1/*
2   Unix SMB/CIFS implementation.
3   Samba utility functions
4   Copyright (C) Andrew Tridgell 1992-1998
5   Copyright (C) Jeremy Allison 2001-2002
6   Copyright (C) Simo Sorce 2001
7   Copyright (C) Jim McDonough (jmcd@us.ibm.com)  2003.
8   Copyright (C) James J Myers 2003
9
10   This program is free software; you can redistribute it and/or modify
11   it under the terms of the GNU General Public License as published by
12   the Free Software Foundation; either version 3 of the License, or
13   (at your option) any later version.
14
15   This program is distributed in the hope that it will be useful,
16   but WITHOUT ANY WARRANTY; without even the implied warranty of
17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18   GNU General Public License for more details.
19
20   You should have received a copy of the GNU General Public License
21   along with this program.  If not, see <http://www.gnu.org/licenses/>.
22*/
23
24#include "includes.h"
25#include "system/network.h"
26#include "system/filesys.h"
27#include "system/locale.h"
28#undef malloc
29#undef strcasecmp
30#undef strncasecmp
31#undef strdup
32#undef realloc
33
34/**
35 Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available,
36 else
37  if SYSV use O_NDELAY
38  if BSD use FNDELAY
39**/
40
41_PUBLIC_ int set_blocking(int fd, bool set)
42{
43	int val;
44#ifdef O_NONBLOCK
45#define FLAG_TO_SET O_NONBLOCK
46#else
47#ifdef SYSV
48#define FLAG_TO_SET O_NDELAY
49#else /* BSD */
50#define FLAG_TO_SET FNDELAY
51#endif
52#endif
53
54	if((val = fcntl(fd, F_GETFL, 0)) == -1)
55		return -1;
56	if(set) /* Turn blocking on - ie. clear nonblock flag */
57		val &= ~FLAG_TO_SET;
58	else
59		val |= FLAG_TO_SET;
60	return fcntl( fd, F_SETFL, val);
61#undef FLAG_TO_SET
62}
63