f4a3f04cb2
used in ioctl routines to do the right thing when the FKIOCTL flag is passed to the IOCTL routine indicating its a in-kernel VOP_IOCTL call and indirect addresses provided in the arguments are to be seen as kernel adresses rather than userland adresses. A simple substitution and prepending of the `flags' passed on to the ioctl handler is enough to DTRT.