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+<HTML
+><HEAD
+><TITLE
+>Input and Output [POSIX Section 6]</TITLE
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+NAME="GENERATOR"
+CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
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+TITLE="eCos Reference Manual"
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+REL="UP"
+TITLE="POSIX Standard Support"
+HREF="posix-standard-support.html"><LINK
+REL="PREVIOUS"
+TITLE="Files and Directories [POSIX Section 5]"
+HREF="posix-files-and-directories.html"><LINK
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+TITLE="Device and Class Specific Functions [POSIX Section 7]"
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+COLSPAN="3"
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+>eCos Reference Manual</TH
+></TR
+><TR
+><TD
+WIDTH="10%"
+ALIGN="left"
+VALIGN="bottom"
+><A
+HREF="posix-files-and-directories.html"
+ACCESSKEY="P"
+>Prev</A
+></TD
+><TD
+WIDTH="80%"
+ALIGN="center"
+VALIGN="bottom"
+>Chapter 31. POSIX Standard Support</TD
+><TD
+WIDTH="10%"
+ALIGN="right"
+VALIGN="bottom"
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+HREF="posix-device-and-class-specific-functions.html"
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+>Next</A
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+><DIV
+CLASS="SECT1"
+><H1
+CLASS="SECT1"
+><A
+NAME="POSIX-INPUT-AND-OUTPUT">Input and Output [POSIX Section 6]</H1
+><DIV
+CLASS="SECT2"
+><H2
+CLASS="SECT2"
+><A
+NAME="AEN13062">Functions Implemented</H2
+><TABLE
+BORDER="5"
+BGCOLOR="#E0E0F0"
+WIDTH="70%"
+><TR
+><TD
+><PRE
+CLASS="SCREEN"
+>int dup( int fd );
+int dup2( int fd, int fd2 );
+int close(int fd);
+ssize_t read(int fd, void *buf, size_t nbyte);
+ssize_t write(int fd, const void *buf, size_t nbyte);
+int fcntl( int fd, int cmd, ... );
+off_t lseek(int fd, off_t offset, int whence);
+int fsync( int fd );
+int fdatasync( int fd );</PRE
+></TD
+></TR
+></TABLE
+></DIV
+><DIV
+CLASS="SECT2"
+><H2
+CLASS="SECT2"
+><A
+NAME="AEN13065">Functions Omitted</H2
+><TABLE
+BORDER="5"
+BGCOLOR="#E0E0F0"
+WIDTH="70%"
+><TR
+><TD
+><PRE
+CLASS="SCREEN"
+>int pipe( int fildes[2] );
+int aio_read( struct aiocb *aiocbp ); // TBA
+int aio_write( struct aiocb *aiocbp ); // TBA
+int lio_listio( int mode, struct aiocb *const list[],
+ int nent, struct sigevent *sig); // TBA
+int aio_error( struct aiocb *aiocbp ); // TBA
+int aio_return( struct aiocb *aiocbp ); // TBA
+int aio_cancel( int fd, struct aiocb *aiocbp ); // TBA
+int aio_suspend( const struct aiocb *const list[],
+ int nent, const struct timespec *timeout ); // TBA
+int aio_fsync( int op, struct aiocb *aiocbp );
+// TBA</PRE
+></TD
+></TR
+></TABLE
+></DIV
+><DIV
+CLASS="SECT2"
+><H2
+CLASS="SECT2"
+><A
+NAME="AEN13068">Notes</H2
+><P
+></P
+><UL
+><LI
+><P
+> Only the <SPAN
+CLASS="emphasis"
+><I
+CLASS="EMPHASIS"
+>F_DUPFD</I
+></SPAN
+> command
+ of <SPAN
+CLASS="emphasis"
+><I
+CLASS="EMPHASIS"
+>fcntl()</I
+></SPAN
+> is currently implemented.
+ </P
+></LI
+><LI
+><P
+> Most of the functionality of these functions depends on
+ the underlying filesystem.
+ </P
+></LI
+></UL
+></DIV
+></DIV
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+WIDTH="33%"
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+>Files and Directories [POSIX Section 5]</TD
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+WIDTH="34%"
+ALIGN="center"
+VALIGN="top"
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+HREF="posix-standard-support.html"
+ACCESSKEY="U"
+>Up</A
+></TD
+><TD
+WIDTH="33%"
+ALIGN="right"
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+>Device and Class Specific Functions [POSIX Section 7]</TD
+></TR
+></TABLE
+></DIV
+></BODY
+></HTML
+>
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