19 typedef struct Voldesc Voldesc;  typedef
20 struct Voldesc {  struct
21 	uchar	magic[8];	/* 0x01, "CD001", 0x01, 0x00 */
22 	uchar	systemid[32];	/* system identifier */
23 	uchar	volumeid[32];	/* volume identifier */
24 	uchar	unused[8];	/* character set in secondary desc */
25 	uchar	volsize[8];	/* volume size */
26 	uchar	charset[32];
27 	uchar	volsetsize[4];	/* volume set size = 1 */
28 	uchar	volseqnum[4];	/* volume sequence number = 1 */
29 	uchar	blocksize[4];	/* logical block size */
53 	Voldesc *v;  in dumpbootvol()  argument