次の方法で共有

Registering FsFilter Callback Routines

  • [アーティクル]

Note

For optimal reliability and performance, use file system minifilter drivers with Filter Manager support instead of legacy file system filter drivers. To port your legacy driver to a minifilter driver, see Guidelines for Porting Legacy Filter Drivers.

FsFilter notification callback routines are called before and after the underlying file system performs certain operations. For more information about FsFilter callback routines, see FsRtlRegisterFileSystemFilterCallbacks.

To register the FsFilter notification callback routines, you must allocate and initialize an FS_FILTER_CALLBACKS structure, store the entry points of the FsFilter callback routines in the structure, and pass the address of the structure in the Callbacks parameter to FsRtlRegisterFileSystemFilterCallbacks.

For example, a hypothetical "MyLegacyFilter" driver can register its FsFilter callback routines as follows:

fsFilterCallbacks.SizeOfFsFilterCallbacks = sizeof(FS_FILTER_CALLBACKS);
fsFilterCallbacks.PreAcquireForSectionSynchronization = MyLegacyFilterPreFsFilterOperation;
fsFilterCallbacks.PostAcquireForSectionSynchronization = MyLegacyFilterPostFsFilterOperation;
fsFilterCallbacks.PreReleaseForSectionSynchronization = MyLegacyFilterPreFsFilterOperation;
fsFilterCallbacks.PostReleaseForSectionSynchronization = MyLegacyFilterPostFsFilterOperation;
fsFilterCallbacks.PreAcquireForCcFlush = MyLegacyFilterPreFsFilterOperation;
fsFilterCallbacks.PostAcquireForCcFlush = MyLegacyFilterPostFsFilterOperation;
fsFilterCallbacks.PreReleaseForCcFlush = MyLegacyFilterPreFsFilterOperation;
fsFilterCallbacks.PostReleaseForCcFlush = MyLegacyFilterPostFsFilterOperation;
fsFilterCallbacks.PreAcquireForModifiedPageWriter = MyLegacyFilterPreFsFilterOperation;
fsFilterCallbacks.PostAcquireForModifiedPageWriter = MyLegacyFilterPostFsFilterOperation;
fsFilterCallbacks.PreReleaseForModifiedPageWriter = MyLegacyFilterPreFsFilterOperation;
fsFilterCallbacks.PostReleaseForModifiedPageWriter = MyLegacyFilterPostFsFilterOperation;

status = FsRtlRegisterFileSystemFilterCallbacks(DriverObject, &fsFilterCallbacks);