1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2019 Linaro Limited. All rights reserved.
4 * Author: Sumit Garg <sumit.garg@linaro.org>
5 */
6
7 /*
8 * sync03
9 *
10 * It basically tests sync() to sync test file having large dirty file pages
11 * to block device. Also, it tests all supported filesystems on a test block
12 * device.
13 */
14
15 #define _GNU_SOURCE
16 #include <errno.h>
17 #include <stdlib.h>
18 #include <stdio.h>
19 #include <sys/types.h>
20 #include "tst_test.h"
21
22 #define MNTPOINT "mnt_point"
23 #define FNAME MNTPOINT"/test"
24 #define FILE_SIZE_MB 32
25 #define FILE_SIZE (FILE_SIZE_MB * TST_MB)
26 #define MODE 0644
27
verify_sync(void)28 static void verify_sync(void)
29 {
30 int fd;
31 unsigned long written;
32
33 fd = SAFE_OPEN(FNAME, O_RDWR|O_CREAT, MODE);
34
35 tst_dev_sync(fd);
36 tst_dev_bytes_written(tst_device->dev);
37
38 tst_fill_fd(fd, 0, TST_MB, FILE_SIZE_MB);
39
40 sync();
41
42 written = tst_dev_bytes_written(tst_device->dev);
43
44 SAFE_CLOSE(fd);
45
46 if (written >= FILE_SIZE)
47 tst_res(TPASS, "Test file synced to device");
48 else
49 tst_res(TFAIL, "Synced %li, expected %i", written, FILE_SIZE);
50 }
51
52 static struct tst_test test = {
53 .needs_root = 1,
54 .mount_device = 1,
55 .all_filesystems = 1,
56 .skip_filesystems = (const char *[]) {
57 "tmpfs",
58 NULL
59 },
60 .mntpoint = MNTPOINT,
61 .test_all = verify_sync,
62 };
63