Function IOServiceAddInterestNotification 

pub unsafe extern "C-unwind" fn IOServiceAddInterestNotification(
    notify_port: IONotificationPortRef,
    service: io_service_t,
    interest_type: *mut [c_char; 128],
    callback: IOServiceInterestCallback,
    ref_con: *mut c_void,
    notification: *mut io_object_t,
) -> kern_return_t

Available on crate feature libc only.

Register for notification of state changes in an IOService.

IOService objects deliver notifications of their state changes to their clients via the IOService::messageClients API, and to other interested parties including callers of this function. Message types are defined IOKit/IOMessage.h.

Parameter notifyPort: A IONotificationPortRef object that controls how messages will be sent when the notification is fired. See IONotificationPortCreate.

Parameter interestType: A notification type from IOKitKeys.h
kIOGeneralInterest General state changes delivered via the IOService::messageClients API.
kIOBusyInterest Delivered when the IOService changes its busy state to or from zero. The message argument contains the new busy state causing the notification.

Parameter callback: A callback function called when the notification fires, with messageType and messageArgument for the state change.

Parameter refCon: A reference constant for the callbacks use.

Parameter notification: An object handle is returned on success, and should be released by the caller when the notification is to be destroyed.

Returns: A kern_return_t error code.

Safety

• notify_port must be a valid pointer.
• interest_type Array TODO.
• callback must be implemented correctly.
• ref_con must be a valid pointer.
• notification must be a valid pointer.