Oracle Solaris disk drivers need to support a minimum set of ioctl commands specific to Oracle Solaris disk drivers. These I/O controls are specified in the dkio(7I) manual page. Disk I/O controls transfer disk information to or from the device driver. An Oracle Solaris disk device is supported by disk utility commands such as format(1M) and newfs(1M). The mandatory Sun disk I/O controls are as follows:
Returns information that describes the disk controller
Returns a disk's partition map
Sets a disk's partition map
Returns a disk's geometry
Sets a disk's geometry
Returns a disk's Volume Table of Contents
Sets a disk's Volume Table of Contents