[LTP] [PATCH v5] Add stat04 test

[Andrea Cervesato]

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

This test has been extracted from symlink01 test and it checks that
stat() executed on file provide the same information of symlink linking
to it.

Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
Change Author description adding copilot
Fetch tmpdir in setup() and free it in cleanup()

 runtest/smoketest                         |  2 +-
 runtest/syscalls                          |  4 +-
 testcases/kernel/syscalls/stat/.gitignore |  2 +
 testcases/kernel/syscalls/stat/stat04.c   | 60 +++++++++++++++++++++++
 4 files changed, 65 insertions(+), 3 deletions(-)
 create mode 100644 testcases/kernel/syscalls/stat/stat04.c

diff --git a/runtest/smoketest b/runtest/smoketest
index 83eebfe7b..5608417f9 100644
--- a/runtest/smoketest
+++ b/runtest/smoketest
@@ -8,7 +8,7 @@ time01 time01
 wait02 wait02
 write01 write01
 symlink01 symlink01
-stat04 symlink01 -T stat04
+stat04 stat04
 utime01A symlink01 -T utime01
 rename01A symlink01 -T rename01
 splice02 splice02 -s 20
diff --git a/runtest/syscalls b/runtest/syscalls
index 010a1a752..b18e14d7c 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -1529,8 +1529,8 @@ stat02 stat02
 stat02_64 stat02_64
 stat03 stat03
 stat03_64 stat03_64
-stat04 symlink01 -T stat04
-stat04_64 symlink01 -T stat04_64
+stat04 stat04
+stat04_64 stat04_64
 
 statfs01 statfs01
 statfs01_64 statfs01_64
diff --git a/testcases/kernel/syscalls/stat/.gitignore b/testcases/kernel/syscalls/stat/.gitignore
index fa0a4ce9f..0a62dc6ee 100644
--- a/testcases/kernel/syscalls/stat/.gitignore
+++ b/testcases/kernel/syscalls/stat/.gitignore
@@ -4,3 +4,5 @@
 /stat02_64
 /stat03
 /stat03_64
+/stat04
+/stat04_64
diff --git a/testcases/kernel/syscalls/stat/stat04.c b/testcases/kernel/syscalls/stat/stat04.c
new file mode 100644
index 000000000..edb94656d
--- /dev/null
+++ b/testcases/kernel/syscalls/stat/stat04.c
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2000 Silicon Graphics, Inc.  All Rights Reserved.
+ *    Author: David Fenner, Jon Hendrickson
+ * Copyright (C) 2024 Andrea Cervesato <andrea.cervesato@suse.com>
+ */
+
+/*\
+ * [Description]
+ *
+ * This test checks that stat() executed on file provide the same information
+ * of symlink linking to it.
+ */
+
+#include <stdlib.h>
+#include "tst_test.h"
+
+static char *tmpdir;
+
+static void run(void)
+{
+	char *symname = "my_symlink0";
+
+	SAFE_SYMLINK(tmpdir, symname);
+
+	struct stat path;
+	struct stat link;
+
+	TST_EXP_PASS(stat(tmpdir, &path));
+	TST_EXP_PASS(stat(symname, &link));
+
+	TST_EXP_EQ_LI(path.st_dev, link.st_dev);
+	TST_EXP_EQ_LI(path.st_mode, link.st_mode);
+	TST_EXP_EQ_LI(path.st_nlink, link.st_nlink);
+	TST_EXP_EQ_LI(path.st_uid, link.st_uid);
+	TST_EXP_EQ_LI(path.st_gid, link.st_gid);
+	TST_EXP_EQ_LI(path.st_size, link.st_size);
+	TST_EXP_EQ_LI(path.st_atime, link.st_atime);
+	TST_EXP_EQ_LI(path.st_mtime, link.st_mtime);
+	TST_EXP_EQ_LI(path.st_ctime, link.st_ctime);
+
+	SAFE_UNLINK(symname);
+}
+
+static void setup(void)
+{
+	tmpdir = tst_get_tmpdir();
+}
+
+static void cleanup(void)
+{
+	free(tmpdir);
+}
+
+static struct tst_test test = {
+	.test_all = run,
+	.setup = setup,
+	.cleanup = cleanup,
+	.needs_tmpdir = 1,
+};
-- 
2.35.3