tests/subsys/fs/common/test_fs_mount_flags.c

/*
 * Copyright (c) 2020 Nordic Semiconductor ASA
 * Copyright (c) 2023 Antmicro
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <zephyr/kernel.h>
#include <zephyr/ztest.h>
#include <zephyr/fs/fs.h>

/* Mount point for test should be provided by test runner */
extern struct fs_mount_t *mount_flags_mp;
extern const char *mount_flags_mnt_point_str;

void test_fs_mount_flags(void)
{
	int ret = 0;
	struct fs_file_t fs;
	struct fs_mount_t *mp = mount_flags_mp;

	fs_file_t_init(&fs);

	/* Test FS_MOUNT_FLAG_NO_FORMAT flag */
	mp->flags |= FS_MOUNT_FLAG_NO_FORMAT;
	ret = fs_mount(mp);
	TC_PRINT("Mount unformatted with FS_MOUNT_FLAG_NO_FORMAT set\n");
	zassert_false(ret == 0, "Expected failure", ret);

	/* Test FS_MOUNT_FLAG_READ_ONLY on non-formatted volume*/
	mp->flags = FS_MOUNT_FLAG_READ_ONLY;
	ret = fs_mount(mp);
	TC_PRINT("Mount unformatted with FS_MOUNT_FLAG_READ_ONLY set\n");
	zassert_false(ret == 0, "Expected failure", ret);

	/* Format volume and add some files/dirs to check read-only flag */
	mp->flags = 0;
	ret = fs_mount(mp);
	TC_PRINT("Mount again to format volume\n");
	zassert_equal(ret, 0, "Expected success", ret);
	TC_PRINT("Create some file\n");
	ret = fs_open(&fs, "/sml/some", FS_O_CREATE);
	zassert_equal(ret, 0, "Expected success", ret);
	fs_close(&fs);
	TC_PRINT("Create other directory\n");
	ret = fs_mkdir("/sml/other");
	zassert_equal(ret, 0, "Expected success", ret);

	ret = fs_unmount(mp);
	zassert_equal(ret, 0, "Expected success", ret);

	/* Check fs operation on volume mounted with FS_MOUNT_FLAG_READ_ONLY */
	mp->flags = FS_MOUNT_FLAG_READ_ONLY;
	TC_PRINT("Mount as read-only\n");
	ret = fs_mount(mp);
	zassert_equal(ret, 0, "Expected success", ret);

	/* Attempt creating new file */
	ret = fs_open(&fs, "/sml/nosome", FS_O_CREATE);
	zassert_equal(ret, -EROFS, "Expected EROFS", ret);
	ret = fs_mkdir("/sml/another");
	zassert_equal(ret, -EROFS, "Expected EROFS", ret);
	ret = fs_rename("/sml/some", "/sml/nosome");
	zassert_equal(ret, -EROFS, "Expected EROFS", ret);
	ret = fs_unlink("/sml/some");
	zassert_equal(ret, -EROFS, "Expected EROFS", ret);
	ret = fs_open(&fs, "/sml/other", FS_O_CREATE);
	zassert_equal(ret, -EROFS, "Expected EROFS", ret);
	ret = fs_open(&fs, "/sml/some", FS_O_RDWR);
	zassert_equal(ret, -EROFS, "Expected EROFS", ret);
	ret = fs_open(&fs, "/sml/some", FS_O_READ);
	zassert_equal(ret, 0, "Expected success", ret);
	fs_close(&fs);

	ret = fs_unmount(mp);
	zassert_equal(ret, 0, "Expected success", ret);
}