[v2,05/16] syscalls/sched_setparam02: convert to new API

diff --git a/testcases/kernel/syscalls/sched_setparam/sched_setparam02.c b/testcases/kernel/syscalls/sched_setparam/sched_setparam02.c
index 132cc9d6c..7ee6d393a 100644
--- a/testcases/kernel/syscalls/sched_setparam/sched_setparam02.c
+++ b/testcases/kernel/syscalls/sched_setparam/sched_setparam02.c
@@ -1,184 +1,81 @@ 
+// SPDX-License-Identifier: GPL-2.0-only
 /*
+ * Copyright (c) 2021, BELLSOFT. All rights reserved.
  * Copyright (c) Wipro Technologies Ltd, 2002.  All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ * AUTHOR: Saji Kumar.V.R <saji.kumar@wipro.com>
  */
-/**********************************************************
- *
- *    TEST IDENTIFIER	: sched_setparam02
- *
- *    EXECUTED BY	: root / superuser
- *
- *    TEST TITLE	: Checks functionality for sched_setparam(2)
- *
- *    TEST CASE TOTAL	: 1
- *
- *    AUTHOR		: Saji Kumar.V.R <saji.kumar@wipro.com>
- *
- *    SIGNALS
- * 	Uses SIGUSR1 to pause before test if option set.
- * 	(See the parse_opts(3) man page).
- *
- *    DESCRIPTION
- *	This test changes the scheduling priority for current process
- *	and verifies it by calling sched_getparam().
- *
- * 	Setup:
- * 	  Setup signal handling.
- *	  Pause for SIGUSR1 if option specified.
- *	  Change scheduling policy to SCHED_FIFO
- *
- * 	Test:
- *	 Loop if the proper options are given.
- * 	  Execute system call
- *	  If scheduling priority is set properly,
- *		TEST passed
- *	  else
- *		TEST failed
- *
- * 	Cleanup:
- * 	  Print errno log and/or timing stats if options given
+
+/*\
+ * [Description]
  *
- * USAGE:  <for command-line>
- *  sched_setparam02 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p]
- *			where,  -c n : Run n copies concurrently.
- *				-e   : Turn on errno logging.
- *				-h   : Show help screen
- *				-f   : Turn off functional testing
- *				-i n : Execute test n times.
- *				-I x : Execute test for x seconds.
- *				-p   : Pause for SIGUSR1 before starting
- *				-P x : Pause for x seconds between iterations.
- *				-t   : Turn on syscall timing.
+ * Checks functionality for sched_setparam(2)
  *
- ****************************************************************/
+ * This test changes the scheduling priority for current process
+ * and verifies it by calling sched_getparam().
+ */
 
-#include <errno.h>
-#include <sched.h>
-#include "test.h"
+#include "tst_test.h"
+#include "tst_sched.h"
 
 #define FIFO_OR_RR_PRIO 5
 #define OTHER_PRIO 0
 
-static void setup();
-static void cleanup();
-static int verify_priority(int);
-
-char *TCID = "sched_setparam02";
-
-static struct sched_param param;
-static struct sched_param param1 = { 1 };
+static struct sched_variants variants[] = {
+	{ .sched_setparam = libc_sched_setparam,
+	  .sched_getparam = libc_sched_getparam,
+	  .sched_setscheduler = libc_sched_setscheduler,
+	  .desc = "libc"
+	},
+	{ .sched_setparam = sys_sched_setparam,
+	  .sched_getparam = sys_sched_getparam,
+	  .sched_setscheduler = sys_sched_setscheduler,
+	  .desc = "syscall"
+	},
+};
 
 static struct test_cases_t {
 	char *desc;
 	int policy;
 	int priority;
-} testcases[] = {
+	int param;
+} tcases[] = {
 	{
-	"Test with policy SCHED_FIFO", SCHED_FIFO, FIFO_OR_RR_PRIO}, {
-	"Test with policy SCHED_RR", SCHED_RR, FIFO_OR_RR_PRIO}, {
-	"Test with SCHED_OTHER", SCHED_OTHER, OTHER_PRIO}
+	"Test with policy SCHED_FIFO", SCHED_FIFO, FIFO_OR_RR_PRIO, 1}, {
+	"Test with policy SCHED_RR", SCHED_RR, FIFO_OR_RR_PRIO, 1}, {
+	"Test with SCHED_OTHER", SCHED_OTHER, OTHER_PRIO, 0}
 };
 
-int TST_TOTAL = sizeof(testcases) / sizeof(testcases[0]);
-
-int main(int ac, char **av)
+static void run(unsigned int n)
 {
+	struct test_cases_t *tc = &tcases[n];
+	struct sched_variants *tv = &variants[tst_variant];
+	struct sched_param p = { .sched_priority = tc->param };
 
-	int lc, i;
-
-	tst_parse_opts(ac, av, NULL, NULL);
-
-	setup();
+	TST_EXP_PASS_SILENT(tv->sched_setscheduler(0, tc->policy, &p));
 
-	for (lc = 0; TEST_LOOPING(lc); lc++) {
+	p.sched_priority = tc->priority;
+	TST_EXP_PASS_SILENT(tv->sched_setparam(0, &p));
 
-		tst_count = 0;
+	p.sched_priority = -1;
+	TST_EXP_PASS_SILENT(tv->sched_getparam(0, &p));
 
-		for (i = 0; i < TST_TOTAL; ++i) {
-
-			if (i == 2) {
-				param1.sched_priority = 0;
-			} else {
-				param1.sched_priority = 1;
-			}
-			if ((sched_setscheduler(0, testcases[i].policy,
-						&param1)) == -1) {
-				tst_brkm(TBROK, cleanup, "sched_setscheduler()"
-					 "  failed");
-			}
-			param.sched_priority = testcases[i].priority;
-			/*
-			 * Call sched_setparam(2) with pid=0 sothat it will
-			 * set the scheduling parameters for the calling process
-			 */
-			TEST(sched_setparam(0, &param));
-
-			if ((TEST_RETURN == 0) && (verify_priority(i))) {
-				tst_resm(TPASS, "%s Passed", testcases[i].desc);
-			} else {
-				tst_resm(TFAIL | TTERRNO,
-					 "%s Failed. sched_setparam()"
-					 " returned %ld", testcases[i].desc,
-					 TEST_RETURN);
-			}
-		}
+	if (p.sched_priority == tc->priority) {
+		tst_res(TPASS, "got expected priority %d", p.sched_priority);
+	} else {
+		tst_res(TFAIL, "unexpected priority value %d, expected %d",
+			p.sched_priority, tc->priority);
 	}
-
-	/* cleanup and exit */
-	cleanup();
-
-	tst_exit();
-
 }
 
-/* setup() - performs all ONE TIME setup for this test */
-void setup(void)
+static void setup(void)
 {
-	tst_require_root();
-
-	tst_sig(NOFORK, DEF_HANDLER, cleanup);
-
-	TEST_PAUSE;
-
+	tst_res(TINFO, "Testing %s variant", variants[tst_variant].desc);
 }
 
-/*
- *cleanup() -  performs all ONE TIME cleanup for this test at
- *		completion or premature exit.
- */
-void cleanup(void)
-{
-}
-
-/*
- * verify_priority() -  This function checks whether the priority is
- *			set correctly
- */
-int verify_priority(int i)
-{
-	struct sched_param p;
-
-	if ((sched_getparam(0, &p)) == 0) {
-		if (p.sched_priority == testcases[i].priority) {
-			return 1;
-		} else {
-			tst_resm(TWARN, "sched_getparam() returned priority"
-				 " value as %d", p.sched_priority);
-			return 0;
-		}
-	}
-
-	tst_resm(TWARN, "sched_getparam() failed");
-	return 0;
-}
+static struct tst_test test = {
+	.needs_root = 1,
+	.setup = setup,
+	.test = run,
+	.test_variants = ARRAY_SIZE(variants),
+	.tcnt = ARRAY_SIZE(tcases),
+};