3376 	struct iso_pdesc	saved_desc[MAX_IVDs];  in extend_iso_archive()  local
3388 	ret = pread64(fd, saved_desc, sizeof (saved_desc),  in extend_iso_archive()
3390 	if (ret != sizeof (saved_desc)) {  in extend_iso_archive()
3396 	if (memcmp(saved_desc[0].type, "\1CD001", 6)) {  in extend_iso_archive()
3406 	next_session = P2ROUNDUP(from_733(saved_desc[0].volume_space_size), 16);  in extend_iso_archive()
3431 	ret = pread64(newfd, saved_desc, sizeof (saved_desc),  in extend_iso_archive()
3433 	if (ret != sizeof (saved_desc)) {  in extend_iso_archive()
3439 	if (memcmp(saved_desc[0].type, "\1CD001", 6)) {  in extend_iso_archive()
3445 	new_size = from_733(saved_desc[0].volume_space_size) + next_session;  in extend_iso_archive()
3446 	to_733(saved_desc[0].volume_space_size, new_size);  in extend_iso_archive()
3449 		if (saved_desc[i].type[0] == (unsigned char)255)  in extend_iso_archive()
3451 		if (memcmp(saved_desc[i].id, "CD001", 5))  in extend_iso_archive()
3458 		to_733(saved_desc[i].volume_space_size, new_size);  in extend_iso_archive()
3461 	ret = pwrite64(fd, saved_desc, DVD_BLOCK, VOLDESC_OFF*CD_BLOCK);  in extend_iso_archive()