[LTP] [PATCH v4 3/4] Add chmod08 test

[Andrea Cervesato <andrea.cervesato@suse.de>]

From: Andrea Cervesato <andrea.cervesato@suse.com>

This test has been extracted from symlink01 and it verifies that
chmod() is working correctly on symlink() generated files.

Reviewed-by: Li Wang <liwang@redhat.com>
Reviewed-by: Petr Vorel <pvorel@suse.cz>
Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
 runtest/syscalls                           |  1 +
 testcases/kernel/syscalls/chmod/.gitignore |  1 +
 testcases/kernel/syscalls/chmod/chmod08.c  | 45 ++++++++++++++++++++++++++++++
 3 files changed, 47 insertions(+)

diff --git a/runtest/syscalls b/runtest/syscalls
index 160725893..40c0dd070 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -72,6 +72,7 @@ chmod03 chmod03
 chmod05 chmod05
 chmod06 chmod06
 chmod07 chmod07
+chmod08 chmod08
 
 chown01 chown01
 chown01_16 chown01_16
diff --git a/testcases/kernel/syscalls/chmod/.gitignore b/testcases/kernel/syscalls/chmod/.gitignore
index 27ddfce16..f295f4dcb 100644
--- a/testcases/kernel/syscalls/chmod/.gitignore
+++ b/testcases/kernel/syscalls/chmod/.gitignore
@@ -3,3 +3,4 @@
 /chmod05
 /chmod06
 /chmod07
+/chmod08
diff --git a/testcases/kernel/syscalls/chmod/chmod08.c b/testcases/kernel/syscalls/chmod/chmod08.c
new file mode 100644
index 000000000..87519dbe8
--- /dev/null
+++ b/testcases/kernel/syscalls/chmod/chmod08.c
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2000 Silicon Graphics, Inc.  All Rights Reserved.
+ *    Author: David Fenner
+ *    Copilot: Jon Hendrickson
+ * Copyright (C) 2024 Andrea Cervesato andrea.cervesato@suse.com
+ */
+
+/*\
+ * [Description]
+ *
+ * This test verifies that chmod() is working correctly on symlink()
+ * generated files.
+ */
+
+#include "tst_test.h"
+
+#define PERMS 01777
+#define TESTFILE "myobject"
+#define	SYMBNAME "my_symlink0"
+
+static void run(void)
+{
+	struct stat oldsym_stat;
+	struct stat newsym_stat;
+
+	SAFE_TOUCH(TESTFILE, 0644, NULL);
+	SAFE_SYMLINK(TESTFILE, SYMBNAME);
+	SAFE_STAT(SYMBNAME, &oldsym_stat);
+
+	TST_EXP_PASS(chmod(SYMBNAME, PERMS));
+	SAFE_STAT(SYMBNAME, &newsym_stat);
+
+	TST_EXP_EQ_LI(newsym_stat.st_mode & PERMS, PERMS);
+	TST_EXP_EXPR(oldsym_stat.st_mode != newsym_stat.st_mode,
+		"file mode has changed");
+
+	SAFE_UNLINK(SYMBNAME);
+	SAFE_UNLINK(TESTFILE);
+}
+
+static struct tst_test test = {
+	.test_all = run,
+	.needs_tmpdir = 1,
+};

-- 
2.43.0


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