1 LOOP_SET_FD 0x4C00 2 LOOP_CLR_FD 0x4C01 3 LOOP_SET_STATUS 0x4C02 4 LOOP_GET_STATUS 0x4C03 5 LOOP_SET_STATUS64 0x4C04 6 LOOP_GET_STATUS64 0x4C05 7 LOOP_CHANGE_FD 0x4C06 8 LOOP_SET_CAPACITY 0x4C07 9 LOOP_SET_DIRECT_IO 0x4C08 10 LOOP_CTL_ADD 0x4C80 11 LOOP_CTL_REMOVE 0x4C81 12 LOOP_CTL_GET_FREE 0x4C82 13 #stop 14