1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2021, BELLSOFT. All rights reserved.
4 * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
5 * Author: Saji Kumar.V.R <[email protected]>
6 */
7
8 /*\
9 * [Description]
10 *
11 * Verify that:
12 *
13 * 1. sched_setparam(2) returns -1 and sets errno to ESRCH if the
14 * process with specified pid could not be found.
15 * 2. sched_setparam(2) returns -1 and sets errno to EINVAL if
16 * the parameter pid is an invalid value (-1).
17 * 3. sched_setparam(2) returns -1 and sets errno to EINVAL if the
18 * parameter p is an invalid address.
19 * 4. sched_setparam(2) returns -1 sets errno to EINVAL if the
20 * value for p.sched_priority is other than 0 for scheduling
21 * policy, SCHED_OTHER.
22 */
23
24 #include "tst_test.h"
25 #include "tst_sched.h"
26
27 static struct sched_param p = { .sched_priority = 0 };
28 static struct sched_param p1 = { .sched_priority = 1 };
29
30 static pid_t unused_pid;
31 static pid_t inval_pid = -1;
32 static pid_t zero_pid;
33
34 static struct test_cases_t {
35 char *desc;
36 pid_t *pid;
37 struct sched_param *p;
38 int exp_errno;
39 } tcases[] = {
40 {
41 "test with non-existing pid", &unused_pid, &p, ESRCH}, {
42 "test invalid pid value", &inval_pid, &p, EINVAL,}, {
43 "test with invalid address for p", &zero_pid, NULL, EINVAL}, {
44 "test with invalid p.sched_priority", &zero_pid, &p1, EINVAL}
45 };
46
setup(void)47 static void setup(void)
48 {
49 tst_res(TINFO, "Testing %s variant", sched_variants[tst_variant].desc);
50
51 unused_pid = tst_get_unused_pid();
52 }
53
run(unsigned int n)54 static void run(unsigned int n)
55 {
56 struct sched_variant *tv = &sched_variants[tst_variant];
57 struct test_cases_t *tc = &tcases[n];
58
59 TST_EXP_FAIL(tv->sched_setparam(*tc->pid, tc->p), tc->exp_errno, "%s", tc->desc);
60 }
61
62 static struct tst_test test = {
63 .setup = setup,
64 .test = run,
65 .test_variants = ARRAY_SIZE(sched_variants),
66 .tcnt = ARRAY_SIZE(tcases),
67 };
68