SCSI_EH_PREP_CMND(9)                      SCSI mid layer                     SCSI_EH_PREP_CMND(9)



NAME
       scsi_eh_prep_cmnd - Save a scsi command info as part of error recovery

SYNOPSIS
       void scsi_eh_prep_cmnd(struct scsi_cmnd * scmd, struct scsi_eh_save * ses,
                              unsigned char * cmnd, int cmnd_size, unsigned sense_bytes);

ARGUMENTS
       scmd
           SCSI command structure to hijack

       ses
           structure to save restore information

       cmnd
           CDB to send. Can be NULL if no new cmnd is needed

       cmnd_size
           size in bytes of cmnd (must be <= BLK_MAX_CDB)

       sense_bytes
           size of sense data to copy. or 0 (if != 0 cmnd is ignored)

DESCRIPTION
       This function is used to save a scsi command information before re-execution as part of
       the error recovery process. If sense_bytes is 0 the command sent must be one that does not
       transfer any data. If sense_bytes != 0 cmnd is ignored and this functions sets up a
       REQUEST_SENSE command and cmnd buffers to read sense_bytes into scmd->sense_buffer.

AUTHORS
       James Bottomley <James.Bottomley AT hansenpartnership.com>
           Author.

       Rob Landley <rob AT landley.net>
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                      SCSI_EH_PREP_CMND(9)