1 /*
2 * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
3 *
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18 /*
19 * Description:
20 * The testcase checks the various errnos of the unlink(2).
21 * 1) unlink() returns ENOENT if file doesn't exist.
22 * 2) unlink() returns ENOENT if path is empty.
23 * 3) unlink() returns ENOENT if path contains a non-existent file.
24 * 4) unlink() returns EFAULT if address is invalid.
25 * 5) unlink() returns ENOTDIR if path contains a regular file.
26 * 6) unlink() returns ENAMETOOLONG if path contains a regular file.
27 */
28
29 #include <errno.h>
30 #include <string.h>
31 #include <unistd.h>
32 #include <sys/param.h> /* for PATH_MAX */
33 #include "tst_test.h"
34
35 static char longpathname[PATH_MAX + 2];
36
37 static struct test_case_t {
38 char *name;
39 char *desc;
40 int exp_errno;
41 } tcases[] = {
42 {"nonexistfile", "non-existent file", ENOENT},
43 {"", "path is empty string", ENOENT},
44 {"nefile/file", "path contains a non-existent file", ENOENT},
45 {NULL, "invalid address", EFAULT},
46 {"file/file", "path contains a regular file", ENOTDIR},
47 {longpathname, "pathname too long", ENAMETOOLONG},
48 };
49
verify_unlink(unsigned int n)50 static void verify_unlink(unsigned int n)
51 {
52 struct test_case_t *tc = &tcases[n];
53
54 TEST(unlink(tc->name));
55 if (TST_RET != -1) {
56 tst_res(TFAIL, "unlink(<%s>) succeeded unexpectedly",
57 tc->desc);
58 return;
59 }
60
61 if (TST_ERR == tc->exp_errno) {
62 tst_res(TPASS | TTERRNO, "unlink(<%s>) failed as expected",
63 tc->desc);
64 } else {
65 tst_res(TFAIL | TTERRNO,
66 "unlink(<%s>) failed, expected errno: %s",
67 tc->desc, tst_strerrno(tc->exp_errno));
68 }
69 }
70
setup(void)71 static void setup(void)
72 {
73 unsigned int n;
74
75 SAFE_TOUCH("file", 0777, NULL);
76
77 memset(longpathname, 'a', PATH_MAX + 2);
78
79 for (n = 0; n < ARRAY_SIZE(tcases); n++) {
80 if (!tcases[n].name)
81 tcases[n].name = tst_get_bad_addr(NULL);
82 }
83 }
84
85 static struct tst_test test = {
86 .needs_tmpdir = 1,
87 .setup = setup,
88 .tcnt = ARRAY_SIZE(tcases),
89 .test = verify_unlink,
90 };
91