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 "test.h"
33 #include "safe_macros.h"
34
35 static void setup(void);
36 struct test_case_t;
37 static void mkdir_verify(struct test_case_t *tc);
38 static void bad_addr_setup(struct test_case_t *tc);
39 static void cleanup(void);
40 static int mount_flag;
41
42 #define TST_EEXIST "tst_eexist"
43 #define TST_ENOENT "tst_enoent/tst"
44 #define TST_ENOTDIR "tst_enotdir/tst"
45 #define MODE 0777
46
47 #define MNT_POINT "mntpoint"
48 #define DIR_MODE (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP| \
49 S_IXGRP|S_IROTH|S_IXOTH)
50 #define TST_EROFS "mntpoint/tst_erofs"
51
52 char *TCID = "mkdir03";
53
54 static char long_dir[PATH_MAX+2];
55 static char loop_dir[PATH_MAX] = ".";
56 static const char *device;
57
58 static struct test_case_t {
59 char *pathname;
60 int mode;
61 int exp_errno;
62 void (*setupfunc) (struct test_case_t *tc);
63 } TC[] = {
64 #if !defined(UCLINUX)
65 {NULL, MODE, EFAULT, bad_addr_setup},
66 #endif
67 {long_dir, MODE, ENAMETOOLONG, NULL},
68 {TST_EEXIST, MODE, EEXIST, NULL},
69 {TST_ENOENT, MODE, ENOENT, NULL},
70 {TST_ENOTDIR, MODE, ENOTDIR, NULL},
71 {loop_dir, MODE, ELOOP, NULL},
72 {TST_EROFS, MODE, EROFS, NULL},
73 };
74
75 int TST_TOTAL = ARRAY_SIZE(TC);
76
main(int ac,char ** av)77 int main(int ac, char **av)
78 {
79 int i, lc;
80
81 tst_parse_opts(ac, av, NULL, NULL);
82
83 setup();
84
85 for (lc = 0; TEST_LOOPING(lc); lc++) {
86 tst_count = 0;
87 for (i = 0; i < TST_TOTAL; i++)
88 mkdir_verify(&TC[i]);
89 }
90
91 cleanup();
92 tst_exit();
93 }
94
setup(void)95 static void setup(void)
96 {
97 int i;
98 const char *fs_type;
99
100 tst_require_root();
101
102 tst_sig(NOFORK, DEF_HANDLER, cleanup);
103
104 TEST_PAUSE;
105
106 tst_tmpdir();
107
108 fs_type = tst_dev_fs_type();
109 device = tst_acquire_device(cleanup);
110
111 if (!device)
112 tst_brkm(TCONF, cleanup, "Failed to acquire device");
113
114 memset(long_dir, 'a', PATH_MAX+1);
115
116 SAFE_TOUCH(cleanup, TST_EEXIST, MODE, NULL);
117
118 SAFE_TOUCH(cleanup, "tst_enotdir", MODE, NULL);
119
120 SAFE_MKDIR(cleanup, "test_eloop", DIR_MODE);
121 SAFE_SYMLINK(cleanup, "../test_eloop", "test_eloop/test_eloop");
122 for (i = 0; i < 43; i++)
123 strcat(loop_dir, "/test_eloop");
124
125 tst_mkfs(cleanup, device, fs_type, NULL, NULL);
126 SAFE_MKDIR(cleanup, MNT_POINT, DIR_MODE);
127 if (mount(device, MNT_POINT, fs_type, MS_RDONLY, NULL) < 0) {
128 tst_brkm(TBROK | TERRNO, cleanup,
129 "mount device:%s failed", device);
130 }
131 mount_flag = 1;
132 }
133
134 #if !defined(UCLINUX)
bad_addr_setup(struct test_case_t * tc)135 static void bad_addr_setup(struct test_case_t *tc)
136 {
137 tc->pathname = SAFE_MMAP(cleanup, 0, 1, PROT_NONE,
138 MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
139 }
140 #endif
141
mkdir_verify(struct test_case_t * tc)142 static void mkdir_verify(struct test_case_t *tc)
143 {
144 if (tc->setupfunc != NULL)
145 tc->setupfunc(tc);
146
147 TEST(mkdir(tc->pathname, tc->mode));
148
149 if (TEST_RETURN != -1) {
150 tst_resm(TFAIL, "mkdir() returned %ld, expected -1, errno=%d",
151 TEST_RETURN, tc->exp_errno);
152 return;
153 }
154
155 if (TEST_ERRNO == tc->exp_errno) {
156 tst_resm(TPASS | TTERRNO, "mkdir() failed as expected");
157 } else {
158 tst_resm(TFAIL | TTERRNO,
159 "mkdir() failed unexpectedly; expected: %d - %s",
160 tc->exp_errno, strerror(tc->exp_errno));
161 }
162 }
163
cleanup(void)164 static void cleanup(void)
165 {
166 if (mount_flag && tst_umount(MNT_POINT) < 0)
167 tst_resm(TWARN | TERRNO, "umount device:%s failed", device);
168
169 if (device)
170 tst_release_device(device);
171
172 tst_rmdir();
173 }
174