Subversion Repositories Kolibri OS

Rev

Details | Last modification | View Log | RSS feed

Rev Author Line No. Line
6536 serge 1 
/*
2 
 * Copyright (c) 1990 The Regents of the University of California.
3 
 * All rights reserved.
4 
 *
5 
 * Redistribution and use in source and binary forms are permitted
6 
 * provided that the above copyright notice and this paragraph are
7 
 * duplicated in all such forms and that any documentation,
8 
 * advertising materials, and other materials related to such
9 
 * distribution and use acknowledge that the software was developed
10 
 * by the University of California, Berkeley.  The name of the
11 
 * University may not be used to endorse or promote products derived
12 
 * from this software without specific prior written permission.
13 
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14 
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15 
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
16 
 */
17 
 
18 
/*
19 
FUNCTION
20 
<>---specify full buffering for a file or stream
21 
 
22 
INDEX
23 
	setbuf
24 
 
25 
ANSI_SYNOPSIS
26 
	#include
27 
	void setbuf(FILE *<[fp]>, char *<[buf]>);
28 
 
29 
TRAD_SYNOPSIS
30 
	#include
31 
	void setbuf(<[fp]>, <[buf]>)
32 
	FILE *<[fp]>;
33 
	char *<[buf]>;
34 
 
35 
DESCRIPTION
36 
<> specifies that output to the file or stream identified by <[fp]>
37 
should be fully buffered.  All output for this file will go to a
38 
buffer (of size <>, specified in `<>').  Output will
39 
be passed on to the host system only when the buffer is full, or when
40 
an input operation intervenes.
41 
 
42 
You may, if you wish, supply your own buffer by passing a pointer to
43 
it as the argument <[buf]>.  It must have size <>.  You can
44 
also use <> as the value of <[buf]>, to signal that the
45 
<> function is to allocate the buffer.
46 
 
47 
WARNINGS
48 
You may only use <> before performing any file operation other
49 
than opening the file.
50 
 
51 
If you supply a non-null <[buf]>, you must ensure that the associated
52 
storage continues to be available until you close the stream
53 
identified by <[fp]>.
54 
 
55 
RETURNS
56 
<> does not return a result.
57 
 
58 
PORTABILITY
59 
Both ANSI C and the System V Interface Definition (Issue 2) require
60 
<>.  However, they differ on the meaning of a <> buffer
61 
pointer: the SVID issue 2 specification says that a <> buffer
62 
pointer requests unbuffered output.  For maximum portability, avoid
63 
<> buffer pointers.
64 
 
65 
Supporting OS subroutines required: <>, <>, <>,
66 
<>, <>, <>, <>.
67 
*/
68 
 
69 
#include <_ansi.h>
70 
#include
71 
#include "local.h"
72 
 
73 
_VOID
74 
_DEFUN(setbuf, (fp, buf),
75 
       FILE *__restrict fp _AND
76 
       char *__restrict buf)
77 
{
78 
  _CAST_VOID setvbuf (fp, buf, buf ? _IOFBF : _IONBF, BUFSIZ);
79 
}