listen.c

winNT技术操作系统,国外开放的原代码和LIUX一样

/*
 * PROJECT:         ReactOS Kernel
 * LICENSE:         GPL - See COPYING in the top level directory
 * FILE:            ntoskrnl/lpc/listen.c
 * PURPOSE:         Local Procedure Call: Listening
 * PROGRAMMERS:     Alex Ionescu ([e-mail])
 */

/* INCLUDES ******************************************************************/

#include <ntoskrnl.h>
#include "lpc.h"
#define NDEBUG
#include <internal/debug.h>

/* PUBLIC FUNCTIONS **********************************************************/

/*
 * @implemented
 */
NTSTATUS
NTAPI
NtListenPort(IN HANDLE PortHandle,
             OUT PPORT_MESSAGE ConnectMessage)
{
        NTSTATUS Status;
        PAGED_CODE();
        LPCTRACE(LPC_LISTEN_DEBUG, "Handle: %lx\n", PortHandle);

        /* Wait forever for a connection request. */
        for (;;)
        {
            /* Do the wait */
            Status = NtReplyWaitReceivePort(PortHandle,
                                            NULL,
                                            NULL,
                                            ConnectMessage);

            /* Accept only LPC_CONNECTION_REQUEST requests. */
            if ((Status != STATUS_SUCCESS) ||
                (LpcpGetMessageType(ConnectMessage) == LPC_CONNECTION_REQUEST))
            {
                /* Break out */
                break;
            }
        }

        /* Return status */
        return Status;
}


/* EOF */