+#define AUTOFS_IOC_EXPIRE_MULTI _IOW(0x93,0x66,int)
+#define AUTOFS_IOC_PROTOSUBVER _IOR(0x93,0x67,int)
+#define AUTOFS_IOC_ASKREGHOST _IOR(0x93,0x68,int)
+#define AUTOFS_IOC_TOGGLEREGHOST _IOR(0x93,0x69,int)
+#define AUTOFS_IOC_ASKUMOUNT _IOR(0x93,0x70,int)