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authorLudovic Courtès <ludo@gnu.org>2011-02-14 11:36:25 +0100
committerLudovic Courtès <ludo@gnu.org>2011-02-14 11:36:25 +0100
commit49114fd43de833c0724fbb0b6dc9ca639d1ab74f (patch)
treebd33e1612cbbc37218ff18a229ff603018d2d5d5 /lib/recvfrom.c
parentd9a00aa53612b97b11847cfc03647a3ab54b2a48 (diff)
downloadguile-49114fd43de833c0724fbb0b6dc9ca639d1ab74f.tar.gz
Update Gnulib; add new modules.
This updates Gnulib to v0.0-4889-ge375fe3. * m4/gnulib-cache.m4: Add `accept', `bind', `close', `connect', `getpeername', `getsockname', `getsockopt', `listen', `malloc', `malloca', `recv', `recvfrom', `send', `sendto', `setsockopt', `shutdown', `socket', and `sockets', requested by Jan Nieuwenhuizen <janneke-list@xs4all.nl> for cross-MinGW32 builds. Add `trunc', requested by Mark H Weaver <mhw@netris.org>.
Diffstat (limited to 'lib/recvfrom.c')
-rw-r--r--lib/recvfrom.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/lib/recvfrom.c b/lib/recvfrom.c
new file mode 100644
index 000000000..068f5a576
--- /dev/null
+++ b/lib/recvfrom.c
@@ -0,0 +1,48 @@
+/* recvfrom.c --- wrappers for Windows recvfrom function
+
+ Copyright (C) 2008-2011 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 Paolo Bonzini */
+
+#include <config.h>
+
+#define WIN32_LEAN_AND_MEAN
+/* Get winsock2.h. */
+#include <sys/socket.h>
+
+/* Get set_winsock_errno, FD_TO_SOCKET etc. */
+#include "w32sock.h"
+
+#undef recvfrom
+
+ssize_t
+rpl_recvfrom (int fd, void *buf, size_t len, int flags, struct sockaddr *from,
+ socklen_t *fromlen)
+{
+ int frombufsize = (from != NULL ? *fromlen : 0);
+ SOCKET sock = FD_TO_SOCKET (fd);
+ int r = recvfrom (sock, buf, len, flags, from, fromlen);
+
+ if (r < 0)
+ set_winsock_errno ();
+
+ /* Winsock recvfrom() only returns a valid 'from' when the socket is
+ connectionless. POSIX gives a valid 'from' for all types of sockets. */
+ else if (from != NULL && *fromlen == frombufsize)
+ rpl_getpeername (fd, from, fromlen);
+
+ return r;
+}