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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]
*
* Checks functionality for sched_setparam(2) for pid != 0
*
* This test forks a child and changes its parent's scheduling priority.
*/
#include <stdlib.h>
#include "tst_test.h"
#include "tst_sched.h"
static void run(void)
{
struct sched_variant *tv = &sched_variants[tst_variant];
struct sched_param p5 = { .sched_priority = 5 };
struct sched_param p;
pid_t child_pid;
child_pid = SAFE_FORK();
if (!child_pid) {
TST_EXP_PASS_SILENT(tv->sched_setparam(getppid(), &p5));
exit(0);
}
tst_reap_children();
TST_EXP_PASS_SILENT(tv->sched_getparam(0, &p));
if (p.sched_priority == p5.sched_priority)
tst_res(TPASS, "got expected priority %d", p.sched_priority);
else
tst_res(TFAIL, "got priority %d, expected 5", p.sched_priority);
}
void setup(void)
{
struct sched_variant *tv = &sched_variants[tst_variant];
struct sched_param p = { .sched_priority = 1 };
tst_res(TINFO, "Testing %s variant", tv->desc);
if (tv->sched_setscheduler(0, SCHED_FIFO, &p))
tst_brk(TBROK | TERRNO, "sched_setscheduler(0, SCHED_FIFO, 1)");
}
static struct tst_test test = {
.forks_child = 1,
.needs_root = 1,
.setup = setup,
.test_variants = ARRAY_SIZE(sched_variants),
.test_all = run,
};
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