251 lines
3.4 KiB
HTML
251 lines
3.4 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML
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><HEAD
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><TITLE
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>sr driver</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
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REL="HOME"
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TITLE="The Linux 2.4 SCSI subsystem HOWTO"
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HREF="index.html"><LINK
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REL="UP"
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TITLE="Compile options and System calls including ioctls"
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HREF="compileopt.html"><LINK
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REL="PREVIOUS"
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TITLE="sd driver"
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HREF="cosd.html"><LINK
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REL="NEXT"
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TITLE="st driver"
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HREF="cost.html"></HEAD
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><BODY
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CLASS="sect1"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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LINK="#0000FF"
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VLINK="#840084"
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ALINK="#0000FF"
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><DIV
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SUMMARY="Header navigation table"
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BORDER="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>The Linux 2.4 SCSI subsystem HOWTO</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="cosd.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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>Appendix E. Compile options and System calls including ioctls</TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="cost.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="sect1"
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><H1
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CLASS="sect1"
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><A
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NAME="cosr"
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></A
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>E.3. sr driver</H1
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><P
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> </P
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><DIV
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CLASS="sect2"
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><H2
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CLASS="sect2"
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><A
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NAME="cosrco"
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></A
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>E.3.1. sr compile options</H2
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><P
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> None.
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</P
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></DIV
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><DIV
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CLASS="sect2"
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><H2
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CLASS="sect2"
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><A
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NAME="cosrio"
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></A
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>E.3.2. sr ioctls and user interface</H2
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><P
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> See the following files:
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<TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="programlisting"
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> /usr/src/linux/include/linux/cdrom.h
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/usr/src/linux/drivers/cdrom/cdrom.c [revision history section]
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/usr/src/linux/Documentation/cdrom/cdrom-standard.tex
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</PRE
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></FONT
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></TD
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></TR
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></TABLE
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>
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</P
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><P
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> Some of the following ioctls are described in cdrom-standard.tex :
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<TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="programlisting"
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> CDROMCLOSETRAY
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CDROM_SET_OPTIONS
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CDROM_CLEAR_OPTIONS
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CDROM_SELECT_SPEED
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CDROM_SELECT_DISC
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CDROM_MEDIA_CHANGED
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CDROM_DRIVE_STATUS
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CDROM_CHANGER_NSLOTS
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CDROM_LOCKDOOR
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CDROM_DEBUG
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CDROM_GET_CAPABILITY
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DVD_READ_STRUCT
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DVD_WRITE_STRUCT
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DVD_AUTH
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CDROM_SEND_PACKET
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CDROM_NEXT_WRITABLE
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CDROM_LAST_WRITTEN
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</PRE
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></FONT
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></TD
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></TR
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></TABLE
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>
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</P
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><P
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> The O_NONBLOCK flag on the open() of scd devices is important. Without it the
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open() will wait until there is media in the device before returning.
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<TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="programlisting"
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>
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open() O_NONBLOCK
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close()
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read()
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write()
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ioctl()
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</PRE
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></FONT
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></TD
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></TR
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></TABLE
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>
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</P
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></DIV
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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HREF="cosd.html"
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>Prev</A
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HREF="index.html"
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>Home</A
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HREF="cost.html"
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>Next</A
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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>sd driver</TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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>st driver</TD
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> |