MTOD
ip = MTOD(mb, ip_t *);
ip = MTOD(m, ip_t *);
while ((i = (*r->r_readip)(MTOD(m, char *), sizeof(m->mb_buf),
mntdata_t *mntdata = MTOD(VTOM(vp));
zone_t *zonep = MTOD(mnp)->mnt_zone_ref.zref_zone;
mntdata_t *mntdata = MTOD(mnp);
zone_t *zonep = MTOD(mnp)->mnt_zone_ref.zref_zone;
mntdata_t *mnd = MTOD(mnp);
atomic_inc_32(&MTOD(nmnp)->mnt_nopen);
atomic_dec_32(&MTOD(mnp)->mnt_nopen);
zone_t *zonep = MTOD(mnp)->mnt_zone_ref.zref_zone;
fin->fin_ipoff = (char *)ip - MTOD(m, char *);
ipoff = (char *)fin->fin_ip - MTOD(fin->fin_m, char *);
error = copyoutptr(MTOD(m, char *),
ip = MTOD(m, char *) + ipoff;
# define COPYDATA(m, o, l, b) bcopy(MTOD((mb_t *)m, char *) + (o), \
MTOD((mb_t *)m, char *) + (o), \
# ifndef MTOD
bcopy(newbuf, MTOD(m, char *) + off, nlen);
bcopy(newmsg, MTOD(m, char *) + off, nlen);