Mercurial > gnulib
annotate lib/getsockopt.c @ 40057:b06060465f09
maint: Run 'make update-copyright'
author | Paul Eggert <eggert@cs.ucla.edu> |
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date | Tue, 01 Jan 2019 00:25:11 +0100 |
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1 /* getsockopt.c --- wrappers for Windows getsockopt function |
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2 |
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3 Copyright (C) 2008-2019 Free Software Foundation, Inc. |
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4 |
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5 This program is free software: you can redistribute it and/or modify |
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6 it under the terms of the GNU General Public License as published by |
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7 the Free Software Foundation; either version 3 of the License, or |
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8 (at your option) any later version. |
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9 |
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10 This program is distributed in the hope that it will be useful, |
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 GNU General Public License for more details. |
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14 |
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15 You should have received a copy of the GNU General Public License |
19190 | 16 along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
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17 |
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18 /* Written by Paolo Bonzini */ |
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19 |
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20 #include <config.h> |
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21 |
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22 #define WIN32_LEAN_AND_MEAN |
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23 /* Get winsock2.h. */ |
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24 #include <sys/socket.h> |
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25 |
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26 /* Get struct timeval. */ |
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27 #include <sys/time.h> |
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28 |
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29 /* Get memcpy. */ |
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30 #include <string.h> |
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31 |
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32 /* Get set_winsock_errno, FD_TO_SOCKET etc. */ |
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33 #include "w32sock.h" |
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34 |
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35 #undef getsockopt |
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36 |
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37 int |
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38 rpl_getsockopt (int fd, int level, int optname, void *optval, socklen_t *optlen) |
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39 { |
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40 SOCKET sock = FD_TO_SOCKET (fd); |
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41 |
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42 if (sock == INVALID_SOCKET) |
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43 { |
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44 errno = EBADF; |
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45 return -1; |
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46 } |
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47 else |
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48 { |
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49 int r; |
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50 |
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51 if (level == SOL_SOCKET |
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52 && (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO)) |
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53 { |
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54 int milliseconds; |
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55 int milliseconds_len = sizeof (int); |
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56 struct timeval tv; |
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57 size_t n; |
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58 |
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59 r = getsockopt (sock, level, optname, (char *) &milliseconds, |
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60 &milliseconds_len); |
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61 tv.tv_sec = milliseconds / 1000; |
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62 tv.tv_usec = (milliseconds - 1000 * tv.tv_sec) * 1000; |
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63 n = sizeof (struct timeval); |
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64 if (n > *optlen) |
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65 n = *optlen; |
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66 memcpy (optval, &tv, n); |
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67 *optlen = n; |
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68 } |
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69 else |
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70 { |
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71 r = getsockopt (sock, level, optname, optval, optlen); |
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72 } |
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73 |
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74 if (r < 0) |
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75 set_winsock_errno (); |
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76 |
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77 return r; |
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78 } |
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79 } |