[4/4] link/link07: Convert to new API

diff --git a/testcases/kernel/syscalls/link/link07.c b/testcases/kernel/syscalls/link/link07.c
index 09743b59c..e166fe6e8 100644
--- a/testcases/kernel/syscalls/link/link07.c
+++ b/testcases/kernel/syscalls/link/link07.c
@@ -1,42 +1,20 @@ 
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Copyright (C) Bull S.A. 2001
  * Copyright (c) International Business Machines  Corp., 2001
  *  06/2002 Ported by Jacky Malcles
  * Copyright (c) 2014 Cyril Hrubis <chrubis@suse.cz>
- *
- * 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]
+ *
  * Verify that, link() fails with -1 and sets errno to EACCES when one of the
  * directories in oldpath or newpath did not allow search (execute) permission.
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <string.h>
-#include <signal.h>
-#include <sys/types.h>
-#include <sys/stat.h>
 #include <pwd.h>
-
-#include "test.h"
-#include "safe_macros.h"
+#include "tst_test.h"
 
 #define MODE_TO S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IXOTH|S_IROTH|S_IWOTH
 #define MODE_TE S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH
@@ -45,74 +23,32 @@ 
 #define TEST_FILE2      "testdir_1/tfile_2"
 #define NEW_TEST_FILE2  "testdir_1/new_tfile_2"
 
-static void setup(void);
-static void cleanup(void);
-
-char *TCID = "link07";
-int TST_TOTAL = 1;
-
-int main(int ac, char **av)
+static void verify_link(void)
 {
-	int lc;
-
-	tst_parse_opts(ac, av, NULL, NULL);
-
-	setup();
-
-	for (lc = 0; TEST_LOOPING(lc); lc++) {
-		tst_count = 0;
-
-		TEST(link(TEST_FILE2, NEW_TEST_FILE2));
-
-		/* Check return code from link(2) */
-		if (TEST_RETURN != -1) {
-			tst_resm(TFAIL | TTERRNO, "link() returned %ld, "
-				 "expected -1, errno=%d", TEST_RETURN, EACCES);
-		} else {
-			if (TEST_ERRNO == EACCES) {
-				tst_resm(TPASS | TTERRNO,
-				         "link() fails with expected error");
-			} else {
-				tst_resm(TFAIL | TTERRNO, "link() failed"
-				         ", expected errno=%d (EACCES)",
-				         EACCES);
-			}
-		}
-	}
-
-	cleanup();
-	tst_exit();
+	TST_EXP_FAIL(link(TEST_FILE2, NEW_TEST_FILE2), EACCES,
+			"link(%s, %s)", TEST_FILE2, NEW_TEST_FILE2);
 }
 
 static void setup(void)
 {
 	struct passwd *nobody_pwd;
 
-	tst_sig(NOFORK, DEF_HANDLER, cleanup);
-
-	tst_require_root();
-
-	TEST_PAUSE;
-
-	tst_tmpdir();
-
 	/* Modify mode permissions on test directory */
-	SAFE_CHMOD(cleanup, ".", MODE_TO);
+	SAFE_CHMOD(".", MODE_TO);
 
-	SAFE_MKDIR(cleanup, DIR_TEMP, MODE_RWX);
-	SAFE_TOUCH(cleanup, TEST_FILE2, 0666, NULL);
+	SAFE_MKDIR(DIR_TEMP, MODE_RWX);
+	SAFE_TOUCH(TEST_FILE2, 0666, NULL);
 
 	/* Modify mode permissions on test directory - test conditions */
-	SAFE_CHMOD(cleanup, DIR_TEMP, MODE_TE);
+	SAFE_CHMOD(DIR_TEMP, MODE_TE);
 
-	nobody_pwd = SAFE_GETPWNAM(cleanup, "nobody");
-	SAFE_SETEUID(cleanup, nobody_pwd->pw_uid);
+	nobody_pwd = SAFE_GETPWNAM("nobody");
+	SAFE_SETEUID(nobody_pwd->pw_uid);
 }
 
-static void cleanup(void)
-{
-	if (seteuid(0))
-		tst_resm(TWARN | TERRNO, "seteuid(o) failed");
-
-	tst_rmdir();
-}
+static struct tst_test test = {
+	.test_all = verify_link,
+	.setup = setup,
+	.needs_tmpdir = 1,
+	.needs_root = 1,
+};