217 			     struct sg_io_hdr *hdr, fmode_t mode)  in blk_fill_sghdr_rq()  argument
221 	if (copy_from_user(req->cmd, hdr->cmdp, hdr->cmd_len))  in blk_fill_sghdr_rq()
229 	req->cmd_len = hdr->cmd_len;  in blk_fill_sghdr_rq()
231 	rq->timeout = msecs_to_jiffies(hdr->timeout);  in blk_fill_sghdr_rq()
242 static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr,  in blk_complete_sghdr_rq()  argument
251 	hdr->status = req->result & 0xff;  in blk_complete_sghdr_rq()
252 	hdr->masked_status = status_byte(req->result);  in blk_complete_sghdr_rq()
253 	hdr->msg_status = msg_byte(req->result);  in blk_complete_sghdr_rq()
254 	hdr->host_status = host_byte(req->result);  in blk_complete_sghdr_rq()
255 	hdr->driver_status = driver_byte(req->result);  in blk_complete_sghdr_rq()
256 	hdr->info = 0;  in blk_complete_sghdr_rq()
257 	if (hdr->masked_status || hdr->host_status || hdr->driver_status)  in blk_complete_sghdr_rq()
258 		hdr->info |= SG_INFO_CHECK;  in blk_complete_sghdr_rq()
259 	hdr->resid = req->resid_len;  in blk_complete_sghdr_rq()
260 	hdr->sb_len_wr = 0;  in blk_complete_sghdr_rq()
262 	if (req->sense_len && hdr->sbp) {  in blk_complete_sghdr_rq()
263 		int len = min((unsigned int) hdr->mx_sb_len, req->sense_len);  in blk_complete_sghdr_rq()
265 		if (!copy_to_user(hdr->sbp, req->sense, len))  in blk_complete_sghdr_rq()
266 			hdr->sb_len_wr = len;  in blk_complete_sghdr_rq()
279 		struct sg_io_hdr *hdr, fmode_t mode)  in sg_io()  argument
289 	if (hdr->interface_id != 'S')  in sg_io()
292 	if (hdr->dxfer_len > (queue_max_hw_sectors(q) << 9))  in sg_io()
295 	if (hdr->dxfer_len)  in sg_io()
296 		switch (hdr->dxfer_direction) {  in sg_io()
306 	if (hdr->flags & SG_FLAG_Q_AT_HEAD)  in sg_io()
315 	if (hdr->cmd_len > BLK_MAX_CDB) {  in sg_io()
316 		req->cmd = kzalloc(hdr->cmd_len, GFP_KERNEL);  in sg_io()
321 	ret = blk_fill_sghdr_rq(q, rq, hdr, mode);  in sg_io()
326 	if (hdr->iovec_count) {  in sg_io()
331 				   hdr->dxferp, hdr->iovec_count,  in sg_io()
337 		iov_iter_truncate(&i, hdr->dxfer_len);  in sg_io()
341 	} else if (hdr->dxfer_len)  in sg_io()
342 		ret = blk_rq_map_user(q, rq, NULL, hdr->dxferp, hdr->dxfer_len,  in sg_io()
359 	hdr->duration = jiffies_to_msecs(jiffies - start_time);  in sg_io()
361 	ret = blk_complete_sghdr_rq(rq, hdr, bio);  in sg_io()
582 			struct sg_io_hdr hdr;  in scsi_cmd_ioctl()  local
585 			if (copy_from_user(&hdr, arg, sizeof(hdr)))  in scsi_cmd_ioctl()
587 			err = sg_io(q, bd_disk, &hdr, mode);  in scsi_cmd_ioctl()
591 			if (copy_to_user(arg, &hdr, sizeof(hdr)))  in scsi_cmd_ioctl()
597 			struct sg_io_hdr hdr;  in scsi_cmd_ioctl()  local
603 			memset(&hdr, 0, sizeof(hdr));  in scsi_cmd_ioctl()
604 			hdr.interface_id = 'S';  in scsi_cmd_ioctl()
605 			hdr.cmd_len = sizeof(cgc.cmd);  in scsi_cmd_ioctl()
606 			hdr.dxfer_len = cgc.buflen;  in scsi_cmd_ioctl()
610 					hdr.dxfer_direction = SG_DXFER_UNKNOWN;  in scsi_cmd_ioctl()
613 					hdr.dxfer_direction = SG_DXFER_TO_DEV;  in scsi_cmd_ioctl()
616 					hdr.dxfer_direction = SG_DXFER_FROM_DEV;  in scsi_cmd_ioctl()
619 					hdr.dxfer_direction = SG_DXFER_NONE;  in scsi_cmd_ioctl()
627 			hdr.dxferp = cgc.buffer;  in scsi_cmd_ioctl()
628 			hdr.sbp = cgc.sense;  in scsi_cmd_ioctl()
629 			if (hdr.sbp)  in scsi_cmd_ioctl()
630 				hdr.mx_sb_len = sizeof(struct request_sense);  in scsi_cmd_ioctl()
631 			hdr.timeout = jiffies_to_msecs(cgc.timeout);  in scsi_cmd_ioctl()
632 			hdr.cmdp = ((struct cdrom_generic_command __user*) arg)->cmd;  in scsi_cmd_ioctl()
633 			hdr.cmd_len = sizeof(cgc.cmd);  in scsi_cmd_ioctl()
635 			err = sg_io(q, bd_disk, &hdr, mode);  in scsi_cmd_ioctl()
639 			if (hdr.status)  in scsi_cmd_ioctl()
643 			cgc.buflen = hdr.resid;  in scsi_cmd_ioctl()