1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
4 */
5
6 /*
7 * Description:
8 * The testcase checks the various errnos of the unlink(2).
9 * 1) unlink() returns ENOENT if file doesn't exist.
10 * 2) unlink() returns ENOENT if path is empty.
11 * 3) unlink() returns ENOENT if path contains a non-existent file.
12 * 4) unlink() returns EFAULT if address is invalid.
13 * 5) unlink() returns ENOTDIR if path contains a regular file.
14 * 6) unlink() returns ENAMETOOLONG if path contains a regular file.
15 */
16
17 #include <errno.h>
18 #include <string.h>
19 #include <unistd.h>
20 #include <sys/param.h> /* for PATH_MAX */
21 #include "tst_test.h"
22
23 static char longpathname[PATH_MAX + 2];
24
25 static struct test_case_t {
26 char *name;
27 char *desc;
28 int exp_errno;
29 } tcases[] = {
30 {"nonexistfile", "non-existent file", ENOENT},
31 {"", "path is empty string", ENOENT},
32 {"nefile/file", "path contains a non-existent file", ENOENT},
33 {NULL, "invalid address", EFAULT},
34 {"file/file", "path contains a regular file", ENOTDIR},
35 {longpathname, "pathname too long", ENAMETOOLONG},
36 };
37
verify_unlink(unsigned int n)38 static void verify_unlink(unsigned int n)
39 {
40 struct test_case_t *tc = &tcases[n];
41
42 TEST(unlink(tc->name));
43 if (TST_RET != -1) {
44 tst_res(TFAIL, "unlink(<%s>) succeeded unexpectedly",
45 tc->desc);
46 return;
47 }
48
49 if (TST_ERR == tc->exp_errno) {
50 tst_res(TPASS | TTERRNO, "unlink(<%s>) failed as expected",
51 tc->desc);
52 } else {
53 tst_res(TFAIL | TTERRNO,
54 "unlink(<%s>) failed, expected errno: %s",
55 tc->desc, tst_strerrno(tc->exp_errno));
56 }
57 }
58
setup(void)59 static void setup(void)
60 {
61 unsigned int n;
62
63 SAFE_TOUCH("file", 0777, NULL);
64
65 memset(longpathname, 'a', PATH_MAX + 2);
66
67 for (n = 0; n < ARRAY_SIZE(tcases); n++) {
68 if (!tcases[n].name)
69 tcases[n].name = tst_get_bad_addr(NULL);
70 }
71 }
72
73 static struct tst_test test = {
74 .needs_tmpdir = 1,
75 .setup = setup,
76 .tcnt = ARRAY_SIZE(tcases),
77 .test = verify_unlink,
78 };
79