Add Socket Libraries.

Add Posix functions for porting compatibility.
Fix compliance issues with ISO/IEC 9899:199409
New Functions:
  setenv(), fparseln(), GetFileNameFromPath(), rename(),
  realpath(), setprogname(), getprogname(), strlcat(), strlcpy(),
  strsep(), setitimer(), getitimer(), timegm(), getopt(), basename(),
  mkstemp(), ffs(), vsnprintf(), snprintf(), getpass(), usleep(), select(),
  writev(), strcasecmp(), getcwd(), chdir(), tcgetpgrp(), getpgrp(), gettimeofday(),
  bcopy(), 


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12061 6f19259b-4bc3-4df7-8a09-765794883524

StdLib/BsdSocketLib/recv.c

@@ -0,0 +1,63 @@
+/** @file
+  Implement the recv API.
+
+  Copyright (c) 2011, Intel Corporation
+  All rights reserved. This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <SocketInternals.h>
+
+
+/**
+  Receive data from a network connection.
+
+  The ::recv routine waits for receive data from a remote network
+  connection.  The
+  <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/recv.html">POSIX</a>
+  documentation is available online.
+
+  @param [in] s         Socket file descriptor returned from ::socket.
+
+  @param [in] buffer    Address of a buffer to receive the data.
+  
+  @param [in] length    Length of the buffer in bytes.
+
+  @param [in] flags     Message control flags
+
+  @returns    ::recv returns the number of valid bytes in the buffer,
+              zero if no data was received, and -1 when an error occurs.
+              In the case of an error, errno contains more details.
+
+ **/
+ssize_t
+recv (
+  int s,
+  void * buffer,
+  size_t length,
+  int flags
+  )
+{
+  ssize_t BytesRead;
+  
+  //
+  //  Receive the data from the remote system
+  //
+  BytesRead = recvfrom ( s,
+                         buffer,
+                         length,
+                         flags,
+                         NULL,
+                         NULL );
+
+  //
+  //  Return the number of bytes read
+  //
+  return BytesRead;
+}