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 static void prot_none_pathname(struct tcase *tc);
50
51 static struct tcase {
52 char *pathname;
53 int exp_errno;
54 void (*setupfunc)(struct tcase *tc);
55 } TC[] = {
56 {NULL, EFAULT, prot_none_pathname},
57 {long_dir, ENAMETOOLONG, NULL},
58 {TST_EEXIST, EEXIST, NULL},
59 {TST_ENOENT, ENOENT, NULL},
60 {TST_ENOTDIR_DIR, ENOTDIR, NULL},
61 {loop_dir, ELOOP, NULL},
62 {TST_EROFS, EROFS, NULL},
63 };
64
verify_mkdir(unsigned int n)65 static void verify_mkdir(unsigned int n)
66 {
67 struct tcase *tc = TC + n;
68
69 TEST(mkdir(tc->pathname, MODE));
70 if (TEST_RETURN != -1) {
71 tst_res(TFAIL, "mkdir() returned %ld, expected -1, errno=%d",
72 TEST_RETURN, tc->exp_errno);
73 return;
74 }
75
76 if (TEST_ERRNO == tc->exp_errno) {
77 tst_res(TPASS | TTERRNO, "mkdir() failed as expected");
78 } else {
79 tst_res(TFAIL | TTERRNO,
80 "mkdir() failed unexpectedly; expected: %d - %s",
81 tc->exp_errno, strerror(tc->exp_errno));
82 }
83 }
84
prot_none_pathname(struct tcase * tc)85 static void prot_none_pathname(struct tcase *tc)
86 {
87 tc->pathname = SAFE_MMAP(0, 1, PROT_NONE,
88 MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
89 }
90
setup(void)91 static void setup(void)
92 {
93 unsigned int i;
94
95 SAFE_TOUCH(TST_EEXIST, MODE, NULL);
96 SAFE_TOUCH(TST_ENOTDIR_FILE, MODE, NULL);
97
98 SAFE_MKDIR("test_eloop", DIR_MODE);
99 SAFE_SYMLINK("../test_eloop", "test_eloop/test_eloop");
100 for (i = 0; i < 43; i++)
101 strcat(loop_dir, "/test_eloop");
102
103 for (i = 0; i < ARRAY_SIZE(TC); i++) {
104 if (TC[i].setupfunc)
105 TC[i].setupfunc(&TC[i]);
106 }
107 }
108
109 static struct tst_test test = {
110 .tcnt = ARRAY_SIZE(TC),
111 .needs_tmpdir = 1,
112 .needs_root = 1,
113 .needs_rofs = 1,
114 .mntpoint = MNT_POINT,
115 .setup = setup,
116 .test = verify_mkdir,
117 };
118