133 	int rc;  in tapechar_read()  local
159 	rc = tapechar_check_idalbuffer(device, block_size);  in tapechar_read()
160 	if (rc)  in tapechar_read()
161 		return rc;  in tapechar_read()
169 	rc = tape_do_io(device, request);  in tapechar_read()
170 	if (rc == 0) {  in tapechar_read()
171 		rc = block_size - request->rescnt;  in tapechar_read()
172 		DBF_EVENT(6, "TCHAR:rbytes:  %x\n", rc);  in tapechar_read()
175 					data, rc) != 0)  in tapechar_read()
176 			rc = -EFAULT;  in tapechar_read()
179 	return rc;  in tapechar_read()
193 	int i, rc;  in tapechar_write()  local
211 	rc = tapechar_check_idalbuffer(device, block_size);  in tapechar_write()
212 	if (rc)  in tapechar_write()
213 		return rc;  in tapechar_write()
221 	rc = 0;  in tapechar_write()
227 			rc = -EFAULT;  in tapechar_write()
230 		rc = tape_do_io(device, request);  in tapechar_write()
231 		if (rc)  in tapechar_write()
241 	if (rc == -ENOSPC) {  in tapechar_write()
249 			rc = 0;  in tapechar_write()
260 	if (!rc)  in tapechar_write()
263 	return rc ? rc : written;  in tapechar_write()
273 	int minor, rc;  in tapechar_open()  local
289 	rc = tape_open(device);  in tapechar_open()
290 	if (rc == 0) {  in tapechar_open()
296 	return rc;  in tapechar_open()
345 	int rc;  in __tapechar_ioctl()  local
376 		rc = tape_mtop(device, op.mt_op, op.mt_count);  in __tapechar_ioctl()
378 		if (op.mt_op == MTWEOF && rc == 0) {  in __tapechar_ioctl()
384 		return rc;  in __tapechar_ioctl()
390 		rc = tape_mtop(device, MTTELL, 1);  in __tapechar_ioctl()
391 		if (rc < 0)  in __tapechar_ioctl()
392 			return rc;  in __tapechar_ioctl()
393 		pos.mt_blkno = rc;  in __tapechar_ioctl()
415 			rc = tape_mtop(device, MTTELL, 1);  in __tapechar_ioctl()
417 			if (rc < 0)  in __tapechar_ioctl()
418 				return rc;  in __tapechar_ioctl()
420 			if (rc == 0)  in __tapechar_ioctl()
423 			get.mt_blkno = rc;  in __tapechar_ioctl()
441 	long rc;  in tapechar_ioctl()  local
447 	rc = __tapechar_ioctl(device, no, data);  in tapechar_ioctl()
449 	return rc;  in tapechar_ioctl()