/* get current irp stack */
IoStack = IoGetCurrentIrpStackLocation(Irp);
- if (IoStack->Parameters.DeviceIoControl.IoControlCode != IOCTL_KS_PROPERTY &&
+ if (IoStack->Parameters.DeviceIoControl.IoControlCode != IOCTL_KS_PROPERTY &&
IoStack->Parameters.DeviceIoControl.IoControlCode != IOCTL_KS_METHOD &&
- IoStack->Parameters.DeviceIoControl.IoControlCode != IOCTL_KS_PROPERTY)
+ IoStack->Parameters.DeviceIoControl.IoControlCode != IOCTL_KS_ENABLE_EVENT &&
+ IoStack->Parameters.DeviceIoControl.IoControlCode != IOCTL_KS_DISABLE_EVENT)
{
if (IoStack->Parameters.DeviceIoControl.IoControlCode == IOCTL_KS_RESET_STATE)
{
NTSTATUS
FindMatchingCreateItem(
PLIST_ENTRY ListHead,
- ULONG BufferSize,
- LPWSTR Buffer,
+ PUNICODE_STRING String,
OUT PCREATE_ITEM_ENTRY *OutCreateItem)
{
PLIST_ENTRY Entry;
PCREATE_ITEM_ENTRY CreateItemEntry;
UNICODE_STRING RefString;
LPWSTR pStr;
+ ULONG Count;
- /* get terminator */
- pStr = wcschr(Buffer, L'\\');
+ /* Copy the input string */
+ RefString = *String;
- /* sanity check */
- ASSERT(pStr != NULL);
-
- if (pStr == Buffer)
+ /* Check if the string starts with a backslash */
+ if (String->Buffer[0] == L'\\')
{
- // skip slash
- RtlInitUnicodeString(&RefString, ++pStr);
+ /* Skip backslash */
+ RefString.Buffer++;
+ RefString.Length -= sizeof(WCHAR);
}
else
{
+ /* get terminator */
+ pStr = String->Buffer;
+ Count = String->Length / sizeof(WCHAR);
+ while ((Count > 0) && (*pStr != L'\\'))
+ {
+ pStr++;
+ Count--;
+ }
+
+ /* sanity check */
+ ASSERT(Count != 0);
+
// request is for pin / node / allocator
- RefString.Buffer = Buffer;
- RefString.Length = BufferSize = RefString.MaximumLength = ((ULONG_PTR)pStr - (ULONG_PTR)Buffer);
+ RefString.Length = (USHORT)((PCHAR)pStr - (PCHAR)String->Buffer);
}
/* point to first entry */
Entry = ListHead->Flink;
/* loop all device items */
- while(Entry != ListHead)
+ while (Entry != ListHead)
{
/* get create item entry */
- CreateItemEntry = (PCREATE_ITEM_ENTRY)CONTAINING_RECORD(Entry, CREATE_ITEM_ENTRY, Entry);
+ CreateItemEntry = (PCREATE_ITEM_ENTRY)CONTAINING_RECORD(Entry,
+ CREATE_ITEM_ENTRY,
+ Entry);
ASSERT(CreateItemEntry->CreateItem);
continue;
}
- DPRINT("CreateItem %S Length %u Request %wZ %u\n", CreateItemEntry->CreateItem->ObjectClass.Buffer,
- CreateItemEntry->CreateItem->ObjectClass.Length,
- &RefString,
- RefString.Length);
+ DPRINT("CreateItem %S Length %u Request %wZ %u\n",
+ CreateItemEntry->CreateItem->ObjectClass.Buffer,
+ CreateItemEntry->CreateItem->ObjectClass.Length,
+ &RefString,
+ RefString.Length);
if (CreateItemEntry->CreateItem->ObjectClass.Length > RefString.Length)
{
}
/* now check if the object class is the same */
- if (!RtlCompareUnicodeString(&CreateItemEntry->CreateItem->ObjectClass, &RefString, TRUE))
+ if (!RtlCompareUnicodeString(&CreateItemEntry->CreateItem->ObjectClass,
+ &RefString,
+ TRUE))
{
/* found matching create item */
*OutCreateItem = CreateItemEntry;
ASSERT(ObjectHeader);
/* find a matching a create item */
- Status = FindMatchingCreateItem(&ObjectHeader->ItemList, IoStack->FileObject->FileName.Length, IoStack->FileObject->FileName.Buffer, &CreateItemEntry);
+ Status = FindMatchingCreateItem(&ObjectHeader->ItemList,
+ &IoStack->FileObject->FileName,
+ &CreateItemEntry);
}
else
{
/* request to create a filter */
- Status = FindMatchingCreateItem(&DeviceHeader->ItemList, IoStack->FileObject->FileName.Length, IoStack->FileObject->FileName.Buffer, &CreateItemEntry);
+ Status = FindMatchingCreateItem(&DeviceHeader->ItemList,
+ &IoStack->FileObject->FileName,
+ &CreateItemEntry);
}
if (NT_SUCCESS(Status))