IoUnregisterFsRegistrationChange function (ntifs.h)

Article
02/22/2024

The IoUnregisterFsRegistrationChange routine unregisters file system filter driver's file system registration change notification routine.

Syntax

void IoUnregisterFsRegistrationChange(
  [in] PDRIVER_OBJECT          DriverObject,
  [in] PDRIVER_FS_NOTIFICATION DriverNotificationRoutine
);

Parameters

[in] DriverObject

Pointer to the driver object for the filter driver.

[in] DriverNotificationRoutine

A pointer to the PDRIVER_FS_NOTIFICATION routine, which the file system calls when it registers or unregisters itself.

Return value

None

Remarks

IoUnregisterFsRegistrationChange unregisters a file system filter driver's notification routine so that it is no longer called whenever a file system calls IoRegisterFileSystem or IoUnregisterFileSystem. IoUnregisterFsRegistrationChange also decrements the reference count on the filter driver's driver object.

Requirements

Requirement	Value
Target Platform	Universal
Header	ntifs.h (include Ntifs.h)
Library	NtosKrnl.lib
DLL	NtosKrnl.exe
IRQL	< DISPATCH_LEVEL