From ad77420ac761b8a1ab20792ae4dc2f88208776a2 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Sat, 17 Mar 2012 23:02:21 +0100
Subject: [PATCH] lwip: basic checks and macros for compatiblity

---
 lib/nonblock.c   |  8 ++++----
 lib/setup_once.h | 13 ++++++++++++-
 2 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/lib/nonblock.c b/lib/nonblock.c
index 529ce8bca..68ff2f3b5 100644
--- a/lib/nonblock.c
+++ b/lib/nonblock.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -61,11 +61,11 @@ int curlx_nonblock(curl_socket_t sockfd,    /* operate on this */
 
   /* most recent unix versions */
   int flags;
-  flags = fcntl(sockfd, F_GETFL, 0);
+  flags = sfcntl(sockfd, F_GETFL, 0);
   if(nonblock)
-    return fcntl(sockfd, F_SETFL, flags | O_NONBLOCK);
+    return sfcntl(sockfd, F_SETFL, flags | O_NONBLOCK);
   else
-    return fcntl(sockfd, F_SETFL, flags & (~O_NONBLOCK));
+    return sfcntl(sockfd, F_SETFL, flags & (~O_NONBLOCK));
 
 #elif defined(HAVE_IOCTL_FIONBIO)
 
diff --git a/lib/setup_once.h b/lib/setup_once.h
index 8bdb472df..4137f374c 100644
--- a/lib/setup_once.h
+++ b/lib/setup_once.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -239,10 +239,21 @@ struct timeval {
 #  define sclose(x)  closesocket((x))
 #elif defined(HAVE_CLOSESOCKET_CAMEL)
 #  define sclose(x)  CloseSocket((x))
+#elif defined(USE_LWIPSOCK)
+#  define sclose(x)  lwip_close((x))
 #else
 #  define sclose(x)  close((x))
 #endif
 
+/*
+ * Stack-independent version of fcntl() on sockets:
+ */
+#if defined(USE_LWIPSOCK)
+#  define sfcntl  lwip_fcntl
+#else
+#  define sfcntl  fcntl
+#endif
+
 /*
  * Uppercase macro versions of ANSI/ISO is*() functions/macros which
  * avoid negative number inputs with argument byte codes > 127.