![]() ![]() I will add though that I'm writing this by memory so if there are slight flaws in how I've remembered this feel free to correct me. The app is very expensive: 59 for a single license, but they allow me to download a trial version which I used for. I am only interested in the volume pumping functionality the app provides. It has lots of functions including capturing audio from any app and device on Mac, podcast recording, etc. That and of course the fact that kernel extensions will inherently open more attack vectors to kernel privilege levels Audio Hijack was on the market for many years. Since a kernel extension lives in the memory space of the kernel, it would change the hash value so this function needs to be turned off. ![]() If it doesn't match it's considered no longer trusted. Lanes 1 and 2 dont have any audio and all the other lanes are just mono. But youll have as many record lanes as youve selected in Audacity. In the highest security mode, the whole kernel is checked against a hash of what Apple knows at build-time. You have to select 3+ channels in Audacity to record Audio, because cannels 3-6 (6 is max. The reason you need to enter reduced security to have kernel extensions now is new hardware features with T2 and newer Macs (T1 maybe? I can't remember when it was introduced). AUDIO HIJACK M1 MAC OSIf you want system audio, youll have to use a program like Loopback (paid) or Blackhole (free) or a hardware solution like a mixer that can send system audio back into the mic input since Mac OS doesnt trust you enough to just have it built in without a system extension. ![]() The FUSE project sort of tries to do the same for file system support, though FUSE on the Mac right now is itself a kernel extension, but then it allows user-space programs to exist that act as file system extensions going through the FUSE kernel extension without each file system extension itself needing to be in the kernel. Ive been using OBS on an M1 Mac Mini for streaming my music production with some wrestling. Sort of making these extensions more like exokernel designs in a way. However there are still some things you can't do without a kernel extension so that is still supported, though Apple will likely keep expanding the DriverKit model to encompass more use-cases. Kernel extensions that have a users-ace replacement in place are considered deprecated. AUDIO HIJACK M1 DRIVERSWhich means the programs won't need full system access, and they will effectively be as harmless as any other program, while still being able to for example make drivers to interact with USB devices. That is, they have released a users-ace frameworks called DriverKit, so that a lot of things that previously required kernel extensions can now be done from Userspace. From this point on my message is just extra unnecessary background info.Īpple is sort of phasing out kernel extensions. ![]()
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