StdLib/BsdSocketLib/poll.c

   1 /** @file
   2   Implement the poll API.
   3
   4   Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
   5   This program and the accompanying materials are licensed and made available under
   6   the terms and conditions of the BSD License that accompanies this distribution.
   7   The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php.
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 **/
  13 #include <SocketInternals.h>
  14
  15
  16 /** Poll the socket for activity
  17
  18   @param [in] pDescriptor Descriptor address for the file
  19   @param [in] Events      Mask of events to detect
  20
  21   @return     Detected events for the socket
  22  **/
  23 short
  24 EFIAPI
  25 BslSocketPoll (
  26   IN struct __filedes * pDescriptor,
  27   IN short Events
  28   )
  29 {
  30   short                 DetectedEvents;
  31   EFI_SOCKET_PROTOCOL * pSocketProtocol;
  32
  33   //  Locate the socket protocol
  34   DetectedEvents = 0;
  35   pSocketProtocol = BslValidateSocketFd ( pDescriptor, &errno );
  36   if ( NULL != pSocketProtocol ) {
  37     //  Poll the socket
  38     (void) pSocketProtocol->pfnPoll ( pSocketProtocol,
  39                                       Events,
  40                                       &DetectedEvents,
  41                                       &errno );
  42   }
  43   //  Return the detected events
  44   return DetectedEvents;
  45 }