Update the sockets library code

[mirror_edk2.git] / StdLib / UseSocketDxe / UseSocketDxe.c

/** @file\r
  Implement the connection to the socket driver\r
\r
  Copyright (c) 2011, Intel Corporation\r
  All rights reserved. This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#include <Uefi.h>\r
\r
#include <Library/DebugLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/UefiLib.h>\r
\r
#include <Protocol/EfiSocket.h>\r
#include <Protocol/ServiceBinding.h>\r
\r
\r
/**\r
  Connect to the EFI socket library\r
\r
  This routine establishes a connection to the socket driver\r
  and returns the API (::EFI_SOCKET_PROTOCOL address) to the\r
  socket file system layer in BsdSocketLib.  This routine looks for\r
  the gEfiSocketServiceBindingProtocolGuid to locate the socket\r
  driver.  This routine then creates a child handle and locates\r
  the gEfiSocketProtocolGuid protocol on that handle to get the\r
  ::EFI_SOCKET_PROTOCOL structure address.\r
\r
  This routine is called from the ::socket routine in BsdSocketLib\r
  to create the data structure and initialize the API for a socket.\r
  Note that this implementation is only used by socket applications\r
  that link directly to UseSocketDxe.\r
\r
  @param [in] ppSocketProtocol  Address to receive the ::EFI_SOCKET_PROTOCOL\r
                                structure address\r
\r
  @return       Value for ::errno, zero (0) indicates success.\r
\r
 **/\r
int\r
EslServiceGetProtocol (\r
  IN EFI_SOCKET_PROTOCOL ** ppSocketProtocol\r
  )\r
{\r
  EFI_SERVICE_BINDING_PROTOCOL * pServiceBinding;\r
  int RetVal;\r
  EFI_HANDLE SocketHandle;\r
  EFI_STATUS Status;\r
\r
  //\r
  //  Locate the socket protocol\r
  //\r
  Status = gBS->LocateProtocol ( &gEfiSocketServiceBindingProtocolGuid,\r
                                 NULL,\r
                                 (VOID **)&pServiceBinding );\r
  if ( !EFI_ERROR ( Status )) {\r
    //\r
    //  Create a new socket\r
    //\r
    SocketHandle = NULL;\r
    Status = pServiceBinding->CreateChild ( pServiceBinding,\r
                                            &SocketHandle );\r
    if ( !EFI_ERROR ( Status )) {\r
      //\r
      //  Get the socket protocol\r
      //\r
      Status = gBS->OpenProtocol ( SocketHandle,\r
                                   &gEfiSocketProtocolGuid,\r
                                   (VOID **)ppSocketProtocol,\r
                                   NULL,\r
                                   NULL,\r
                                   EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL );\r
      if ( !EFI_ERROR ( Status )) {\r
        //\r
        //  Success!\r
        //\r
        RetVal = 0;\r
      }\r
      else {\r
        DEBUG (( DEBUG_ERROR,\r
                  "ERROR - No socket protocol on 0x%08x, Status: %r\r\n",\r
                  SocketHandle,\r
                  Status ));\r
        RetVal = ENODEV;\r
      }\r
    }\r
    else {\r
      //\r
      //  Translate the error\r
      //\r
      DEBUG (( DEBUG_ERROR,\r
                "ERROR - CreateChild failed, Status: %r\r\n",\r
                Status ));\r
      switch ( Status ) {\r
      case EFI_SUCCESS:\r
        RetVal = 0;\r
        break;\r
\r
      case EFI_ACCESS_DENIED:\r
      case EFI_WRITE_PROTECTED:\r
        RetVal = EACCES;\r
        break;\r
\r
      case EFI_NO_RESPONSE:\r
        RetVal = EHOSTUNREACH;\r
        break;\r
\r
      case EFI_BAD_BUFFER_SIZE:\r
      case EFI_BUFFER_TOO_SMALL:\r
      case EFI_INVALID_PARAMETER:\r
        RetVal = EINVAL;\r
        break;\r
\r
      case EFI_DEVICE_ERROR:\r
      case EFI_MEDIA_CHANGED:\r
      case EFI_NO_MEDIA:\r
      case EFI_VOLUME_CORRUPTED:\r
        RetVal = EIO;\r
        break;\r
\r
      case EFI_NOT_FOUND:\r
        RetVal = ENOENT;\r
        break;\r
\r
      default:\r
      case EFI_OUT_OF_RESOURCES:\r
        RetVal = ENOMEM;\r
        break;\r
\r
      case EFI_VOLUME_FULL:\r
        RetVal = ENOSPC;\r
        break;\r
\r
      case EFI_UNSUPPORTED:\r
        RetVal = ENOSYS;\r
        break;\r
\r
      case EFI_NO_MAPPING:\r
        RetVal = ENXIO;\r
        break;\r
\r
      case EFI_LOAD_ERROR:\r
        RetVal = ESRCH;\r
        break;\r
\r
      case EFI_TIMEOUT:\r
        RetVal = ETIMEDOUT;\r
        break;\r
\r
      case EFI_NOT_READY:\r
        RetVal = EWOULDBLOCK;\r
        break;\r
      }\r
    }\r
  }\r
  else {\r
    DEBUG (( DEBUG_ERROR,\r
              "ERROR - Socket driver not loaded, Status: %r\r\n",\r
              Status ));\r
    RetVal = ENODEV;\r
  }\r
\r
  //\r
  //  Return the operation status\r
  //\r
  return RetVal;\r
}\r