1 /*
2 Copyright 2021 Northern.tech AS
3
4 This file is part of CFEngine 3 - written and maintained by Northern.tech AS.
5
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; version 3.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
18
19 To the extent this program is licensed as part of the Enterprise
20 versions of CFEngine, the applicable Commercial Open Source License
21 (COSL) may apply to this file if you as a licensee so wish it. See
22 included file COSL.txt.
23 */
24
25 #ifdef HAVE_CONFIG_H
26 # include <config.h>
27 #endif
28
29 #include <stdio.h>
30
31 #if !HAVE_DECL_SETLINEBUF
32 void setlinebuf(FILE *stream);
33 #endif
34
35 #ifdef _WIN32
36 /*
37 Line buffered mode doesn't work on Windows, as documented here:
38 https://msdn.microsoft.com/en-us/library/86cebhfs.aspx (setvbuf)
39 It will fall back to block buffering, so in that case it is better to select
40 no buffering.
41 */
42 # define IO_MODE _IONBF
43 #else
44 # define IO_MODE _IOLBF
45 #endif
46
setlinebuf(FILE * stream)47 void setlinebuf(FILE *stream)
48 {
49 setvbuf(stream, (char *) NULL, IO_MODE, 0);
50 }
51