FltIsDirectory - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// fltkernel.h
NTSTATUS FLTAPI FltIsDirectory(
[in] PFILE_OBJECT FileObject,
[in] PFLT_INSTANCE Instance,
[out] PBOOLEAN IsDirectory
);
View the official Windows Driver Kit DDI referenceNo description available.
A minifilter driver calls the FltIsDirectory routine to determine whether a given file object represents a directory.
FileObject [in]Pointer to an already opened file object.
Instance [in]Opaque instance pointer for the instance associated with this file object.
IsDirectory [out]Pointer to a caller-supplied Boolean variable. On return, this variable receives TRUE if the file object represents a directory, FALSE otherwise.
FltIsDirectory returns STATUS_SUCCESS or an appropriate NTSTATUS value, such as the following:
| Return code | Description |
|---|---|
| STATUS_NOT_SUPPORTED | This error code is returned if the file system does not support stream contexts. Note that starting with Windows Vista, FltIsDirectory will return directory information even for file systems that do not support stream contexts. |
FltIsDirectory retrieves the desired information from the filter manager's internal stream context manager. The filter manager caches this information for future queries on this stream.
Note This routine can only be called on an opened file object.
FsRtlSupportsPerStreamContexts