2000-02-18 03:39:52 +08:00
|
|
|
/*
|
|
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
|
|
|
* All rights reserved.
|
|
|
|
*
|
|
|
|
* Redistribution and use in source and binary forms are permitted
|
|
|
|
* provided that the above copyright notice and this paragraph are
|
|
|
|
* duplicated in all such forms and that any documentation,
|
|
|
|
* advertising materials, and other materials related to such
|
|
|
|
* distribution and use acknowledge that the software was developed
|
|
|
|
* by the University of California, Berkeley. The name of the
|
|
|
|
* University may not be used to endorse or promote products derived
|
|
|
|
* from this software without specific prior written permission.
|
|
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
|
|
|
|
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
|
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
FUNCTION
|
|
|
|
<<setbuf>>---specify full buffering for a file or stream
|
|
|
|
|
|
|
|
INDEX
|
|
|
|
setbuf
|
|
|
|
|
|
|
|
ANSI_SYNOPSIS
|
|
|
|
#include <stdio.h>
|
|
|
|
void setbuf(FILE *<[fp]>, char *<[buf]>);
|
|
|
|
|
|
|
|
TRAD_SYNOPSIS
|
|
|
|
#include <stdio.h>
|
|
|
|
void setbuf(<[fp]>, <[buf]>)
|
|
|
|
FILE *<[fp]>;
|
|
|
|
char *<[buf]>;
|
|
|
|
|
|
|
|
DESCRIPTION
|
|
|
|
<<setbuf>> specifies that output to the file or stream identified by <[fp]>
|
|
|
|
should be fully buffered. All output for this file will go to a
|
|
|
|
buffer (of size <<BUFSIZ>>, specified in `<<stdio.h>>'). Output will
|
|
|
|
be passed on to the host system only when the buffer is full, or when
|
|
|
|
an input operation intervenes.
|
|
|
|
|
|
|
|
You may, if you wish, supply your own buffer by passing a pointer to
|
|
|
|
it as the argument <[buf]>. It must have size <<BUFSIZ>>. You can
|
|
|
|
also use <<NULL>> as the value of <[buf]>, to signal that the
|
|
|
|
<<setbuf>> function is to allocate the buffer.
|
|
|
|
|
|
|
|
WARNINGS
|
|
|
|
You may only use <<setbuf>> before performing any file operation other
|
|
|
|
than opening the file.
|
|
|
|
|
|
|
|
If you supply a non-null <[buf]>, you must ensure that the associated
|
|
|
|
storage continues to be available until you close the stream
|
|
|
|
identified by <[fp]>.
|
|
|
|
|
|
|
|
RETURNS
|
|
|
|
<<setbuf>> does not return a result.
|
|
|
|
|
|
|
|
PORTABILITY
|
|
|
|
Both ANSI C and the System V Interface Definition (Issue 2) require
|
|
|
|
<<setbuf>>. However, they differ on the meaning of a <<NULL>> buffer
|
|
|
|
pointer: the SVID issue 2 specification says that a <<NULL>> buffer
|
|
|
|
pointer requests unbuffered output. For maximum portability, avoid
|
|
|
|
<<NULL>> buffer pointers.
|
|
|
|
|
|
|
|
Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
|
|
|
|
<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <_ansi.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
#include "local.h"
|
|
|
|
|
2004-04-23 Artem B. Bityuckiy <abitytsky@softminecorp.com>
* libc/stdio/asprintf.c libc/stdio/clearerr.c,
libc/stdio/fclose.c libc/stdio/fcloseall.c libc/stdio/fdopen.c,
libc/stdio/feof.c libc/stdio/ferror.c libc/stdio/fflush.c,
libc/stdio/fgetc.c libc/stdio/fgetpos.c libc/stdio/fgets.c,
libc/stdio/fileno.c libc/stdio/findfp.c libc/stdio/fiprintf.c,
libc/stdio/flags.c libc/stdio/fopen.c libc/stdio/fprintf.c,
libc/stdio/fputc.c libc/stdio/fputs.c libc/stdio/fread.c,
libc/stdio/freopen.c libc/stdio/fscanf.c libc/stdio/fseek.c,
libc/stdio/fseeko.c libc/stdio/fsetpos.c libc/stdio/ftell.c,
libc/stdio/ftello.c libc/stdio/fvwrite.c libc/stdio/fwalk.c,
libc/stdio/fwrite.c libc/stdio/getc.c libc/stdio/getc_u.c,
libc/stdio/getchar.c libc/stdio/getchar_u.c,
libc/stdio/getdelim.c libc/stdio/getline.c libc/stdio/gets.c,
libc/stdio/getw.c libc/stdio/iprintf.c libc/stdio/local.h,
libc/stdio/makebuf.c libc/stdio/mktemp.c libc/stdio/perror.c,
libc/stdio/printf.c libc/stdio/putc.c libc/stdio/putc_u.c,
libc/stdio/putchar.c libc/stdio/putchar_u.c libc/stdio/puts.c,
libc/stdio/putw.c libc/stdio/refill.c libc/stdio/remove.c,
libc/stdio/rename.c libc/stdio/rewind.c libc/stdio/rget.c,
libc/stdio/scanf.c libc/stdio/setbuf.c libc/stdio/setbuffer.c,
libc/stdio/setlinebuf.c libc/stdio/setvbuf.c,
libc/stdio/siprintf.c libc/stdio/snprintf.c,
libc/stdio/sprintf.c libc/stdio/sscanf.c libc/stdio/stdio.c,
libc/stdio/tmpfile.c libc/stdio/tmpnam.c libc/stdio/ungetc.c,
libc/stdio/vasprintf.c libc/stdio/vfieeefp.h,
libc/stdio/vfprintf.c libc/stdio/vfscanf.c,
libc/stdio/vprintf.c libc/stdio/vscanf.c,
libc/stdio/vsnprintf.c libc/stdio/vsprintf.c,
libc/stdio/vsscanf.c libc/stdio/wbuf.c,
libc/stdio/wsetup.c: Perform minor formatting changes. Move
copyright notices to top of file, ensure that <_ansi.h> is
included, be consistent with open parentheses, use _DEFUN macro,
include "local.h" where needed, and remove various compiler
warnings.
2004-04-24 04:01:55 +08:00
|
|
|
_VOID
|
|
|
|
_DEFUN(setbuf, (fp, buf),
|
|
|
|
FILE * fp _AND
|
|
|
|
char *buf)
|
2000-02-18 03:39:52 +08:00
|
|
|
{
|
2004-04-23 Artem B. Bityuckiy <abitytsky@softminecorp.com>
* libc/stdio/asprintf.c libc/stdio/clearerr.c,
libc/stdio/fclose.c libc/stdio/fcloseall.c libc/stdio/fdopen.c,
libc/stdio/feof.c libc/stdio/ferror.c libc/stdio/fflush.c,
libc/stdio/fgetc.c libc/stdio/fgetpos.c libc/stdio/fgets.c,
libc/stdio/fileno.c libc/stdio/findfp.c libc/stdio/fiprintf.c,
libc/stdio/flags.c libc/stdio/fopen.c libc/stdio/fprintf.c,
libc/stdio/fputc.c libc/stdio/fputs.c libc/stdio/fread.c,
libc/stdio/freopen.c libc/stdio/fscanf.c libc/stdio/fseek.c,
libc/stdio/fseeko.c libc/stdio/fsetpos.c libc/stdio/ftell.c,
libc/stdio/ftello.c libc/stdio/fvwrite.c libc/stdio/fwalk.c,
libc/stdio/fwrite.c libc/stdio/getc.c libc/stdio/getc_u.c,
libc/stdio/getchar.c libc/stdio/getchar_u.c,
libc/stdio/getdelim.c libc/stdio/getline.c libc/stdio/gets.c,
libc/stdio/getw.c libc/stdio/iprintf.c libc/stdio/local.h,
libc/stdio/makebuf.c libc/stdio/mktemp.c libc/stdio/perror.c,
libc/stdio/printf.c libc/stdio/putc.c libc/stdio/putc_u.c,
libc/stdio/putchar.c libc/stdio/putchar_u.c libc/stdio/puts.c,
libc/stdio/putw.c libc/stdio/refill.c libc/stdio/remove.c,
libc/stdio/rename.c libc/stdio/rewind.c libc/stdio/rget.c,
libc/stdio/scanf.c libc/stdio/setbuf.c libc/stdio/setbuffer.c,
libc/stdio/setlinebuf.c libc/stdio/setvbuf.c,
libc/stdio/siprintf.c libc/stdio/snprintf.c,
libc/stdio/sprintf.c libc/stdio/sscanf.c libc/stdio/stdio.c,
libc/stdio/tmpfile.c libc/stdio/tmpnam.c libc/stdio/ungetc.c,
libc/stdio/vasprintf.c libc/stdio/vfieeefp.h,
libc/stdio/vfprintf.c libc/stdio/vfscanf.c,
libc/stdio/vprintf.c libc/stdio/vscanf.c,
libc/stdio/vsnprintf.c libc/stdio/vsprintf.c,
libc/stdio/vsscanf.c libc/stdio/wbuf.c,
libc/stdio/wsetup.c: Perform minor formatting changes. Move
copyright notices to top of file, ensure that <_ansi.h> is
included, be consistent with open parentheses, use _DEFUN macro,
include "local.h" where needed, and remove various compiler
warnings.
2004-04-24 04:01:55 +08:00
|
|
|
_CAST_VOID setvbuf (fp, buf, buf ? _IOFBF : _IONBF, BUFSIZ);
|
2000-02-18 03:39:52 +08:00
|
|
|
}
|