1 /*
2 * Copyright (c) International Business Machines Corp., 2001
3 * 07/2001 Ported by Wayne Boyer
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19 /*
20 * DESCRIPTION
21 * check mkdir() with various error conditions that should produce
22 * EFAULT, ENAMETOOLONG, EEXIST, ENOENT, ENOTDIR, ELOOP and EROFS
23 */
24
25 #include <errno.h>
26 #include <sys/types.h>
27 #include <sys/stat.h>
28 #include <sys/mman.h>
29 #include <fcntl.h>
30 #include <sys/mount.h>
31
32 #include "tst_test.h"
33
34 #define TST_EEXIST "tst_eexist"
35 #define TST_ENOENT "tst_enoent/tst"
36 #define TST_ENOTDIR_FILE "tst_enotdir"
37 #define TST_ENOTDIR_DIR "tst_enotdir/tst"
38 #define MODE 0777
39
40 #define MNT_POINT "mntpoint"
41 #define DIR_MODE (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP| \
42 S_IXGRP|S_IROTH|S_IXOTH)
43 #define TST_EROFS "mntpoint/tst_erofs"
44
45 static char long_dir[PATH_MAX + 2] = {[0 ... PATH_MAX + 1] = 'a'};
46 static char loop_dir[PATH_MAX] = ".";
47
48 struct tcase;
49
50 static struct tcase {
51 char *pathname;
52 int exp_errno;
53 } TC[] = {
54 {NULL, EFAULT},
55 {long_dir, ENAMETOOLONG},
56 {TST_EEXIST, EEXIST},
57 {TST_ENOENT, ENOENT},
58 {TST_ENOTDIR_DIR, ENOTDIR},
59 {loop_dir, ELOOP},
60 {TST_EROFS, EROFS},
61 };
62
verify_mkdir(unsigned int n)63 static void verify_mkdir(unsigned int n)
64 {
65 struct tcase *tc = TC + n;
66
67 TEST(mkdir(tc->pathname, MODE));
68 if (TST_RET != -1) {
69 tst_res(TFAIL, "mkdir() returned %ld, expected -1, errno=%d",
70 TST_RET, tc->exp_errno);
71 return;
72 }
73
74 if (TST_ERR == tc->exp_errno) {
75 tst_res(TPASS | TTERRNO, "mkdir() failed as expected");
76 } else {
77 tst_res(TFAIL | TTERRNO,
78 "mkdir() failed unexpectedly; expected: %d - %s",
79 tc->exp_errno, strerror(tc->exp_errno));
80 }
81 }
82
setup(void)83 static void setup(void)
84 {
85 unsigned int i;
86
87 SAFE_TOUCH(TST_EEXIST, MODE, NULL);
88 SAFE_TOUCH(TST_ENOTDIR_FILE, MODE, NULL);
89
90 for (i = 0; i < ARRAY_SIZE(TC); i++) {
91 if (TC[i].exp_errno == EFAULT)
92 TC[i].pathname = tst_get_bad_addr(NULL);
93 }
94
95 SAFE_MKDIR("test_eloop", DIR_MODE);
96 SAFE_SYMLINK("../test_eloop", "test_eloop/test_eloop");
97 for (i = 0; i < 43; i++)
98 strcat(loop_dir, "/test_eloop");
99 }
100
101 static struct tst_test test = {
102 .tcnt = ARRAY_SIZE(TC),
103 .needs_tmpdir = 1,
104 .needs_root = 1,
105 .needs_rofs = 1,
106 .mntpoint = MNT_POINT,
107 .setup = setup,
108 .test = verify_mkdir,
109 };
110