git commit -m "first commit for v2"

Devices/Libraries/Systems/can-utils/isobusfs/isobusfs_cmn_dh.c

@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: LGPL-2.0-only
+// SPDX-FileCopyrightText: 2023 Oleksij Rempel <linux@rempel-privat.de>
+
+#include <errno.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "isobusfs_cmn.h"
+
+#include <stdbool.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+int isobusfs_cmn_dh_validate_dir_path(const char *path, bool writable)
+{
+	struct stat path_stat;
+	int mode = R_OK;
+	int ret;
+
+	mode |= writable ? W_OK : 0;
+	ret = access(path, mode);
+	if (ret == -1) {
+		ret = -errno;
+		pr_err("failed to acces path %s, for read %s. %s", path,
+		       writable ? "and write" : "", strerror(ret));
+		return ret;
+	}
+
+	ret = stat(path, &path_stat);
+	if (ret == -1) {
+		ret = -errno;
+		pr_err("failed to get stat information on path %s. %s", path,
+			strerror(ret));
+		return ret;
+	}
+
+	if (!S_ISDIR(path_stat.st_mode)) {
+		pr_err("path %s is not a directory", path);
+		return -ENOTDIR;
+	}
+
+	return 0;
+}
+