smapiquery.c

ReactOS是一些高手根据Windows XP的内核编写出的类XP。内核实现机理和API函数调用几乎相同。甚至可以兼容XP的程序。喜欢研究系统内核的人可以看一看。

/* $Id: smapiquery.c 21257 2006-03-08 23:07:09Z audit $
 *
 * smapiquery.c - SM_API_QUERY_INFORMATION
 *
 * Reactos Session Manager
 *
 * --------------------------------------------------------------------
 *
 * This software is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this software; see the file COPYING.LIB. If not, write
 * to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge,
 * MA 02139, USA.  
 *
 * --------------------------------------------------------------------
 */
#include "smss.h"

#define NDEBUG
#include <debug.h>


/**********************************************************************
 * SmQryInfo/1							API
 */
SMAPI(SmQryInfo)
{
	NTSTATUS Status = STATUS_SUCCESS;

	DPRINT("SM: %s called\n", __FUNCTION__);

	switch (Request->Request.QryInfo.SmInformationClass)
	{
	case SmBasicInformation:
		if(Request->Request.QryInfo.DataLength != sizeof (SM_BASIC_INFORMATION))
		{
			Request->Reply.QryInfo.DataLength = sizeof (SM_BASIC_INFORMATION);
			Request->SmHeader.Status = STATUS_INFO_LENGTH_MISMATCH;
		}else{
			Request->SmHeader.Status =
				SmGetClientBasicInformation (& Request->Reply.QryInfo.BasicInformation);
		}
		break;
	case SmSubSystemInformation:
		if(Request->Request.QryInfo.DataLength != sizeof (SM_SUBSYSTEM_INFORMATION))
		{
			Request->Reply.QryInfo.DataLength = sizeof (SM_SUBSYSTEM_INFORMATION);
			Request->SmHeader.Status = STATUS_INFO_LENGTH_MISMATCH;
		}else{
			Request->SmHeader.Status =
				SmGetSubSystemInformation (& Request->Reply.QryInfo.SubSystemInformation);
		}
		break;
	default:
		Request->SmHeader.Status = STATUS_NOT_IMPLEMENTED;
		break;
	}
	return Status;
}


/* EOF */