URL
https://opencores.org/ocsvn/or1k_old/or1k_old/trunk
Subversion Repositories or1k_old
[/] [or1k_old/] [trunk/] [ecos-2.0/] [doc/] [html/] [ref/] [posix-files-and-directories.html] - Rev 1782
Compare with Previous | Blame | View Log
<!-- Copyright (C) 2003 Red Hat, Inc. -->
<!-- This material may be distributed only subject to the terms -->
<!-- and conditions set forth in the Open Publication License, v1.0 -->
<!-- or later (the latest version is presently available at -->
<!-- http://www.opencontent.org/openpub/). -->
<!-- Distribution of the work or derivative of the work in any -->
<!-- standard (paper) book form is prohibited unless prior -->
<!-- permission is obtained from the copyright holder. -->
<HTML
><HEAD
><TITLE
>Files and Directories [POSIX Section 5]</TITLE
><meta name="MSSmartTagsPreventParsing" content="TRUE">
<META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
REL="HOME"
TITLE="eCos Reference Manual"
HREF="ecos-ref.html"><LINK
REL="UP"
TITLE="POSIX Standard Support"
HREF="posix-standard-support.html"><LINK
REL="PREVIOUS"
TITLE="Process Environment [POSIX Section 4]"
HREF="posix-process-environment.html"><LINK
REL="NEXT"
TITLE="Input and Output [POSIX Section 6]"
HREF="posix-input-and-output.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"
>eCos Reference Manual</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="posix-process-environment.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"
><A
HREF="posix-input-and-output.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="POSIX-FILES-AND-DIRECTORIES">Files and Directories [POSIX Section 5]</H1
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN13039">Functions Implemented</H2
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>DIR *opendir( const char *dirname );
struct dirent *readdir( DIR *dirp );
int readdir_r( DIR *dirp, struct dirent *entry,
struct dirent **result );
void rewinddir( DIR *dirp );
int closedir( DIR *dirp );
int chdir( const char *path );
char *getcwd( char *buf, size_t size );
int open( const char * path , int oflag , ... );
int creat( const char * path, mode_t mode );
int link( const char *existing, const char *new );
int mkdir( const char *path, mode_t mode );
int unlink( const char *path );
int rmdir( const char *path );
int rename( const char *old, const char *new );
int stat( const char *path, struct stat *buf );
int fstat( int fd, struct stat *buf );
int access( const char *path, int amode );
long pathconf(const char *path, int name);
long fpathconf(int fd, int name);</PRE
></TD
></TR
></TABLE
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN13042">Functions Omitted</H2
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="SCREEN"
>mode_t umask( mode_t cmask );
int mkfifo( const char *path, mode_t mode );
int chmod( const char *path, mode_t mode ); // TBA
int fchmod( int fd, mode_t mode ); // TBA
int chown( const char *path, uid_t owner, gid_t group );
int utime( const char *path, const struct utimbuf *times ); // TBA
int ftruncate( int fd, off_t length ); // TBA</PRE
></TD
></TR
></TABLE
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN13045">Notes</H2
><P
></P
><UL
><LI
><P
> If a call to <TT
CLASS="FUNCTION"
>open()</TT
> or <TT
CLASS="FUNCTION"
>creat()</TT
> supplies
the third _mode_ parameter, it will
currently be ignored.
</P
></LI
><LI
><P
> Most of the functionality of these functions depends on
the underlying filesystem.
</P
></LI
><LI
><P
> Currently<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
> access()</I
></SPAN
> only checks the
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>F_OK</I
></SPAN
> mode explicitly, the others are
all assumed to be true by default.
</P
></LI
><LI
><P
> The maximum number of open files allowed is supplied by
the CYGNUM_FILEIO_NFILE option. The maximum number
of file descriptors is supplied by the CYGNUM_FILEIO_NFD
option.
</P
></LI
></UL
></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="posix-process-environment.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="ecos-ref.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="posix-input-and-output.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Process Environment [POSIX Section 4]</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="posix-standard-support.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Input and Output [POSIX Section 6]</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>