diff --git a/libsdk/libcfs.h b/libsdk/libcfs.h
index 1d4dea08f..8bdab86c0 100644
--- a/libsdk/libcfs.h
+++ b/libsdk/libcfs.h
@@ -155,6 +155,8 @@ extern int cfs_unlock_dir(int64_t id, char *path);
 extern int cfs_get_dir_lock(int64_t id, char *path, int64_t *lock_id, char **valid_time);
 extern int cfs_symlink(int64_t id, char *src_path, char *dst_path);
 extern int cfs_link(int64_t id, char *src_path, char *dst_path);
+extern char cfs_IsDir(mode_t mode);
+extern char cfs_IsRegular(mode_t mode);
 
 #ifdef __cplusplus
 }
diff --git a/libsdk/libsdk.go b/libsdk/libsdk.go
index 0ccd62de7..38f0b2509 100644
--- a/libsdk/libsdk.go
+++ b/libsdk/libsdk.go
@@ -256,6 +256,24 @@ type client struct {
 	mu   sync.Mutex
 }
 
+//export cfs_IsDir
+func cfs_IsDir(mode C.mode_t) C.char {
+	var isDir uint8 = 0
+	if (mode & C.S_IFMT) == C.S_IFDIR {
+		isDir = 1
+	}
+	return C.char(isDir)
+}
+
+//export cfs_IsRegular
+func cfs_IsRegular(mode C.mode_t) C.char {
+	var isRegular uint8 = 0
+	if (mode & C.S_IFMT) == C.S_IFREG {
+		isRegular = 1
+	}
+	return C.char(isRegular)
+}
+
 //export cfs_symlink
 func cfs_symlink(id C.int64_t, src_path *C.char, dst_path *C.char) C.int {
 	c, exist := getClient(int64(id))