FltSupportsFileContexts function (fltkernel.h)

Article
10/21/2021

The FltSupportsFileContexts routine determines whether the file system supports file contexts for a given file. (See also FltSupportsFileContextsEx.)

Syntax

BOOLEAN FLTAPI FltSupportsFileContexts(
  [in] PFILE_OBJECT FileObject
);

Parameters

[in] FileObject

Pointer to the file object that represents the file whose file context support is being queried. This parameter is required and cannot be NULL.

Return value

FltSupportsFileContexts returns TRUE if the file system supports file contexts for the file object; FALSE otherwise.

Remarks

Minifilter drivers call FltSupportsFileContexts to determine whether the underlying file system inherently supports file contexts for the file that is represented by the specified FileObject without having to allocate a context and attempt to set it. If a context type isn't supported on a file, then the minifilter cannot attach a context to that file.

Note that a file system might support file contexts for some types of files but not for others. For example, NTFS and FAT do not support file contexts for paging files.

For more information about contexts, see About minifilter contexts.

Requirements

Requirement	Value
Minimum supported client	This routine is available on Windows Vista and later.
Target Platform	Universal
Header	fltkernel.h (include Fltkernel.h)
Library	FltMgr.lib
DLL	Fltmgr.sys
IRQL	<= APC_LEVEL