[LTP] [PATCH] fcntl30.c: Convert the test to new LTP API

[Avinesh Kumar]

Signed-off-by: Avinesh Kumar <akumar@suse.de>
---
 testcases/kernel/syscalls/fcntl/fcntl30.c | 112 +++++++---------------
 1 file changed, 36 insertions(+), 76 deletions(-)

diff --git a/testcases/kernel/syscalls/fcntl/fcntl30.c b/testcases/kernel/syscalls/fcntl/fcntl30.c
index c4c3f81f1..62cc39e73 100644
--- a/testcases/kernel/syscalls/fcntl/fcntl30.c
+++ b/testcases/kernel/syscalls/fcntl/fcntl30.c
@@ -1,103 +1,63 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (c) 2014 Fujitsu Ltd.
  * Author: Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com>
- *
- * 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.
+ * Copyright (c) 2023 SUSE LLC Avinesh Kumar <avinesh.kumar@suse.com>
  */
 
-/*
- * Description:
- * Verify that,
- *     Basic test for fcntl(2) using F_SETPIPE_SZ, F_GETPIPE_SZ argument.
+/*\
+ * [Description]
+ *
+ * Verify that, fetching and changing the capacity of a pipe works as
+ * expected with fcntl(2) syscall using F_GETPIPE_SZ, F_SETPIPE_SZ arguments.
  */
 
 
-#include <stdio.h>
-#include <errno.h>
-#include <unistd.h>
-#include <string.h>
-#include <signal.h>
-#include <sys/types.h>
-#include <pwd.h>
-
-#include "test.h"
-#include "safe_macros.h"
+#include "tst_test.h"
 #include "lapi/fcntl.h"
 
-char *TCID = "fcntl30";
-int TST_TOTAL = 1;
+static int fds[2];
+static int max_size_unpriv;
 
-static void setup(void);
-static void cleanup(void);
-
-int main(int ac, char **av)
+static void run(void)
 {
-	int lc;
-	int pipe_fds[2], test_fd;
-	int orig_pipe_size, new_pipe_size;
-
-
-	tst_parse_opts(ac, av, NULL, NULL);
+	int orig_size, new_size;
 
-	setup();
+	SAFE_PIPE(fds);
 
-	for (lc = 0; TEST_LOOPING(lc); lc++) {
-		tst_count = 0;
+	TST_EXP_POSITIVE(fcntl(fds[1], F_GETPIPE_SZ));
 
-		SAFE_PIPE(cleanup, pipe_fds);
-		test_fd = pipe_fds[1];
+	orig_size = TST_RET;
+	new_size = orig_size * 2;
 
-		TEST(fcntl(test_fd, F_GETPIPE_SZ));
-		if (TEST_RETURN < 0) {
-			tst_brkm(TFAIL | TTERRNO, cleanup,
-				 "fcntl get pipe size failed");
-		}
+	if (new_size > max_size_unpriv)
+		tst_brk(TBROK, "Requested pipe size above the allowed limit %d", max_size_unpriv);
 
-		orig_pipe_size = TEST_RETURN;
-		new_pipe_size = orig_pipe_size * 2;
-		TEST(fcntl(test_fd, F_SETPIPE_SZ, new_pipe_size));
-		if (TEST_RETURN < 0) {
-			tst_brkm(TFAIL | TTERRNO, cleanup,
-				 "fcntl test F_SETPIPE_SZ failed");
-		}
+	TST_EXP_POSITIVE(fcntl(fds[1], F_SETPIPE_SZ, new_size));
+	TST_EXP_POSITIVE(fcntl(fds[1], F_GETPIPE_SZ));
+	TST_EXP_EXPR(TST_RET >= new_size,
+				"new pipe size (%ld) >= requested size (%d)",
+				TST_RET, new_size);
 
-		TEST(fcntl(test_fd, F_GETPIPE_SZ));
-		if (TEST_RETURN < 0) {
-			tst_brkm(TFAIL | TTERRNO, cleanup,
-				 "fcntl test F_GETPIPE_SZ failed");
-		}
-		tst_resm(TINFO, "orig_pipe_size: %d new_pipe_size: %d",
-			 orig_pipe_size, new_pipe_size);
-		if (TEST_RETURN >= new_pipe_size) {
-			tst_resm(TPASS, "fcntl test F_GETPIPE_SZ and F_SETPIPE_SZ passed");
-		} else {
-			tst_resm(TFAIL, "fcntl test F_GETPIPE_SZ and F_SETPIPE_SZ failed");
-		}
-		SAFE_CLOSE(cleanup, pipe_fds[0]);
-		SAFE_CLOSE(cleanup, pipe_fds[1]);
-	}
-
-	cleanup();
-	tst_exit();
+	SAFE_CLOSE(fds[0]);
+	SAFE_CLOSE(fds[1]);
 }
 
 static void setup(void)
 {
-	tst_sig(NOFORK, DEF_HANDLER, cleanup);
-
-	TEST_PAUSE;
+	SAFE_FILE_SCANF("/proc/sys/fs/pipe-max-size", "%d",	&max_size_unpriv);
 }
 
 static void cleanup(void)
 {
+	if (fds[0] > 0)
+		SAFE_CLOSE(fds[0]);
+	if (fds[1] > 0)
+		SAFE_CLOSE(fds[1]);
 }
+
+static struct tst_test test = {
+	.test_all = run,
+	.setup = setup,
+	.cleanup = cleanup
+};
-- 
2.40.1