1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) Wipro Technologies Ltd, 2005. All Rights Reserved.
4 * AUTHOR: Prashant P Yendigeri <[email protected]>
5 * Copyright (c) 2022 SUSE LLC Avinesh Kumar <[email protected]>
6 */
7
8 /*\
9 * [Description]
10 *
11 * Verify that statvfs() executes successfully for all
12 * available filesystems. Verify statvfs.f_namemax field
13 * by trying to create files of valid and invalid length names.
14 */
15
16 #include <sys/statvfs.h>
17 #include "tst_test.h"
18
19 #define MNT_POINT "mntpoint"
20 #define TEST_PATH MNT_POINT"/testfile"
21 #define NLS_MAX_CHARSET_SIZE 6
22
run(void)23 static void run(void)
24 {
25 struct statvfs buf;
26 char valid_fname[PATH_MAX], toolong_fname[PATH_MAX];
27 long fs_type;
28 long valid_len;
29
30 fs_type = tst_fs_type(TEST_PATH);
31
32 TST_EXP_PASS(statvfs(TEST_PATH, &buf));
33
34 valid_len = buf.f_namemax;
35 if (fs_type == TST_VFAT_MAGIC || fs_type == TST_EXFAT_MAGIC)
36 valid_len = buf.f_namemax / NLS_MAX_CHARSET_SIZE;
37
38 memset(valid_fname, 'a', valid_len);
39 memset(toolong_fname, 'b', valid_len + 1);
40
41 valid_fname[valid_len] = 0;
42 toolong_fname[valid_len+1] = 0;
43
44 TST_EXP_FD(creat(valid_fname, 0444));
45 if (TST_PASS)
46 SAFE_CLOSE(TST_RET);
47
48 TST_EXP_FAIL(creat(toolong_fname, 0444), ENAMETOOLONG);
49 }
50
setup(void)51 static void setup(void)
52 {
53 SAFE_TOUCH(TEST_PATH, 0666, NULL);
54 }
55
56 static struct tst_test test = {
57 .test_all = run,
58 .setup = setup,
59 .needs_root = 1,
60 .mount_device = 1,
61 .mntpoint = MNT_POINT,
62 .all_filesystems = 1
63 };
64