E.2. sd driver

E.2.1. sd compile options

MAX_RETRIES {5} SD_TIMEOUT {30 seconds} SD_MOD_TIMEOUT {75 seconds}

E.2.2. sd ioctls and user interface

The relevant files to see:

include/linux/hdreg.h include/linux/genhd.h include/linux/fs.h

A list of ioctl()s follow:

HDIO_GETGEO_BIG HDIO_GETGEO [retrieve disk geometry] BLKGETSIZE [number of sectors in device] BLKROSET [set read only flag] BLKROGET [get read only flag] BLKRASET [set read ahead value] BLKRAGET [get read ahead value] BLKFLSBUF [instructs SCSI subsystem to flush buffers] BLKSSZGET [get device block size] BLKPG [partition table manipulation] BLKELVGET [get elevator parameters] BLKELVSET [set elevator parameters] BLKRRPART [reread the partition table] open() (all flags ignored) close() ioctl() (see list above)