Kext to System Extension migration

Question

Created Mar ’20

Replies 3

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Participants 2

In macOS, how to prevent loading kext during macOS upgrade, like from 10.14 to 10.15. where 10.15 is still capable of loading both kext as well as system extension. Is ther any Info.plist key for kext where we can specify max os requirement? Or kext to system extension migration guide would be helpful.

Thanks.

Answered by DTS Engineer in 411717022

What sort of KEXT are you creating? The answer here is very different for different types of KEXTs:

I/O Kit KEXT have an automatic loading mechanism which complicates things.
Other types of KEXTs, like NKEs, are loading programmatically by your code, and thus you can implement whatever checking you want in that code.

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

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Answer 1

DTS Engineer OP

Apple

Mar ’20

Accepted Answer

What sort of KEXT are you creating? The answer here is very different for different types of KEXTs:

I/O Kit KEXT have an automatic loading mechanism which complicates things.
Other types of KEXTs, like NKEs, are loading programmatically by your code, and thus you can implement whatever checking you want in that code.

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

0

Answer 2

rishr OP

Mar ’20

Thanks Eskimo, As of now my kext is NKE. I think i can handle. If possible please let me know the steps for I/O Kit as well.

0

Answer 3

DTS Engineer OP

Apple

Mar ’20

If possible please let me know the steps for I/O Kit as well.

I don’t know, alas (I/O Kit is mostly about drivers, which I’m mostly not).

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

0