FSCTL_SET_SPARSE 50 source3/include/ntioctl.h #define FSCTL_SET_SPARSE 0x000900C4 FSCTL_SET_SPARSE 53 source4/libcli/raw/ioctl.h #define FSCTL_SET_SPARSE (FSCTL_FILESYSTEM | FSCTL_ACCESS_ANY | 0x00C4 | FSCTL_METHOD_BUFFERED)