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Questions - xnu

C function for combining an array of strings into a single string in a loop and return the string after freeing the allocated memory

I'm working on a procfs kernel extension for macOS and trying to implement a feature that emulates Linux’s /proc/cpuinfo similar to what FreeBSD does with its linprocfs. Since I'm trying to learn, and...
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Sunneva

arrays

c

bsd

kernel-extension

xnu

Votes: 0

Answers: 2

Latest Answer

Very nice that you want to learn C and even nicer that you are getting into kernel programming. Fantastic topic. Keep that work of yours going! Now to your question. I noticed the following if-stateme...
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marcluque

Prior to macOS Sierra, why didn't XNU handle THREAD_RESTART in its kqueue_scan_continue function?

I'm trying to find the cause of a nasty kernel panic triggered by Chromium Legacy, a project to backport modern versions of Chromium to old versions of macOS (10.7 – 10.10). The kernel panic occurs wh...
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Wowfunhappy

macos

xnu

kqueue

Votes: 0

Answers: 0

A third party NVMe driver won't load during macOS 11 boot

My NVMe driver works fine in macOS 10.15, but in macOS 11.0, it won't be loaded when the system boots up. I knew my driver is installed to auxiliary kext collection. when the macOS11 boot, the system ...
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Song

macos

macos-big-sur

iokit

kernel-extension

xnu

Votes: 0

Answers: 1

Latest Answer

Unfortunately, it is not possible to "win" IOKit matching against Apple's own kexts during early boot with macOS 11. The auxiliary collection is not considered for matching during that early...
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pmdj

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