unplugged-system/external/ltp/testcases/kernel/syscalls/sched_setparam/sched_setparam04.c

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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2021, BELLSOFT. All rights reserved.
* Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
* AUTHOR: Saji Kumar.V.R <saji.kumar@wipro.com>
*/
/*\
* [Description]
*
* Verify that:
* 1. sched_setparam(2) returns -1 and sets errno to ESRCH if the
* process with specified pid could not be found
* 2. sched_setparam(2) returns -1 and sets errno to EINVAL if
* the parameter pid is an invalid value (-1)
* 3. sched_setparam(2) returns -1 and sets errno to EINVAL if the
* parameter p is an invalid address
* 4. sched_setparam(2) returns -1 sets errno to EINVAL if the
* value for p.sched_priority is other than 0 for scheduling
* policy, SCHED_OTHER
*/
#include "tst_test.h"
#include "tst_sched.h"
static struct sched_param p = { .sched_priority = 0 };
static struct sched_param p1 = { .sched_priority = 1 };
static pid_t unused_pid;
static pid_t inval_pid = -1;
static pid_t zero_pid;
static struct test_cases_t {
char *desc;
pid_t *pid;
struct sched_param *p;
int exp_errno;
} tcases[] = {
{
"test with non-existing pid", &unused_pid, &p, ESRCH}, {
"test invalid pid value", &inval_pid, &p, EINVAL,}, {
"test with invalid address for p", &zero_pid, NULL, EINVAL}, {
"test with invalid p.sched_priority", &zero_pid, &p1, EINVAL}
};
static void setup(void)
{
tst_res(TINFO, "Testing %s variant", sched_variants[tst_variant].desc);
unused_pid = tst_get_unused_pid();
}
static void run(unsigned int n)
{
struct sched_variant *tv = &sched_variants[tst_variant];
struct test_cases_t *tc = &tcases[n];
TST_EXP_FAIL(tv->sched_setparam(*tc->pid, tc->p), tc->exp_errno, "%s", tc->desc);
}
static struct tst_test test = {
.setup = setup,
.test = run,
.test_variants = ARRAY_SIZE(sched_variants),
.tcnt = ARRAY_SIZE(tcases),
};