DUAL_OPLOCK_KEY_ECP_CONTEXT structure (ntifs.h)
The DUAL_OPLOCK_KEY_ECP_CONTEXT structure contains the extra create parameter context for a dual oplock key. Oplocks keys for both a target and a parent file object can be set in this structure.
Syntax
typedef struct _DUAL_OPLOCK_KEY_ECP_CONTEXT {
GUID ParentOplockKey;
GUID TargetOplockKey;
BOOLEAN ParentOplockKeySet;
BOOLEAN TargetOplockKeySet;
} DUAL_OPLOCK_KEY_ECP_CONTEXT, *PDUAL_OPLOCK_KEY_ECP_CONTEXT;
Members
ParentOplockKey
A GUID representing the parent oplock key value.
TargetOplockKey
A GUID representing the target oplock key value.
ParentOplockKeySet
Set to TRUE if ParentOplockKey contains a valid GUID for the parent's oplock key.
TargetOplockKeySet
Set to TRUE if TargetOplockKey contains a valid GUID for the target's oplock key.
Remarks
The DUAL_OPLOCK_KEY_ECP_CONTEXT structure provides dual oplock keys to allow oplock requests on files and directories. Like the OPLOCK_KEY_ECP_CONTEXT structure, DUAL_OPLOCK_KEY_ECP_CONTEXT is set in an extra create parameter list (ECP_LIST) and later associated with a file object during processing of IRP_MJ_CREATE by a file system or file system filter driver.
The value GUID_ECP_DUAL_OPLOCK_KEY is used when calling support routines such as FsRtlAllocateExtraCreateParameter, FsRtlInitializeExtraCreateParameter, or FltRemoveExtraCreateParameter.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 8 |
| Header | ntifs.h |