1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2020 Viresh Kumar <viresh.kumar@linaro.org>
4 *
5 * Basic openat2() test to check various failures.
6 */
7 #include "tst_test.h"
8 #include "lapi/openat2.h"
9
10 #define TEST_FILE "test_file"
11
12 static struct open_how *how;
13 static struct open_how_pad *phow;
14
15 static struct tcase {
16 const char *name;
17 int dfd;
18 const char *pathname;
19 uint64_t flags;
20 uint64_t mode;
21 uint64_t resolve;
22 struct open_how **how;
23 size_t size;
24 int exp_errno;
25 } tcases[] = {
26 {"invalid-dfd", -1, TEST_FILE, O_RDWR | O_CREAT, S_IRWXU, 0, &how, sizeof(*how), EBADF},
27 {"invalid-pathname", AT_FDCWD, NULL, O_RDONLY | O_CREAT, S_IRUSR, 0, &how, sizeof(*how), EFAULT},
28 {"invalid-flags", AT_FDCWD, TEST_FILE, O_RDONLY, S_IWUSR, 0, &how, sizeof(*how), EINVAL},
29 {"invalid-mode", AT_FDCWD, TEST_FILE, O_RDWR | O_CREAT, -1, 0, &how, sizeof(*how), EINVAL},
30 {"invalid-resolve", AT_FDCWD, TEST_FILE, O_RDWR | O_CREAT, S_IRWXU, -1, &how, sizeof(*how), EINVAL},
31 {"invalid-size-zero", AT_FDCWD, TEST_FILE, O_RDWR | O_CREAT, S_IRWXU, 0, &how, 0, EINVAL},
32 {"invalid-size-small", AT_FDCWD, TEST_FILE, O_RDWR | O_CREAT, S_IRWXU, 0, &how, sizeof(*how) - 1, EINVAL},
33 {"invalid-size-big", AT_FDCWD, TEST_FILE, O_RDWR | O_CREAT, S_IRWXU, 0, &how, sizeof(*how) + 1, EFAULT},
34 {"invalid-size-big-with-pad", AT_FDCWD, TEST_FILE, O_RDWR | O_CREAT, S_IRWXU, 0, (struct open_how **)&phow, sizeof(*how) + 8, E2BIG},
35 };
36
setup(void)37 static void setup(void)
38 {
39 openat2_supported_by_kernel();
40 phow->pad = 0xDEAD;
41 }
42
run(unsigned int n)43 static void run(unsigned int n)
44 {
45 struct tcase *tc = &tcases[n];
46 struct open_how *myhow = *tc->how;
47
48 myhow->flags = tc->flags;
49 myhow->mode = tc->mode;
50 myhow->resolve = tc->resolve;
51
52 TEST(openat2(tc->dfd, tc->pathname, myhow, tc->size));
53
54 if (TST_RET >= 0) {
55 SAFE_CLOSE(TST_RET);
56 tst_res(TFAIL, "%s: openat2() passed unexpectedly",
57 tc->name);
58 return;
59 }
60
61 if (tc->exp_errno != TST_ERR) {
62 tst_res(TFAIL | TTERRNO, "%s: openat2() should fail with %s",
63 tc->name, tst_strerrno(tc->exp_errno));
64 return;
65 }
66
67 tst_res(TPASS | TTERRNO, "%s: openat2() failed as expected", tc->name);
68 }
69
70 static struct tst_test test = {
71 .tcnt = ARRAY_SIZE(tcases),
72 .test = run,
73 .setup = setup,
74 .needs_tmpdir = 1,
75 .bufs = (struct tst_buffers []) {
76 {&how, .size = sizeof(*how)},
77 {&phow, .size = sizeof(*phow)},
78 {},
79 }
80 };
81