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Implemented IoAttachDeviceByPointer() and IoGetDeviceObjectPointer().

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svn path=/trunk/; revision=1202
This commit is contained in:
Eric Kohl 2000-06-18 15:23:40 +00:00
parent 44bdd793c1
commit 9f1e56d438
1 changed files with 70 additions and 10 deletions
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80
reactos/ntoskrnl/io/device.c
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@ -1,4 +1,4 @@
/* $Id: device.c,v 1.16 2000/03/26 19:38:22 ea Exp $
/* $Id: device.c,v 1.17 2000/06/18 15:23:40 ekohl Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -48,7 +48,11 @@ NTSTATUS STDCALL NtUnloadDriver(IN PUNICODE_STRING DriverServiceName)
*
* REVISIONS
*/
NTSTATUS STDCALL NtLoadDriver (PUNICODE_STRING DriverServiceName)
NTSTATUS
STDCALL
NtLoadDriver (
PUNICODE_STRING DriverServiceName
)
{
/* FIXME: this should lookup the filename from the registry and then call LdrLoadDriver */
return LdrLoadDriver (DriverServiceName);
@ -57,10 +61,23 @@ NTSTATUS STDCALL NtLoadDriver (PUNICODE_STRING DriverServiceName)
NTSTATUS
STDCALL
IoAttachDeviceByPointer(PDEVICE_OBJECT SourceDevice,
PDEVICE_OBJECT TargetDevice)
IoAttachDeviceByPointer (
IN PDEVICE_OBJECT SourceDevice,
IN PDEVICE_OBJECT TargetDevice
)
{
UNIMPLEMENTED;
PDEVICE_OBJECT AttachedDevice;
DPRINT("IoAttachDeviceByPointer(SourceDevice %x, TargetDevice %x)\n",
SourceDevice,
TargetDevice);
AttachedDevice = IoAttachDeviceToDeviceStack (SourceDevice,
TargetDevice);
if (AttachedDevice == NULL)
return STATUS_NO_SUCH_DEVICE;
return STATUS_SUCCESS;
}
@ -84,14 +101,56 @@ IoGetRelatedDeviceObject (
NTSTATUS
STDCALL
IoGetDeviceObjectPointer(PUNICODE_STRING ObjectName,
ACCESS_MASK DesiredAccess,
PFILE_OBJECT* FileObject,
PDEVICE_OBJECT* DeviceObject)
IoGetDeviceObjectPointer (
IN PUNICODE_STRING ObjectName,
IN ACCESS_MASK DesiredAccess,
OUT PFILE_OBJECT * FileObject,
OUT PDEVICE_OBJECT * DeviceObject)
{
UNIMPLEMENTED;
OBJECT_ATTRIBUTES ObjectAttributes;
IO_STATUS_BLOCK StatusBlock;
PFILE_OBJECT LocalFileObject;
HANDLE FileHandle;
NTSTATUS Status;
DPRINT("IoGetDeviceObjectPointer(ObjectName %wZ, DesiredAccess %x, FileObject %p DeviceObject %p)\n",
ObjectName,
DesiredAccess,
FileObject,
DeviceObject);
InitializeObjectAttributes (&ObjectAttributes,
ObjectName,
0,
NULL,
NULL);
Status = NtOpenFile (&FileHandle,
DesiredAccess,
&ObjectAttributes,
&StatusBlock,
0,
FILE_NON_DIRECTORY_FILE);
if (!NT_SUCCESS(Status))
return Status;
Status = ObReferenceObjectByHandle (FileHandle,
0,
IoFileObjectType,
KernelMode,
(PVOID*)&LocalFileObject,
NULL);
if (NT_SUCCESS(Status))
{
*DeviceObject = IoGetRelatedDeviceObject (LocalFileObject);
*FileObject = LocalFileObject;
}
NtClose (FileHandle);
return Status;
}
VOID
STDCALL
IoDetachDevice(PDEVICE_OBJECT TargetDevice)
@ -99,6 +158,7 @@ IoDetachDevice(PDEVICE_OBJECT TargetDevice)
UNIMPLEMENTED;
}
PDEVICE_OBJECT
STDCALL
IoGetAttachedDevice(PDEVICE_OBJECT DeviceObject)