Compex Systems Advanced SerialRAID Adapters SA33-3285-02 - Manual (Page 304)

u0.scsi.cdb_length
Set by the caller to indicate the length of the CDB.
u0.scsi.scsi_status
Contains the SCSI status that is returned for the command.
The device driver does not know the contents of the CDB. The driver only passes on
the CDB to the hardware. See the relevant hardware documentation to determine what
CDBs are valid for a particular SSA physical disk.
Return Values
If the command was successfully sent to the adapter card, this operation returns a
value of 0. Otherwise, it returns a value of -1, and sets the errno global variable set to
one of the following values:
EIO Either an unrecoverable I/O error has occurred, or the hardware did not
recognize the SCSI command as valid.
EINVAL
Either the u0.scsi.cdb_length field in the ssadisk_ioctl_parms structure was
set to a length that is not valid, or the u0.scsi.direction field in the
ssadisk_ioctl_parms structure was set to a value that is not valid.
EPERM
The caller did not have an effective user ID (EUID) of 0.
ENOMEM
The device driver was unable to allocate or pin enough memory to complete
the operation.
If the return code is 0, the result field of the ssadisk_ioctl_parms structure is valid.
The return code indicates whether the adapter was able to process the command
successfully.
Files
/dev/pdisk0, /dev/pdisk1, ..., /dev/pdiskn
Provide an interface to allow SSA device drivers to access physical SSA disks.
/dev/hdisk0, /dev/hdisk1,..., /dev/hdiskn
Provide an interface to allow SSA device drivers to access logical SSA disks.
284 User’s Guide and Maintenance Information