centos man page for scsi_eh_prep_cmnd

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@hansenpartnership.com>
	   Author.

       Rob Landley <rob@landley.net>
	   Author.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						      SCSI_EH_PREP_CMND(9)