1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2020 Viresh Kumar <viresh.kumar@linaro.org>
4 *
5 * Description:
6 * Basic pidfd_open() test to test invalid arguments.
7 */
8 #include "tst_test.h"
9 #include "lapi/pidfd_open.h"
10
11 pid_t expired_pid, my_pid, invalid_pid = -1;
12
13 static struct tcase {
14 char *name;
15 pid_t *pid;
16 int flags;
17 int exp_errno;
18 } tcases[] = {
19 {"expired pid", &expired_pid, 0, ESRCH},
20 {"invalid pid", &invalid_pid, 0, EINVAL},
21 {"invalid flags", &my_pid, 1, EINVAL},
22 };
23
setup(void)24 static void setup(void)
25 {
26 expired_pid = tst_get_unused_pid();
27 my_pid = getpid();
28 }
29
run(unsigned int n)30 static void run(unsigned int n)
31 {
32 struct tcase *tc = &tcases[n];
33
34 TEST(pidfd_open(*tc->pid, tc->flags));
35
36 if (TST_RET != -1) {
37 SAFE_CLOSE(TST_RET);
38 tst_res(TFAIL, "%s: pidfd_open succeeded unexpectedly (index: %d)",
39 tc->name, n);
40 return;
41 }
42
43 if (tc->exp_errno != TST_ERR) {
44 tst_res(TFAIL | TTERRNO, "%s: pidfd_open() should fail with %s",
45 tc->name, tst_strerrno(tc->exp_errno));
46 return;
47 }
48
49 tst_res(TPASS | TTERRNO, "%s: pidfd_open() failed as expected",
50 tc->name);
51 }
52
53 static struct tst_test test = {
54 .min_kver = "5.3",
55 .tcnt = ARRAY_SIZE(tcases),
56 .test = run,
57 .setup = setup,
58 };
59