ncp_setroot_ioctl  124 include/uapi/linux/ncp_fs.h #define NCP_IOC_GETROOT			_IOW('n', 8, struct ncp_setroot_ioctl)
ncp_setroot_ioctl  125 include/uapi/linux/ncp_fs.h #define NCP_IOC_SETROOT			_IOR('n', 8, struct ncp_setroot_ioctl)