reactos/subsys/smss/initdosdev.c

   1 /* $Id$
   2  *
   3  * initdosdev.c - Define symbolic links to kernel devices (MS-DOS names).
   4  *
   5  * ReactOS Operating System
   6  *
   7  * --------------------------------------------------------------------
   8  *
   9  * This software is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; either version 2 of the
  12  * License, or (at your option) any later version.
  13  *
  14  * This software is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this software; see the file COPYING.LIB. If not, write
  21  * to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge,
  22  * MA 02139, USA.
  23  *
  24  * --------------------------------------------------------------------
  25  */
  26
  27 #include "smss.h"
  28
  29 #define NDEBUG
  30 #include <debug.h>
  31
  32 static NTSTATUS STDCALL
  33 SmpDosDevicesQueryRoutine(PWSTR ValueName,
  34                          ULONG ValueType,
  35                          PVOID ValueData,
  36                          ULONG ValueLength,
  37                          PVOID Context,
  38                          PVOID EntryContext)
  39 {
  40   OBJECT_ATTRIBUTES ObjectAttributes;
  41   UNICODE_STRING DeviceName;
  42   UNICODE_STRING LinkName;
  43   HANDLE LinkHandle;
  44   WCHAR LinkBuffer[80];
  45   NTSTATUS Status;
  46
  47   DPRINT("ValueName '%S'  Type %lu  Length %lu\n", ValueName, ValueType, ValueLength);
  48   DPRINT("ValueData '%S'\n", (PWSTR)ValueData);
  49
  50   if (ValueType != REG_SZ)
  51     {
  52       return(STATUS_SUCCESS);
  53     }
  54
  55   swprintf(LinkBuffer,
  56            L"\\??\\%s",
  57            ValueName);
  58   RtlInitUnicodeString(&LinkName,
  59                        LinkBuffer);
  60   RtlInitUnicodeString(&DeviceName,
  61                        (PWSTR)ValueData);
  62
  63   DPRINT("SM: Linking %wZ --> %wZ\n",
  64               &LinkName,
  65               &DeviceName);
  66
  67   /* create symbolic link */
  68   InitializeObjectAttributes(&ObjectAttributes,
  69                              &LinkName,
  70                              OBJ_PERMANENT|OBJ_CASE_INSENSITIVE,
  71                              NULL,
  72                              NULL);
  73   Status = NtCreateSymbolicLinkObject(&LinkHandle,
  74                                       SYMBOLIC_LINK_ALL_ACCESS,
  75                                       &ObjectAttributes,
  76                                       &DeviceName);
  77   if (!NT_SUCCESS(Status))
  78     {
  79       DPRINT1("%s: NtCreateSymbolicLink( %wZ --> %wZ ) failed!\n",
  80                   __FUNCTION__,
  81                   &LinkName,
  82                   &DeviceName);
  83     }
  84   NtClose(LinkHandle);
  85
  86   return(Status);
  87 }
  88
  89
  90 NTSTATUS
  91 SmInitDosDevices(VOID)
  92 {
  93   RTL_QUERY_REGISTRY_TABLE QueryTable[2];
  94   NTSTATUS Status;
  95
  96   RtlZeroMemory(&QueryTable,
  97                 sizeof(QueryTable));
  98
  99   QueryTable[0].QueryRoutine = SmpDosDevicesQueryRoutine;
 100
 101   Status = RtlQueryRegistryValues(RTL_REGISTRY_CONTROL,
 102                                   L"\\Session Manager\\DOS Devices",
 103                                   QueryTable,
 104                                   NULL,
 105                                   NULL);
 106   return(Status);
 107 }
 108
 109 /* EOF */