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 */
curlx_nonblock(curl_socket_t sockfd,int nonblock)47 int 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