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The FltGetVolumeContext routine retrieves a context that was set for a volume by a given minifilter driver.
NTSTATUS FLTAPI FltGetVolumeContext( PFLT_FILTER Filter, PFLT_VOLUME Volume, PFLT_CONTEXT *Context );
Opaque filter pointer for the caller. This parameter is required and cannot be NULL.
Opaque pointer for the volume whose context is being retrieved. This parameter is required and cannot be NULL.
Pointer to a caller-allocated variable that receives the address of the requested context.
FltGetVolumeContext returns STATUS_SUCCESS or an appropriate NTSTATUS value, such as the following:
||No matching context was found. This is an error code.|
FltGetVolumeContext increments the reference count on the context that the Context parameter points to. When this context pointer is no longer needed, the caller must decrement its reference count by calling FltReleaseContext. Thus every successful call to FltGetVolumeContext must be matched by a subsequent call to FltReleaseContext.
To set a context for a volume, call FltSetVolumeContext.
To allocate a new context, call FltAllocateContext.
|Header||fltkernel.h (include Fltkernel.h)|