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 #define NDEBUG
  14 #include <debug.h>
  15
  16
  17 /* FUNCTIONS ******************************************************************/
  18
  19 NTSTATUS NTAPI
  20 ConDrvCreateController(IN PDRIVER_OBJECT DriverObject,
  21                        IN PUNICODE_STRING RegistryPath)
  22 {
  23     NTSTATUS Status = STATUS_SUCCESS;
  24     UNICODE_STRING DeviceName, SymlinkName;
  25     PCONDRV_DRIVER DriverExtension;
  26     PDEVICE_OBJECT Controller = NULL;
  27
  28     DPRINT1("Create the Controller device...\n");
  29
  30     RtlInitUnicodeString(&DeviceName , DD_CONDRV_CTRL_DEVICE_NAME_U);
  31     RtlInitUnicodeString(&SymlinkName, DD_CONDRV_CTRL_SYMLNK_NAME_U);
  32
  33     /* Get the driver extension */
  34     DriverExtension = (PCONDRV_DRIVER)IoGetDriverObjectExtension(DriverObject,
  35                                                                  DriverObject);
  36
  37     /* Create the Controller device, if it doesn't exist */
  38     Status = IoCreateDevice(DriverObject,
  39                             0,
  40                             (PUNICODE_STRING)&DeviceName,
  41                             FILE_DEVICE_UNKNOWN,
  42                             FILE_DEVICE_SECURE_OPEN,
  43                             FALSE,
  44                             &Controller);
  45     if (!NT_SUCCESS(Status)) goto Done;
  46
  47     Status = IoCreateSymbolicLink(&SymlinkName, &DeviceName);
  48     if (!NT_SUCCESS(Status))
  49     {
  50         IoDeleteDevice(Controller);
  51         goto Done;
  52     }
  53
  54     Controller->Flags &= ~DO_DEVICE_INITIALIZING;
  55
  56     /* Save the Controller device */
  57     DriverExtension->Controller = Controller;
  58
  59 Done:
  60     DPRINT1("Done, Status = 0x%08lx\n", Status);
  61     return Status;
  62 }
  63
  64 NTSTATUS NTAPI
  65 ConDrvDeleteController(IN PDRIVER_OBJECT DriverObject)
  66 {
  67     NTSTATUS Status = STATUS_SUCCESS;
  68     PDEVICE_OBJECT Controller;
  69     UNICODE_STRING SymlinkName;
  70
  71     DPRINT1("Delete the Controller device...\n");
  72
  73     /* Retrieve the Controller device */
  74     Controller = ((PCONDRV_DRIVER)IoGetDriverObjectExtension(DriverObject, DriverObject))->Controller;
  75     if (!Controller) return STATUS_OBJECT_TYPE_MISMATCH;
  76
  77     RtlInitUnicodeString(&SymlinkName, DD_CONDRV_CTRL_SYMLNK_NAME_U);
  78     IoDeleteSymbolicLink(&SymlinkName);
  79
  80     /* Delete the controller device itself */
  81     IoDeleteDevice(Controller);
  82
  83     DPRINT1("Done, Status = 0x%08lx\n", Status);
  84     return Status;
  85 }
  86
  87 /* EOF */