1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
/*
* OpenVPN -- An application to securely tunnel IP networks
* over a single UDP port, with support for SSL/TLS-based
* session authentication and key exchange,
* packet encryption, packet authentication, and
* packet compression.
*
* Copyright (C) 2002-2017 OpenVPN Technologies, Inc. <sales@openvpn.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#elif defined(_MSC_VER)
#include "config-msvc.h"
#endif
#include "syshead.h"
#include "fdmisc.h"
#include "error.h"
#include "memdbg.h"
/* Set a file descriptor to non-blocking */
bool
set_nonblock_action(int fd)
{
#ifdef _WIN32
u_long arg = 1;
if (ioctlsocket(fd, FIONBIO, &arg))
{
return false;
}
#else /* ifdef _WIN32 */
if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
{
return false;
}
#endif
return true;
}
/* Set a file descriptor to not be passed across execs */
bool
set_cloexec_action(int fd)
{
#ifndef _WIN32
if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
{
return false;
}
#endif
return true;
}
/* Set a file descriptor to non-blocking */
void
set_nonblock(int fd)
{
if (!set_nonblock_action(fd))
{
msg(M_ERR, "Set socket to non-blocking mode failed");
}
}
/* Set a file descriptor to not be passed across execs */
void
set_cloexec(int fd)
{
if (!set_cloexec_action(fd))
{
msg(M_ERR, "Set FD_CLOEXEC flag on file descriptor failed");
}
}
|
