ntoskrnl/lpc/listen.c

   1 /*
   2  * PROJECT:         ReactOS Kernel
   3  * LICENSE:         GPL - See COPYING in the top level directory
   4  * FILE:            ntoskrnl/lpc/listen.c
   5  * PURPOSE:         Local Procedure Call: Listening
   6  * PROGRAMMERS:     Alex Ionescu (alex.ionescu@reactos.org)
   7  */
   8
   9 /* INCLUDES ******************************************************************/
  10
  11 #include <ntoskrnl.h>
  12 #define NDEBUG
  13 #include <debug.h>
  14
  15 /* PUBLIC FUNCTIONS **********************************************************/
  16
  17 /*
  18  * @implemented
  19  */
  20 NTSTATUS
  21 NTAPI
  22 NtListenPort(IN HANDLE PortHandle,
  23              OUT PPORT_MESSAGE ConnectMessage)
  24 {
  25     NTSTATUS Status;
  26     PAGED_CODE();
  27     LPCTRACE(LPC_LISTEN_DEBUG, "Handle: %lx\n", PortHandle);
  28
  29     /* Wait forever for a connection request. */
  30     for (;;)
  31     {
  32         /* Do the wait */
  33         Status = NtReplyWaitReceivePort(PortHandle,
  34                                         NULL,
  35                                         NULL,
  36                                         ConnectMessage);
  37
  38         /* Accept only LPC_CONNECTION_REQUEST requests. */
  39         if ((Status != STATUS_SUCCESS) ||
  40             (LpcpGetMessageType(ConnectMessage) == LPC_CONNECTION_REQUEST))
  41         {
  42             /* Break out */
  43             break;
  44         }
  45     }
  46
  47     /* Return status */
  48     return Status;
  49 }
  50
  51
  52 /* EOF */