<HTML ><HEAD ><TITLE >SG_GET_ACCESS_COUNT</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="Ioctl()s" HREF="ioctl.html"><LINK REL="PREVIOUS" TITLE="SG_IO" HREF="sg_io.html"><LINK REL="NEXT" TITLE="SG_SET_COMMAND_Q (and _GET_)" HREF="gs_commandq.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="sg_io.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 8. Ioctl()s</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="gs_commandq.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="G_ACCESS">8.2. SG_GET_ACCESS_COUNT</H1 ><DIV CLASS="FORMALPARA" ><P ><B >SG_GET_ACCESS_COUNT 0x2289. </B >This ioctl() yields the access count maintained by the mid level for this SCSI device. This number is incremented by each open() call done by the upper level SCSI drivers (i.e. sd, sr, st and sg) and decremented by those drivers' release(). [A driver's release() corresponds to the last close() on a file descriptor, or is supplied by the kernel when a process is aborted.] Each SCSI device has a separate access count.</P ></DIV ></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="sg_io.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="gs_commandq.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SG_IO</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ioctl.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SG_SET_COMMAND_Q (and _GET_)</TD ></TR ></TABLE ></DIV ></BODY ></HTML >