[LTP] [PATCH v1 1/2] Rewrite gettid01 test

[Andrea Cervesato]

From: Andrea Cervesato <andrea.cervesato@suse.com>

The old test wasn't doing anything meaningful, but just checking
gettid() syscall was working. In this test we checks if gettid() is
working and if PID differs from its return value.

Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
 testcases/kernel/syscalls/gettid/gettid01.c | 102 +++-----------------
 1 file changed, 14 insertions(+), 88 deletions(-)

diff --git a/testcases/kernel/syscalls/gettid/gettid01.c b/testcases/kernel/syscalls/gettid/gettid01.c
index 7e5b6b175..3ee139d5f 100644
--- a/testcases/kernel/syscalls/gettid/gettid01.c
+++ b/testcases/kernel/syscalls/gettid/gettid01.c
@@ -1,96 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
- * Crackerjack Project
- *
- * Copyright (C) 2007-2008, Hitachi, Ltd.
- * Author(s): Takahiro Yasui <takahiro.yasui.mp@hitachi.com>,
- *            Yumiko Sugita <yumiko.sugita.yf@hitachi.com>,
- *            Satoshi Fujiwara <sa-fuji@sdl.hitachi.co.jp>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
- *
- * $Id: gettid01.c,v 1.5 2009/10/26 14:55:47 subrata_modak Exp $
+ * Copyright (C) 2023 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
+ */
+/*\
+ * [Description]
  *
+ * This test checks if parent pid is equal to tid in single-threaded
+ * application.
  */
 
-/* Porting from Crackerjack to LTP is done
-   by Masatake YAMATO <yamato@redhat.com> */
-
-#include <sys/types.h>
-#include <linux/unistd.h>
-#include <errno.h>
-
-#include "test.h"
-
-void setup();
-void cleanup();
+#include "tst_test.h"
+#include "lapi/syscalls.h"
 
-char *TCID = "gettid01";
-
-int TST_TOTAL = 1;
-
-pid_t my_gettid(void)
+static void run(void)
 {
-	return (pid_t) syscall(__NR_gettid);
+	TST_EXP_EQ_LI(getpid(), tst_syscall(__NR_gettid));
 }
 
-int main(int ac, char **av)
-{
-	int lc;
-
-	tst_parse_opts(ac, av, NULL, NULL);
-
-	setup();
-
-	/*
-	 * The following loop checks looping state if -c option given
-	 */
-	for (lc = 0; TEST_LOOPING(lc); lc++) {
-
-		tst_count = 0;
-
-		TEST(my_gettid());
-
-		if (TEST_RETURN == -1) {
-			tst_resm(TFAIL, "gettid() Failed, errno=%d: %s",
-				 TEST_ERRNO, strerror(TEST_ERRNO));
-		} else {
-			tst_resm(TPASS, "gettid() returned %ld",
-				 TEST_RETURN);
-		}
-	}
-
-	cleanup();
-	tst_exit();
-}
-
-/*
- * setup() - performs all ONE TIME setup for this test.
- */
-void setup(void)
-{
-
-	tst_sig(NOFORK, DEF_HANDLER, cleanup);
-
-	TEST_PAUSE;
-
-}
-
-/*
- * cleanup() - performs all ONE TIME cleanup for this test at
- *		completion or premature exit.
- */
-void cleanup(void)
-{
-}
+static struct tst_test test = {
+	.test_all = run,
+};
-- 
2.35.3