[v1] Rewrite waitid01.c test using new LTP API

diff --git a/testcases/kernel/syscalls/waitid/waitid01.c b/testcases/kernel/syscalls/waitid/waitid01.c
index b6579d91d..60ecf9022 100644
--- a/testcases/kernel/syscalls/waitid/waitid01.c
+++ b/testcases/kernel/syscalls/waitid/waitid01.c
@@ -1,126 +1,43 @@ 
-/******************************************************************************/
-/* Copyright (c) Crackerjack Project., 2007                                   */
-/*                                                                            */
-/* 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           */
-/*                                                                            */
-/******************************************************************************/
-/******************************************************************************/
-/*                                                                            */
-/* Description: This tests the waitid() syscall                               */
-/*                                                                            */
-/* Test Name:   waitid01                                                      */
-/* History:     Porting from Crackerjack to LTP is done by                    */
-/*              Manas Kumar Nayak maknayak@in.ibm.com>                        */
-/******************************************************************************/
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) Crackerjack Project., 2007
+ * Copyright (C) 2022 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
+ */
+
+/*\
+ * [Description]
+ *
+ * This test is checking if waitid() syscall does wait for WEXITED and check for
+ * the return value.
+ */
 
-#include <stdio.h>
-#include <errno.h>
 #include <stdlib.h>
 #include <sys/wait.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <sys/stat.h>
+#include "tst_test.h"
 
-#include "test.h"
+static siginfo_t *infop;
 
-char *TCID = "waitid01";
-int testno;
-int TST_TOTAL = 3;
-
-void setup(void)
-{
-	TEST_PAUSE;
-}
-
-void display_status(siginfo_t * infop)
+static void run(void)
 {
-	tst_resm(TINFO, "Process %d terminated:", infop->si_pid);
-	tst_resm(TINFO, "code = %d", infop->si_code);
-	if (infop->si_code == CLD_EXITED)
-		tst_resm(TINFO, "exit value = %d", infop->si_status);
-	else
-		tst_resm(TINFO, "signal = %d", infop->si_status);
-}
-
-int main(int ac, char **av)
-{
-	id_t pid;
-	siginfo_t infop;
-	int lc;
-
-	tst_parse_opts(ac, av, NULL, NULL);
+	pid_t pidchild;
 
-	setup();
+	pidchild = SAFE_FORK();
+	if (!pidchild)
+		exit(123);
 
-	for (lc = 0; TEST_LOOPING(lc); ++lc) {
-		tst_count = 0;
-		for (testno = 0; testno < TST_TOTAL; ++testno) {
-
-			TEST(fork());
-			if (TEST_RETURN < 0)
-				tst_brkm(TBROK | TTERRNO, NULL,
-					"fork() failed");
-
-			if (TEST_RETURN == 0) {
-				exit(123);
-			} else {
-				TEST(waitid(P_ALL, getpid(), &infop, WEXITED));
-				if (TEST_RETURN == -1) {
-					tst_brkm(TFAIL | TTERRNO,
-						 NULL,
-						 "waitid(getpid()) failed");
-				} else
-					display_status(&infop);	//CLD_EXITED = 1
-			}
-
-			TEST(fork());
-			if (TEST_RETURN < 0)
-				tst_brkm(TBROK | TTERRNO, NULL,
-					"fork() failed");
-
-			if (TEST_RETURN == 0) {
-				int a, b = 0;
-				a = 1 / b;
-				tst_exit();
-			} else {
-				TEST(waitid(P_ALL, 0, &infop, WEXITED));
-				if (TEST_RETURN == -1) {
-					tst_brkm(TFAIL | TTERRNO,
-						 NULL, "waitid(0) failed");
-				} else
-					display_status(&infop);	//CLD_DUMPED = 3 ; SIGFPE = 8
-			}
-
-			TEST(pid = fork());
-			if (TEST_RETURN < 0)
-				tst_brkm(TBROK | TTERRNO, NULL,
-					"fork() failed");
-
-			if (TEST_RETURN == 0) {
-				TEST(sleep(10));
-				tst_exit();
-			}
-			TEST(kill(pid, SIGHUP));
-			TEST(waitid(P_ALL, 0, &infop, WEXITED));
-			if (TEST_RETURN == -1) {
-				tst_brkm(TFAIL | TTERRNO, NULL,
-					 "waitid(0) failed");
-			} else
-				display_status(&infop);	//CLD_KILLED = 2 ; SIGHUP = 1
-		}
-	}
-	tst_resm(TPASS, "waitid(): system call passed");
-	tst_exit();
+	TST_EXP_PASS(waitid(P_ALL, getpid(), infop, WEXITED));
+	TST_EXP_EQ_LI(infop->si_pid, pidchild);
+	TST_EXP_EQ_LI(infop->si_status, 123);
+	TST_EXP_EQ_LI(infop->si_signo, SIGCHLD);
+	TST_EXP_EQ_LI(infop->si_code, CLD_EXITED);
 }
+
+static struct tst_test test = {
+	.test_all = run,
+	.forks_child = 1,
+	.bufs =
+		(struct tst_buffers[]){
+			{ &infop, .size = sizeof(*infop) },
+			{},
+		},
+};