55 #define	MI_IS_TRANSPARENT(mp)	(mp->b_cont && \
56 	(mp->b_cont->b_rptr != mp->b_cont->b_wptr))
217 		cq->cq_private = mp->b_cont;  in mi_copyin()
220 		bcopy(mp->b_cont->b_rptr, &cq->cq_addr, sizeof (cq->cq_addr));  in mi_copyin()
221 		mp->b_cont = NULL;  in mi_copyin()
250 	mp1->b_cont = mp->b_cont;  in mi_copyin()
251 	mp->b_cont = mp1;  in mi_copyin()
254 	mp->b_cont = mp1->b_cont;  in mi_copyin()
255 	mp1->b_cont = NULL;  in mi_copyin()
270 	if (mp->b_cont) {  in mi_copyin()
271 		freemsg(mp->b_cont);  in mi_copyin()
272 		mp->b_cont = NULL;  in mi_copyin()
302 	cq->cq_private = mp->b_cont;  in mi_copyin_n()
305 	bcopy(mp->b_cont->b_rptr, &cq->cq_addr, sizeof (cq->cq_addr));  in mi_copyin_n()
307 	mp->b_cont = NULL;  in mi_copyin_n()
321 	if (mp->b_datap->db_type != M_IOCDATA || !mp->b_cont) {  in mi_copyout()
326 	mp1 = mp->b_cont;  in mi_copyout()
327 	if ((int)(uintptr_t)cp->cp_rval || !mp1->b_cont) {  in mi_copyout()
331 	if (!mp1->b_cont->b_cont && !MI_IS_TRANSPARENT(mp)) {  in mi_copyout()
334 		mp->b_cont = mp1->b_cont;  in mi_copyout()
336 		mp1 = mp->b_cont;  in mi_copyout()
354 	for (mp2 = mp1; mp2->b_cont->b_cont; mp2 = mp2->b_cont)  in mi_copyout()
360 		cq->cq_addr = (char *)mp2->b_cont->b_next;  in mi_copyout()
361 	mp1 = mp2->b_cont;  in mi_copyout()
363 	mp->b_cont = mp1;  in mi_copyout()
364 	mp2->b_cont = NULL;  in mi_copyout()
385 					freemsg(mp->b_cont);  in mi_copyout_alloc()
386 					mp->b_cont = NULL;  in mi_copyout_alloc()
392 			mp1->b_cont = mp->b_cont;  in mi_copyout_alloc()
393 			mp->b_cont = mp1;  in mi_copyout_alloc()
429 	if ((mp1 = mp->b_cont) != NULL) {  in mi_copy_done()
430 		for (; mp1; mp1 = mp1->b_cont) {  in mi_copy_done()
434 		freemsg(mp->b_cont);  in mi_copy_done()
435 		mp->b_cont = NULL;  in mi_copy_done()
447 	mp1 = mp->b_cont;  in mi_copy_state()
448 	mp->b_cont = cp->cp_private;  in mi_copy_state()
450 		if (mp1->b_cont && !pullupmsg(mp1, -1)) {  in mi_copy_state()
454 		linkb(mp->b_cont, mp1);  in mi_copy_state()
674 	while (mp->b_cont)  in mi_mpprintf_putc()
675 		mp = mp->b_cont;  in mi_mpprintf_putc()
677 		mp->b_cont = allocb(1024, BPRI_HI);  in mi_mpprintf_putc()
678 		mp = mp->b_cont;  in mi_mpprintf_putc()
894 	for (; mp; mp = mp->b_cont) {  in mi_offset_paramc()
1520 		mp->b_cont = trailer_mp;  in mi_tpi_trailer_alloc()