-#define MS_FORCE MNT_FORCE
-#define MS_OVERLAY 32768
-#define MS_NOMNTTAB 0 /* Not supported in Linux */
-#define MS_OPTIONSTR 0 /* Not necessary in Linux */
+#define MS_USERS 0x40000000
+#define MS_OWNER 0x10000000
+#define MS_GROUP 0x08000000
+#define MS_COMMENT 0x02000000
+#define MS_FORCE MNT_FORCE
+#define MS_DETACH MNT_DETACH