1/***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2021, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22
23#include "curl_setup.h"
24
25#ifdef HAVE_SYS_IOCTL_H
26#include <sys/ioctl.h>
27#endif
28#ifdef HAVE_FCNTL_H
29#include <fcntl.h>
30#endif
31
32#if (defined(HAVE_IOCTL_FIONBIO) && defined(NETWARE))
33#include <sys/filio.h>
34#endif
35#ifdef __VMS
36#include <in.h>
37#include <inet.h>
38#endif
39
40#include "nonblock.h"
41
42/*
43 * curlx_nonblock() set the given socket to either blocking or non-blocking
44 * mode based on the 'nonblock' boolean argument. This function is highly
45 * portable.
46 */
47int curlx_nonblock(curl_socket_t sockfd, /* operate on this */
48 int nonblock /* TRUE or FALSE */)
49{
50#if defined(HAVE_FCNTL_O_NONBLOCK)
51 /* most recent unix versions */
52 int flags;
53 flags = sfcntl(sockfd, F_GETFL, 0);
54 if(nonblock)
55 return sfcntl(sockfd, F_SETFL, flags | O_NONBLOCK);
56 return sfcntl(sockfd, F_SETFL, flags & (~O_NONBLOCK));
57
58#elif defined(HAVE_IOCTL_FIONBIO)
59
60 /* older unix versions */
61 int flags = nonblock ? 1 : 0;
62 return ioctl(sockfd, FIONBIO, &flags);
63
64#elif defined(HAVE_IOCTLSOCKET_FIONBIO)
65
66 /* Windows */
67 unsigned long flags = nonblock ? 1UL : 0UL;
68 return ioctlsocket(sockfd, FIONBIO, &flags);
69
70#elif defined(HAVE_IOCTLSOCKET_CAMEL_FIONBIO)
71
72 /* Amiga */
73 long flags = nonblock ? 1L : 0L;
74 return IoctlSocket(sockfd, FIONBIO, (char *)&flags);
75
76#elif defined(HAVE_SETSOCKOPT_SO_NONBLOCK)
77
78 /* BeOS */
79 long b = nonblock ? 1L : 0L;
80 return setsockopt(sockfd, SOL_SOCKET, SO_NONBLOCK, &b, sizeof(b));
81
82#else
83# error "no non-blocking method was found/used/set"
84#endif
85}
86