1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1985-2010 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                  Common Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*            http://www.opensource.org/licenses/cpl1.0.txt             *
11*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12*                                                                      *
13*              Information and Software Systems Research               *
14*                            AT&T Research                             *
15*                           Florham Park NJ                            *
16*                                                                      *
17*                 Glenn Fowler <gsf@research.att.com>                  *
18*                  David Korn <dgk@research.att.com>                   *
19*                   Phong Vo <kpv@research.att.com>                    *
20*                                                                      *
21***********************************************************************/
22#pragma prototyped
23
24#include "stdhdr.h"
25
26int
27setvbuf(Sfio_t* f, char* buf, int type, size_t size)
28{
29	STDIO_INT(f, "setvbuf", int, (Sfio_t*, char*, int, size_t), (f, buf, type, size))
30
31	if (type == _IOLBF)
32		sfset(f, SF_LINE, 1);
33	else if (f->flags & SF_STRING)
34		return -1;
35	else if (type == _IONBF)
36	{
37		sfsync(f);
38		sfsetbuf(f, NiL, 0);
39	}
40	else if (type == _IOFBF)
41	{
42		if (size == 0)
43			size = SF_BUFSIZE;
44		sfsync(f);
45		sfsetbuf(f, (Void_t*)buf, size);
46	}
47	return 0;
48}
49