1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
4 * Copyright (c) Linux Test Project, 2002-2022
5 */
6
7 /*\
8 * [Description]
9 *
10 * Verify that unlink(2) fails with
11 *
12 * - ENOENT when file does not exist
13 * - ENOENT when pathname is empty
14 * - ENOENT when a component in pathname does not exist
15 * - EFAULT when pathname points outside the accessible address space
16 * - ENOTDIR when a component used as a directory in pathname is not,
17 * in fact, a directory
18 * - ENAMETOOLONG when pathname is too long
19 */
20
21 #include <errno.h>
22 #include <limits.h>
23 #include <string.h>
24 #include <unistd.h>
25 #include "tst_test.h"
26
27 static char longpathname[PATH_MAX + 2];
28
29 static struct test_case_t {
30 char *name;
31 char *desc;
32 int exp_errno;
33 } tcases[] = {
34 {"nonexistfile", "non-existent file", ENOENT},
35 {"", "path is empty string", ENOENT},
36 {"nefile/file", "path contains a non-existent file", ENOENT},
37 {NULL, "invalid address", EFAULT},
38 {"file/file", "path contains a regular file", ENOTDIR},
39 {longpathname, "pathname too long", ENAMETOOLONG},
40 };
41
verify_unlink(unsigned int n)42 static void verify_unlink(unsigned int n)
43 {
44 struct test_case_t *tc = &tcases[n];
45
46 TST_EXP_FAIL(unlink(tc->name), tc->exp_errno, "%s", tc->desc);
47 }
48
setup(void)49 static void setup(void)
50 {
51 size_t n;
52
53 SAFE_TOUCH("file", 0777, NULL);
54
55 memset(longpathname, 'a', PATH_MAX + 2);
56
57 for (n = 0; n < ARRAY_SIZE(tcases); n++) {
58 if (!tcases[n].name)
59 tcases[n].name = tst_get_bad_addr(NULL);
60 }
61 }
62
63 static struct tst_test test = {
64 .needs_tmpdir = 1,
65 .setup = setup,
66 .tcnt = ARRAY_SIZE(tcases),
67 .test = verify_unlink,
68 };
69