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/getpeername.c

@@ -0,0 +1,73 @@
+/** @file
+  Implement the getpeername 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>
+
+
+/**
+  Get the remote address
+
+  The ::getpeername routine retrieves the remote system address from the socket.
+  The
+  <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/getpeername.html#">POSIX</a>
+  documentation is available online.
+
+  @param [in] s         Socket file descriptor returned from ::socket.
+
+  @param [out] address  Network address to receive the remote system address
+
+  @param [in] address_len Length of the remote network address structure
+
+  @returns    ::getpeername returns zero (0) if successful or -1 when an error occurs.
+              In the case of an error, errno contains more details.
+
+ **/
+int
+getpeername (
+  int s,
+  struct sockaddr * address,
+  socklen_t * address_len
+  )
+{
+  int RetVal;
+  EFI_SOCKET_PROTOCOL * pSocketProtocol;
+  EFI_STATUS Status;
+
+  //
+  //  Assume failure
+  //
+  RetVal = -1;
+
+  //
+  //  Locate the context for this socket
+  //
+  pSocketProtocol = BslFdToSocketProtocol ( s, NULL, &errno );
+  if ( NULL != pSocketProtocol ) {
+    //
+    //  Get the remote address
+    //
+    Status = pSocketProtocol->pfnGetPeer ( pSocketProtocol,
+                                           address,
+                                           address_len,
+                                           &errno );
+    if ( !EFI_ERROR ( Status )) {
+      RetVal = 0;
+    }
+  }
+
+  //
+  //  Return the operation status
+  //
+  return RetVal;
+}