLOCK_REALTIME_COARSE, &before_time);
    126 	clock_wait_tick();
    127 	tc->operation();
    128 	clock_wait_tick();
    129 	SAFE_CLOCK_GETTIME(CLOCK_REALTIME_COARSE, &after_time);
    130 
    131 	TEST(statx(AT_FDCWD, TEST_FILE, 0, STATX_ALL, &buff));
    132 	if (TST_RET != 0) {
    133 		tst_brk(TFAIL | TTERRNO,
    134 			"statx(AT_FDCWD, %s, 0, STATX_ALL, &buff)",
    135 			TEST_FILE);
    136 	}
    137 
    138 	switch (test_nr) {
    139 	case 0:
    140 		timestamp_to_timespec(&buff.stx_btime, &statx_time);
    141 		break;
    142 	case 1:
    143 		timestamp_to_timespec(&buff.stx_mtime, &statx_time);
    144 		break;
    145 	case 2:
    146 		timestamp_to_timespec(&buff.stx_atime, &statx_time);
    147 		break;
    148 	case 3:
    149 		timestamp_to_timespec(&buff.stx_ctime, &statx_time);
    150 		break;
    151 	}
    152 	if (tst_timespec_lt(statx_time, before_time))
    153 		tst_res(TFAIL, "%s < before time", tc->op_name);
    154 	else if (tst_timespec_lt(after_time, statx_time))
    155 		tst_res(TFAIL, "%s > after_time", tc->op_name);
    156 	else
    157 		tst_res(TPASS, "%s Passed", tc->op_name);
    158 }
    159 
    160 
    161 static void cleanup(void)
    162 {
    163 	if (fd > 0)
    164 		SAFE_CLOSE(fd);
    165 }
    166 
    167 static struct tst_test test = {
    168 	.cleanup = cleanup,
    169 	.tcnt = ARRAY_SIZE(tcases),
    170 	.test = test_statx,
    171 	.min_kver = "4.11",
    172 	.needs_root = 1,
    173 	.needs_tmpdir = 1,
    174 	.mntpoint = MOUNT_POINT,
    175 	.mount_device = 1,
    176 	.dev_fs_type = "ext4",
    177 	.dev_fs_opts = (const char *const []){"-I", "256", NULL},
    178 	.mnt_flags = MS_STRICTATIME,
    179 };
    180