FltDeleteVolumeContext - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// fltkernel.h
NTSTATUS FLTAPI FltDeleteVolumeContext(
[in] PFLT_FILTER Filter,
[in] PFLT_VOLUME Volume,
[out, optional] PFLT_CONTEXT *OldContext
);
View the official Windows Driver Kit DDI referenceNo description available.
FltDeleteVolumeContext removes a context that a given minifilter driver has set for a given volume and marks the context for deletion.
Filter [in]Opaque filter pointer for the caller.
Volume [in]Opaque volume pointer for the volume.
OldContext [out, optional]Pointer to a caller-allocated variable that receives the address of the deleted context. This parameter is optional and can be NULL. If OldContext is not NULL and does not point to NULL_CONTEXT, the caller is responsible for calling FltReleaseContext to release this context when it is no longer needed.
FltDeleteVolumeContext returns STATUS_SUCCESS or an appropriate NTSTATUS value such as one of the following:
| Return code | Description |
|---|---|
| STATUS_FLT_DELETING_OBJECT | The specified Volume is being torn down. This is an error code. |
| STATUS_NOT_FOUND | No matching context was found. This is an error code. |
For more information about contexts, see About minifilter contexts.
Because contexts are reference-counted, it is not usually necessary for a minifilter driver to call a routine such as FltDeleteVolumeContext to explicitly delete a context.
A minifilter driver calls FltDeleteVolumeContext to remove a context from a volume and mark the context for deletion. The context is usually freed immediately unless there is an outstanding reference on it (for example, because the context is still in use by another thread).
To allocate a new context, call FltAllocateContext.
To get a volume context, call FltGetVolumeContext.
To set a volume context, call FltSetVolumeContext.