[LTP] [PATCH v1] Refactor fork11 test using new LTP API

[Andrea Cervesato]

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

Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
 testcases/kernel/syscalls/fork/fork11.c | 106 +++++-------------------
 1 file changed, 23 insertions(+), 83 deletions(-)

diff --git a/testcases/kernel/syscalls/fork/fork11.c b/testcases/kernel/syscalls/fork/fork11.c
index 6afda3a33..de5840646 100644
--- a/testcases/kernel/syscalls/fork/fork11.c
+++ b/testcases/kernel/syscalls/fork/fork11.c
@@ -1,97 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
- *   Copyright (c) International Business Machines  Corp., 2001
- *
- *   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
- *
- *
- * NAME
- *	fork11.c
- *
- * DESCRIPTION
- *	Test that parent gets a pid from each child when doing wait
- *
- * ALGORITHM
- *	Fork NUMFORKS children that do nothing.
- *
- * USAGE
- *	fork11
- *
- * HISTORY
- *	07/2001 Ported by Wayne Boyer
+ * Copyright (c) International Business Machines  Corp., 2001
+ *     07/2001 Ported by Wayne Boyer
+ * Copyright (C) 2023 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
+ */
+/*\
+ *[Description]
  *
- * RESTRICTIONS
- *	None
+ * This test spawns multiple processes using fork() and it checks if wait()
+ * returns the right PID once they end up.
  */
 
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <stdio.h>
-#include <errno.h>
-#include "test.h"
-
-char *TCID = "fork11";
-int TST_TOTAL = 1;
-
-static void setup(void);
-static void cleanup(void);
+#include "tst_test.h"
 
 #define NUMFORKS 100
 
-int main(int ac, char **av)
+static void run(void)
 {
-	int i, pid, cpid, status;
-	int fail = 0;
-	int lc;
-
-	tst_parse_opts(ac, av, NULL, NULL);
+	pid_t pid;
+	int status;
 
-	setup();
+	for (int i = 0; i < NUMFORKS; i++) {
+		tst_res(TINFO, "Forking the %d process", i);
 
-	for (lc = 0; TEST_LOOPING(lc); lc++) {
-		tst_count = 0;
+		pid = SAFE_FORK();
+		if (!pid)
+			return;
 
-		for (i = 0; i < NUMFORKS; i++) {
-			pid = fork();
-			if (pid == 0)
-				exit(0);
-
-			if (pid > 0) {	/* parent */
-				cpid = wait(&status);
-				if (cpid != pid)
-					fail++;
-			} else {
-				fail++;
-				break;
-			}
-		}
-		if (fail)
-			tst_resm(TFAIL, "fork failed %d times", fail);
-		else
-			tst_resm(TPASS, "fork test passed, %d processes", i);
+		TST_EXP_EQ_LI(SAFE_WAIT(&status), pid);
 	}
-
-	cleanup();
-	tst_exit();
 }
 
-static void setup(void)
-{
-	tst_sig(FORK, DEF_HANDLER, cleanup);
-	TEST_PAUSE;
-}
-
-static void cleanup(void)
-{
-}
+static struct tst_test test = {
+	.test_all = run,
+	.forks_child = 1,
+};
-- 
2.35.3