[LTP] [PATCH v2 1/2] syscalls/getpid01: Convert to new API

[Shiyang Ruan]

Signed-off-by: Shiyang Ruan <ruansy.fnst@cn.fujitsu.com>
---
 testcases/kernel/syscalls/getpid/getpid01.c | 180 ++++----------------
 1 file changed, 33 insertions(+), 147 deletions(-)

diff --git a/testcases/kernel/syscalls/getpid/getpid01.c b/testcases/kernel/syscalls/getpid/getpid01.c
index b9b069c63..c104196cd 100644
--- a/testcases/kernel/syscalls/getpid/getpid01.c
+++ b/testcases/kernel/syscalls/getpid/getpid01.c
@@ -1,158 +1,44 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Copyright (c) 2000 Silicon Graphics, Inc.  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.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like.  Any license provided herein, whether implied or
- * otherwise, applies only to this software file.  Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * 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.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA  94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/NoticeExplan/
- *
  */
-/* $Id: getpid01.c,v 1.8 2009/10/26 14:55:47 subrata_modak Exp $ */
-/**********************************************************
- *
- *    OS Test - Silicon Graphics, Inc.
- *
- *    TEST IDENTIFIER	: getpid01
- *
- *    EXECUTED BY	: anyone
- *
- *    TEST TITLE	: Basic test for getpid(2)
- *
- *    PARENT DOCUMENT	: usctpl01
- *
- *    TEST CASE TOTAL	: 1
- *
- *    WALL CLOCK TIME	: 1
- *
- *    CPU TYPES		: ALL
- *
- *    AUTHOR		: William Roske
- *
- *    CO-PILOT		: Dave Fenner
- *
- *    DATE STARTED	: 03/30/92
- *
- *    INITIAL RELEASE	: UNICOS 7.0
- *
- *    TEST CASES
- *
- * 	1.) getpid(2) returns...(See Description)
- *
- *    INPUT SPECIFICATIONS
- * 	The standard options for system call tests are accepted.
- *	(See the parse_opts(3) man page).
- *
- *    OUTPUT SPECIFICATIONS
- *$
- *    DURATION
- * 	Terminates - with frequency and infinite modes.
- *
- *    SIGNALS
- * 	Uses SIGUSR1 to pause before test if option set.
- * 	(See the parse_opts(3) man page).
- *
- *    RESOURCES
- * 	None
- *
- *    ENVIRONMENTAL NEEDS
- *      No run-time environmental needs.
- *
- *    SPECIAL PROCEDURAL REQUIREMENTS
- * 	None
- *
- *    INTERCASE DEPENDENCIES
- * 	None
- *
- *    DETAILED DESCRIPTION
- *	This is a Phase I test for the getpid(2) system call.  It is intended
- *	to provide a limited exposure of the system call, for now.  It
- *	should/will be extended when full functional tests are written for
- *	getpid(2).
- *
- * 	Setup:
- * 	  Setup signal handling.
- *	  Pause for SIGUSR1 if option specified.
- *
- * 	Test:
- *	 Loop if the proper options are given.
- * 	  Execute system call
- *	  Check return code, if system call failed (return=-1)
- *		Log the errno and Issue a FAIL message.
- *	  Otherwise, Issue a PASS message.
- *
- * 	Cleanup:
- * 	  Print errno log and/or timing stats if options given
- *
+
+/*\
+ * [DESCRIPTION]
  *
- *#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#*#**/
+ * Verify that getpid() system call gets the process ID won't out of range.
+\*/
 
 #include <errno.h>
-#include <signal.h>
-#include <string.h>
-#include "test.h"
-
-void setup();
-void cleanup();
+#include "tst_test.h"
 
-char *TCID = "getpid01";
-int TST_TOTAL = 1;
-
-int main(int ac, char **av)
+static void verify_getpid(void)
 {
-	int lc;
-
-	tst_parse_opts(ac, av, NULL, NULL);
-
-	setup();
-
-	for (lc = 0; TEST_LOOPING(lc); lc++) {
-
-		tst_count = 0;
-
-		TEST(getpid());
-
-		if (TEST_RETURN == -1)
-			tst_resm(TFAIL | TTERRNO, "getpid failed");
-		else
-			tst_resm(TPASS, "getpid returned %ld", TEST_RETURN);
-
+	pid_t pid_max, pid;
+	int status;
+
+	/* get pid_max of this system */
+	SAFE_FILE_SCANF("/proc/sys/kernel/pid_max", "%d\n", &pid_max);
+
+	for (int i = 0; i < 100; i++) {
+		pid = SAFE_FORK();
+		if (pid == 0) {
+			pid = getpid();
+
+			/* pid should not be 1 or out of maximum */
+			if (1 < pid && pid <= pid_max)
+				tst_res(TPASS, "getpid() returns %d", pid);
+			else
+				tst_res(TFAIL | TTERRNO,
+					"getpid() returns out of range: %d", pid);
+		} else {
+			SAFE_WAIT(&status);
+			break;
+		}
 	}
-
-	cleanup();
-	tst_exit();
 }
 
-void setup(void)
-{
-
-	tst_sig(NOFORK, DEF_HANDLER, cleanup);
-
-	TEST_PAUSE;
-}
-
-void cleanup(void)
-{
-}
+static struct tst_test test = {
+	.forks_child = 1,
+	.test_all = verify_getpid,
+};
-- 
2.30.1