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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<HTML
><HEAD
><TITLE
>gfs_pio_truncate</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"></HEAD
><BODY
CLASS="REFENTRY"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><H1
><A
NAME="GFS-PIO-TRUNCATE.3"
></A
>gfs_pio_truncate</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="NAME"
></A
><H2
>Name</H2
>gfs_pio_truncate -- truncate a file to a specified length</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="SYNOPSIS"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN12"
></A
><P
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include <gfarm/gfarm.h></PRE
></TD
></TR
></TABLE
><P
><CODE
><CODE
CLASS="FUNCDEF"
><TT
CLASS="FUNCTION"
><SPAN
CLASS="RETURNVALUE"
>char *</SPAN
>gfs_pio_truncate</TT
></CODE
>(GFS_File <TT
CLASS="PARAMETER"
><I
>gf</I
></TT
>, file_offset_t <TT
CLASS="PARAMETER"
><I
>length</I
></TT
>);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="DESCRIPTION"
></A
><H2
>DESCRIPTION</H2
><P
>The <TT
CLASS="FUNCTION"
>gfs_pio_truncate()</TT
> function truncates the
regular file <TT
CLASS="PARAMETER"
><I
>gf</I
></TT
> to the <TT
CLASS="PARAMETER"
><I
>length</I
></TT
>
bytes.</P
><P
>If the file was previously shorter than the length, it is extended,
and the extended part is filled by zero bytes.</P
><P
>The file pointer is not changed.</P
><P
>You must specify <TT
CLASS="CONSTANT"
>GFS_FILE_MODE_WRITE</TT
> in opening
the file, because it must be open for writing.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="RETURN-VALUES"
></A
><H2
>RETURN VALUES</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="CONSTANT"
>NULL</TT
></DT
><DD
><P
>The function terminated successfully.</P
></DD
><DT
><TT
CLASS="CONSTANT"
>GFARM_ERR_NO_MEMORY</TT
></DT
><DD
><P
>Insufficient memory was available.</P
></DD
><DT
>Others</DT
><DD
><P
>An error except the above occurred. The reason is shown by its
pointed strings.</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="SEE-ALSO"
></A
><H2
>SEE ALSO</H2
><P
><SPAN
CLASS="CITEREFENTRY"
><SPAN
CLASS="REFENTRYTITLE"
>gfs_pio_create</SPAN
>(3)</SPAN
>,
<SPAN
CLASS="CITEREFENTRY"
><SPAN
CLASS="REFENTRYTITLE"
>gfs_pio_open</SPAN
>(3)</SPAN
></P
></DIV
></BODY
></HTML
>
|
