dadk_iob_xfer
caddr_t dadk_iob_xfer(opaque_t objp, struct tgdk_iob *iobp, int rw);
dadk_iob_xfer,
bufa = dadk_iob_xfer(DKTP_DATA, handle, B_READ);
bufa = dadk_iob_xfer(DKTP_DATA, handle, B_WRITE);
dkdevidp = (struct dk_devid *)dadk_iob_xfer(DKTP_DATA, handle, B_READ);
(void) dadk_iob_xfer(DKTP_DATA, handle, B_WRITE);
ap = (struct alts_parttbl *)dadk_iob_xfer(DKTP_DATA, handle, B_READ);
enttblp = (struct alts_ent *)dadk_iob_xfer(DKTP_DATA, handle, B_READ);