-/* $Id:$
- *
+/* $Id$
+ *
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* FILE: ntoskrnl/io/deviface.c
* PURPOSE: Device interface functions
- *
+ *
* PROGRAMMERS: Filip Navara (xnavara@volny.cz)
* Matthew Brace (ismarc@austin.rr.com)
* Hervé Poussineau (hpoussin@reactos.com)
* Returns a list of device interfaces of a particular device interface class.
*
* Parameters
- * InterfaceClassGuid
+ * InterfaceClassGuid
* Points to a class GUID specifying the device interface class.
*
- * PhysicalDeviceObject
+ * PhysicalDeviceObject
* Points to an optional PDO that narrows the search to only the
- * device interfaces of the device represented by the PDO.
+ * device interfaces of the device represented by the PDO.
*
- * Flags
+ * Flags
* Specifies flags that modify the search for device interfaces. The
* DEVICE_INTERFACE_INCLUDE_NONACTIVE flag specifies that the list of
* returned symbolic links should contain also disabled device
- * interfaces in addition to the enabled ones.
+ * interfaces in addition to the enabled ones.
*
- * SymbolicLinkList
+ * SymbolicLinkList
* Points to a character pointer that is filled in on successful return
* with a list of unicode strings identifying the device interfaces
* that match the search criteria. The newly allocated buffer contains
* a list of symbolic link names. Each unicode string in the list is
* null-terminated; the end of the whole list is marked by an additional
* NULL. The caller is responsible for freeing the buffer (ExFreePool)
- * when it is no longer needed.
+ * when it is no longer needed.
* If no device interfaces match the search criteria, this routine
* returns STATUS_SUCCESS and the string contains a single NULL
- * character.
+ * character.
*
* Status
* @implemented
ULONG i = 0;
ULONG j = 0;
OBJECT_ATTRIBUTES ObjectAttributes;
-
+
Status = RtlStringFromGUID(InterfaceClassGuid, &GuidString);
if (!NT_SUCCESS(Status))
{
}
DPRINT("IoGetDeviceInterfaces() called with PDO, not implemented.\n");
- return STATUS_NOT_IMPLEMENTED;
+ return STATUS_NOT_IMPLEMENTED;
}
else
- {
+ {
InitializeObjectAttributes(
&ObjectAttributes,
&BaseKeyName,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
-
+
Status = ZwOpenKey(
&InterfaceKey,
KEY_READ,
fip,
Size,
&Size);
-
+
if (!NT_SUCCESS(Status))
{
DPRINT("ZwQueryKey() Failed. (0x%X)\n", Status);
bip = (PKEY_BASIC_INFORMATION)ExAllocatePool(NonPagedPool, Size);
ASSERT(bip != NULL);
-
+
Status = ZwEnumerateKey(
InterfaceKey,
i,
bip,
Size,
&Size);
-
+
if (!NT_SUCCESS(Status))
{
DPRINT("ZwEnumerateKey() Failed.(0x%X)\n", Status);
ZwClose(InterfaceKey);
return Status;
}
-
+
SubKeyName.Length = 0;
SubKeyName.MaximumLength = BaseKeyName.Length + bip->NameLength + sizeof(WCHAR);
SubKeyName.Buffer = ExAllocatePool(NonPagedPool, SubKeyName.MaximumLength);
bfip,
Size,
&Size);
-
+
if (!NT_SUCCESS(Status))
{
DPRINT("ZwQueryKey() Failed. (0x%X)\n", Status);
ZwClose(InterfaceKey);
return Status;
}
-
+
for(j = 0; j < bfip->SubKeys; j++)
{
Status = ZwEnumerateKey(
ZwClose(InterfaceKey);
return Status;
}
-
+
if (!wcsncmp(bip->Name, L"Control", bip->NameLength))
{
continue;
}
-
+
SymbolicLinkKeyName.Length = 0;
SymbolicLinkKeyName.MaximumLength = SubKeyName.Length + bip->NameLength + sizeof(WCHAR);
SymbolicLinkKeyName.Buffer = ExAllocatePool(NonPagedPool, SymbolicLinkKeyName.MaximumLength);
ASSERT(ControlKeyName.Buffer != NULL);
RtlCopyUnicodeString(&ControlKeyName, &SymbolicLinkKeyName);
RtlAppendUnicodeStringToString(&ControlKeyName, &Control);
-
+
ExFreePool(bip);
InitializeObjectAttributes(
}
Status = ZwQueryValueKey(
- SymbolicLinkKey,
- &SymbolicLink,
+ SymbolicLinkKey,
+ &SymbolicLink,
KeyValuePartialInformation,
NULL,
0,
&Size);
-
+
if (Status == STATUS_OBJECT_NAME_NOT_FOUND)
continue;
-
+
if (Status != STATUS_BUFFER_TOO_SMALL)
{
DPRINT("ZwQueryValueKey() Failed.(0x%X)\n", Status);
Status = RtlCheckRegistryKey(RTL_REGISTRY_ABSOLUTE, ControlKeyName.Buffer);
if (NT_SUCCESS(Status))
- {
+ {
/* Put the name in the string here */
if (SymLinkList == NULL)
{
RtlCopyMemory(SymLinkListPtr, vpip->Data, vpip->DataLength);
SymLinkListPtr[vpip->DataLength / sizeof(WCHAR)] = 0;
SymLinkListPtr[1] = '?';
- }
+ }
}
RtlFreeUnicodeString(&SymbolicLinkKeyName);
}
*SymbolicLinkList = SymLinkList;
-
+
RtlFreeUnicodeString(&BaseKeyName);
ZwClose(InterfaceKey);
ExFreePool(bfip);
OBJECT_ATTRIBUTES ObjectAttributes;
ULONG i;
NTSTATUS Status;
-
+
if (!(PhysicalDeviceObject->Flags & DO_BUS_ENUMERATED_DEVICE))
{
DPRINT("PhysicalDeviceObject 0x%p is not a valid Pdo\n", PhysicalDeviceObject);
return STATUS_INVALID_PARAMETER_1;
}
-
+
Status = RtlStringFromGUID(InterfaceClassGuid, &GuidString);
if (!NT_SUCCESS(Status))
{
DPRINT("RtlStringFromGUID() failed with status 0x%08lx\n", Status);
return Status;
}
-
+
/* Create Pdo name: \Device\xxxxxxxx (unnamed device) */
Status = ObQueryNameString(
PhysicalDeviceObject,
return Status;
}
ASSERT(PdoNameInfo->Name.Length);
-
+
/* Create base key name for this interface: HKLM\SYSTEM\CurrentControlSet\DeviceClasses\{GUID}\##?#ACPI#PNP0501#1#{GUID} */
ASSERT(PhysicalDeviceObject->DeviceObjectExtension->DeviceNode);
InstancePath = &PhysicalDeviceObject->DeviceObjectExtension->DeviceNode->InstancePath;
}
RtlAppendUnicodeToString(&BaseKeyName, L"#");
RtlAppendUnicodeStringToString(&BaseKeyName, &GuidString);
-
+
/* Create BaseKeyName key in registry */
InitializeObjectAttributes(
&ObjectAttributes,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE | OBJ_OPENIF,
NULL, /* RootDirectory */
NULL); /* SecurityDescriptor */
-
+
Status = ZwCreateKey(
&InterfaceKey,
KEY_WRITE,
NULL, /* Class */
REG_OPTION_VOLATILE,
NULL); /* Disposition */
-
+
if (!NT_SUCCESS(Status))
{
DPRINT("ZwCreateKey() failed with status 0x%08lx\n", Status);
ExFreePool(BaseKeyName.Buffer);
return Status;
}
-
+
/* Write DeviceInstance entry. Value is InstancePath */
Status = ZwSetValueKey(
InterfaceKey,
ExFreePool(BaseKeyName.Buffer);
return Status;
}
-
+
/* Create subkey. Name is #ReferenceString */
SubKeyName.Length = 0;
SubKeyName.MaximumLength = sizeof(WCHAR);
RtlAppendUnicodeToString(&SubKeyName, L"#");
if (ReferenceString && ReferenceString->Length)
RtlAppendUnicodeStringToString(&SubKeyName, ReferenceString);
-
+
/* Create SubKeyName key in registry */
InitializeObjectAttributes(
&ObjectAttributes,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
InterfaceKey, /* RootDirectory */
NULL); /* SecurityDescriptor */
-
+
Status = ZwCreateKey(
&SubKey,
KEY_WRITE,
NULL, /* Class */
REG_OPTION_VOLATILE,
NULL); /* Disposition */
-
+
if (!NT_SUCCESS(Status))
{
DPRINT("ZwCreateKey() failed with status 0x%08lx\n", Status);
ExFreePool(BaseKeyName.Buffer);
return Status;
}
-
+
/* Create symbolic link name: \??\ACPI#PNP0501#1#{GUID}\ReferenceString */
SymbolicLinkName->Length = 0;
SymbolicLinkName->MaximumLength = SymbolicLinkName->Length
RtlAppendUnicodeStringToString(SymbolicLinkName, ReferenceString);
}
SymbolicLinkName->Buffer[SymbolicLinkName->Length] = '\0';
-
+
/* Create symbolic link */
DPRINT("IoRegisterDeviceInterface(): creating symbolic link %wZ -> %wZ\n", SymbolicLinkName, &PdoNameInfo->Name);
Status = IoCreateSymbolicLink(SymbolicLinkName, &PdoNameInfo->Name);
ExFreePool(SymbolicLinkName->Buffer);
return Status;
}
-
+
/* Write symbolic link name in registry */
Status = ZwSetValueKey(
SubKey,
DPRINT("ZwSetValueKey() failed with status 0x%08lx\n", Status);
ExFreePool(SymbolicLinkName->Buffer);
}
-
+
ZwClose(InterfaceKey);
ZwClose(SubKey);
ExFreePool(SubKeyName.Buffer);
ExFreePool(BaseKeyName.Buffer);
-
+
return Status;
}
PWCHAR StartPosition;
PWCHAR EndPosition;
NTSTATUS Status;
-
+
if (SymbolicLinkName == NULL)
return STATUS_INVALID_PARAMETER_1;
-
+
DPRINT("IoSetDeviceInterfaceState('%wZ', %d)\n", SymbolicLinkName, Enable);
Status = IoGetDeviceObjectPointer(SymbolicLinkName,
0, /* DesiredAccess */
&PhysicalDeviceObject);
if (!NT_SUCCESS(Status))
return Status;
-
+
/* Symbolic link name is \??\ACPI#PNP0501#1#{GUID}\ReferenceString */
/* Get GUID from SymbolicLinkName */
StartPosition = wcschr(SymbolicLinkName->Buffer, L'{');
return STATUS_INVALID_PARAMETER_1;
GuidString.Buffer = StartPosition;
GuidString.MaximumLength = GuidString.Length = (ULONG_PTR)(EndPosition + 1) - (ULONG_PTR)StartPosition;
-
+
IopNotifyPlugPlayNotification(
PhysicalDeviceObject,
EventCategoryDeviceInterfaceChange,
Enable ? (LPGUID)&GUID_DEVICE_INTERFACE_ARRIVAL : (LPGUID)&GUID_DEVICE_INTERFACE_REMOVAL,
&GuidString,
(PVOID)SymbolicLinkName);
-
+
ObDereferenceObject(FileObject);
-
+
return STATUS_SUCCESS;
}
projects / reactos.git / blobdiff