reactos/ntoskrnl/po/events.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS kernel
   4  * FILE:            ntoskrnl/po/events.c
   5  * PURPOSE:         Power Manager
   6  *
   7  * PROGRAMMERS:     Hervé Poussineau (hpoussin@reactos.org)
   8  */
   9
  10 #include <ntoskrnl.h>
  11 //#define NDEBUG
  12 #include <internal/debug.h>
  13
  14 NTSTATUS CALLBACK
  15 PopAddRemoveSysCapsCallback(
  16         IN PVOID NotificationStructure,
  17         IN PVOID Context)
  18 {
  19         PDEVICE_INTERFACE_CHANGE_NOTIFICATION Notification;
  20         OBJECT_ATTRIBUTES ObjectAttributes;
  21         HANDLE DeviceHandle;
  22         IO_STATUS_BLOCK IoStatusBlock;
  23         BOOLEAN Arrival;
  24         ULONG Caps;
  25         NTSTATUS Status;
  26
  27         DPRINT("PopAddRemoveSysCapsCallback(%p %p)\n",
  28                 NotificationStructure, Context);
  29
  30         Notification = (PDEVICE_INTERFACE_CHANGE_NOTIFICATION)NotificationStructure;
  31         if (Notification->Version != 1)
  32                 return STATUS_REVISION_MISMATCH;
  33         if (Notification->Size != sizeof(DEVICE_INTERFACE_CHANGE_NOTIFICATION))
  34                 return STATUS_INVALID_PARAMETER;
  35         if (RtlCompareMemory(&Notification->Event, &GUID_DEVICE_INTERFACE_ARRIVAL, sizeof(GUID) == sizeof(GUID)))
  36                 Arrival = TRUE;
  37         else if (RtlCompareMemory(&Notification->Event, &GUID_DEVICE_INTERFACE_REMOVAL, sizeof(GUID) == sizeof(GUID)))
  38                 Arrival = FALSE;
  39         else
  40                 return STATUS_INVALID_PARAMETER;
  41
  42         if (Arrival)
  43         {
  44                 DPRINT("Arrival of %wZ\n", Notification->SymbolicLinkName);
  45
  46                 /* Open device */
  47                 InitializeObjectAttributes(
  48                         &ObjectAttributes,
  49                         Notification->SymbolicLinkName,
  50                         OBJ_KERNEL_HANDLE,
  51                         NULL,
  52                         NULL);
  53                 Status = ZwOpenFile(
  54                         &DeviceHandle,
  55                         FILE_READ_DATA,
  56                         &ObjectAttributes,
  57                         &IoStatusBlock,
  58                         FILE_SHARE_READ | FILE_SHARE_WRITE,
  59                         0);
  60                 if (!NT_SUCCESS(Status))
  61                 {
  62                         DPRINT("ZwOpenFile() failed with status 0x%08lx\n", Status);
  63                         return Status;
  64                 }
  65
  66                 /* Send IOCTL_GET_SYS_BUTTON_CAPS to get new caps */
  67                 Status = ZwDeviceIoControlFile(
  68                         DeviceHandle,
  69                         NULL,
  70                         NULL,
  71                         NULL,
  72                         &IoStatusBlock,
  73                         IOCTL_GET_SYS_BUTTON_CAPS,
  74                         NULL,
  75                         0,
  76                         &Caps,
  77                         sizeof(Caps));
  78                 if (!NT_SUCCESS(Status))
  79                 {
  80                         DPRINT("ZwDeviceIoControlFile(IOCTL_GET_SYS_BUTTON_CAPS) failed with status 0x%08lx\n", Status);
  81                         ZwClose(DeviceHandle);
  82                         return Status;
  83                 }
  84                 /* FIXME: What do do with this? */
  85                 DPRINT1("Device capabilities: 0x%lx\n", Caps);
  86
  87                 /* Send IOCTL_GET_SYS_BUTTON_CAPS to get current caps */
  88                 /* FIXME: Set a IO completion routine on it to be able to send a new one */
  89                 DPRINT1("Send a IOCTL_GET_SYS_BUTTON_EVENT\n");
  90                 return ZwClose(DeviceHandle);
  91         }
  92         else
  93         {
  94                 DPRINT1("Removal of a power capable device not implemented\n");
  95                 return STATUS_NOT_IMPLEMENTED;
  96         }
  97 }