Open Radar

 
# Filed as Feedback FB7381305

IOHIDRequestAccess() not working if accessibility status was previously checked via AXIsProcessTrustedWithOptions(NULL)

IOKit > 

# Steps to reproduce:
1) Check Accessibility API trust status via 
	Boolean isTruested = AXIsProcessTrustedWithOptions(NULL);

2) At a later point (not the same runloop pass), request input monitoring permission via IOHIDRequestAccess:
	bool accessGranted = IOHIDRequestAccess(kIOHIDRequestTypeListenEvent);
	
# Expected:
- the IOHIDRequestAccess(kIOHIDRequestTypeListenEvent) brings up a prompt, asking the user for permission to monitor keyboard events.
- the app making the call is listed under System Preferences > Security > Privacy > Input-Monitoring

# Actual:
- no prompt is shown
- the app making the call is not listed under System Preferences > Security > Privacy > Input-Monitoring

# Notes:
- the prompt is only shown if AXIsProcessTrustedWithOptions(NULL) has not been called previously, making it impossible to check for accessibility permissions and request input monitoring permission in the same app
- the issue affects usage with both kIOHIDRequestTypeListenEvent and kIOHIDRequestTypePostEvent

# Sample code
The issue is reproducable with this code:

```objc
Boolean isTrusted = AXIsProcessTrustedWithOptions(NULL);

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
	bool accessGranted = IOHIDRequestAccess(kIOHIDRequestTypeListenEvent);

	NSLog(@"Access granted: %d %d", accessGranted, isTrusted);
});
```