<HTML ><HEAD ><TITLE >sbp</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="The Linux SCSI Generic (sg) HOWTO" HREF="index.html"><LINK REL="UP" TITLE="The sg_io_hdr_t structure in detail" HREF="sg_io_hdr_t.html"><LINK REL="PREVIOUS" TITLE="cmdp" HREF="x209.html"><LINK REL="NEXT" TITLE="timeout" HREF="x215.html"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >The Linux SCSI Generic (sg) HOWTO</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="x209.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 6. The sg_io_hdr_t structure in detail</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="x215.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="AEN212">6.9. sbp</H1 ><P > This value points to user memory of at least 'mx_sb_len' bytes length where the SCSI sense buffer will be output. Most successful commands do not output a sense buffer and this will be indicated by 'sb_len_wr' being zero. Note that there are error conditions that don't result in a sense buffer be generated. The sense buffer results from the "auto-sense" mechanism in the SCSI mid-level driver. This mechanism detects a CHECK_CONDITION status and issues a REQUEST SENSE command and conveys its response back as the "sense buffer". The type of sbp is unsigned char * .</P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="x209.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="x215.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >cmdp</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="sg_io_hdr_t.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >timeout</TD ></TR ></TABLE ></DIV ></BODY ></HTML >