[LTP] [PATCH v2 10/10] Add statmount06 test

[Andrea Cervesato]

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

This test verifies that statmount() is correctly reading name of the
filesystem type using STATMOUNT_FS_TYPE.

Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
 runtest/syscalls                              |  1 +
 .../kernel/syscalls/statmount/.gitignore      |  1 +
 .../kernel/syscalls/statmount/statmount06.c   | 73 +++++++++++++++++++
 3 files changed, 75 insertions(+)
 create mode 100644 testcases/kernel/syscalls/statmount/statmount06.c

diff --git a/runtest/syscalls b/runtest/syscalls
index 2984117e6..86e253f77 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -1542,6 +1542,7 @@ statmount02 statmount02
 statmount03 statmount03
 statmount04 statmount04
 statmount05 statmount05
+statmount06 statmount06
 
 statfs01 statfs01
 statfs01_64 statfs01_64
diff --git a/testcases/kernel/syscalls/statmount/.gitignore b/testcases/kernel/syscalls/statmount/.gitignore
index f64763242..03a75bd40 100644
--- a/testcases/kernel/syscalls/statmount/.gitignore
+++ b/testcases/kernel/syscalls/statmount/.gitignore
@@ -3,3 +3,4 @@ statmount02
 statmount03
 statmount04
 statmount05
+statmount06
diff --git a/testcases/kernel/syscalls/statmount/statmount06.c b/testcases/kernel/syscalls/statmount/statmount06.c
new file mode 100644
index 000000000..5c9be9be9
--- /dev/null
+++ b/testcases/kernel/syscalls/statmount/statmount06.c
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2024 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
+ */
+
+/**
+ * [Description]
+ *
+ * This test verifies that statmount() is correctly reading name of the
+ * filesystem type using STATMOUNT_FS_TYPE.
+ *
+ * [Algorithm]
+ *
+ * * create a mount point
+ * * run statmount() on the mount point using STATMOUNT_FS_TYPE
+ * * read results and check if contain the name of the filesystem
+ */
+
+#include "statmount.h"
+#include "lapi/stat.h"
+#include "lapi/sched.h"
+
+#define MNTPOINT "mntpoint"
+#define SM_SIZE (1 << 10)
+
+static uint64_t root_id;
+static struct statmount *st_mount;
+
+static void run(void)
+{
+	memset(st_mount, 0, SM_SIZE);
+
+	TST_EXP_PASS(statmount(
+		root_id,
+		STATMOUNT_FS_TYPE,
+		st_mount,
+		SM_SIZE,
+		0));
+
+	if (TST_RET == -1)
+		return;
+
+	TST_EXP_EQ_LI(st_mount->mask, STATMOUNT_FS_TYPE);
+	TST_EXP_EXPR(strcmp(st_mount->str + st_mount->fs_type, tst_device->fs_type) == 0,
+		"statmount() read '%s', expected '%s'",
+		st_mount->str + st_mount->fs_type, tst_device->fs_type);
+}
+
+static void setup(void)
+{
+	struct statx sx;
+
+	SAFE_STATX(AT_FDCWD, MNTPOINT, 0, STATX_MNT_ID_UNIQUE, &sx);
+	root_id = sx.stx_mnt_id;
+}
+
+static struct tst_test test = {
+	.test_all = run,
+	.setup = setup,
+	.min_kver = "6.8",
+	.format_device = 1,
+	.mount_device = 1,
+	.mntpoint = MNTPOINT,
+	.all_filesystems = 1,
+	.skip_filesystems = (const char *const []) {
+		"fuse",
+		NULL
+	},
+	.bufs = (struct tst_buffers []) {
+		{&st_mount, .size = SM_SIZE},
+		{}
+	}
+};
-- 
2.35.3