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
  15 NTAPI
  16 PopAddRemoveSysCapsCallback(
  17         IN PVOID NotificationStructure,
  18         IN PVOID Context)
  19 {
  20         PDEVICE_INTERFACE_CHANGE_NOTIFICATION Notification;
  21         OBJECT_ATTRIBUTES ObjectAttributes;
  22         HANDLE DeviceHandle;
  23         IO_STATUS_BLOCK IoStatusBlock;
  24         BOOLEAN Arrival;
  25         ULONG Caps;
  26         NTSTATUS Status;
  27
  28         DPRINT("PopAddRemoveSysCapsCallback(%p %p)\n",
  29                 NotificationStructure, Context);
  30
  31         Notification = (PDEVICE_INTERFACE_CHANGE_NOTIFICATION)NotificationStructure;
  32         if (Notification->Version != 1)
  33                 return STATUS_REVISION_MISMATCH;
  34         if (Notification->Size != sizeof(DEVICE_INTERFACE_CHANGE_NOTIFICATION))
  35                 return STATUS_INVALID_PARAMETER;
  36         if (RtlCompareMemory(&Notification->Event, &GUID_DEVICE_INTERFACE_ARRIVAL, sizeof(GUID) == sizeof(GUID)))
  37                 Arrival = TRUE;
  38         else if (RtlCompareMemory(&Notification->Event, &GUID_DEVICE_INTERFACE_REMOVAL, sizeof(GUID) == sizeof(GUID)))
  39                 Arrival = FALSE;
  40         else
  41                 return STATUS_INVALID_PARAMETER;
  42
  43         if (Arrival)
  44         {
  45                 DPRINT("Arrival of %wZ\n", Notification->SymbolicLinkName);
  46
  47                 /* Open device */
  48                 InitializeObjectAttributes(
  49                         &ObjectAttributes,
  50                         Notification->SymbolicLinkName,
  51                         OBJ_KERNEL_HANDLE,
  52                         NULL,
  53                         NULL);
  54                 Status = ZwOpenFile(
  55                         &DeviceHandle,
  56                         FILE_READ_DATA,
  57                         &ObjectAttributes,
  58                         &IoStatusBlock,
  59                         FILE_SHARE_READ | FILE_SHARE_WRITE,
  60                         0);
  61                 if (!NT_SUCCESS(Status))
  62                 {
  63                         DPRINT("ZwOpenFile() failed with status 0x%08lx\n", Status);
  64                         return Status;
  65                 }
  66
  67                 /* Send IOCTL_GET_SYS_BUTTON_CAPS to get new caps */
  68                 Status = ZwDeviceIoControlFile(
  69                         DeviceHandle,
  70                         NULL,
  71                         NULL,
  72                         NULL,
  73                         &IoStatusBlock,
  74                         IOCTL_GET_SYS_BUTTON_CAPS,
  75                         NULL,
  76                         0,
  77                         &Caps,
  78                         sizeof(Caps));
  79                 if (!NT_SUCCESS(Status))
  80                 {
  81                         DPRINT("ZwDeviceIoControlFile(IOCTL_GET_SYS_BUTTON_CAPS) failed with status 0x%08lx\n", Status);
  82                         ZwClose(DeviceHandle);
  83                         return Status;
  84                 }
  85                 /* FIXME: What do do with this? */
  86                 DPRINT1("Device capabilities: 0x%lx\n", Caps);
  87
  88                 /* Send IOCTL_GET_SYS_BUTTON_CAPS to get current caps */
  89                 /* FIXME: Set a IO completion routine on it to be able to send a new one */
  90                 DPRINT1("Send a IOCTL_GET_SYS_BUTTON_EVENT\n");
  91                 return ZwClose(DeviceHandle);
  92         }
  93         else
  94         {
  95                 DPRINT1("Removal of a power capable device not implemented\n");
  96                 return STATUS_NOT_IMPLEMENTED;
  97         }
  98 }