reactos/reactos/ntoskrnl/lpc/create.c

/* $Id: create.c,v 1.14 2003/12/30 18:52:05 fireball Exp $
 * 
 * COPYRIGHT:       See COPYING in the top level directory
 * PROJECT:         ReactOS kernel
 * FILE:            ntoskrnl/lpc/create.c
 * PURPOSE:         Communication mechanism
 * PROGRAMMER:      David Welch (welch@cwcom.net)
 * UPDATE HISTORY:
 *                  Created 22/05/98
 */

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

#define NTOS_MODE_KERNEL
#include <ntos.h>
#include <internal/port.h>
#include <internal/dbg.h>

#define NDEBUG
#include <internal/debug.h>

STATIC NTSTATUS STDCALL 
VerifyCreateParameters (IN	PHANDLE			PortHandle,
			IN	POBJECT_ATTRIBUTES	ObjectAttributes,
			IN	ULONG			MaxConnectInfoLength,
			IN	ULONG			MaxDataLength,
			IN	ULONG			Reserved)
{
  if (NULL == PortHandle)
    {
      return (STATUS_INVALID_PARAMETER_1);
    }
  if (NULL == ObjectAttributes)
    {
      return (STATUS_INVALID_PARAMETER_2);
    }
  if ((ObjectAttributes->Attributes    & OBJ_OPENLINK)
      || (ObjectAttributes->Attributes & OBJ_OPENIF)
      || (ObjectAttributes->Attributes & OBJ_EXCLUSIVE)
      || (ObjectAttributes->Attributes & OBJ_PERMANENT)
      || (ObjectAttributes->Attributes & OBJ_INHERIT))
  {
    return (STATUS_INVALID_PORT_ATTRIBUTES);
  }
  if (MaxConnectInfoLength > 0x104) /* FIXME: use a macro! */
    {
      return (STATUS_INVALID_PARAMETER_3);
    }
  if (MaxDataLength > 0x148) /* FIXME: use a macro! */
    {
      return (STATUS_INVALID_PARAMETER_4);
    }
  /* FIXME: some checking is done also on Reserved */
  return (STATUS_SUCCESS);
}


NTSTATUS STDCALL
NiCreatePort (PVOID			ObjectBody,
	      PVOID			Parent,
	      PWSTR			RemainingPath,
	      POBJECT_ATTRIBUTES	ObjectAttributes)
{
  if (RemainingPath == NULL)
    {
      return (STATUS_SUCCESS);
    }
  
  if (wcschr(RemainingPath+1, '\\') != NULL)
    {
      return (STATUS_UNSUCCESSFUL);
    }
  
  return (STATUS_SUCCESS);
}


/**********************************************************************
 * NAME							EXPORTED
 * 	NtCreatePort@20
 * 	
 * DESCRIPTION
 *
 * ARGUMENTS
 *	PortHandle,
 *	ObjectAttributes,
 *	MaxConnectInfoLength,
 *	MaxDataLength,
 *	Reserved
 * 
 * RETURN VALUE
 */
/*EXPORTED*/ NTSTATUS STDCALL 
NtCreatePort (PHANDLE		      PortHandle,
	      POBJECT_ATTRIBUTES    ObjectAttributes,
	      ULONG	       MaxConnectInfoLength,
	      ULONG			MaxDataLength,
	      ULONG			Reserved)
{
  PEPORT		Port;
  NTSTATUS	Status;
  
  DPRINT("NtCreatePort() Name %x\n", ObjectAttributes->ObjectName->Buffer);
  
  /* Verify parameters */
  Status = VerifyCreateParameters (PortHandle,
				   ObjectAttributes,
				   MaxConnectInfoLength,
				   MaxDataLength,
				   Reserved);
  if (!NT_SUCCESS(Status))
    {
      return (Status);
    }

  /* Ask Ob to create the object */
  Status = ObCreateObject (ExGetPreviousMode(),
			   ExPortType,
			   ObjectAttributes,
			   ExGetPreviousMode(),
			   NULL,
			   sizeof(EPORT),
			   0,
			   0,
			   (PVOID*)&Port);
  if (!NT_SUCCESS(Status))
    {
      return (Status);
    }

  Status = ObInsertObject ((PVOID)Port,
			   NULL,
			   PORT_ALL_ACCESS,
			   0,
			   NULL,
			   PortHandle);
  if (!NT_SUCCESS(Status))
    {
      ObDereferenceObject (Port);
      return (Status);
    }

  Status = NiInitializePort (Port);
  Port->MaxConnectInfoLength = 260; /* FIXME: use a macro! */
  Port->MaxDataLength = 328; /* FIXME: use a macro! */
  
  ObDereferenceObject (Port);
  
  return (Status);
}

/**********************************************************************
 * NAME							EXPORTED
 * 	NtCreateWaitablePort@20
 * 	
 * DESCRIPTION
 *	Waitable ports can be connected to with NtSecureConnectPort.
 *	No port interface can be used with waitable ports but
 *	NtReplyWaitReceivePort and NtReplyWaitReceivePortEx.
 * 	Present only in w2k+.
 *
 * ARGUMENTS
 *	PortHandle,
 *	ObjectAttributes,
 *	MaxConnectInfoLength,
 *	MaxDataLength,
 *	Reserved
 * 
 * RETURN VALUE
 */
/*EXPORTED*/ NTSTATUS STDCALL
NtCreateWaitablePort (OUT	PHANDLE			PortHandle,
		      IN	POBJECT_ATTRIBUTES	ObjectAttributes,
		      IN	ULONG			MaxConnectInfoLength,
		      IN	ULONG			MaxDataLength,
		      IN	ULONG			Reserved)
{
  NTSTATUS Status;
  
  /* Verify parameters */
  Status = VerifyCreateParameters (PortHandle,
				   ObjectAttributes,
				   MaxConnectInfoLength,
				   MaxDataLength,
				   Reserved);
  if (STATUS_SUCCESS != Status)
    {
      return (Status);
    }
  /* TODO */
  return (STATUS_NOT_IMPLEMENTED);
}

/* EOF */