IOKit | IOKit for iOS | iOS library

My goal is to block keystrokes from reaching the OS using IOHID (Can't use CGEvent for other reasons). According to the docs of kIOHIDOptionsTypeSeizeDevice:

Used to open exclusive communication with the device. This will prevent the system and other clients from receiving events from the device.

How to memory-map a PCI Base Address Register (BAR) from a PCIDriverKit driver (DEXT) to a userspace application?

Memory-mapping from a driver extension to an application can be accomplished by implementing the IOUserClient::CopyClientMemoryForType in the user client subclass (on the driver side) and then calling IOConnectMapMemory64 (from the user-space application side). This has been very nicely and thoroughly explained in this related answer.

The only missing bit is getting an IOMemoryDescriptor corresponding to the desired PCI BAR in order to return it from the CopyClientMemoryForType implementation.

Asked another way, given the following simplified code, what would be the implementation of imaginaryFunctionWhichReturnsTheBARBuffer?

I am porting a MacOS PCI driver written with IOKit to the new PCIDriverKit framework.

I am able to perform DMA with a contiguous buffer allocated inside the dext (with IOBufferMemoryDescriptor::Create).

But I would also like to perform DMA to and from a buffer allocated by an application.

What I exactly want to do is:

• Allocate an aligned buffer in the app (with e.g. posix_memalign)
• Send the pointer to this buffer to the dext
• In the dext, retrieve the list of pages descriptors to be able to perform DMA without copy into (or from) this buffer.

In IOKit, we could use methods such IOMemoryDescriptor::withAddressRange and IODMACommand::gen64IOVMSegments to map and retrieve the scatter gather list but I cannot find any information on how to do this in a dext with the PCIDriverKit framework.

Can anybody help me on how to do that?

It’s quite easy to detect if Mac has an illuminated keyboard with ioreg at the command line:

I am a macOS developer, and I am trying to implement this feature:

When the iPhone or iPad is connected or disconnected to the Mac, my App needs to receive a notification, and then display or remove it on NSView .

I have made the following attempts:

1. Disk Arbitration Framework - DARegisterDiskAppearedCallback & DARegisterDiskDisappearedCallback.

2. NSWorkspaceDidMountNotification & NSWorkspaceDidUnmountNotification.

3. ExternalAccessory Framework - EAAccessoryDidConnectNotification & EAAccessoryDidDisconnectNotification

Unfortunately, all three methods have failed. Methods 1 and 2 can only know the connection event of the USB flash drive, and method 3 can only be used for MFI accessories.

Could anyone tell me how to implement this feature?

I learned from the comment section of this question that maybe I should try to use IOKit to solve this problem. But after I read Apple's documentation, I was lost.

In macOS, the IOKit HID APIs can be used for key remapping. In the example below, A key is remapped to B key, and vice versa, using Objective-C.

Is it possible to do the same remapping programmatically with the latest Swift 5.5? If it can be done, how does the example below look rewritten in Swift?

Or is there a new, more modern API that can be used with Swift to accomplish the same task?

I have installed wx-widgets on my Mac (macOS Big Sur) via Homebrew

I found this code working fine

Connect iPhone/iPad: Matched Disconnect iPhone/iPad: Terminated

This is my MacBook Pro details overview:

• Model Name: MacBook Pro
• Chip: Apple M1
• Total Number of Cores: 8 (4 performance and 4 efficiency)
• Memory: 8 GB
• System Version: macOS 11.2.2 (20D80) -- macOS Big Sur

Andriod Studio Preview for Arm64 M1 Chip details are as shown in below image:

Crash Error report page after computer restarted: