1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2013 Fujitsu Ltd. Dan Li <[email protected]>
4 * Copyright (C) 2023 SUSE LLC Andrea Cervesato <[email protected]>
5 */
6
7 /*\
8 * [Description]
9 *
10 * Test for feature MS_BIND of mount, which performs a bind mount, making a file
11 * or a directory subtree visible at another point within a file system.
12 */
13
14 #include "tst_test.h"
15 #include <sys/mount.h>
16
17 #define MNTPOINT1 "mntpoint1"
18 #define TESTFILE1 MNTPOINT1 "/testfile"
19 #define TESTDIR1 MNTPOINT1 "/testdir"
20
21 #define MNTPOINT2 "mntpoint2"
22 #define TESTFILE2 MNTPOINT2 "/testfile"
23 #define TESTDIR2 MNTPOINT2 "/testdir"
24
setup(void)25 static void setup(void)
26 {
27 SAFE_MOUNT(tst_device->dev, MNTPOINT1, tst_device->fs_type, 0, NULL);
28
29 tst_res(TINFO, "Creating file in '%s'", TESTFILE1);
30
31 SAFE_FILE_PRINTF(TESTFILE1, "LTP TEST FILE");
32 SAFE_MKDIR(TESTDIR1, 0750);
33 }
34
cleanup(void)35 static void cleanup(void)
36 {
37 if (tst_is_mounted(MNTPOINT1))
38 SAFE_UMOUNT(MNTPOINT1);
39
40 if (tst_is_mounted(MNTPOINT2))
41 SAFE_UMOUNT(MNTPOINT2);
42 }
43
run(void)44 static void run(void)
45 {
46 SAFE_MKDIR(MNTPOINT2, 0750);
47 SAFE_MOUNT(MNTPOINT1, MNTPOINT2, tst_device->fs_type, MS_BIND, NULL);
48
49 TST_EXP_PASS(access(TESTFILE2, F_OK), "Accessing to '%s'", TESTFILE2);
50 TST_EXP_PASS(access(TESTDIR2, F_OK), "Accessing to '%s'", TESTDIR2);
51
52 if (tst_is_mounted(MNTPOINT2))
53 SAFE_UMOUNT(MNTPOINT2);
54
55 SAFE_RMDIR(MNTPOINT2);
56 }
57
58 static struct tst_test test = {
59 .setup = setup,
60 .cleanup = cleanup,
61 .test_all = run,
62 .needs_root = 1,
63 .format_device = 1,
64 .mntpoint = MNTPOINT1,
65 .all_filesystems = 1,
66 .skip_filesystems = (const char *const []){
67 "exfat",
68 "vfat",
69 "ntfs",
70 NULL
71 },
72 };
73