diff options
author | Ludovic Courtès <ludo@gnu.org> | 2010-12-07 21:43:04 +0100 |
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committer | Ludovic Courtès <ludo@gnu.org> | 2010-12-07 23:13:19 +0100 |
commit | 0f00f2c33a85842a9611ed63f07e915ea9fd60de (patch) | |
tree | a02ec2b230021798eb854693c6c9270c6a1f87e6 /lib/sockets.c | |
parent | cb26e97a88e90d04e6d4efe3de0de92dea53d1e5 (diff) | |
download | guile-0f00f2c33a85842a9611ed63f07e915ea9fd60de.tar.gz |
Use Gnulib's `nproc'.
This updates Gnulib to v0.0-4496-g6491120.
* m4/gnulib-cache.m4: Add `nproc'.
Diffstat (limited to 'lib/sockets.c')
-rw-r--r-- | lib/sockets.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/lib/sockets.c b/lib/sockets.c new file mode 100644 index 000000000..a853c8cce --- /dev/null +++ b/lib/sockets.c @@ -0,0 +1,118 @@ +/* sockets.c --- wrappers for Windows socket functions + + Copyright (C) 2008-2010 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + 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 Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +/* Written by Simon Josefsson */ + +#include <config.h> + +/* Specification. */ +#include "sockets.h" + +#if WINDOWS_SOCKETS + +/* This includes winsock2.h on MinGW. */ +# include <sys/socket.h> + +# include "close-hook.h" + +/* Get set_winsock_errno, FD_TO_SOCKET etc. */ +# include "w32sock.h" + +static int +close_fd_maybe_socket (int fd, const struct close_hook *remaining_list) +{ + SOCKET sock; + WSANETWORKEVENTS ev; + + /* Test whether fd refers to a socket. */ + sock = FD_TO_SOCKET (fd); + ev.lNetworkEvents = 0xDEADBEEF; + WSAEnumNetworkEvents (sock, NULL, &ev); + if (ev.lNetworkEvents != 0xDEADBEEF) + { + /* fd refers to a socket. */ + /* FIXME: other applications, like squid, use an undocumented + _free_osfhnd free function. But this is not enough: The 'osfile' + flags for fd also needs to be cleared, but it is hard to access it. + Instead, here we just close twice the file descriptor. */ + if (closesocket (sock)) + { + set_winsock_errno (); + return -1; + } + else + { + /* This call frees the file descriptor and does a + CloseHandle ((HANDLE) _get_osfhandle (fd)), which fails. */ + _close (fd); + return 0; + } + } + else + /* Some other type of file descriptor. */ + return execute_close_hooks (fd, remaining_list); +} + +static struct close_hook close_sockets_hook; + +static int initialized_sockets_version /* = 0 */; + +#endif /* WINDOWS_SOCKETS */ + +int +gl_sockets_startup (int version _GL_UNUSED) +{ +#if WINDOWS_SOCKETS + if (version > initialized_sockets_version) + { + WSADATA data; + int err; + + err = WSAStartup (version, &data); + if (err != 0) + return 1; + + if (data.wVersion < version) + return 2; + + if (initialized_sockets_version == 0) + register_close_hook (close_fd_maybe_socket, &close_sockets_hook); + + initialized_sockets_version = version; + } +#endif + + return 0; +} + +int +gl_sockets_cleanup (void) +{ +#if WINDOWS_SOCKETS + int err; + + initialized_sockets_version = 0; + + unregister_close_hook (&close_sockets_hook); + + err = WSACleanup (); + if (err != 0) + return 1; +#endif + + return 0; +} |