mb_reserve
ace_len_p = mb_reserve(mbp, sizeof (*ace_len_p));
acl_len_p = mb_reserve(mbp, sizeof (*acl_len_p));
owneroffp = mb_reserve(mbp, sizeof (*owneroffp));
groupoffp = mb_reserve(mbp, sizeof (*groupoffp));
sacloffp = mb_reserve(mbp, sizeof (*sacloffp));
dacloffp = mb_reserve(mbp, sizeof (*dacloffp));
lmresp = mb_reserve(lm_mbp, NTLM_HASH_SZ);
ntresp = mb_reserve(nt_mbp, NTLM_HASH_SZ);
pmic = mb_reserve(out_mb, NTLM_HASH_SZ);
encr_ssn_key = mb_reserve(ek_mbp, NTLM_HASH_SZ);
data_in_offp = mb_reserve(mbp, 4);
data_in_lenp = mb_reserve(mbp, 4);
ndialects_p = mb_reserve(mbp, 2); /* Dialect Count */
plenp = mb_reserve(mbp, 2);
name_offp = mb_reserve(mbp, 2); /* Name offset */
name_lenp = mb_reserve(mbp, 2); /* Name len */
cctx_offp = mb_reserve(mbp, 4); /* Context offset */
cctx_lenp = mb_reserve(mbp, 4); /* Context len */
rqp->sr_wcount = mb_reserve(&rqp->sr_rq, sizeof (uint8_t));
rqp->sr_bcount = mb_reserve(&rqp->sr_rq, sizeof (uint16_t));
name_lenp = mb_reserve(mbp, 4); /* name len */
buffer_lenp = mb_reserve(mbp, sizeof (uint32_t));
name_lenp = mb_reserve(mbp, 4);
name_lenp = mb_reserve(mbp, sizeof (uint16_t)); /* FileNameLen */
void *mb_reserve(mbchain_t *, int size);