scsicam_bios_param — Determine geometry of a disk in cylinders/heads/sectors.
which device
size of the disk in sectors
return value: ip[0]=heads, ip[1]=sectors, ip[2]=cylinders
determine the BIOS mapping/geometry used for a drive in a SCSI-CAM system, storing the results in ip as required by the HDIO_GETGEO ioctl.
-1 on failure, 0 on success.