43 static char	*tbf = NULL;  variable
168 	if (tbf != NULL)  in newtapebuf()
169 		free(tbf);  in newtapebuf()
170 	tbf = (char *)malloc(nsize);  in newtapebuf()
171 	if (tbf == NULL) {  in newtapebuf()
434 	if (tbf == NULL) {  in getvol()
491 			(void) strcpy(tbf, ": ");  in getvol()
495 					    tbf, i+1);  in getvol()
496 					(void) strcpy(tbf, ", ");  in getvol()
505 			(void) fgets(tbf, (int)tbfsize, terminal);  in getvol()
506 		} while (!feof(terminal) && tbf[0] == '\n');  in getvol()
509 		newvol = atoi(tbf);  in getvol()
541 	(void) fgets(tbf, (int)tbfsize, terminal);  in getvol()
547 	if (tbf[0] != '\n') {  in getvol()
548 		(void) strncpy(magtape, tbf, sizeof (magtape));  in getvol()
1470 	if (tbf == NULL) {  in readtape()
1486 		sp = &((union u_spcl *)&tbf[bct*tp_bsize])->s_spcl;  in readtape()
1493 				    &tbf[i*tp_bsize])->c_magic = 0;  in readtape()
1499 		bcopy(&tbf[(bct++*tp_bsize)], b, (size_t)tp_bsize);  in readtape()
1508 		((struct s_spcl *)&tbf[i*sizeof (struct s_spcl)])->c_magic = 0;  in readtape()
1518 		i = rmtread(&tbf[rd], cnt);  in readtape()
1520 		i = read(mt, &tbf[rd], cnt);  in readtape()
1582 		bzero(tbf, (size_t)i);  in readtape()
1600 	sp = &((union u_spcl *)tbf)->s_spcl;  in readtape()
1621 		bcopy((char *)&endoftapemark, &tbf[rd], (size_t)tp_bsize);  in readtape()
1624 	bcopy(&tbf[(bct++*tp_bsize)], b, (size_t)tp_bsize);  in readtape()
1636 	if (tbf == NULL) {  in findtapeblksize()
1640 		assert(tbf != NULL);  in findtapeblksize()
1646 		((struct s_spcl *)&tbf[i * tp_bsize])->c_magic = 0;  in findtapeblksize()
1649 		tape_rec_size = rmtread(tbf, ntrec * tp_bsize);  in findtapeblksize()
1651 		tape_rec_size = read(mt, tbf, ntrec * tp_bsize);  in findtapeblksize()