mirror of
https://github.com/reactos/reactos.git
synced 2024-12-29 10:35:28 +00:00
127 lines
4.2 KiB
C
127 lines
4.2 KiB
C
/*
|
|
* PROJECT: ReactOS Composite Battery Driver
|
|
* LICENSE: BSD - See COPYING.ARM in the top level directory
|
|
* FILE: boot/drivers/bus/acpi/compbatt/compmisc.c
|
|
* PURPOSE: Miscellaneous Support Routines
|
|
* PROGRAMMERS: ReactOS Portable Systems Group
|
|
*/
|
|
|
|
/* INCLUDES *******************************************************************/
|
|
|
|
#include "compbatt.h"
|
|
|
|
/* FUNCTIONS ******************************************************************/
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
BatteryIoctl(IN ULONG IoControlCode,
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PVOID InputBuffer,
|
|
IN ULONG InputBufferLength,
|
|
IN PVOID OutputBuffer,
|
|
IN ULONG OutputBufferLength,
|
|
IN BOOLEAN InternalDeviceIoControl)
|
|
{
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
KEVENT Event;
|
|
NTSTATUS Status;
|
|
PIRP Irp;
|
|
PAGED_CODE();
|
|
if (CompBattDebug & 0x100) DbgPrint("CompBatt: ENTERING BatteryIoctl\n");
|
|
|
|
/* Initialize the event and IRP */
|
|
KeInitializeEvent(&Event, SynchronizationEvent, 0);
|
|
Irp = IoBuildDeviceIoControlRequest(IoControlCode,
|
|
DeviceObject,
|
|
InputBuffer,
|
|
InputBufferLength,
|
|
OutputBuffer,
|
|
OutputBufferLength,
|
|
InternalDeviceIoControl,
|
|
&Event,
|
|
&IoStatusBlock);
|
|
if (Irp)
|
|
{
|
|
/* Call the class driver miniport */
|
|
Status = IoCallDriver(DeviceObject, Irp);
|
|
if (Status == STATUS_PENDING)
|
|
{
|
|
/* Wait for result */
|
|
KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
|
|
Status = IoStatusBlock.Status;
|
|
}
|
|
|
|
/* Print failure */
|
|
if (!(NT_SUCCESS(Status)) && (CompBattDebug & 8))
|
|
DbgPrint("BatteryIoctl: Irp failed - %x\n", Status);
|
|
|
|
/* Done */
|
|
if (CompBattDebug & 0x100) DbgPrint("CompBatt: EXITING BatteryIoctl\n");
|
|
}
|
|
else
|
|
{
|
|
/* Out of memory */
|
|
if (CompBattDebug & 8) DbgPrint("BatteryIoctl: couldn't create Irp\n");
|
|
Status = STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
/* Return status */
|
|
return Status;
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
CompBattGetDeviceObjectPointer(IN PUNICODE_STRING DeviceName,
|
|
IN ACCESS_MASK DesiredAccess,
|
|
OUT PFILE_OBJECT *FileObject,
|
|
OUT PDEVICE_OBJECT *DeviceObject)
|
|
{
|
|
NTSTATUS Status;
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
PFILE_OBJECT LocalFileObject;
|
|
HANDLE DeviceHandle;
|
|
PAGED_CODE();
|
|
|
|
/* Open a file object handle to the device */
|
|
InitializeObjectAttributes(&ObjectAttributes,
|
|
DeviceName,
|
|
OBJ_KERNEL_HANDLE,
|
|
NULL,
|
|
NULL);
|
|
Status = ZwCreateFile(&DeviceHandle,
|
|
DesiredAccess,
|
|
&ObjectAttributes,
|
|
&IoStatusBlock,
|
|
NULL,
|
|
0,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE,
|
|
FILE_OPEN,
|
|
0,
|
|
NULL,
|
|
0);
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
/* Reference the file object */
|
|
Status = ObReferenceObjectByHandle(DeviceHandle,
|
|
0,
|
|
*IoFileObjectType,
|
|
KernelMode,
|
|
(PVOID)&LocalFileObject,
|
|
NULL);
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
/* Return the FO and the associated DO */
|
|
*FileObject = LocalFileObject;
|
|
*DeviceObject = IoGetRelatedDeviceObject(LocalFileObject);
|
|
}
|
|
|
|
/* Close the handle */
|
|
ZwClose(DeviceHandle);
|
|
}
|
|
|
|
/* Return status */
|
|
return Status;
|
|
}
|
|
|
|
/* EOF */
|