[LTP] [PATCH v2 2/6] syscalls/modify_ldt03: Refactor into new API

[rbm@suse.com]

From: Ricardo B. Marlière <rbm@suse.com>

Signed-off-by: Ricardo B. Marlière <rbm@suse.com>
---
 .../kernel/syscalls/modify_ldt/modify_ldt03.c      | 118 +++++----------------
 1 file changed, 24 insertions(+), 94 deletions(-)

diff --git a/testcases/kernel/syscalls/modify_ldt/modify_ldt03.c b/testcases/kernel/syscalls/modify_ldt/modify_ldt03.c
index 01730e0e14ae98a934e7b66c9058454506bbe064..addc7d0e0c2eaec4564b9a20be05e8f0638bd175 100644
--- a/testcases/kernel/syscalls/modify_ldt/modify_ldt03.c
+++ b/testcases/kernel/syscalls/modify_ldt/modify_ldt03.c
@@ -1,105 +1,35 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 /*
- * Copyright (c) 2014 Fujitsu Ltd.
- * Author: Zeng Linggang <zenglg.jy@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.
- */
-/*
- * DESCRIPTION
- *	Basic test for modify_ldt(2) using func=0 argument.
+ * Copyright (c) 2014 Fujitsu Ltd. Zeng Linggang <zenglg.jy@cn.fujitsu.com>
+ * Copyright (c) 2025 SUSE LLC Ricardo B. Marlière <rbm@suse.com>
  */
 
-#include "config.h"
-#include "test.h"
-
-char *TCID = "modify_ldt03";
-int TST_TOTAL = 1;
-
-#if defined(__i386__) && defined(HAVE_MODIFY_LDT)
-
-#ifdef HAVE_ASM_LDT_H
-# include <asm/ldt.h>
-#endif
-extern int modify_ldt(int, void *, unsigned long);
-
-#include <asm/unistd.h>
-#include <string.h>
-#include <sys/wait.h>
-#include <errno.h>
-#include "safe_macros.h"
-
-#ifdef HAVE_STRUCT_USER_DESC
-# define SIZE sizeof(struct user_desc)
-#else
-# define SIZE 16
-#endif
-
-static char buf[SIZE];
-static void cleanup(void);
-static void setup(void);
-
-int main(int ac, char **av)
-{
-	int lc;
-
-	tst_parse_opts(ac, av, NULL, NULL);
-
-	setup();
-
-	for (lc = 0; TEST_LOOPING(lc); lc++) {
-
-		tst_count = 0;
-
-		TEST(modify_ldt(0, buf, SIZE));
-
-		if (TEST_RETURN < 0) {
-			tst_resm(TFAIL | TTERRNO,
-				 "modify_ldt() failed with errno: %s",
-				 strerror(TEST_ERRNO));
-		} else {
-			tst_resm(TPASS, "modify_ldt() tested success");
-		}
-	}
+/*\
+ * Verify that a simple read (func=0) works when calling modify_ldt.
+ */
 
-	cleanup();
-	tst_exit();
-}
+#include "tst_test.h"
 
-static void setup(void)
-{
-	tst_sig(NOFORK, DEF_HANDLER, cleanup);
+#ifdef __i386__
+#include "lapi/ldt.h"
 
-	TEST_PAUSE;
-}
+static char *buf;
 
-static void cleanup(void)
+void run(void)
 {
+	TST_EXP_POSITIVE(modify_ldt(0, buf, sizeof(buf)));
 }
 
-#elif HAVE_MODIFY_LDT
+static struct tst_test test = {
+	.test_all = run,
+	.bufs =
+		(struct tst_buffers[]){
+			{ &buf, .size = sizeof(struct user_desc) },
+			{},
+		},
+};
 
-int main(void)
-{
-	tst_brkm(TCONF,
-		 NULL, "modify_ldt is available but not tested on the platform than "
-		 "__i386__");
-}
-
-#else /* if defined(__i386__) */
-
-int main(void)
-{
-	tst_resm(TINFO, "modify_ldt03 test only for ix86");
-	tst_exit();
-}
-
-#endif /* if defined(__i386__) */
+#else
+TST_TEST_TCONF("Test supported only on i386");
+#endif /* __i386__ */

-- 
2.49.0