231 			     struct sg_io_hdr *hdr, fmode_t mode)  in blk_fill_sghdr_rq()  argument
235 	if (copy_from_user(req->cmd, hdr->cmdp, hdr->cmd_len))  in blk_fill_sghdr_rq()
243 	req->cmd_len = hdr->cmd_len;  in blk_fill_sghdr_rq()
245 	rq->timeout = msecs_to_jiffies(hdr->timeout);  in blk_fill_sghdr_rq()
256 static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr,  in blk_complete_sghdr_rq()  argument
265 	hdr->status = req->result & 0xff;  in blk_complete_sghdr_rq()
266 	hdr->masked_status = status_byte(req->result);  in blk_complete_sghdr_rq()
267 	hdr->msg_status = msg_byte(req->result);  in blk_complete_sghdr_rq()
268 	hdr->host_status = host_byte(req->result);  in blk_complete_sghdr_rq()
269 	hdr->driver_status = driver_byte(req->result);  in blk_complete_sghdr_rq()
270 	hdr->info = 0;  in blk_complete_sghdr_rq()
271 	if (hdr->masked_status || hdr->host_status || hdr->driver_status)  in blk_complete_sghdr_rq()
272 		hdr->info |= SG_INFO_CHECK;  in blk_complete_sghdr_rq()
273 	hdr->resid = req->resid_len;  in blk_complete_sghdr_rq()
274 	hdr->sb_len_wr = 0;  in blk_complete_sghdr_rq()
276 	if (req->sense_len && hdr->sbp) {  in blk_complete_sghdr_rq()
277 		int len = min((unsigned int) hdr->mx_sb_len, req->sense_len);  in blk_complete_sghdr_rq()
279 		if (!copy_to_user(hdr->sbp, req->sense, len))  in blk_complete_sghdr_rq()
280 			hdr->sb_len_wr = len;  in blk_complete_sghdr_rq()
293 		struct sg_io_hdr *hdr, fmode_t mode)  in sg_io()  argument
303 	if (hdr->interface_id != 'S')  in sg_io()
306 	if (hdr->dxfer_len > (queue_max_hw_sectors(q) << 9))  in sg_io()
309 	if (hdr->dxfer_len)  in sg_io()
310 		switch (hdr->dxfer_direction) {  in sg_io()
320 	if (hdr->flags & SG_FLAG_Q_AT_HEAD)  in sg_io()
329 	if (hdr->cmd_len > BLK_MAX_CDB) {  in sg_io()
330 		req->cmd = kzalloc(hdr->cmd_len, GFP_KERNEL);  in sg_io()
335 	ret = blk_fill_sghdr_rq(q, rq, hdr, mode);  in sg_io()
340 	if (hdr->iovec_count) {  in sg_io()
345 				   hdr->dxferp, hdr->iovec_count,  in sg_io()
351 		iov_iter_truncate(&i, hdr->dxfer_len);  in sg_io()
355 	} else if (hdr->dxfer_len)  in sg_io()
356 		ret = blk_rq_map_user(q, rq, NULL, hdr->dxferp, hdr->dxfer_len,  in sg_io()
373 	hdr->duration = jiffies_to_msecs(jiffies - start_time);  in sg_io()
375 	ret = blk_complete_sghdr_rq(rq, hdr, bio);  in sg_io()
596 			struct sg_io_hdr hdr;  in scsi_cmd_ioctl()  local
599 			if (copy_from_user(&hdr, arg, sizeof(hdr)))  in scsi_cmd_ioctl()
601 			err = sg_io(q, bd_disk, &hdr, mode);  in scsi_cmd_ioctl()
605 			if (copy_to_user(arg, &hdr, sizeof(hdr)))  in scsi_cmd_ioctl()
611 			struct sg_io_hdr hdr;  in scsi_cmd_ioctl()  local
617 			memset(&hdr, 0, sizeof(hdr));  in scsi_cmd_ioctl()
618 			hdr.interface_id = 'S';  in scsi_cmd_ioctl()
619 			hdr.cmd_len = sizeof(cgc.cmd);  in scsi_cmd_ioctl()
620 			hdr.dxfer_len = cgc.buflen;  in scsi_cmd_ioctl()
624 					hdr.dxfer_direction = SG_DXFER_UNKNOWN;  in scsi_cmd_ioctl()
627 					hdr.dxfer_direction = SG_DXFER_TO_DEV;  in scsi_cmd_ioctl()
630 					hdr.dxfer_direction = SG_DXFER_FROM_DEV;  in scsi_cmd_ioctl()
633 					hdr.dxfer_direction = SG_DXFER_NONE;  in scsi_cmd_ioctl()
641 			hdr.dxferp = cgc.buffer;  in scsi_cmd_ioctl()
642 			hdr.sbp = cgc.sense;  in scsi_cmd_ioctl()
643 			if (hdr.sbp)  in scsi_cmd_ioctl()
644 				hdr.mx_sb_len = sizeof(struct request_sense);  in scsi_cmd_ioctl()
645 			hdr.timeout = jiffies_to_msecs(cgc.timeout);  in scsi_cmd_ioctl()
646 			hdr.cmdp = ((struct cdrom_generic_command __user*) arg)->cmd;  in scsi_cmd_ioctl()
647 			hdr.cmd_len = sizeof(cgc.cmd);  in scsi_cmd_ioctl()
649 			err = sg_io(q, bd_disk, &hdr, mode);  in scsi_cmd_ioctl()
653 			if (hdr.status)  in scsi_cmd_ioctl()
657 			cgc.buflen = hdr.resid;  in scsi_cmd_ioctl()