CODEWITHSUNDEEP
macosmacos-catalinadiskiokitdriverkit
Dirk
Dirk

Reputation: 21

How to develop driver to read disk by System Extension and DriverKit for macOS10.15+

I had developed a kernel extension(kext) by IOKit, but it will be deprecated in the future. So I want develope another driver use dext to replace kext using the DriverKit. But I don't find the executable solutions, like that I cannot find the some class to repalce IOMedia. When I intend to include IOKit in my code,I found the TARGET_OS_DRIVERKIT is 1. Can someone help me? Thanks a lot!

Upvotes: 1

Views: 358

Answers (1)

pmdj
pmdj

Reputation: 23428

IOMedia is a subclass of IOStorage and part of the IOStorageFamily. As of the macOS 11.2 SDK (Xcode 12.4) this has not yet been ported to DriverKit.

The SCSIControllerDriverKit API has been in beta since WWDC 2020. It didn't ship with the release versions of macOS 11.0.x-11.2. It's included in the (as of this writing) current betas of 11.3. Perhaps it will see general release with macOS 11.3. This is not a direct port of the storage stack; instead, it's essentially a port of the IOParallelSCSIController KPI. This lets you implement a driver for, well, a SCSI controller. Such a driver can tell the OS about one or more SCSI devices, including block devices, and will start receiving SCSI commands from the system, which it is expected to forward to the underlying controller device. It does not allow you to implement "filter" storage drivers, or to issue SCSI commands to other devices in the system.

Upvotes: 1

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