240 prwritectl_readin(prwritectl_t *prwc, size_t needed)  in prwritectl_readin()  argument
249 	if (prwc->prwc_curvalid > needed) {  in prwritectl_readin()
250 		ASSERT3U(prwc->prwc_buflen, >=, prwc->prwc_curvalid);  in prwritectl_readin()
251 		ASSERT3U(prwc->prwc_buflen, >=, needed);  in prwritectl_readin()
267 	if (needed - prwc->prwc_curvalid > prwc->prwc_uiop->uio_resid) {  in prwritectl_readin()
271 	if (prwc->prwc_locked) {  in prwritectl_readin()
272 		prunlock(prwc->prwc_pnp);  in prwritectl_readin()
273 		prwc->prwc_locked = B_FALSE;  in prwritectl_readin()
276 	if (needed > prwc->prwc_buflen) {  in prwritectl_readin()
278 		prwc->prwc_buf = kmem_rezalloc(prwc->prwc_buf,  in prwritectl_readin()
279 		    prwc->prwc_buflen, new_len, KM_SLEEP);  in prwritectl_readin()
280 		if (prwc->prwc_need32) {  in prwritectl_readin()
281 			prwc->prwc_buf32 = kmem_rezalloc(prwc->prwc_buf32,  in prwritectl_readin()
282 			    prwc->prwc_buflen, new_len, KM_SLEEP);  in prwritectl_readin()
284 		prwc->prwc_buflen = new_len;  in prwritectl_readin()
287 	toread = MIN(prwc->prwc_buflen - prwc->prwc_curvalid,  in prwritectl_readin()
288 	    prwc->prwc_uiop->uio_resid);  in prwritectl_readin()
289 	ASSERT3U(toread, >=, needed - prwc->prwc_curvalid);  in prwritectl_readin()
290 	start = (void *)((uintptr_t)prwc->prwc_buf + prwc->prwc_curvalid);  in prwritectl_readin()
291 	if ((ret = uiomove(start, toread, UIO_WRITE, prwc->prwc_uiop)) != 0) {  in prwritectl_readin()
295 	prwc->prwc_curvalid += toread;  in prwritectl_readin()
300 prwritectl_cmd_identify(const prwritectl_t *prwc,  in prwritectl_cmd_identify()  argument
307 		cmd = (long)*(int32_t *)prwc->prwc_buf;  in prwritectl_cmd_identify()
309 		cmd = *(long *)prwc->prwc_buf;  in prwritectl_cmd_identify()
350 	prwritectl_t prwc;  in prwritectl_common()  local
354 	bzero(&prwc, sizeof (prwc));  in prwritectl_common()
355 	prwc.prwc_pnp = VTOP(vp);  in prwritectl_common()
356 	prwc.prwc_uiop = uiop;  in prwritectl_common()
357 	prwc.prwc_need32 = (cmdsize == sizeof (int32_t));  in prwritectl_common()
366 	while (uiop->uio_resid > 0 || prwc.prwc_curvalid > 0) {  in prwritectl_common()
374 		if ((ret = prwritectl_readin(&prwc, cmdsize)) != 0) {  in prwritectl_common()
390 		if ((proc_cmd = prwritectl_cmd_identify(&prwc, proc_info,  in prwritectl_common()
416 			if ((ret = prwritectl_readin(&prwc, needed_data)) !=  in prwritectl_common()
421 			VERIFY3U(prwc.prwc_curvalid, >, cmdsize);  in prwritectl_common()
422 			data = (void *)((uintptr_t)prwc.prwc_buf + cmdsize);  in prwritectl_common()
435 		if ((ret = prwritectl_readin(&prwc, needed_data)) != 0) {  in prwritectl_common()
458 			    prwc.prwc_curvalid > needed_data ||  in prwritectl_common()
459 			    prwc.prwc_uiop->uio_resid > 0) {  in prwritectl_common()
462 				if ((ret = prwritectl_readin(&prwc,  in prwritectl_common()
469 		if (!prwc.prwc_locked) {  in prwritectl_common()
470 			ret = prlock(prwc.prwc_pnp, ZNO);  in prwritectl_common()
474 			prwc.prwc_locked = B_TRUE;  in prwritectl_common()
492 		data = (void *)((uintptr_t)prwc.prwc_buf + cmdsize);  in prwritectl_common()
498 		if (prwc.prwc_need32 && ((uintptr_t)data % alignof (long)) !=  in prwritectl_common()
500 			bcopy(data, prwc.prwc_buf32, needed_data - cmdsize);  in prwritectl_common()
501 			data = prwc.prwc_buf32;  in prwritectl_common()
503 		ret = pr_controlf(proc_cmd->pcs_cmd, data, prwc.prwc_pnp, cr);  in prwritectl_common()
505 			prwc.prwc_locked = B_FALSE;  in prwritectl_common()
528 		if (prwc.prwc_buf32 != NULL) {  in prwritectl_common()
529 			bzero(prwc.prwc_buf32, needed_data - cmdsize);  in prwritectl_common()
532 		if (prwc.prwc_curvalid > needed_data) {  in prwritectl_common()
533 			size_t save_size = prwc.prwc_curvalid - needed_data;  in prwritectl_common()
534 			void *first_save = (void *)((uintptr_t)prwc.prwc_buf +  in prwritectl_common()
536 			memmove(prwc.prwc_buf, first_save, save_size);  in prwritectl_common()
537 			void *first_zero = (void *)((uintptr_t)prwc.prwc_buf +  in prwritectl_common()
541 			bzero(prwc.prwc_buf, prwc.prwc_curvalid);  in prwritectl_common()
543 		prwc.prwc_curvalid -= needed_data;  in prwritectl_common()
553 	if (prwc.prwc_locked) {  in prwritectl_common()
554 		prunlock(prwc.prwc_pnp);  in prwritectl_common()
555 		prwc.prwc_locked = B_FALSE;  in prwritectl_common()
558 	if (prwc.prwc_buf != NULL) {  in prwritectl_common()
559 		kmem_free(prwc.prwc_buf, prwc.prwc_buflen);  in prwritectl_common()
562 	if (prwc.prwc_buf32 != NULL) {  in prwritectl_common()
563 		VERIFY(prwc.prwc_need32);  in prwritectl_common()
564 		kmem_free(prwc.prwc_buf32, prwc.prwc_buflen);  in prwritectl_common()