[LTP] [PATCH v2] tst_filesystems01.c: Add test for .filesystems

[Wei Gao]

Fixes: https://github.com/linux-test-project/ltp/issues/1243
Signed-off-by: Wei Gao <wegao@suse.com>
---
 lib/newlib_tests/runtest.sh          |   1 +
 lib/newlib_tests/tst_filesystems01.c | 104 +++++++++++++++++++++++++++
 2 files changed, 105 insertions(+)
 create mode 100644 lib/newlib_tests/tst_filesystems01.c

diff --git a/lib/newlib_tests/runtest.sh b/lib/newlib_tests/runtest.sh
index d87751c2f..71808ef8b 100755
--- a/lib/newlib_tests/runtest.sh
+++ b/lib/newlib_tests/runtest.sh
@@ -24,6 +24,7 @@ tst_checkpoint_wait_timeout
 tst_checkpoint_wake_timeout
 tst_device
 tst_expiration_timer
+tst_filesystems01
 tst_fuzzy_sync0[1-3]
 tst_needs_cmds0[1-36-8]
 tst_res_hexd
diff --git a/lib/newlib_tests/tst_filesystems01.c b/lib/newlib_tests/tst_filesystems01.c
new file mode 100644
index 000000000..4eca0af0e
--- /dev/null
+++ b/lib/newlib_tests/tst_filesystems01.c
@@ -0,0 +1,104 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2025 Wei Gao <wegao@suse.com>
+ */
+
+#include "tst_test.h"
+#include "tst_safe_stdio.h"
+
+#define MOUNT_POINT "mount_test_filesystems"
+
+static int check_inode_size(unsigned int size)
+{
+	char path[PATH_MAX];
+	char line[PATH_MAX];
+	FILE *tune2fs;
+	char str_size[NAME_MAX];
+
+	snprintf(str_size, sizeof(str_size), "%u", size);
+	snprintf(path, sizeof(path), "tune2fs -l %s 2>&1", tst_device->dev);
+	tune2fs = SAFE_POPEN(path, "r");
+
+	while (fgets(line, PATH_MAX, tune2fs) != NULL) {
+		if (strstr(line, "Inode size:") && strstr(line, str_size))
+			return 0;
+	}
+
+	pclose(tune2fs);
+	return -1;
+}
+
+static int check_mnt_data(char *opt)
+{
+	FILE *fp;
+	char line[PATH_MAX];
+
+	fp = SAFE_FOPEN("/proc/mounts", "r");
+
+	while (fgets(line, PATH_MAX, fp) != NULL) {
+		if (strstr(line, tst_device->dev) && strstr(line, opt))
+			return 0;
+	}
+	SAFE_FCLOSE(fp);
+	return -1;
+}
+
+static int check_mkfs_size_opt(unsigned int size)
+{
+	char path[PATH_MAX];
+	char line[PATH_MAX];
+	FILE *dumpe2fs;
+	char str_size[NAME_MAX];
+
+	snprintf(str_size, sizeof(str_size), "%u", size);
+	snprintf(path, sizeof(path), "dumpe2fs -h %s 2>&1", tst_device->dev);
+	dumpe2fs = SAFE_POPEN(path, "r");
+
+	while (fgets(line, PATH_MAX, dumpe2fs) != NULL) {
+		if (strstr(line, "Block count:") && strstr(line, str_size))
+			return 0;
+	}
+
+	pclose(dumpe2fs);
+	return -1;
+}
+
+static void do_test(void)
+{
+	long fs_type;
+
+	fs_type = tst_fs_type(MOUNT_POINT);
+
+	if (fs_type == TST_EXT234_MAGIC) {
+		TST_EXP_PASS((check_inode_size(128)));
+		TST_EXP_PASS((check_mkfs_size_opt(10240)));
+	}
+
+	if (fs_type == TST_XFS_MAGIC)
+		TST_EXP_PASS((check_mnt_data("usrquota")));
+}
+
+static struct tst_test test = {
+	.test_all = do_test,
+	.needs_root = 1,
+	.mntpoint = MOUNT_POINT,
+	.mount_device = 1,
+	.needs_cmds = (const char *[]) {
+		"tune2fs",
+		"dumpe2fs",
+		NULL
+	},
+	.filesystems = (struct tst_fs []) {
+		{
+			.type = "ext3",
+			.mkfs_opts = (const char *const []){"-I", "128", "-b", "1024", NULL},
+			.mkfs_size_opt = "10240",
+		},
+		{
+			.type = "xfs",
+			.mnt_data = "usrquota",
+		},
+		{}
+	},
+
+};
-- 
2.51.0