initdosdev.c

来自「ReactOS是一些高手根据Windows XP的内核编写出的类XP。内核实现机」· C语言 代码 · 共 110 行

/* $Id: initdosdev.c 21257 2006-03-08 23:07:09Z audit $
 *
 * initdosdev.c - Define symbolic links to kernel devices (MS-DOS names).
 * 
 * ReactOS Operating System
 * 
 * --------------------------------------------------------------------
 *
 * 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>

static NTSTATUS STDCALL
SmpDosDevicesQueryRoutine(PWSTR ValueName,
			 ULONG ValueType,
			 PVOID ValueData,
			 ULONG ValueLength,
			 PVOID Context,
			 PVOID EntryContext)
{
  OBJECT_ATTRIBUTES ObjectAttributes;
  UNICODE_STRING DeviceName;
  UNICODE_STRING LinkName;
  HANDLE LinkHandle;
  WCHAR LinkBuffer[80];
  NTSTATUS Status;

  DPRINT("ValueName '%S'  Type %lu  Length %lu\n", ValueName, ValueType, ValueLength);
  DPRINT("ValueData '%S'\n", (PWSTR)ValueData);

  if (ValueType != REG_SZ)
    {
      return(STATUS_SUCCESS);
    }

  swprintf(LinkBuffer,
	   L"\\??\\%s",
	   ValueName);
  RtlInitUnicodeString(&LinkName,
		       LinkBuffer);
  RtlInitUnicodeString(&DeviceName,
		       (PWSTR)ValueData);

  DPRINT("SM: Linking %wZ --> %wZ\n",
	      &LinkName,
	      &DeviceName);

  /* create symbolic link */
  InitializeObjectAttributes(&ObjectAttributes,
			     &LinkName,
			     OBJ_PERMANENT|OBJ_CASE_INSENSITIVE,
			     NULL,
			     NULL);
  Status = NtCreateSymbolicLinkObject(&LinkHandle,
				      SYMBOLIC_LINK_ALL_ACCESS,
				      &ObjectAttributes,
				      &DeviceName);
  if (!NT_SUCCESS(Status))
    {
      DPRINT1("%s: NtCreateSymbolicLink( %wZ --> %wZ ) failed!\n",
		  __FUNCTION__,
		  &LinkName,
		  &DeviceName);
    }
  NtClose(LinkHandle);

  return(Status);
}


NTSTATUS
SmInitDosDevices(VOID)
{
  RTL_QUERY_REGISTRY_TABLE QueryTable[2];
  NTSTATUS Status;

  RtlZeroMemory(&QueryTable,
		sizeof(QueryTable));

  QueryTable[0].QueryRoutine = SmpDosDevicesQueryRoutine;

  Status = RtlQueryRegistryValues(RTL_REGISTRY_CONTROL,
				  L"\\Session Manager\\DOS Devices",
				  QueryTable,
				  NULL,
				  NULL);
  return(Status);
}

/* EOF */