o dev_status The dev_status is the address of a dev_status_t
structure. The fields in this structure are examined to map a
SCSI error to an MRD_STATUS code.
o os_status The os_status is an operating system specific
failure code that is used to find the matching MRD_STATUS
code.
o log_info The log_info is a character array that should be at
least MRD_MAX_LOG_STRING in length. On returning, it contains
the operating system status.