1 files changed, 140 insertions, 0 deletions
diff --git a/lib/w32sock.h b/lib/w32sock.h
new file mode 100644
index 0000000..9c23c9d
--- /dev/null
+++ b/lib/w32sock.h
@@ -0,0 +1,140 @@
+/* w32sock.h --- internal auxiliary functions for Windows socket functions
+
+   Copyright (C) 2008-2020 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Paolo Bonzini */
+
+#include <errno.h>
+
+/* Get O_RDWR and O_BINARY.  */
+#include <fcntl.h>
+
+/* Get _open_osfhandle().  */
+#include <io.h>
+
+/* Get _get_osfhandle().  */
+#if GNULIB_MSVC_NOTHROW
+# include "msvc-nothrow.h"
+#else
+# include <io.h>
+#endif
+
+#define FD_TO_SOCKET(fd)   ((SOCKET) _get_osfhandle ((fd)))
+#define SOCKET_TO_FD(fh)   (_open_osfhandle ((intptr_t) (fh), O_RDWR | O_BINARY))
+
+static inline void
+set_winsock_errno (void)
+{
+  int err = WSAGetLastError ();
+
+  /* Map some WSAE* errors to the runtime library's error codes.  */
+  switch (err)
+    {
+    case WSA_INVALID_HANDLE:
+      errno = EBADF;
+      break;
+    case WSA_NOT_ENOUGH_MEMORY:
+      errno = ENOMEM;
+      break;
+    case WSA_INVALID_PARAMETER:
+      errno = EINVAL;
+      break;
+    case WSAENAMETOOLONG:
+      errno = ENAMETOOLONG;
+      break;
+    case WSAENOTEMPTY:
+      errno = ENOTEMPTY;
+      break;
+    case WSAEWOULDBLOCK:
+      errno = EWOULDBLOCK;
+      break;
+    case WSAEINPROGRESS:
+      errno = EINPROGRESS;
+      break;
+    case WSAEALREADY:
+      errno = EALREADY;
+      break;
+    case WSAENOTSOCK:
+      errno = ENOTSOCK;
+      break;
+    case WSAEDESTADDRREQ:
+      errno = EDESTADDRREQ;
+      break;
+    case WSAEMSGSIZE:
+      errno = EMSGSIZE;
+      break;
+    case WSAEPROTOTYPE:
+      errno = EPROTOTYPE;
+      break;
+    case WSAENOPROTOOPT:
+      errno = ENOPROTOOPT;
+      break;
+    case WSAEPROTONOSUPPORT:
+      errno = EPROTONOSUPPORT;
+      break;
+    case WSAEOPNOTSUPP:
+      errno = EOPNOTSUPP;
+      break;
+    case WSAEAFNOSUPPORT:
+      errno = EAFNOSUPPORT;
+      break;
+    case WSAEADDRINUSE:
+      errno = EADDRINUSE;
+      break;
+    case WSAEADDRNOTAVAIL:
+      errno = EADDRNOTAVAIL;
+      break;
+    case WSAENETDOWN:
+      errno = ENETDOWN;
+      break;
+    case WSAENETUNREACH:
+      errno = ENETUNREACH;
+      break;
+    case WSAENETRESET:
+      errno = ENETRESET;
+      break;
+    case WSAECONNABORTED:
+      errno = ECONNABORTED;
+      break;
+    case WSAECONNRESET:
+      errno = ECONNRESET;
+      break;
+    case WSAENOBUFS:
+      errno = ENOBUFS;
+      break;
+    case WSAEISCONN:
+      errno = EISCONN;
+      break;
+    case WSAENOTCONN:
+      errno = ENOTCONN;
+      break;
+    case WSAETIMEDOUT:
+      errno = ETIMEDOUT;
+      break;
+    case WSAECONNREFUSED:
+      errno = ECONNREFUSED;
+      break;
+    case WSAELOOP:
+      errno = ELOOP;
+      break;
+    case WSAEHOSTUNREACH:
+      errno = EHOSTUNREACH;
+      break;
+    default:
+      errno = (err > 10000 && err < 10025) ? err - 10000 : err;
+      break;
+    }
+}