1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* Copyright (c) International Business Machines Corp., 2001
3 * Ported to LTP: Wayne Boyer
4 */
5 /*
6 * Description:
7 * 1) attempt to rmdir() non-empty directory -> ENOTEMPTY
8 * 2) attempt to rmdir() directory with long path name -> ENAMETOOLONG
9 * 3) attempt to rmdir() non-existing directory -> ENOENT
10 * 4) attempt to rmdir() a file -> ENOTDIR
11 * 5) attempt to rmdir() invalid pointer -> EFAULT
12 * 6) attempt to rmdir() symlink loop -> ELOOP
13 * 7) attempt to rmdir() dir on RO mounted FS -> EROFS
14 * 8) attempt to rmdir() mount point -> EBUSY
15 * 9) attempt to rmdir() current directory "." -> EINVAL
16 */
17
18 #include <errno.h>
19
20 #include "tst_test.h"
21
22 #define DIR_MODE (S_IRWXU | S_IRWXG | S_IRWXO)
23 #define FILE_MODE (S_IRWXU | S_IRWXG | S_IRWXO)
24
25 #define TESTDIR "testdir"
26 #define TESTDIR2 "nosuchdir/testdir2"
27 #define TESTDIR3 "testfile2/testdir3"
28 #define TESTDIR4 "/loopdir"
29 #define MNT_POINT "mntpoint"
30 #define TESTDIR5 "mntpoint/dir"
31 #define TESTFILE "testdir/testfile"
32 #define TESTFILE2 "testfile2"
33
34 static char longpathname[PATH_MAX + 2];
35 static char looppathname[sizeof(TESTDIR4) * 43] = ".";
36
37 static struct testcase {
38 char *dir;
39 int exp_errno;
40 } tcases[] = {
41 {TESTDIR, ENOTEMPTY},
42 {longpathname, ENAMETOOLONG},
43 {TESTDIR2, ENOENT},
44 {TESTDIR3, ENOTDIR},
45 {NULL, EFAULT},
46 {looppathname, ELOOP},
47 {TESTDIR5, EROFS},
48 {MNT_POINT, EBUSY},
49 {".", EINVAL}
50 };
51
setup(void)52 static void setup(void)
53 {
54 unsigned int i;
55
56 SAFE_MKDIR(TESTDIR, DIR_MODE);
57 SAFE_TOUCH(TESTFILE, FILE_MODE, NULL);
58
59 memset(longpathname, 'a', PATH_MAX + 1);
60
61 SAFE_TOUCH(TESTFILE2, FILE_MODE, NULL);
62
63 for (i = 0; i < ARRAY_SIZE(tcases); i++) {
64 if (!tcases[i].dir)
65 tcases[i].dir = tst_get_bad_addr(NULL);
66 }
67
68 /*
69 * NOTE: the ELOOP test is written based on that the
70 * consecutive symlinks limit in kernel is hardwired
71 * to 40.
72 */
73 SAFE_MKDIR("loopdir", DIR_MODE);
74 SAFE_SYMLINK("../loopdir", "loopdir/loopdir");
75 for (i = 0; i < 43; i++)
76 strcat(looppathname, TESTDIR4);
77 }
78
verify_rmdir(unsigned int n)79 static void verify_rmdir(unsigned int n)
80 {
81 struct testcase *tc = &tcases[n];
82
83 TEST(rmdir(tc->dir));
84
85 if (TST_RET != -1) {
86 tst_res(TFAIL, "rmdir() succeeded unexpectedly (%li)",
87 TST_RET);
88 return;
89 }
90
91 if (TST_ERR == tc->exp_errno) {
92 tst_res(TPASS | TTERRNO, "rmdir() failed as expected");
93 return;
94 }
95
96 tst_res(TFAIL | TTERRNO,
97 "rmdir() failed unexpectedly; expected: %d - %s",
98 tc->exp_errno, tst_strerrno(tc->exp_errno));
99 }
100
101 static struct tst_test test = {
102 .setup = setup,
103 .tcnt = ARRAY_SIZE(tcases),
104 .test = verify_rmdir,
105 .needs_root = 1,
106 .needs_rofs = 1,
107 .mntpoint = MNT_POINT,
108 };
109