drivers/base/condrv/control.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS Console Driver
   4  * FILE:            drivers/base/condrv/control.c
   5  * PURPOSE:         Console Driver - Controller Device
   6  * PROGRAMMERS:     Hermes Belusca-Maito (hermes.belusca@sfr.fr)
   7  */
   8
   9 /* INCLUDES *******************************************************************/
  10
  11 #include "condrv.h"
  12
  13 #include <condrv/ntddcon.h>
  14
  15 #define NDEBUG
  16 #include <debug.h>
  17
  18 /* FUNCTIONS ******************************************************************/
  19
  20 NTSTATUS NTAPI
  21 ConDrvCreateController(IN PDRIVER_OBJECT DriverObject,
  22                        IN PUNICODE_STRING RegistryPath)
  23 {
  24     NTSTATUS Status = STATUS_SUCCESS;
  25     UNICODE_STRING DeviceName, SymlinkName;
  26     PCONDRV_DRIVER DriverExtension;
  27     PDEVICE_OBJECT Controller = NULL;
  28
  29     DPRINT1("Create the Controller device...\n");
  30
  31     RtlInitUnicodeString(&DeviceName , DD_CONDRV_CTRL_DEVICE_NAME_U);
  32     RtlInitUnicodeString(&SymlinkName, DD_CONDRV_CTRL_SYMLNK_NAME_U);
  33
  34     /* Get the driver extension */
  35     DriverExtension = (PCONDRV_DRIVER)IoGetDriverObjectExtension(DriverObject,
  36                                                                  DriverObject);
  37
  38     /* Create the Controller device, if it doesn't exist */
  39     Status = IoCreateDevice(DriverObject,
  40                             0,
  41                             (PUNICODE_STRING)&DeviceName,
  42                             FILE_DEVICE_UNKNOWN,
  43                             FILE_DEVICE_SECURE_OPEN,
  44                             FALSE,
  45                             &Controller);
  46     if (!NT_SUCCESS(Status)) goto Done;
  47
  48     Status = IoCreateSymbolicLink(&SymlinkName, &DeviceName);
  49     if (!NT_SUCCESS(Status))
  50     {
  51         IoDeleteDevice(Controller);
  52         goto Done;
  53     }
  54
  55     Controller->Flags &= ~DO_DEVICE_INITIALIZING;
  56
  57     /* Save the Controller device */
  58     DriverExtension->Controller = Controller;
  59
  60 Done:
  61     DPRINT1("Done, Status = 0x%08lx\n", Status);
  62     return Status;
  63 }
  64
  65 NTSTATUS NTAPI
  66 ConDrvDeleteController(IN PDRIVER_OBJECT DriverObject)
  67 {
  68     NTSTATUS Status = STATUS_SUCCESS;
  69     PDEVICE_OBJECT Controller;
  70     UNICODE_STRING SymlinkName;
  71
  72     DPRINT1("Delete the Controller device...\n");
  73
  74     /* Retrieve the Controller device */
  75     Controller = ((PCONDRV_DRIVER)IoGetDriverObjectExtension(DriverObject, DriverObject))->Controller;
  76     if (!Controller) return STATUS_OBJECT_TYPE_MISMATCH;
  77
  78     RtlInitUnicodeString(&SymlinkName, DD_CONDRV_CTRL_SYMLNK_NAME_U);
  79     IoDeleteSymbolicLink(&SymlinkName);
  80
  81     /* Delete the controller device itself */
  82     IoDeleteDevice(Controller);
  83
  84     DPRINT1("Done, Status = 0x%08lx\n", Status);
  85     return Status;
  86 }
  87
  88 /* EOF */