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1 | /* recvfrom.c --- wrappers for Windows recvfrom function |
2 | ||
f0007cad | 3 | Copyright (C) 2008-2012 Free Software Foundation, Inc. |
49114fd4 LC |
4 | |
5 | This program is free software: you can redistribute it and/or modify | |
6 | it under the terms of the GNU Lesser General Public License as published by | |
7 | the Free Software Foundation; either version 3 of the License, or | |
8 | (at your option) any later version. | |
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 Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public License | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | /* Written by Paolo Bonzini */ | |
19 | ||
20 | #include <config.h> | |
21 | ||
22 | #define WIN32_LEAN_AND_MEAN | |
23 | /* Get winsock2.h. */ | |
24 | #include <sys/socket.h> | |
25 | ||
26 | /* Get set_winsock_errno, FD_TO_SOCKET etc. */ | |
27 | #include "w32sock.h" | |
28 | ||
29 | #undef recvfrom | |
30 | ||
31 | ssize_t | |
32 | rpl_recvfrom (int fd, void *buf, size_t len, int flags, struct sockaddr *from, | |
33 | socklen_t *fromlen) | |
34 | { | |
49114fd4 | 35 | SOCKET sock = FD_TO_SOCKET (fd); |
49114fd4 | 36 | |
35428fb6 LC |
37 | if (sock == INVALID_SOCKET) |
38 | { | |
39 | errno = EBADF; | |
40 | return -1; | |
41 | } | |
42 | else | |
43 | { | |
44 | int frombufsize = (from != NULL ? *fromlen : 0); | |
45 | int r = recvfrom (sock, buf, len, flags, from, fromlen); | |
46 | ||
47 | if (r < 0) | |
48 | set_winsock_errno (); | |
49 | ||
50 | /* Winsock recvfrom() only returns a valid 'from' when the socket is | |
51 | connectionless. POSIX gives a valid 'from' for all types of | |
52 | sockets. */ | |
53 | else if (from != NULL && *fromlen == frombufsize) | |
54 | rpl_getpeername (fd, from, fromlen); | |
55 | ||
56 | return r; | |
57 | } | |
49114fd4 | 58 | } |