43 static char	*tbf = NULL;  variable
167 	if (tbf != NULL)  in newtapebuf()
168 		free(tbf);  in newtapebuf()
169 	tbf = (char *)malloc(nsize);  in newtapebuf()
170 	if (tbf == NULL) {  in newtapebuf()
433 	if (tbf == NULL) {  in getvol()
490 			(void) strcpy(tbf, ": ");  in getvol()
494 					    tbf, i+1);  in getvol()
495 					(void) strcpy(tbf, ", ");  in getvol()
504 			(void) fgets(tbf, (int)tbfsize, terminal);  in getvol()
505 		} while (!feof(terminal) && tbf[0] == '\n');  in getvol()
508 		newvol = atoi(tbf);  in getvol()
540 	(void) fgets(tbf, (int)tbfsize, terminal);  in getvol()
546 	if (tbf[0] != '\n') {  in getvol()
547 		(void) strncpy(magtape, tbf, sizeof (magtape));  in getvol()
1473 	if (tbf == NULL) {  in readtape()
1489 		sp = &((union u_spcl *)&tbf[bct*tp_bsize])->s_spcl;  in readtape()
1496 				    &tbf[i*tp_bsize])->c_magic = 0;  in readtape()
1502 		bcopy(&tbf[(bct++*tp_bsize)], b, (size_t)tp_bsize);  in readtape()
1511 		((struct s_spcl *)&tbf[i*sizeof (struct s_spcl)])->c_magic = 0;  in readtape()
1521 		i = rmtread(&tbf[rd], cnt);  in readtape()
1523 		i = read(mt, &tbf[rd], cnt);  in readtape()
1585 		bzero(tbf, (size_t)i);  in readtape()
1603 	sp = &((union u_spcl *)tbf)->s_spcl;  in readtape()
1624 		bcopy((char *)&endoftapemark, &tbf[rd], (size_t)tp_bsize);  in readtape()
1627 	bcopy(&tbf[(bct++*tp_bsize)], b, (size_t)tp_bsize);  in readtape()
1639 	if (tbf == NULL) {  in findtapeblksize()
1643 		assert(tbf != NULL);  in findtapeblksize()
1649 		((struct s_spcl *)&tbf[i * tp_bsize])->c_magic = 0;  in findtapeblksize()
1652 		tape_rec_size = rmtread(tbf, ntrec * tp_bsize);  in findtapeblksize()
1654 		tape_rec_size = read(mt, tbf, ntrec * tp_bsize);  in findtapeblksize()