49 struct	disktab {  struct
54 	 * disk_info mandatory fields (not necessarily mandatory for disktab).  argument
59 	__uint64_t d_media_size;
60 	__uint64_t d_media_blocks;
61 	int	d_media_blksize;
62 	int	d_dsflags;
67 	unsigned int	d_nheads;	/* (used to be d_ntracks) */
68 	unsigned int	d_secpertrack;	/* (used to be d_nsectors) */
69 	unsigned int	d_secpercyl;
70 	unsigned int	d_ncylinders;
72 	int	d_rpm;			/* revolutions/minute */
73 	int	d_badsectforw;		/* supports DEC bad144 std */
74 	int	d_sectoffset;		/* use sect rather than cyl offsets */
75 	int	d_npartitions;		/* number of partitions */
76 	int	d_interleave;
77 	int	d_trackskew;
78 	int	d_cylskew;
79 	int	d_headswitch;
103 struct disktab *getdisktabbyname (const char *);  argument